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 Forum index » House Training » Users ( For the regulars )
Problems with ffmpeg..FFConvert in Xenialpup64
Moderators: Flash, Ian, JohnMurga
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Sat 21 Apr 2018, 18:11    Post subject:  Problems with ffmpeg..FFConvert in Xenialpup64  

I have never been able to get this to record sound on my desktop machine.

The sound seems to be there and I hear it while watching live but trying to record it along with the video does not happen with any combination of presets and formats I choose and i have tried many.

Is anybody experienced in this and can you give me a setting that should work please?

Here is the last try output which just didn't record anything.

Code:
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Guessed Channel Layout for  Input Stream #0.0 : stereo
Input #0, alsa, from 'hw:0,0':
  Duration: N/A, start: 1524347871.934124, bitrate: 1536 kb/s
    Stream #0:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Input #1, x11grab, from ':0+46,30':
  Duration: N/A, start: 1524347871.968332, bitrate: N/A
    Stream #1:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1228x964, 29.97 fps, 29.97 tbr, 1000k tbn, 29.97 tbc
Unknown encoder 'libfaac'
#!/bin/sh
ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -s 1228x964  -i :0+46,30 -t 60 -y -f mp4  -vcodec libx264   -threads 0  -b:v 1250k  -aspect 4:3 -r 29.97 -flags +loop -cmp chroma -maxrate 1500k -bufsize 4M -bt 256k -refs 1 -bf 3 -coder 1 -me_method umh -me_range 16 -subq 7 -partitions +parti4x4+parti8x8+partp8x8+partb8x8 -g 250 -keyint_min 25 -level 30 -qmin 10 -qmax 51 -qcomp 0.6 -trellis 2 -sc_threshold 40 -i_qfactor 0.71 -acodec libfaac -ab 112k -ar 48000 -ac 2  "/mnt/home/TempSave/Movie/testtwo/x11grab.mp4"
STATUS=$?
echo -n $STATUS > "/tmp/ffconvert/x11grab.tmp"



I get the "Unknown encoder 'libfaac' " message it seems no matter what encoder I choose lately.
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mikeslr


Joined: 16 Jun 2008
Posts: 2700
Location: 500 seconds from Sol

PostPosted: Sat 21 Apr 2018, 20:08    Post subject: Should your libaac be 64-bit?  

Hi April,

I previously hadn't tried to record any sound under Xenialpup64. So wasn't aware of a problem. But just did a pfind for libfaac. The only libfaac libraries found were those in /usr/lib/i386-linux-gnu. There is a separate 64-bit package, see link from here: https://packages.ubuntu.com/xenial/libfaac0. I downloaded and unpacked it. Under Ubuntu, they would be installed to /usr/lib/x86_64-linux-gnu. For whatever reason, 'Ubuntu-based' Puppies can't find the /x86_64-linux-gnu folder. So to use those libraries, it would have been necessary to move them. But I think they would have been moved to /usr/lib rather than /usr/lib/i386-linux-gnu.

In short, you (we) may not have the required 64-bit libfaac libraries. See if installing them to /usr/lib solves the problem. And please let us know. Your post tells me you know a hell of a lot more about ffmpeg than I do. Smile

mikesLr
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wiak

Joined: 11 Dec 2007
Posts: 957
Location: not Bulgaria

PostPosted: Sat 21 Apr 2018, 20:47    Post subject: Re: Problems with ffmpeg..FFConvert in Xenialpup64  

april wrote:
I have never been able to get this to record sound on my desktop machine.
...
Is anybody experienced in this and can you give me a setting that should work please?
...
I get the "Unknown encoder 'libfaac' " message it seems no matter what encoder I choose lately.


It looks to me from the ffmpeg version info you post that the ffmpeg you are using does not include libfaac support.

Have you tried the AV recording program "wex", which is a bash/gtkdialog frontend to ffmpeg? wex includes the following code to automatically change the AAC codec depending on what is found compiled into the ffmpeg version on the system:

Code:
AVCODECS="$($AVCONV -codecs 2>/dev/null)"
if [ "$(printf '%s' $AVCODECS | grep 'libfaac')" ];then
 export AACENC="libfaac"
elif [ "$(printf '%s' $AVCODECS | grep 'libvo_aacenc')" ];then
 export AACENC="libvo_aacenc"
else
 export AACENC="aac -strict experimental"
fi


wex can be installed from info/downloads at:

http://www.murga-linux.com/puppy/viewtopic.php?p=918785&search_id=616042870#918785

You only need to install the wex dotpet and the scrox dotpet (64bit versions or 32 bit versions appropriate to your system). weav isn't required at all - it is a separate program. A particularly useful undocumented feature of wex is that it automatically creates a temporary logfile of the exact ffmpeg commandline it used. You find that in /tmp/wex/ffmpeg.log whilst a recording is being made or before wex screen closed. Another pretty much undocumented feature of wex is that it has a plug-in facility that lets you can run any ffmpeg command you like from it (in fact any command...!) (not just the pre-loaded default commands) - I'll maybe write a howto on that later.

Note that wex is an audio recorder, or a video+audio recorder or a screencast+audio recorder: you just need to click the appropriate check boxes for what you want - there are three checkboxes: one for audio, one for X11video (screencast) and one for webcam (if you have one - definitely needs unchecked if no webcam on system).

So I suggest first installing wex to see if sound recording works, or if there is some reason you can't do that try libvo_aacenc instead of libfaac on your commandline, or failing that (since I can't see it in your ffmpeg version info either - though I may be a bit blind), try "aac -strict experimental". Wex has been tested as working in Xenialpup earlier.

wiak

Last edited by wiak on Sat 21 Apr 2018, 21:45; edited 1 time in total
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norgo


Joined: 13 Nov 2015
Posts: 278
Location: Germany

PostPosted: Sat 21 Apr 2018, 21:03    Post subject:  

FFmpeg / AAC Encoder

please check your ffmpeg installation for aac encoder.

Code:
# ffmpeg -codecs | grep aac
ffmpeg version 2.8.11 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.3.0 (GCC)
  configuration: --prefix=/usr --libdir=/usr/lib64 --enable-libmp3lame --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-pthreads --enable-small --enable-postproc --enable-libvorbis --enable-gpl --enable-shared --enable-nonfree --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-debug --enable-bzlib --enable-zlib --enable-libspeex --enable-version3 --enable-runtime-cpudetect --enable-x11grab --enable-libschroedinger --enable-libtheora --enable-libxvid --enable-swscale --enable-libvpx
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
 DEA.L. aac                   (decoders: aac aac_fixed libfdk_aac ) (encoders: aac libfdk_aac )
 D.A.L. aac_latm


this is the output of ffmpeg 2.8.11 in slacko64 700RC3
can't detect an aac encoder in your posted ffmpeg output

Last edited by norgo on Sun 22 Apr 2018, 05:05; edited 1 time in total
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ozsouth

Joined: 01 Jan 2010
Posts: 363
Location: S.E Australia

PostPosted: Sun 22 Apr 2018, 01:24    Post subject: Workaround  

Although I'm using Lxpupsc64 on a laptop, I found that FFConvert uses the internal mic to record, hence I have to raise internal mic volume.
With a pc lacking internal mic, I used a cable from headphone jack to mic jack. Crude, but it works.
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Sun 22 Apr 2018, 18:08    Post subject:  

Working through answers thanks .

Mikesir "Puppies can't find the /x86_64-linux-gnu folder." Xenialpup64 does not seem to have the folder at all and the "i386-linux-gnu. " folder is empty

The x86_64-linux-gnu references just seem to be links back to the root directory , not any directory of executeables? Its an empty link

Clearly no library to encode/decode exists so i got it from Github
https://github.com/mstorsjo/fdk-aac
Make sure you have the devx package installed
In the directory run "autogen.sh" ..right click choose run in terminal
Then run the normal
./configure make makeinstall
Message received ..Libraries have been installed in:
/usr/local/lib
I'll update when I check it out . Its an android library so I might have to find a linux source or executeable.
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Sun 22 Apr 2018, 19:09    Post subject:  

norgo ...

Code:
root#  ffmpeg -codecs | grep aac
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
 DEA.L. aac                  AAC (Advanced Audio Coding) (decoders: aac aac_fixed )
 D.A.L. aac_latm             AAC LATM (Advanced Audio Coding LATM syntax)
root#

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mikeslr


Joined: 16 Jun 2008
Posts: 2700
Location: 500 seconds from Sol

PostPosted: Sun 22 Apr 2018, 20:28    Post subject: The Mysterious x86_64-linux-gnu folders  

Hi April,

FYI, I've attached a screenshot of the contents of the extracted Ubuntu Xenial Xerus 64-bit libfaac deb. It was extracted merely using UExtract on the deb then a couple layers deep within /mnt/home. Ignoring the left part of the window title within the screenshot [which shows the folder into which it was extracted], that right part of title reveals the folder into which two libraries and two symbolic links would have been written to be /usr/lib/x86_64-linux-gnu --together with a x86_64-linux-gnu folder, itself, if one did not already exist-- had the deb merely been installed.

I've discussed the problem with such folder before: http://murga-linux.com/puppy/viewtopic.php?p=960945#960945.

Frankly, anything I write about it, beyond that the problem exists and how I worked-around it, would just be guessing* on my part.

mikesLr

* As April noted, /lib/x86_64-linux-gnu in Xenialpup64 [and Tahrpup64] is a symbolic link to /lib. I'm guessing that installation of a deb which was written to use an actual /lib/x86_64-linux-gnu folder either does not follow the link [writing nothing to the system] or overwrites the link creating an actual folder which Puppy can't find. I don't know why it can't find such folder. Puppies can find /lib64 folders and should be able to find any folder however named.
libfaac_in_x86_64_folder.png
 Description   Screenshot of UExtracted 64-bit libfaac deb
 Filesize   18 KB
 Viewed   187 Time(s)

libfaac_in_x86_64_folder.png

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OscarTalks


Joined: 05 Feb 2012
Posts: 1815
Location: London, England

PostPosted: Sun 22 Apr 2018, 20:53    Post subject:  

You need to add the library for the required function that is missing, in this case aac encoding. Can be from packages or source. Best to use --prefix=/usr if built from source.
Make sure the headers and other dev components have been installed as well.

Then you need to recompile ffmpeg. Make sure to add the configuration option to enable the library you have just installed. Look through your system and all other available options in order to build exactly the list of supported functions that you want. Use a similar branch version of the ffmpeg source so you don't introduce incompatibilities with other packages (2.8.x).

_________________
Oscar in England

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wiak

Joined: 11 Dec 2007
Posts: 957
Location: not Bulgaria

PostPosted: Sun 22 Apr 2018, 21:47    Post subject:  

As I already said, and being repeated by others now

http://www.murga-linux.com/puppy/viewtopic.php?p=989377#989377

your ffmpeg version list does not list libfaac as compiled in to your current ffmpeg version - putting a libfaac library on your system will in itself make no difference because, yes, you would need to recompile your version of ffmpeg with dev versions of required libraries.

What I suggested is that you try a program that should work or at least identify the issue - I suggested wex is good for that at least.

Like I said (see my previous post), an alternative (without needing to recompile ffmeg) would be to try, instead of libfaac on your commandline, audio library codec":

Code:
aac -strict experimental

or you can use

aac -strict -2

which is just a numeric way of selecting the same ffmpeg-inbuilt experimental aac codec


of perhaps, audio codec:

Code:
libvo_aacenc


I also gave you the command to check which codecs are available to your ffmpeg (without needing to scan ffmpeg version info). I will repeat that since it probably wasn't clear on my previous post:

Code:
ffmpeg -codecs


For example, to see if libvo_aacenc is available you could enter:

EDIT: You need the 2>/dev/null below to get rid of the other stuff that is being output by stderr stream:
Code:
ffmpeg -codecs 2>/dev/null | grep 'libvo_aacenc'


If not, I suggest the usually ffmpeg built-in "aac -strict experimental" will work for your ffmpeg, but unless you try it, I have no idea if what I write is of any use to you.

i.e. In your program use:

Code:
ffmpeg -f alsa -ac 2 -i hw:0,0 -f x11grab -s 1228x964  -i :0+46,30 -t 60 -y -f mp4  -vcodec libx264   -threads 0  -b:v 1250k  -aspect 4:3 -r 29.97 -flags +loop -cmp chroma -maxrate 1500k -bufsize 4M -bt 256k -refs 1 -bf 3 -coder 1 -me_method umh -me_range 16 -subq 7 -partitions +parti4x4+parti8x8+partp8x8+partb8x8 -g 250 -keyint_min 25 -level 30 -qmin 10 -qmax 51 -qcomp 0.6 -trellis 2 -sc_threshold 40 -i_qfactor 0.71 -acodec aac -strict experimental -ab 112k -ar 48000 -ac 2  "/mnt/home/TempSave/Movie/testtwo/x11grab.mp4"


EDIT2: By the way, XenialDog64 (which is the system I mainly use) also uses that ffmpeg from ubuntu. I use wex on that. I've just checked with above ffmpeg -codecs grep and I also do not have libfaac or libvo_aacenc on my system. wex however works fine recording audio (and video) - it is using aac -strict experimental as suggested in my earlier post to you. Note that the reason aac couldn't be seen as an encoder in your first post is that it is internal to ffmpeg and not one of the external libs.

From its /tmp/wex/ffmpeg.log, wex uses, for example, an alternative command like this (using 'presets, which themselves control quality, trellis etc' such as 'superfast' and so on):

Code:
ffmpeg -y -thread_queue_size 512 -f alsa -ac 2 -ar 44100 -i plughw:0,0 -thread_queue_size 64 -f x11grab -show_region 1 -draw_mouse 1 -r 30 -s 1024x768 -i :0.0+0,0 -filter_complex asyncts -c:v libx264 -preset superfast -crf 23 -pix_fmt yuv420p -c:a aac -strict experimental -ac 2 -ar 44100 -b:a 192k -threads 0 /root/try.mp4


As I said, it is also possible to use your command from inside wex (and hence have the GUI play, stop, file load/save dialogs etc if you wish). That is without modifying wex code itself (it has a plug-in system for exactly that user commandline purpose). I'll explain that in a simple howto sometime, if you are interested. But the commandline works fine by itself.

wiak
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Mon 23 Apr 2018, 04:17    Post subject:  

OK wiac . As I said I'm working through it . I have not gotten to your suggestion yet as installing extra stuff that may or may not work is a last resort.

I'm looking at putting in libfdk-aac-dev and libmp3lame-dev which are available on the PPM.

I take oscars point that a recompiling of ffmpeg will be necessary to use libfdk-aac.

Installed both dev files above and aac still no go but I am getting a response from lame.

Looks like the old problems resurfacing with some codecs just not able to be put out in the latest compilations of ffmpeg due to licence and copyright bullshit.
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Mon 23 Apr 2018, 04:24    Post subject:  

wiak.. I put the corrected code =nothing so here is what I get
Code:
root# ffmpeg -codecs 2>/dev/null | grep 'libvo_aacenc'
root# ffmpeg -codecs
ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enable-libdc1394 --enable-libiec61883 --enable-libzmq --enable-frei0r --enable-libx264 --enable-libopencv
  libavutil      54. 31.100 / 54. 31.100
  libavcodec     56. 60.100 / 56. 60.100
  libavformat    56. 40.101 / 56. 40.101
  libavdevice    56.  4.100 / 56.  4.100
  libavfilter     5. 40.101 /  5. 40.101
  libavresample   2.  1.  0 /  2.  1.  0
  libswscale      3.  1.101 /  3.  1.101
  libswresample   1.  2.101 /  1.  2.101
  libpostproc    53.  3.100 / 53.  3.100
Codecs:
 D..... = Decoding supported
 .E.... = Encoding supported
 ..V... = Video codec
 ..A... = Audio codec
 ..S... = Subtitle codec
 ...I.. = Intra frame-only codec
 ....L. = Lossy compression
 .....S = Lossless compression
 -------
 D.VI.. 012v                 Uncompressed 4:2:2 10-bit
 D.V.L. 4xm                  4X Movie
 D.VI.S 8bps                 QuickTime 8BPS video
 .EVIL. a64_multi            Multicolor charset for Commodore 64 (encoders: a64multi )
 .EVIL. a64_multi5           Multicolor charset for Commodore 64, extended with 5th color (colram) (encoders: a64multi5 )
 D.V..S aasc                 Autodesk RLE
 D.VIL. aic                  Apple Intermediate Codec
 DEVI.S alias_pix            Alias/Wavefront PIX image
 DEVIL. amv                  AMV Video
 D.V.L. anm                  Deluxe Paint Animation
 D.V.L. ansi                 ASCII/ANSI art
 DEV..S apng                 APNG (Animated Portable Network Graphics) image
 DEVIL. asv1                 ASUS V1
 DEVIL. asv2                 ASUS V2
 D.VIL. aura                 Auravision AURA
 D.VIL. aura2                Auravision Aura 2
 D.V... avrn                 Avid AVI Codec
 DEVI.. avrp                 Avid 1:1 10-bit RGB Packer
 D.V.L. avs                  AVS (Audio Video Standard) video
 DEVI.. avui                 Avid Meridien Uncompressed
 DEVI.. ayuv                 Uncompressed packed MS 4:4:4:4
 D.V.L. bethsoftvid          Bethesda VID video
 D.V.L. bfi                  Brute Force & Ignorance
 D.V.L. binkvideo            Bink video
 D.VI.. bintext              Binary text
 DEVI.S bmp                  BMP (Windows and OS/2 bitmap)
 D.V..S bmv_video            Discworld II BMV video
 D.VI.S brender_pix          BRender PIX image
 D.V.L. c93                  Interplay C93
 D.V.L. cavs                 Chinese AVS (Audio Video Standard) (AVS1-P2, JiZhun profile)
 D.V.L. cdgraphics           CD Graphics video
 D.VIL. cdxl                 Commodore CDXL video
 DEV.L. cinepak              Cinepak
 DEVIL. cljr                 Cirrus Logic AccuPak
 D.VI.S cllc                 Canopus Lossless Codec
 D.V.L. cmv                  Electronic Arts CMV video (decoders: eacmv )
 D.V... cpia                 CPiA video format
 D.V..S cscd                 CamStudio (decoders: camstudio )
 D.VIL. cyuv                 Creative YUV (CYUV)
 D.VILS dds                  DirectDraw Surface image decoder
 D.V.L. dfa                  Chronomaster DFA
 DEV.LS dirac                Dirac (encoders: libschroedinger )
 DEVIL. dnxhd                VC3/DNxHD
 DEVI.S dpx                  DPX (Digital Picture Exchange) image
 D.V.L. dsicinvideo          Delphine Software International CIN video
 DEVIL. dvvideo              DV (Digital Video)
 D.V..S dxa                  Feeble Files/ScummVM DXA
 D.VI.S dxtory               Dxtory
 D.V.L. escape124            Escape 124
 D.V.L. escape130            Escape 130
 D.VILS exr                  OpenEXR image
 DEV..S ffv1                 FFmpeg video codec #1
 DEVI.S ffvhuff              Huffyuv FFmpeg variant
 D.V.L. fic                  Mirillis FIC
 DEV..S flashsv              Flash Screen Video v1
 DEV.L. flashsv2             Flash Screen Video v2
 D.V..S flic                 Autodesk Animator Flic video
 DEV.L. flv1                 FLV / Sorenson Spark / Sorenson H.263 (Flash Video) (decoders: flv ) (encoders: flv )
 D.V..S fraps                Fraps
 D.VI.S frwu                 Forward Uncompressed
 D.V.L. g2m                  Go2Meeting
 DEV..S gif                  GIF (Graphics Interchange Format)
 DEV.L. h261                 H.261
 DEV.L. h263                 H.263 / H.263-1996, H.263+ / H.263-1998 / H.263 version 2
 D.V.L. h263i                Intel H.263
 DEV.L. h263p                H.263+ / H.263-1998 / H.263 version 2
 DEV.LS h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (decoders: h264 h264_crystalhd h264_vdpau ) (encoders: libx264 libx264rgb )
 DEVIL. hap                  Vidvox Hap decoder
 DEV.L. hevc                 H.265 / HEVC (High Efficiency Video Coding) (encoders: libx265 )
 D.V.L. hnm4video            HNM 4 video
 D.VIL. hq_hqa               Canopus HQ/HQA
 D.VIL. hqx                  Canopus HQX
 DEVI.S huffyuv              HuffYUV
 D.V.L. idcin                id Quake II CIN video (decoders: idcinvideo )
 D.VI.. idf                  iCEDraw text
 D.V.L. iff_byterun1         IFF ByteRun1 (decoders: iff )
 D.V.L. iff_ilbm             IFF ILBM (decoders: iff )
 D.V.L. indeo2               Intel Indeo 2
 D.V.L. indeo3               Intel Indeo 3
 D.V.L. indeo4               Intel Indeo Video Interactive 4
 D.V.L. indeo5               Intel Indeo Video Interactive 5
 D.V.L. interplayvideo       Interplay MVE video
 DEVILS jpeg2000             JPEG 2000 (encoders: jpeg2000 libopenjpeg )
 DEVILS jpegls               JPEG-LS
 D.VIL. jv                   Bitmap Brothers JV video
 D.V.L. kgv1                 Kega Game Video
 D.V.L. kmvc                 Karl Morton's video codec
 D.VI.S lagarith             Lagarith lossless
 .EVI.S ljpeg                Lossless JPEG
 D.VI.S loco                 LOCO
 D.V.L. mad                  Electronic Arts Madcow Video (decoders: eamad )
 D.VIL. mdec                 Sony PlayStation MDEC (Motion DECoder)
 D.V.L. mimic                Mimic
 DEVIL. mjpeg                Motion JPEG
 D.VIL. mjpegb               Apple MJPEG-B
 D.V.L. mmvideo              American Laser Games MM Video
 D.V.L. motionpixels         Motion Pixels video
 DEV.L. mpeg1video           MPEG-1 video (decoders: mpeg1video mpeg1video_vdpau )
 DEV.L. mpeg2video           MPEG-2 video (decoders: mpeg2video mpegvideo mpegvideo_vdpau mpeg2_crystalhd )
 DEV.L. mpeg4                MPEG-4 part 2 (decoders: mpeg4 mpeg4_crystalhd mpeg4_vdpau ) (encoders: mpeg4 libxvid )
 D.V.L. mpegvideo_xvmc       MPEG-1/2 video XvMC (X-Video Motion Compensation)
 D.V.L. msa1                 MS ATC Screen
 D.V.L. msmpeg4v1            MPEG-4 part 2 Microsoft variant version 1
 DEV.L. msmpeg4v2            MPEG-4 part 2 Microsoft variant version 2
 DEV.L. msmpeg4v3            MPEG-4 part 2 Microsoft variant version 3 (decoders: msmpeg4_crystalhd msmpeg4 ) (encoders: msmpeg4 )
 D.V..S msrle                Microsoft RLE
 D.V.L. mss1                 MS Screen 1
 D.VIL. mss2                 MS Windows Media Video V9 Screen
 DEV.L. msvideo1             Microsoft Video 1
 D.VI.S mszh                 LCL (LossLess Codec Library) MSZH
 D.V.L. mts2                 MS Expression Encoder Screen
 D.VIL. mvc1                 Silicon Graphics Motion Video Compressor 1
 D.VIL. mvc2                 Silicon Graphics Motion Video Compressor 2
 D.V.L. mxpeg                Mobotix MxPEG video
 D.V.L. nuv                  NuppelVideo/RTJPEG
 D.V.L. paf_video            Amazing Studio Packed Animation File Video
 DEVI.S pam                  PAM (Portable AnyMap) image
 DEVI.S pbm                  PBM (Portable BitMap) image
 DEVI.S pcx                  PC Paintbrush PCX image
 DEVI.S pgm                  PGM (Portable GrayMap) image
 DEVI.S pgmyuv               PGMYUV (Portable GrayMap YUV) image
 D.VIL. pictor               Pictor/PC Paint
 DEV..S png                  PNG (Portable Network Graphics) image
 DEVI.S ppm                  PPM (Portable PixelMap) image
 DEVIL. prores               Apple ProRes (iCodec Pro) (decoders: prores prores_lgpl ) (encoders: prores prores_aw prores_ks )
 D.VIL. ptx                  V.Flash PTX image
 D.VI.S qdraw                Apple QuickDraw
 D.V.L. qpeg                 Q-team QPEG
 DEV..S qtrle                QuickTime Animation (RLE) video
 DEVI.S r10k                 AJA Kona 10-bit RGB Codec
 DEVI.S r210                 Uncompressed RGB 10-bit
 DEVI.S rawvideo             raw video
 D.VIL. rl2                  RL2 video
 DEV.L. roq                  id RoQ video (decoders: roqvideo ) (encoders: roqvideo )
 D.V.L. rpza                 QuickTime video (RPZA)
 DEV.L. rv10                 RealVideo 1.0
 DEV.L. rv20                 RealVideo 2.0
 D.V.L. rv30                 RealVideo 3.0
 D.V.L. rv40                 RealVideo 4.0
 D.V.L. sanm                 LucasArts SANM/SMUSH video
 DEVI.S sgi                  SGI image
 D.VI.S sgirle               SGI RLE 8-bit
 D.V.L. smackvideo           Smacker video (decoders: smackvid )
 D.V.L. smc                  QuickTime Graphics (SMC)
 D.V... smvjpeg              Sigmatel Motion Video
 DEV.LS snow                 Snow
 D.VIL. sp5x                 Sunplus JPEG (SP5X)
 DEVI.S sunrast              Sun Rasterfile image
 DEV.L. svq1                 Sorenson Vector Quantizer 1 / Sorenson Video 1 / SVQ1
 D.V.L. svq3                 Sorenson Vector Quantizer 3 / Sorenson Video 3 / SVQ3
 DEVI.S targa                Truevision Targa image
 D.VI.. targa_y216           Pinnacle TARGA CineWave YUV16
 D.V.L. tdsc                 TDSC
 D.V.L. tgq                  Electronic Arts TGQ video (decoders: eatgq )
 D.V.L. tgv                  Electronic Arts TGV video (decoders: eatgv )
 DEV.L. theora               Theora (encoders: libtheora )
 D.VIL. thp                  Nintendo Gamecube THP video
 D.V.L. tiertexseqvideo      Tiertex Limited SEQ video
 DEVI.S tiff                 TIFF image
 D.VIL. tmv                  8088flex TMV
 D.V.L. tqi                  Electronic Arts TQI video (decoders: eatqi )
 D.V.L. truemotion1          Duck TrueMotion 1.0
 D.V.L. truemotion2          Duck TrueMotion 2.0
 D.V..S tscc                 TechSmith Screen Capture Codec (decoders: camtasia )
 D.V.L. tscc2                TechSmith Screen Codec 2
 D.VIL. txd                  Renderware TXD (TeXture Dictionary) image
 D.V.L. ulti                 IBM UltiMotion (decoders: ultimotion )
 DEVI.S utvideo              Ut Video
 DEVI.S v210                 Uncompressed 4:2:2 10-bit
 D.VI.S v210x                Uncompressed 4:2:2 10-bit
 DEVI.. v308                 Uncompressed packed 4:4:4
 DEVI.. v408                 Uncompressed packed QT 4:4:4:4
 DEVI.S v410                 Uncompressed 4:4:4 10-bit
 D.V.L. vb                   Beam Software VB
 D.VI.S vble                 VBLE Lossless Codec
 D.V.L. vc1                  SMPTE VC-1 (decoders: vc1 vc1_crystalhd vc1_vdpau )
 D.V.L. vc1image             Windows Media Video 9 Image v2
 D.VIL. vcr1                 ATI VCR1
 D.VIL. vixl                 Miro VideoXL (decoders: xl )
 D.V.L. vmdvideo             Sierra VMD video
 D.V..S vmnc                 VMware Screen Codec / VMware Video
 D.V.L. vp3                  On2 VP3
 D.V.L. vp5                  On2 VP5
 D.V.L. vp6                  On2 VP6
 D.V.L. vp6a                 On2 VP6 (Flash version, with alpha channel)
 D.V.L. vp6f                 On2 VP6 (Flash version)
 D.V.L. vp7                  On2 VP7
 DEV.L. vp8                  On2 VP8 (decoders: vp8 libvpx ) (encoders: libvpx )
 DEV.L. vp9                  Google VP9 (decoders: vp9 libvpx-vp9 ) (encoders: libvpx-vp9 )
 DEVILS webp                 WebP (encoders: libwebp )
 DEV.L. wmv1                 Windows Media Video 7
 DEV.L. wmv2                 Windows Media Video 8
 D.V.L. wmv3                 Windows Media Video 9 (decoders: wmv3 wmv3_crystalhd wmv3_vdpau )
 D.V.L. wmv3image            Windows Media Video 9 Image
 D.VIL. wnv1                 Winnov WNV1
 D.V.L. ws_vqa               Westwood Studios VQA (Vector Quantized Animation) video (decoders: vqavideo )
 D.V.L. xan_wc3              Wing Commander III / Xan
 D.V.L. xan_wc4              Wing Commander IV / Xxan
 D.VI.. xbin                 eXtended BINary text
 DEVI.S xbm                  XBM (X BitMap) image
 DEVIL. xface                X-face image
 DEVI.S xwd                  XWD (X Window Dump) image
 DEVI.. y41p                 Uncompressed YUV 4:1:1 12-bit
 D.V.L. yop                  Psygnosis YOP Video
 DEVI.. yuv4                 Uncompressed packed 4:2:0
 D.V..S zerocodec            ZeroCodec Lossless Video
 DEVI.S zlib                 LCL (LossLess Codec Library) ZLIB
 DEV..S zmbv                 Zip Motion Blocks Video
 ..A.L. 4gv                  4GV (Fourth Generation Vocoder)
 D.A.L. 8svx_exp             8SVX exponential
 D.A.L. 8svx_fib             8SVX fibonacci
 DEA.L. aac                  AAC (Advanced Audio Coding) (decoders: aac aac_fixed )
 D.A.L. aac_latm             AAC LATM (Advanced Audio Coding LATM syntax)
 DEA.L. ac3                  ATSC A/52A (AC-3) (decoders: ac3 ac3_fixed ) (encoders: ac3 ac3_fixed )
 D.A.L. adpcm_4xm            ADPCM 4X Movie
 DEA.L. adpcm_adx            SEGA CRI ADX ADPCM
 D.A.L. adpcm_afc            ADPCM Nintendo Gamecube AFC
 D.A.L. adpcm_ct             ADPCM Creative Technology
 D.A.L. adpcm_dtk            ADPCM Nintendo Gamecube DTK
 D.A.L. adpcm_ea             ADPCM Electronic Arts
 D.A.L. adpcm_ea_maxis_xa    ADPCM Electronic Arts Maxis CDROM XA
 D.A.L. adpcm_ea_r1          ADPCM Electronic Arts R1
 D.A.L. adpcm_ea_r2          ADPCM Electronic Arts R2
 D.A.L. adpcm_ea_r3          ADPCM Electronic Arts R3
 D.A.L. adpcm_ea_xas         ADPCM Electronic Arts XAS
 DEA.L. adpcm_g722           G.722 ADPCM (decoders: g722 ) (encoders: g722 )
 DEA.L. adpcm_g726           G.726 ADPCM (decoders: g726 ) (encoders: g726 )
 D.A.L. adpcm_g726le         G.726 ADPCM little-endian (decoders: g726le )
 D.A.L. adpcm_ima_amv        ADPCM IMA AMV
 D.A.L. adpcm_ima_apc        ADPCM IMA CRYO APC
 D.A.L. adpcm_ima_dk3        ADPCM IMA Duck DK3
 D.A.L. adpcm_ima_dk4        ADPCM IMA Duck DK4
 D.A.L. adpcm_ima_ea_eacs    ADPCM IMA Electronic Arts EACS
 D.A.L. adpcm_ima_ea_sead    ADPCM IMA Electronic Arts SEAD
 D.A.L. adpcm_ima_iss        ADPCM IMA Funcom ISS
 D.A.L. adpcm_ima_oki        ADPCM IMA Dialogic OKI
 DEA.L. adpcm_ima_qt         ADPCM IMA QuickTime
 D.A.L. adpcm_ima_rad        ADPCM IMA Radical
 D.A.L. adpcm_ima_smjpeg     ADPCM IMA Loki SDL MJPEG
 DEA.L. adpcm_ima_wav        ADPCM IMA WAV
 D.A.L. adpcm_ima_ws         ADPCM IMA Westwood
 DEA.L. adpcm_ms             ADPCM Microsoft
 D.A.L. adpcm_sbpro_2        ADPCM Sound Blaster Pro 2-bit
 D.A.L. adpcm_sbpro_3        ADPCM Sound Blaster Pro 2.6-bit
 D.A.L. adpcm_sbpro_4        ADPCM Sound Blaster Pro 4-bit
 DEA.L. adpcm_swf            ADPCM Shockwave Flash
 D.A.L. adpcm_thp            ADPCM Nintendo THP
 D.A.L. adpcm_thp_le         ADPCM Nintendo THP (Little-Endian)
 D.A.L. adpcm_vima           LucasArts VIMA audio (decoders: adpcm_vima vima )
 D.A.L. adpcm_xa             ADPCM CDROM XA
 DEA.L. adpcm_yamaha         ADPCM Yamaha
 DEA..S alac                 ALAC (Apple Lossless Audio Codec)
 D.A.L. amr_nb               AMR-NB (Adaptive Multi-Rate NarrowBand) (decoders: amrnb )
 D.A.L. amr_wb               AMR-WB (Adaptive Multi-Rate WideBand) (decoders: amrwb )
 D.A..S ape                  Monkey's Audio
 D.A.L. atrac1               ATRAC1 (Adaptive TRansform Acoustic Coding)
 D.A.L. atrac3               ATRAC3 (Adaptive TRansform Acoustic Coding 3)
 D.A.L. atrac3p              ATRAC3+ (Adaptive TRansform Acoustic Coding 3+) (decoders: atrac3plus )
 D.A.L. avc                  On2 Audio for Video Codec (decoders: on2avc )
 D.A.L. binkaudio_dct        Bink Audio (DCT)
 D.A.L. binkaudio_rdft       Bink Audio (RDFT)
 D.A.L. bmv_audio            Discworld II BMV audio
 ..A.L. celt                 Constrained Energy Lapped Transform (CELT)
 DEA.L. comfortnoise         RFC 3389 Comfort Noise
 D.A.L. cook                 Cook / Cooker / Gecko (RealAudio G2)
 D.A.L. dsd_lsbf             DSD (Direct Stream Digital), least significant bit first
 D.A.L. dsd_lsbf_planar      DSD (Direct Stream Digital), least significant bit first, planar
 D.A.L. dsd_msbf             DSD (Direct Stream Digital), most significant bit first
 D.A.L. dsd_msbf_planar      DSD (Direct Stream Digital), most significant bit first, planar
 D.A.L. dsicinaudio          Delphine Software International CIN audio
 D.A.L. dss_sp               Digital Speech Standard - Standard Play mode (DSS SP)
 DEA.LS dts                  DCA (DTS Coherent Acoustics) (decoders: dca ) (encoders: dca )
 ..A.L. dvaudio              DV audio
 DEA.L. eac3                 ATSC A/52B (AC-3, E-AC-3)
 D.A.L. evrc                 EVRC (Enhanced Variable Rate Codec)
 DEA..S flac                 FLAC (Free Lossless Audio Codec)
 DEA.L. g723_1               G.723.1
 D.A.L. g729                 G.729
 DEA.L. gsm                  GSM (decoders: gsm libgsm ) (encoders: libgsm )
 DEA.L. gsm_ms               GSM Microsoft variant (decoders: gsm_ms libgsm_ms ) (encoders: libgsm_ms )
 D.A.L. iac                  IAC (Indeo Audio Coder)
 ..A.L. ilbc                 iLBC (Internet Low Bitrate Codec)
 D.A.L. imc                  IMC (Intel Music Coder)
 D.A.L. interplay_dpcm       DPCM Interplay
 D.A.L. mace3                MACE (Macintosh Audio Compression/Expansion) 3:1
 D.A.L. mace6                MACE (Macintosh Audio Compression/Expansion) 6:1
 D.A.L. metasound            Voxware MetaSound
 D.A..S mlp                  MLP (Meridian Lossless Packing)
 D.A.L. mp1                  MP1 (MPEG audio layer 1) (decoders: mp1 mp1float )
 DEA.L. mp2                  MP2 (MPEG audio layer 2) (decoders: mp2 mp2float ) (encoders: mp2 mp2fixed libtwolame )
 DEA.L. mp3                  MP3 (MPEG audio layer 3) (decoders: mp3 mp3float ) (encoders: libmp3lame libshine )
 D.A.L. mp3adu               ADU (Application Data Unit) MP3 (MPEG audio layer 3) (decoders: mp3adu mp3adufloat )
 D.A.L. mp3on4               MP3onMP4 (decoders: mp3on4 mp3on4float )
 D.A..S mp4als               MPEG-4 Audio Lossless Coding (ALS) (decoders: als )
 D.A.L. musepack7            Musepack SV7 (decoders: mpc7 )
 D.A.L. musepack8            Musepack SV8 (decoders: mpc8 )
 DEA.L. nellymoser           Nellymoser Asao
 DEA.L. opus                 Opus (Opus Interactive Audio Codec) (decoders: opus libopus ) (encoders: libopus )
 D.A.L. paf_audio            Amazing Studio Packed Animation File Audio
 DEA.L. pcm_alaw             PCM A-law / G.711 A-law
 D.A..S pcm_bluray           PCM signed 16|20|24-bit big-endian for Blu-ray media
 D.A..S pcm_dvd              PCM signed 20|24-bit big-endian
 DEA..S pcm_f32be            PCM 32-bit floating point big-endian
 DEA..S pcm_f32le            PCM 32-bit floating point little-endian
 DEA..S pcm_f64be            PCM 64-bit floating point big-endian
 DEA..S pcm_f64le            PCM 64-bit floating point little-endian
 D.A..S pcm_lxf              PCM signed 20-bit little-endian planar
 DEA.L. pcm_mulaw            PCM mu-law / G.711 mu-law
 DEA..S pcm_s16be            PCM signed 16-bit big-endian
 DEA..S pcm_s16be_planar     PCM signed 16-bit big-endian planar
 DEA..S pcm_s16le            PCM signed 16-bit little-endian
 DEA..S pcm_s16le_planar     PCM signed 16-bit little-endian planar
 DEA..S pcm_s24be            PCM signed 24-bit big-endian
 DEA..S pcm_s24daud          PCM D-Cinema audio signed 24-bit
 DEA..S pcm_s24le            PCM signed 24-bit little-endian
 DEA..S pcm_s24le_planar     PCM signed 24-bit little-endian planar
 DEA..S pcm_s32be            PCM signed 32-bit big-endian
 DEA..S pcm_s32le            PCM signed 32-bit little-endian
 DEA..S pcm_s32le_planar     PCM signed 32-bit little-endian planar
 DEA..S pcm_s8               PCM signed 8-bit
 DEA..S pcm_s8_planar        PCM signed 8-bit planar
 DEA..S pcm_u16be            PCM unsigned 16-bit big-endian
 DEA..S pcm_u16le            PCM unsigned 16-bit little-endian
 DEA..S pcm_u24be            PCM unsigned 24-bit big-endian
 DEA..S pcm_u24le            PCM unsigned 24-bit little-endian
 DEA..S pcm_u32be            PCM unsigned 32-bit big-endian
 DEA..S pcm_u32le            PCM unsigned 32-bit little-endian
 DEA..S pcm_u8               PCM unsigned 8-bit
 D.A.L. pcm_zork             PCM Zork
 D.A.L. qcelp                QCELP / PureVoice
 D.A.L. qdm2                 QDesign Music Codec 2
 ..A.L. qdmc                 QDesign Music
 DEA.L. ra_144               RealAudio 1.0 (14.4K) (decoders: real_144 ) (encoders: real_144 )
 D.A.L. ra_288               RealAudio 2.0 (28.8K) (decoders: real_288 )
 D.A..S ralf                 RealAudio Lossless
 DEA.L. roq_dpcm             DPCM id RoQ
 DEA..S s302m                SMPTE 302M
 D.A..S shorten              Shorten
 D.A.L. sipr                 RealAudio SIPR / ACELP.NET
 D.A.L. smackaudio           Smacker audio (decoders: smackaud )
 ..A.L. smv                  SMV (Selectable Mode Vocoder)
 D.A.L. sol_dpcm             DPCM Sol
 DEA... sonic                Sonic
 .EA... sonicls              Sonic lossless
 DEA.L. speex                Speex (decoders: libspeex ) (encoders: libspeex )
 D.A..S tak                  TAK (Tom's lossless Audio Kompressor)
 D.A..S truehd               TrueHD
 D.A.L. truespeech           DSP Group TrueSpeech
 DEA..S tta                  TTA (True Audio)
 D.A.L. twinvq               VQF TwinVQ
 D.A.L. vima                 LucasArts VIMA audio (deprecated id) (decoders: adpcm_vima vima )
 D.A.L. vmdaudio             Sierra VMD audio
 DEA.L. vorbis               Vorbis (decoders: vorbis libvorbis ) (encoders: vorbis libvorbis )
 ..A.L. voxware              Voxware RT29 Metasound
 D.A... wavesynth            Wave synthesis pseudo-codec
 DEA.LS wavpack              WavPack (encoders: wavpack libwavpack )
 D.A.L. westwood_snd1        Westwood Audio (SND1) (decoders: ws_snd1 )
 D.A..S wmalossless          Windows Media Audio Lossless
 D.A.L. wmapro               Windows Media Audio 9 Professional
 DEA.L. wmav1                Windows Media Audio 1
 DEA.L. wmav2                Windows Media Audio 2
 D.A.L. wmavoice             Windows Media Audio Voice
 D.A.L. xan_dpcm             DPCM Xan
 ..D... bin_data             binary data
 ..D... dvd_nav_packet       DVD Nav packet
 ..D... klv                  SMPTE 336M Key-Length-Value (KLV) metadata
 ..D... otf                  OpenType font
 ..D... timed_id3            timed ID3 metadata
 ..D... ttf                  TrueType font
 DES... ass                  ASS (Advanced SSA) subtitle
 DES... dvb_subtitle         DVB subtitles (decoders: dvbsub ) (encoders: dvbsub )
 D.S... dvb_teletext         DVB teletext (decoders: libzvbi_teletextdec )
 DES... dvd_subtitle         DVD subtitles (decoders: dvdsub ) (encoders: dvdsub )
 D.S... eia_608              EIA-608 closed captions (decoders: cc_dec )
 D.S... hdmv_pgs_subtitle    HDMV Presentation Graphic Stream subtitles (decoders: pgssub )
 ..S... hdmv_text_subtitle   HDMV Text subtitle
 D.S... jacosub              JACOsub subtitle
 D.S... microdvd             MicroDVD subtitle
 DES... mov_text             MOV text
 D.S... mpl2                 MPL2 subtitle
 D.S... pjs                  PJS (Phoenix Japanimation Society) subtitle
 D.S... realtext             RealText subtitle
 D.S... sami                 SAMI subtitle
 ..S... srt                  SubRip subtitle with embedded timing
 DES... ssa                  SSA (SubStation Alpha) subtitle
 D.S... stl                  Spruce subtitle format
 DES... subrip               SubRip subtitle (decoders: srt subrip ) (encoders: srt subrip )
 D.S... subviewer            SubViewer subtitle
 D.S... subviewer1           SubViewer v1 subtitle
 D.S... text                 raw UTF-8 text
 D.S... vplayer              VPlayer subtitle
 DES... webvtt               WebVTT subtitle
 DES... xsub                 XSUB
root#
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wiak

Joined: 11 Dec 2007
Posts: 957
Location: not Bulgaria

PostPosted: Mon 23 Apr 2018, 10:18    Post subject:  

April, aac encoder is there in the long list you reported. So it is already in your ffmpeg so 'aac -strict experimental' command line I suggested should be working or there is something else wrong with your audio recording setup
That is, the problem is not ffmpeg IMO so recompiling it won't help, maybe you have an alda or audio hardware related issue. Maybe not hw 0,0 on your system?

wiak
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norgo


Joined: 13 Nov 2015
Posts: 278
Location: Germany

PostPosted: Mon 23 Apr 2018, 12:32    Post subject:  

wiak wrote:

Code:
aac -strict experimental
or you can use
aac -strict -2
which is just a numeric way of selecting the same ffmpeg-inbuilt experimental aac codec

Quote:
Native FFmpeg AAC Encoder
The native FFmpeg AAC encoder. This is currently the second highest-quality AAC encoder available in FFmpeg and does not require an external library like the other AAC encoders described here. This is the default AAC encoder.

Note: -strict experimental (or -strict -2) was previously required for this encoder, but it is ​no longer experimental and these options are unnecessary since 5 December 2015.

Source:https://trac.ffmpeg.org/wiki/Encode/AAC#NativeFFmpegAACEncoder

only for information
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april

Joined: 14 Sep 2013
Posts: 1241
Location: Green Island baby!

PostPosted: Mon 23 Apr 2018, 17:20    Post subject:  

Probably the best result is from ozsouth 's post
Turning up the internal mike made a noticeable difference
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