FFmpeg Mplayer VLC - News & Howtos

Some other ways of getting info and help:

List any AVOptions ("private" encoder options) and supported stuff for an encoder:

Code:

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$ ffmpeg -h encoder=aac
Encoder aac [AAC (Advanced Audio Coding)]:
    Supported sample rates: 96000 88200 64000 48000 44100 32000 24000 22050 16000 12000 11025 8000 7350
    Supported sample formats: fltp
AAC encoder AVOptions:
  -stereo_mode      <int>        E...A. Stereo coding method (from -1 to 1)
    auto                        E...A. Selected by the Encoder
    ms_off                      E...A. Disable Mid/Side coding
    ms_force                    E...A. Force Mid/Side for the whole frame if possible
  -aac_coder        <int>        E...A.  (from 0 to 3)

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List any AVOptions and supported stuff for a decoder:

Code:

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$ ffmpeg -h decoder=vorbis
Decoder vorbis [Vorbis]:
    Supported sample formats: fltp
    Supported channel layouts: mono stereo 3.0 quad 5.0 5.1 6.1 7.1

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List AVOptions for a filter:

Code:

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$ ffmpeg -h filter=curves
Filter curves
  Adjust components curves.
curves AVOptions:
  red              <string>    ..FV.. set red points coordinates
  r                <string>    ..FV.. set red points coordinates
  green            <string>    ..FV.. set green points coordinates
  g                <string>    ..FV.. set green points coordinates
  blue              <string>    ..FV.. set blue points coordinates
  b                <string>    ..FV.. set blue points coordinates
  preset            <int>        ..FV.. select a color curves preset (from 0 to 10)
    color_negative              ..FV..
    cross_process                ..FV..
    darker                      ..FV..
    increase_contrast              ..FV..
    lighter                      ..FV..
    linear_contrast              ..FV..
    medium_contrast              ..FV..
    negative                    ..FV..
    strong_contrast              ..FV..
    vintage                      ..FV..

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I have only just realised that changes and tips for the commandline ripper audio cd abcde could really fit into this thread as a 'similar program' to the great media player and converters previously mentioned. I am fortunate enough to be one of the newest abcde developers and I would dearly love involvement by the knowledgeable people in this thread and on these Forums to make abcde a better application. Plenty of issues to have a look at here if bug squashing is your strength:

http://code.google.com/p/abcde/issues/list

and I will be more than happy to facilitate any suggested corrections and enhancements to the abcde code, always with correct attribution of work to the appropriate person. Have a look here for recent development:

http://code.google.com/p/abcde/source/list

Encoding with NeroAacEnc and opusenc a couple of really great recent additions to abcde!!

Edit: I forget my own patch which upgraded the Musepack requirement from SV7 to SV8 :)

Quote:

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Originally Posted by FakeOutdoorsman

Also, if you're a student you should consider participating in Google Summer of Code with FFmpeg. You can get paid for coding and get to interact with an open-source project. See FFmpeg Summer of Code 2013 for more info.

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Unfortunately FFmpeg was again not accepted for GSoC.

If you have a 24-bit flac and you want to retain the 24-bit there is a way [converting it to wv] about 390k here



KEEP 24-BIT [flac to lossy]

Code:

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ffmpeg -i file.flac -acodec pcm_s24le -ar 48000 file.wav \
&& wavpack -b4x file.wav  && rm file.wav

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What does the wavpack line do?

hi esoup it turns the wav into a 390k lossy wavpack or thereabouts retaining the 24-bit [b2 instead of b4 about 260k]

Ah, OK.

FFmpeg: DRC (Dynamic Range Compression) audio with Sox

Code:

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ffmpeg -i 'FILE_INPUT.mkv' -vn -f sox - | sox -t sox - -c 2 -b 16 -t wav - compand 0.0,1 6:-70,-43,-20 -5 -90 0.1 | ffmpeg -y -i - -c:a libfaac -b:a 112k -f mp4 out.m4a

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the file out.m4a can be muxed with mkvmerge gui (or other).


Or auto muxing the drc audio in new mkv

Code:

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ffmpeg -i originalvideo.mkv -vn -f sox - | sox -t sox - -c 2 -b 16 -t wav - compand 0.0,1 6:-70,-43,-20 -5 -90 0.1 | ffmpeg -y -i originalvideo.mkv -i - -map 0:0 -map 1:0 -f matroska -c:v copy -c:a libfaac -b:a 112k out_drc.mkv

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or auto muxing the drc audio as second audio in new mkv:

Code:

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ffmpeg -i originalvideo.mp4 -vn -f sox - | sox -t sox - -c 2 -b 16 -t wav - compand 0.0,1 6:-70,-43,-20 -5 -90 0.1 | ffmpeg -y -i originalvideo.mp4 -i - -map 0:0 -map 0:1 -map 1:0 -f matroska -c:v copy -c:a:0 copy -c:a:1 libfaac -b:a:1 112k -metadata:s:1 language=eng -metadata:s:2 language=eng_drc out_2audio_drc.mkv

---

Some compand preset here

ffmpeg 1.2
sox 14.4.1

Hi,

I am wondering if there is any good instruction to compile mplayer with VAAPI support? There is a ppa but apparently it doesn't get updated https://launchpad.net/~sander-vangrieken/+archive/vaapi

Thanks.

None that I am aware of I'm afraid :(