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Sur d’autres sites (9937)

  • How to Extract motion vectors using FFMPEG on HADOOP from a mp4 video

    27 novembre 2016, par MEHDI SAOUDI

    I want to manipulate videos stored in HDFS with the FFMPEG libraries and store the text file results on HDFS or on Hbase.

    to clarify : I want to extract the motion vectors from a mp4 video with FFMPEG, I can do this locally but I want to do this on my hadoop cluster. locally The command is :

    ffmpeg -flags2 +export_mvs -i input.mp4 -vf codecview=mv=pf+bf+bb output.mp4

    And then I modify the vf_codecview.c file to have the motion vector on a text file. For the moment my goal is to turn the command on hadoop on one video and then on my database of videos.

    thanks for your help

  • audio sample format s16p, ffmpeg or audio codec bug ?

    5 février 2016, par Arton

    I have a video file and I had dumped the video info to a txt file with ffmpeg nearly 3 year ago.

    ...
    
Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16, 256 kb/s
    
Stream #0:2[0x1c1]: Audio: mp2, 48000 Hz, stereo, s16, 256 kb/s

    But I found the format changed when I used the update ffprobe (ffprobe version N-78046-g46f67f4 Copyright (c) 2007-2016 the FFmpeg developers).

    ...
    
Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 256 kb/s
    
Stream #0:2[0x1c1]: Audio: mp2, 48000 Hz, stereo, s16p, 256 kb/s

    With the same video, its sample format changes to s16p.

    I implemented a simple video player which uses ffmpeg. It can play video 3 years ago, but failed to output the correct pcm stream after changing to update ffmpeg. I spent lots time and finally found that the audio should have been s16 instead of s16p. The decoded audio stream works after I added the line before calling avcodec_decode_audio4,

    audio_codec_ctx->sample_fmt = AV_SAMPLE_FMT_S16

    but it is just a hack. Does anyone encounter this issue ? How to make ffmpeg work correctly ? Any hint is appreciated. Thanks !

  • merge (video and sound) with (background music)

    27 novembre 2016, par Nir di

    i have video file vid.mpg that contain video and audio(speaking) and audio file aud.wav that contain background music.

    now, i want to merge them together.

    here is the command that i use :

    ffmpeg -i vid.mpg -i aud.mp3 -c:v copy  -filter_complex "[0:a]aformat = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a][1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    and this is the error that i get as response :

    [Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size

    in addition i add the full log :

    C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[1:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg
    
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
    
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
    
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
    
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
    
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
    
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
    
-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 27.101 / 57. 27.101
    
  libavformat    57. 28.100 / 57. 28.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 39.100 /  6. 39.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, mpeg, from 'vid.mpg':
    
  Duration: 00:00:33.62, start: 0.529978, bitrate: 22407 kb/s
    
    Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p(tv), 1920x1080 [SAR 1:
    
1 DAR 16:9], max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0:1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 192 kb/s
    
[mp3 @ 00000000003e3c20] Skipping 0 bytes of junk at 253.
    
Input #1, mp3, from 'aud.mp3':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
  Duration: 00:01:03.03, start: 0.025057, bitrate: 128 kb/s
    
    Stream #1:0: Audio: mp3, 44100 Hz, stereo, s16p, 128 kb/s
    
    Metadata:
    
      encoder         : Lavc57.27
    
File 'out.mpg' already exists. Overwrite
    
 ? [y/N] y
    
[Parsed_amerge_4 @ 00000000003a36e0] No channel layout for input 1
    
[Parsed_amerge_4 @ 00000000003a36e0] Input channel layouts overlap: output layou
    
t will be determined by the number of distinct input channels
    
[mpeg @ 000000000289a4e0] VBV buffer size not set, using default size of 130KB
    
If you want the mpeg file to be compliant to some specification
    
Like DVD, VCD or others, make sure you set the correct buffer size
    
Output #0, mpeg, to 'out.mpg':
    
  Metadata:
    
    encoder         : Lavf57.28.100
    
    Stream #0:0: Video: mpeg2video, yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-3
    
1, max. 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
    Stream #0:1: Audio: mp2, 44100 Hz, stereo, s16, 384 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc57.27.101 mp2
    
Stream mapping:
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #1:0 (mp3) -> aformat
    
  Stream #0:0 -> #0:0 (copy)
    
  amerge -> Stream #0:1 (mp2)
    
Press [q] to stop, [?] for help
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=234676 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=236705 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=238746 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=240787 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=242828 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=244869 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=246910 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=248951 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=250992 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=253033 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=255074 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=257115 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=259156 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=261197 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=263238 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=265279 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=267320 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=269361 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=271402 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=273443 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=275484 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=277525 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=279566 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=281607 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=283648 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=285689 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=287730 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=289771 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=291812 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=293853 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=295894 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=297935 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=299976 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=302017 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=304058 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=306099 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=308140 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=310181 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=312222 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=314263 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=316304 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=318345 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=320386 size=322616
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
[mpeg @ 000000000289a4e0] packet too large, ignoring buffer limits to mux it
    
[mpeg @ 000000000289a4e0] buffer underflow st=0 bufi=322427 size=322616
    
frame=    1 fps=0.0 q=-1.0 Lsize=     318kB time=00:00:00.00 bitrate=N/A speed=
    
  0x
    
video:315kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing o
    
verhead: 0.934858%
    

    
C:\bina\ffmpeg\bin>ffmpeg -i vid.mpg -i
    
aud.mp3 -c:v copy  -filter_complex "[0:a]aform
    
at = fltp:44100:stereo,apad[0a];[1]aformat=fltp:44100:stereo,volume=0.1[1a];[0a]
    
[1a]amerge[a]" -map 0:v -map "[a]" -ac 2 -t 0 out.mpg

    what am i doing wrong ? and how can i solve it ?

    please help.

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