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• lavfi/mp : remove mp=tinterlace wrapper

  28 avril 2013, par Stefano Sabatini

  lavfi/mp : remove mp=tinterlace wrapper
  From various tests, there is no evidence that the filter is faster than
  
  the native tinterlace, and it has several more limitations and a few
  
  bugs.
  See thread :
  
  Subject : [FFmpeg-devel] [NOPATCH] lavfi/mp : drop tinterlace wrapper
  
  Date : Wed, 5 Sep 2012 00:26:01 +0200
  

  • [DH] doc/filters.texi
  • [DH] libavfilter/Makefile
  • [DH] libavfilter/libmpcodecs/vf_tinterlace.c
  • [DH] libavfilter/version.h
  • [DH] libavfilter/vf_mp.c

• ffmpeg hangs when run in background

  25 août 2014, par yoosha

  If I run ffmpeg as follows :

  ffmpeg -i H264-media-4.264 4.avi

  It works OK (i.e. 4.avi created OK). However, if I try to run it in background :

  ffmpeg -i H264-media-4.264 4.avi &

  it hangs ! (and 4.avi never created)
  Any Idea ?

  ---

  Note : The problem is an isolation of of similar problem in python when trying to run it as subprocess and there it hanged as well : ff.py includes

  ps = subprocess.Popen(ffmpeg_list, stderr=subprocess.STDOUT,stdout = subprocess.PIPE)

  and running ./ff.py runs OK, ./ff.py & hangs too.

  • System : CentOS 6.6
  • ffmpeg : 0.10.2

  Results from successful run :

   ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
  
   built on Mar 20 2012 04:34:50 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libdirac --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --disable-stripping
  
    libavutil      51. 35.100 / 51. 35.100
  
    libavcodec     53. 61.100 / 53. 61.100
  
    libavformat    53. 32.100 / 53. 32.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 61.100 /  2. 61.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  [h264 @ 0x24eac00] max_analyze_duration 5000000 reached at 5000000
  
  [h264 @ 0x24eac00] Estimating duration from bitrate, this may be inaccurate
  
  Input #0, h264, from 'H264-media-4.264':
  
    Duration: N/A, bitrate: N/A
  
      Stream #0:0: Video: h264 (Baseline), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 25 fps, 25 tbr, 1200k tbn, 50 tbc
  
  [buffer @ 0x24efa60] w:640 h:480 pixfmt:yuv420p tb:1/1000000 sar:1/1 sws_param:
  
  [mpeg4 @ 0x24eb540] removing common factors from framerate
  
  Output #0, avi, to '4.avi':
  
    Metadata:
  
      ISFT            : Lavf53.32.100
  
      Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 tbn, 25 tbc
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> mpeg4)
  
  Press [q] to stop, [?] for help
  
  frame= 2324 fps=477 q=31.0 Lsize=    2603kB time=00:01:32.96 bitrate= 229.4kbits/s    
  
  video:2542kB audio:0kB global headers:0kB muxing overhead 2.409572%

  Results from hanged run :

  ffmpeg version 0.10.2 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Mar 20 2012 04:34:50 with gcc 4.4.6 20110731 (Red Hat 4.4.6-3)
  
    configuration: --prefix=/usr --libdir=/usr/lib64 --shlibdir=/usr/lib64 --mandir=/usr/share/man --enable-shared --enable-runtime-cpudetect --enable-gpl --enable-version3 --enable-postproc --enable-avfilter --enable-pthreads --enable-x11grab --enable-vdpau --disable-avisynth --enable-frei0r --enable-libopencv --enable-libdc1394 --enable-libdirac --enable-libgsm --enable-libmp3lame --enable-libnut --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --extra-cflags='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -fPIC' --disable-stripping
  
    libavutil      51. 35.100 / 51. 35.100
  
    libavcodec     53. 61.100 / 53. 61.100
  
    libavformat    53. 32.100 / 53. 32.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 61.100 /  2. 61.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  
  
  
  
  [5]+  Stopped                 ffmpeg -i H264-media-4.264 4.avi

• Download Video from m3u8 with ffmpeg and multibitrate

  24 avril 2013, par AbrahamSustaita

  I need to download the videos from a streaming site (Akamai) once they are recorded. I can do it with ffmpeg without troubles, but only if the manifest file has only one video stream. If it has multibitrate then I got into problems. Is there anyway I can tell ffmpeg to download one or other video ?

  This is the line I'm using :

  ffmpeg -i http://akamai.link.com/master.m3u8 -acodec copy -vcodec copy  -y -loglevel info -f mp4 destiny.mp4

  EDIT : Adding response :

  This is the file I'm using :

  #EXTM3U
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=714000,RESOLUTION=640x480,CODECS="avc1.77.30, mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_av-p.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=714000,RESOLUTION=640x480,CODECS="avc1.77.30, mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_av-b.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=64000,CODECS="mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_a-p.m3u8?sd=10&rebase=on
  
  #EXT-X-STREAM-INF:PROGRAM-ID=1,BANDWIDTH=64000,CODECS="mp4a.40.34"
  
  http://urlAt.akamai.com@channel/index_650_a-b.m3u8?sd=10&rebase=on

  ffmpeg response correctly, but the file is not complete.

  ADDING OUTPUT WITH -map PARAMTER

  dev:/var/www/localhost/htdocs# ffmpeg -map -i simple.m3u8 -acodec copy -vcodec copy  -y -loglevel info -f mp4 simple.mp4
  
  ffmpeg version 1.0 Copyright (c) 2000-2012 the FFmpeg developers
  
    built on Oct 25 2012 08:01:45 with gcc 4.7.2 (Alpine 4.7.2-r0)
  
    configuration: --prefix=/usr --enable-gpl --enable-libmp3lame --enable-libvorbis --enable-libfaac --enable-libvpx --enable-libxvid --enable-libx264 --enable-libtheora --enable-nonfree --enable-postproc --enable-pic --enable-pthreads --enable-shared --enable-x11grab --disable-asm --disable-stripping --disable-static --disable-debug
  
    libavutil      51. 73.101 / 51. 73.101
  
    libavcodec     54. 59.100 / 54. 59.100
  
    libavformat    54. 29.104 / 54. 29.104
  
    libavdevice    54.  2.101 / 54.  2.101
  
    libavfilter     3. 17.100 /  3. 17.100
  
    libswscale      2.  1.101 /  2.  1.101
  
    libswresample   0. 15.100 /  0. 15.100
  
    libpostproc    52.  0.100 / 52.  0.100
  
  Invalid input file index: 0.