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• FFMPEG : Change Video during encoding (using mapping)

  18 octobre 2013, par Tchoupi

  I'm currently trying to concat several videos using a complex filter :

  ffmpeg.exe -threads 8 -i "D:\Temporary0.mp4"  -i "D:\Temporary1.mp4"  -i "D:\Temporary2.mp4"  -filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]  concat=n=3:v=1:a=1 [v] [a] " -map "[v]" -map "[a]"  -vcodec libx264 -b 2500000 -s 1920:1080 -y D:\EditedVideo.mp4

  This command work fine.
  Edit : Here the output of the command :

  ffmpeg version N-56297-g7ac6c63 Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Sep 15 2013 18:02:28 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libblu
  
  ray --enable-libcaca --enable-libfreetype --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
  
  ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-li
  
  bvorbis --enable-libvpx --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
  
    libavutil      52. 43.100 / 52. 43.100
  
    libavcodec     55. 31.101 / 55. 31.101
  
    libavformat    55. 16.102 / 55. 16.102
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 84.100 /  3. 84.100
  
    libswscale      2.  5.100 /  2.  5.100
  
    libswresample   0. 17.103 /  0. 17.103
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Temporary0.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.16.102
  
    Duration: 00:00:02.91, start: 0.033333, bitrate: 8998 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 8965 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Temporary1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.16.102
  
    Duration: 00:00:05.00, start: 0.023220, bitrate: 846 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 835 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #1:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 1 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #2, mov,mp4,m4a,3gp,3g2,mj2, from 'D:\Temporary2.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.16.102
  
    Duration: 00:00:04.35, start: 0.033333, bitrate: 4684 kb/s
  
      Stream #2:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 4581 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #2:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Please use -b:a or -b:v, -b is ambiguous
  
  [libx264 @ 04f617e0] using SAR=1/1
  
  [libx264 @ 04f617e0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
  
  [libx264 @ 04f617e0] profile High, level 4.0
  
  [libx264 @ 04f617e0] 264 - core 135 r2345 f0c1c53 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subm
  
  e=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1
  
  interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 r
  
  c=abr mbtree=1 bitrate=2500 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
  
  Output #0, mp4, to 'D:\EditedVideo.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf55.16.102
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 2500 kb/s, 12800 tbn, 25 tbc
  
      Stream #0:1: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, s16, 128 kb/s
  
  Stream mapping:
  
    Stream #0:0 (h264) -> concat:in0:v0
  
    Stream #0:1 (aac) -> concat:in0:a0
  
    Stream #1:0 (h264) -> concat:in1:v0
  
    Stream #1:1 (aac) -> concat:in1:a0
  
    Stream #2:0 (h264) -> concat:in2:v0
  
    Stream #2:1 (aac) -> concat:in2:a0
  
    concat:out:v0 -> Stream #0:0 (libx264)
  
    concat:out:a0 -> Stream #0:1 (libvo_aacenc)
  
  Press [q] to stop, [?] for help
  
  frame=  306 fps= 43 q=-1.0 Lsize=    3557kB time=00:00:12.29 bitrate=2369.4kbits/s dup=1 drop=0
  
  video:3353kB audio:193kB subtitle:0 global headers:0kB muxing overhead 0.288541%
  
  [libx264 @ 04f617e0] frame I:3     Avg QP:21.78  size:173526
  
  [libx264 @ 04f617e0] frame P:112   Avg QP:25.76  size: 17363
  
  [libx264 @ 04f617e0] frame B:191   Avg QP:31.04  size:  5068
  
  [libx264 @ 04f617e0] consecutive B-frames: 11.8% 14.4%  2.0% 71.9%
  
  [libx264 @ 04f617e0] mb I  I16..4: 14.6% 82.7%  2.6%
  
  [libx264 @ 04f617e0] mb P  I16..4:  3.5%  8.8%  0.2%  P16..4: 30.1%  5.3%  2.6%  0.0%  0.0%    skip:49.4%
  
  [libx264 @ 04f617e0] mb B  I16..4:  0.7%  1.1%  0.0%  B16..8: 21.6%  1.2%  0.1%  direct: 1.2%  skip:74.1%  L0:47.0% L1:50.6% BI: 2.4%
  
  [libx264 @ 04f617e0] final ratefactor: 25.69
  
  [libx264 @ 04f617e0] 8x8 transform intra:70.8% inter:88.5%
  
  [libx264 @ 04f617e0] coded y,uvDC,uvAC intra: 34.3% 50.2% 7.2% inter: 7.3% 13.3% 0.3%
  
  [libx264 @ 04f617e0] i16 v,h,dc,p: 22% 33%  7% 37%
  
  [libx264 @ 04f617e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 17% 22% 34%  4%  5%  4%  5%  4%  5%
  
  [libx264 @ 04f617e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 27% 22% 18%  5%  6%  6%  5%  6%  4%
  
  [libx264 @ 04f617e0] i8c dc,h,v,p: 60% 21% 16%  3%
  
  [libx264 @ 04f617e0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 04f617e0] ref P L0: 62.6%  9.1% 19.8%  8.5%
  
  [libx264 @ 04f617e0] ref B L0: 85.3% 12.6%  2.1%
  
  [libx264 @ 04f617e0] ref B L1: 92.4%  7.6%
  
  [libx264 @ 04f617e0] kb/s:2243.97
  
  [libvo_aacenc @ 0420e900] 1 frames left in the queue on closing

  I would like to update this command to change volume during concat and encode time :

  ffmpeg.exe -threads 8 -i "D:\Temporary0.mp4"  -i "D:\Temporary1.mp4"  -i "D:\Temporary2.mp4"  -filter_complex "[0:v] [0:a] [1:v] [1:a] [2:v] [2:a]  concat=n=3:v=1:a=1 [v] [a] " -map "[v]" -map "[a]"  -vcodec libx264 -b 2500000 -s 1920:1080 -af volume="volume=20dB:precision=double" -y D:\EditedVideo.mp4

  This command is executed but the audio stream is not altered with the +20db

  PS : If I do a simple encoding command like

  ffmpeg.exe -i source -vcodec libx264 -af volume="volume=20dB:precision=double" -y output

  Command work fine and audio stream is modified.

  So How can I Do to concat my videos and change audio volume at the same time ?

  Thanks

• Unable to mux two live streams from webcam using ffmpeg in linux

  24 octobre 2013, par user2902884

  We are trying to multiplex two live streams from webcams into an output file using ffmpeg in linux as follows,

  fmpeg -i "http://10.41.2.57:8090/webcam.asf" -i "http://10.41.2.49:8090/webcam.asf" -map 0:0 -map 1:0 -t 60 "/home/../MuxLiveStream1.flv" 

  ffmpeg stops responding at after a while and the console shows the following output,

  FFmpeg version SVN-r0.5.9-4:0.5.9-0ubuntu0.10.04.3, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: --extra-version=4:0.5.9-0ubuntu0.10.04.3 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --disable-stripping --disable-vhook --enable-runtime-cpudetect --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 1 / 52.20. 1
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libavfilter    0. 4. 0 /  0. 4. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Jan 24 2013 19:42:59, gcc: 4.4.3
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 2.00 (2/1)
  
  Input #0, flv, from 'http:10.41.2.154:8090/webcam.flv':
  
    Duration: 00:00:00.00, start: 1587016.579000, bitrate: 200 kb/s
  
      Stream #0.0: Video: flv, yuv420p, 320x240, 200 kb/s, 2 tbr, 1k tbn, 1k tbc
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 2.00 (2/1)
  
  Input #1, flv, from 'http:10.41.2.57:8090/webcam.flv':
  
    Duration: 00:00:00.00, start: 1587230.806000, bitrate: 200 kb/s
  
      Stream #1.0: Video: flv, yuv420p, 320x240, 200 kb/s, 2 tbr, 1k tbn, 1k tbc
  
  Number of stream maps must match number of output streams

  Is there a mistake in the command or is there anything else that needs to be done ?

• Revision 820201caa8 : vp9_thread : add vp9_worker_execute() cherry-picked from : commit 988b70844e03efc

  16 octobre 2013, par James Zern

  Changed Paths :
   Modify /test/vp9_thread_test.cc

  
   Modify /vp9/decoder/vp9_thread.c

  
   Modify /vp9/decoder/vp9_thread.h

  
  
  vp9_thread : add vp9_worker_execute()

  cherry-picked from :
  commit 988b70844e03efcfcc075a9bc25d846670494f36
  Author : Pascal Massimino <pascal.massimino@gmail.com>
  Date : Fri Aug 2 11:15:16 2013 -0700

  add WebPWorkerExecute() for convenient bypass

  This is mainly for re-using the worker structs without using the
  thread.

  Change-Id : I8e1be29e53874ef425b15c192fb68036b4c0a359

  Original source :
  http://git.chromium.org/webm/libwebp.git
  100644 blob c0d318aee628fdf9ba4876451a28aa978f1066b8 src/utils/thread.c
  100644 blob c2b92c9fe353f8e514f78922f3d237204a9cbc66 src/utils/thread.h

  Change-Id : I13fe92b1e94062bb99fdeeb7cb0b4b0575d27793