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• ffmpeg audio video synchronisation mux

  19 juillet 2013, par Rahul Kumar

  I am trying to mux audio and video but the resultant is not what expected. The video is not shown in the output.

  rahul@hp : $ ffmpeg -i /Desktop/a.m4a -i /Desktop/a.mp4 -acodec copy -vcodec copy /Desktop/output.mkv
  ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
    built on Apr  2 2013 17:00:59 with gcc 4.6.3
  *** THIS PROGRAM IS DEPRECATED ***
  This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/rahul/Desktop/a.m4a' :
    Metadata :
      major_brand : dash
      minor_version : 0
      compatible_brands : iso6mp41
      creation_time : 2013-05-17 06:34:22
    Duration : 00:16:41.01, start : 500.506122, bitrate : 127 kb/s
      Stream #0.0(und) : Audio : aac, 44100 Hz, stereo, s16
      Metadata :
        creation_time : 2013-05-17 06:34:22
  Seems stream 0 codec frame rate differs from container frame rate : 47.95 (48000/1001) -> 23.97 (45000/1877)
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/home/rahul/Desktop/a.mp4' :
  
    Metadata :
  
      major_brand : dash
  
      minor_version : 0
  
      compatible_brands : iso6avc1mp41
  
      creation_time : 2013-05-17 06:34:22
  
    Duration : 00:16:40.61, start : 500.316311, bitrate : 675 kb/s
  
      Stream #1.0(und) : Video : h264 (Main), yuv420p, 1280x720, 23.97 tbr, 90k tbn, 47.95 tbc
  
      Metadata :
  
        creation_time : 2013-05-17 06:34:22
  
  Output #0, matroska, to '/home/rahul/Desktop/output.mkv' :
  
    Metadata :
  
      major_brand : dash
  
      minor_version : 0
  
      compatible_brands : iso6mp41
  
      creation_time : 2013-05-17 06:34:22
  
      encoder : Lavf53.21.1
  
      Stream #0.0(und) : Video : avc1 / 0x31637661, yuv420p, 1280x720, q=2-31, 1k tbn, 23.98 tbc
  
      Metadata :
  
        creation_time : 2013-05-17 06:34:22
  
      Stream #0.1(und) : Audio : aac, 44100 Hz, stereo
  
      Metadata :
  
        creation_time : 2013-05-17 06:34:22
  
  Stream mapping :
  
    Stream #1.0 -> #0.0
  
    Stream #0.0 -> #0.1
  
  Press ctrl-c to stop encoding
  
  frame=    0 fps=  0 q=-1.0 Lsize=   15643kB time=500.51 bitrate= 256.0kbits/s    
  
  video:0kB audio:15493kB global headers:0kB muxing overhead 0.967810%
  
  rahul@hp : $
  

  i tried using

  -map 0:v:0

  -map 1:v:0

  -map 0:v:1

  but all showed

  Number of stream maps must match number of output streams
  

• does ffmpeg not support rtsp push with udp ?

  29 septembre 2017, par jimmy

  I’m trying to push a mp4 file through rtsp,and work ok using the cmd below :

  ffmpeg  -i 1.mp4  -vcodec copy -an -rtsp_transport tcp -f rtsp rtsp://192.168.164.40/test.sdp

  But when I try rtsp with udp protocol,it’s not work,cmd like this :

  ffmpeg  -i 1.mp4  -vcodec copy -an -f rtsp rtsp://192.168.164.40/test.sdp

  I tryed to add "-preset:v ultrafast -tune:v zerolatency",and it not worked,and I trace the package flow,and find that ffmpeg just TEARDOWN rtsp after 192.168.164.40 reply RECORD call.

  Below is the output log :

  ffmpeg version 3.3.2 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
  
    configuration: --enable-gpl --enable-nonfree --prefix=/home/share/_release --cc= --enable-nvenc --enable-cuda --enable-cuvid --enable-libnpp --enable-static --disable-shared --disable-debug --extra-cflags='-I/home/server/share/_release/include -I/usr/local/cuda/include' --extra-ldflags='-L/home/server/share/_release/lib -L/usr/local/cuda/lib64 -lm -ldl' --disable-ffplay --disable-ffprobe --disable-ffserver --disable-doc --enable-postproc --enable-zlib --enable-parsers --enable-libx264 --enable-libmp3lame --enable-libfdk-aac --enable-pthreads --extra-libs=-lpthread --enable-encoders --enable-decoders --enable-avfilter --enable-muxers --enable-demuxers
  
    libavutil      55. 58.100 / 55. 58.100
  
    libavcodec     57. 89.100 / 57. 89.100
  
    libavformat    57. 71.100 / 57. 71.100
  
    libavdevice    57.  6.100 / 57.  6.100
  
    libavfilter     6. 82.100 /  6. 82.100
  
    libswscale      4.  6.100 /  4.  6.100
  
    libswresample   2.  7.100 /  2.  7.100
  
    libpostproc    54.  5.100 / 54.  5.100
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/server/share/media/1.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isom
  
      creation_time   : 2017-02-08T02:33:57.000000Z
  
      encoder         : My MP4Box GUI 0.6.0.6 /my-mp4box-gui.zymichost.com>
  
    Duration: 00:57:23.35, start: 0.000000, bitrate: 330 kb/s
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 1280x720 [SAR 1:1 DAR 16:9], 164 kb/s, 30 fps, 30 tbr, 30k tbn, 60 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-12-23T15:11:53.000000Z
  
        handler_name    : 1.mp4
  
        encoder         : AVC Coding
  
      Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
  
      Metadata:
  
        creation_time   : 2017-02-08T02:34:00.000000Z
  
        handler_name    : 1.mp4
  
      Stream #0:2(und): Data: none (rtp  / 0x20707472), 25 kb/s (default)
  
      Metadata:
  
        creation_time   : 2017-02-08T02:34:03.000000Z
  
        handler_name    : GPAC ISO Hint Handler
  
      Stream #0:3(und): Data: none (rtp  / 0x20707472), 9 kb/s (default)
  
      Metadata:
  
        creation_time   : 2017-02-08T02:34:07.000000Z
  
        handler_name    : GPAC ISO Hint Handler
  
  Output #0, rtsp, to 'rtsp://192.168.164.40/test.sdp':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 1
  
      compatible_brands: isom
  
      encoder         : Lavf57.71.100
  
      Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 164 kb/s, 30 fps, 30 tbr, 90k tbn, 30 tbc (default)
  
      Metadata:
  
        creation_time   : 2015-12-23T15:11:53.000000Z
  
        handler_name    : 1.mp4
  
        encoder         : AVC Coding
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  av_interleaved_write_frame(): Invalid argument
  
  frame=    1 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=0.0647x    
  
  video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB 
  
  muxing overhead: unknown
  
  Conversion failed!

  Here is some of the debug log,past it here

      Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [rtp @ 0x27379c0] Sending NAL 6 of len 15 M=0
  
  [rtp @ 0x27379c0] Sending NAL 5 of len 42371 M=1
  
  [rtp @ 0x27379c0] NAL size 42371 > 1460
  
  av_interleaved_write_frame(): Invalid argument
  
  No more output streams to write to, finishing.
  
  [AVIOContext @ 0x2d4ad80] Statistics: 0 seeks, 32 writeouts
  
  frame=    1 fps=0.0 q=-1.0 Lsize=N/A time=00:00:00.00 bitrate=N/A speed=0.0743x    
  
  video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  Input file #0 (/home/server/share/media/1.mp4):
  
  Input stream #0:0 (video): 1 packets read (42394 bytes); 
  
    Input stream #0:1 (audio): 0 packets read (0 bytes); 
  
    Input stream #0:2 (data): 0 packets read (0 bytes); 
  
    Input stream #0:3 (data): 0 packets read (0 bytes); 
  
    Total: 1 packets (42394 bytes) demuxed
  
  Output file #0 (rtsp://192.168.164.40/test.sdp):
  
    Output stream #0:0 (video): 1 packets muxed (42394 bytes); 
  
  Total: 1 packets (42394 bytes) muxed
  
  0 frames successfully decoded, 0 decoding errors
  
  [AVIOContext @ 0x273afa0] Statistics: 2119132 bytes read, 2 seeks
  
  Conversion failed!

  I googled one day up with no idea,any one helps me !

• ffmpeg concat vidoes Could not find codec parameters for stream 1

  25 février 2017, par Moji

  I’m trying to concat 3 vidoes, each is converted to mpg beforehand, when I run the command to concat, it gives me this error (But still produces the output with no audio)

  Could not find codec parameters for stream 1 (Audio: mp2, 0 channels): unspecified frame size
  
  Consider increasing the value for the 'analyzeduration' and 'probesize'  options
  
  Input #0, mpeg, from 'concat:intermediate1.mpg|intermediate2.mpg|intermediate3.mpg':
  
  Duration: 00:00:25.73, start: 0.540000, bitrate: 2626 kb/s
  
  Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p(tv), 480x414 [SAR 1:1 DAR 80:69], 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
  Stream #0:1[0x1c0]: Audio: mp2, 0 channels
  
  [mpeg @ 0000000002766ba0] 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 'intermediate_all.mpg':
  
  Metadata:
  
  encoder  : Lavf57.50.100
  
  Stream #0:0: Video: mpeg1video, yuv420p(tv), 480x414 [SAR 1:1 DAR 80:69], q=2-31, 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  [mpeg @ 0000000002766ba0] Timestamps are unset in a packet for stream 0.  This is deprecated and will stop working in the future. Fix your code to set the   timestamps properly
  
  frame= 1151 fps=0.0 q=-1.0 Lsize=    7834kB time=00:00:40.81  bitrate=1572.5kbits/s speed= 346x
  
  video:7792kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.535638%

  First and third videos are made by just one picture (first one 10 second and the third 5 second long) and there is no audio for them.
  the Second video which has Audio, is converted to mpg from mov by running this command :

  -i test.mov -qscale:v 1 -y intermediate2.mpg

  And I’m using this command to merge them all together :

  -i concat:\"intermediate1.mpg|intermediate2.mpg|intermediate3.mpg\" -c copy -y intermediate_all.mpg

  the final output "intermediate_all.mpg" has no audio at all.

  I also tried putting ’analyzeduration’ and ’probesize’ to value 100M, yet didn’t work.

  Anything I’m doing wrong here ?