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• after 10M ffmpeg stops saving video on nodejs

  12 mai 2016, par cauchy

  I have a nodejs server running using express (express 4). I want to save the video from a few IP cameras on a lab on request. Everything works, but if the video is too long it doesn’t get saved (the limit seems to be 11M).

  I tried using only the command line :

  ffmpeg -i rtsp://192.168.1.189:554/ch01_sub.264 -strict -2 -vcodec
  
  copy -vcodec copy test.mp4

  and this works. But I get into trouble as soon as I use node (note that this is in the node parser, no code in express. I get the same error when running the server) :

  var child_process = require('child_process');
  
  tmpProcess = child_process.spawn('ffmpeg',['-i','rtsp://192.168.1.189:554/ch01_sub.264','-strict','-2','-vcodec','copy','-vcodec','copy',"test.mp4"],{maxBuffer: 10000});

  this runs until test.mp4 is around 11M. tmpProcess is not killed, it keeps running. But after test.mp4 is of certain size I cannot play it back. I get an error saying that "This file contains no playable streams." (this is from Totem, but VLC doesn’t work either).

  Changing maxBuffer doesn’t help. I’m trying to understand what buffer am I overflooding but I cannot get much info from the manual on the api of node.

• movenc : Use packets in interleaving queues for the duration at the end of fragments

  20 avril 2016, par Martin Storsjö

  movenc : Use packets in interleaving queues for the duration at the end of fragments
  As long as caller only writes packets using av_interleaved_write_frame
  
  with no manual flushing, this should allow us to always have accurate
  
  durations at the end of fragments, since there should be at least
  
  one queued packet in each stream (except for the stream where the
  
  current packet is being written, but if the muxer itself does the
  
  cutting of fragments, it also has info about the next packet for that
  
  stream).
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/avformat.h
  • [DBH] libavformat/internal.h
  • [DBH] libavformat/movenc.c
  • [DBH] libavformat/movenc.h
  • [DBH] libavformat/mux.c
  • [DBH] libavformat/version.h

• avcodec/nvenc : include nvEncodeAPI v7 SDK header

  27 août 2016, par Timo Rothenpieler

  avcodec/nvenc : include nvEncodeAPI v7 SDK header
  As Nvidia has put the most recent Video Codec SDK behind a double
  
  registration wall, of which one needs manual approval of a lenghty
  
  application, bundling this header saves everyone trying to use NVENC
  
  from that headache.
  The header is still MIT licensed and thus fine to bundle with ffmpeg.
  Not bundling this header would get ffmpeg stuck at SDK v6, which is
  
  still freely available, holding back future development of the NVENC
  
  encoder.
  

  • [DH] compat/nvenc/nvEncodeAPI.h
  • [DH] configure
  • [DH] libavcodec/nvenc.h
  • [DH] tests/ref/fate/source