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• FFMPEG segment records a minute worth of data but metadata shows 0.1s length video

  1er février 2018, par Soft Strategy

  I’m recording a stream from a Live555 restream of a rtsp camera. I record in chunks of one minute videos. This is the setup :

  RTSP Camera -> Live555 Server -> Recorder

  Without the Live555 restreamer server I always record the rtsp camera stream with ffmpeg with no issues. This is the command :

  ffmpeg -rtsp_transport tcp -y -i rtsp://IPcamera/url/to/video -c copy -f segment -segment_time 60 -reset_timestamps 1 -segment_atclocktime 1 -strftime 1 /video/%Y-%m-%d_%H-%M-%Stest.ts

  I record in a ts container to mitigate framerate inaccuracies.

  If I capture the proxy stream after few ours with no errors, something happens the stream starts to record files with the usual space on disk (around 5-10MB each) but when I check the metadata, the duration is 0.16 seconds. If you watch the video, it’s of course too fast but shows the clock hard coded in the image that runs through the whole minute, so the data is there.

  The command I use with the restream, just an input change.

  ffmpeg -rtsp_transport tcp -y -i rtsp://IPstreamServer/proxyStream-1 -c copy -f segment -segment_time 60 -reset_timestamps 1 -segment_atclocktime 1 -strftime 1 /video/%Y-%m-%d_%H-%M-%Stest.ts

  It’s like ffmpeg is messing up the metadata. With the tcp setting there are no packets lost.

  What could be the problem ?

  Recording on Debian 8.8, ffmpeg version 3.2.5-1 bpo8+1.

  EDIT : I’ve found that some guy had problem receiving metadata from the server, could it be the problem ? http://lists.live555.com/pipermail/live-devel/2013-May/017033.html

• avformat/Makefile : use individual dependencies for librtmp protocols

  12 février 2018, par James Almer

  avformat/Makefile : use individual dependencies for librtmp protocols
  Fixes compilation of libavformat when librtmp is enabled but all the
  
  relevant protocols are disabled.
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libavformat/Makefile

• FFMPEG zoompan only applies and shows 3 images out of the many

  26 mai 2018, par Sanjyot Shah

  I am trying to generate a video from images using FFMPEG 4.0 windows built on AWS windows instance using PHP.

  $command2="ffmpeg -r 1/5 -i https://<path>/$images%d.jpg -c:v libx264 -r 5  -t $total_video_time -y  ".trim($video_name)." -i http://<path>/$audio ";
  
  </path></path>

  The above generates the correct video output with all the input images (50 in this case) but without the zoompan effect on the images.

  Now I try to add the zoompan effect for the images using -

  $command2="ffmpeg -r 1/5 -i https://<path>/$images%d.jpg  -filter_complex zoompan=z='zoom+0.002':d=25*4:s=1280x800 -pix_fmt yuv420p  -c:v libx264 -r 5  -t $total_video_time -y  ".trim($video_name)." -i http://<path>/$audio ";
  
  </path></path>

  This will only pick up the first 3 images and apply the zoompan to the first two images or so.

  Can you please help me with this issue ? Any inputs, pointers are welcome too.