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• VPS as video relay server using ffmpeg and ffserver ?

  15 juillet 2016, par Luke E

  I’m working on a project where I need to send a video stream from a laptop through a router I don’t have control of to an Android phone on another network I don’t have control of. The project also involves sending a stream of sensor data the opposite direction, for which I’m using a VPS and TCP hole punching quite successfully.

  So, I thought to myself, why not just stream the video from ffmpeg on my laptop to ffmpeg on the VPS, and then relay that via ffserver to my android phone ? That’s what I’ve been trying to do for a good while now, but haven’t had much luck. The stream is recognized by the server but when putting it out over ffserver I get errors. Here is my ffserver.conf :

  HTTPPort 9000
  
  HTTPBindAddress 
  
  RTSPPort 5454
  
  RTSPBindAddress 
  
  
  
  <feed>
  
  File /tmp/feed1.ffm
  
  FileMaxSize 50M
  
  </feed>
  
  
  
  <stream>
  
  Feed feed1.ffm
  
  Format rtp
  
  VideoSize 960x540
  
  VideoBufferSize 0
  
  VideoFrameRate 30
  
  NoAudio
  
  AVOptionVideo flags +global_header
  
  </stream>

  And here’s the command I’m using to take the received stream on the VPS and transmit it to ffserver :

  ./ffmpeg -protocol_whitelist file,udp,rtp -i foo.sdp  -an -c copy -f rtp rtsp://:5454/feed1.ffm

  When doing this command, I get the error "rtsp ://:5454/feed1.ffm : Protocol not found"

  Any advice ?

  I also thought about doing this with netcat and just and trying to forward all data received on the VPS at a certain port 1234 to any client connected to say port 1235, but this appears to be much more difficult than I thought.

  Thanks again for any help, and hopefully this problem is interesting to others as well.

• How to build a daemon to encode video files on S3 ?

  4 avril 2013, par Yuval Cohen

  I am interested in running a daemon to go over user uploaded video files and encode them in an optimal format (and add some watermarks).

  I was considering services such as Zencoder, Encoding.com, Amazon's encoding service but some lack overlaying capabilities and some are just too expensive for our (big) volumes.

  I want to build a daemon that encodes videos that are located on S3 once users upload them.

  The solution I thought of would be Python Heroku servers using Celery for a task queue to keep track of the encoded files and ffmpeg to do the actual work. However, I ran into troubles compiling ffmpeg for Heroku (with libass support, so the basic ffmpeg bins aren't enough).

  What approach/technology stack would you consider for this mini-project ?

  Thanks !
  Yuval

• ffmpeg ffplay udp streaming quality and error [closed]

  1er janvier 2023, par SangEun Shin

  I am receiving udp streaming through ffmpeg ffplay, but there is a problem that the video is broken.
I'm using a Gopro Hero 11 camera, but I can't receive more than three camera streams because the streaming is fixed with the udp 8554 port.

  


  So using Raspberry pie 4 and nginx reverse proxy for each camera, multi camera streaming succesfully received on another raspberry pie.

  


  In conclusion, gopro camera udp streaming -> raspberrypi received. use nginx reverse proxy -> another raspberry pi received.

  


  However, there is an issue that streaming video quality is broken.
  
I used ffplay :
ffplay udp://@:23002

  


  and the following error also appears :

  


  [h264 @ 0x91cb4ed0] reference picture missing during reorderf=0/0   
[h264 @ 0x91cb4ed0] Missing reference picture, default is 65559
[h264 @ 0x91d234d0] reference picture missing during reorder
[h264 @ 0x91d234d0] Missing reference picture, default is 65559
[h264 @ 0x93028ba0] reference picture missing during reorderf=0/0   
[h264 @ 0x93028ba0] Missing reference picture, default is 65560
[h264 @ 0x9302d6d0] mmco: unref short failure 0KB sq=    0B f=0/0   
[h264 @ 0x9302d6d0] number of reference frames (0+3) exceeds max (2; probably corrupt input), discarding one
[mpegts @ 0x93000630] Packet corrupt (stream = 0, dts = 73156083)
[mpegts @ 0x93000630] Packet corrupt (stream = 0, dts = 73159086)
[mpegts @ 0x93000630] Packet corrupt (stream = 0, dts = 73165092)
[h264 @ 0x9302d6d0] reference picture missing during reorderf=0/0   
[h264 @ 0x9302d6d0] Missing reference picture, default is 65540
[h264 @ 0x930e08e0] reference picture missing during reorderf=0/0   
[h264 @ 0x930e08e0] Missing reference picture, default is 65541


  


  so i use ffplay option -fflag +discardcorrupt. and
use -vf "setpts=N/60/TB".

  


  conclusion : ffplay udp://@:23002 -fflag +discardcorrupt -vf "setpts=N/60/TB"

  


  img

  


  It's better than before, but is still breaks when the change in streaming video is large.

  


  and The packet corrupt still remains, I don't know how to set the pts value that fits the streaming video.

  


  Or is there an issue that I didn't find ?

  


  I'm looking for a way to match the pts.

  


  But I wonder if this is the right way.

  


  I'd appreciate your help to the lost.