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• FFmpeg command : stream generated raw video over RTSP

  21 juillet 2022, par Jan Discart

  I'm looking into using FFmpeg for streaming an output generated by an application to another system in the same network. However, I find the list of commands a little daunting and hard to understand. So I hope I can ask your help in the matter.

  



  My current usecase :
I have a Unity application which has a separate output stream of video and using a plugin I'm able to save that output to a videofile. The command used is to save this to file is :

  



  ffmpeg -y -f rawvideo -vcodec rawvideo -pixel_format rgba -colorspace bt709 -video_size 1280x720 -framerate 30 -loglevel warning -i - -pix_fmt yuv444p -preset ultrafast -crf 0 test.mp4


  



  The output format and such are already correct, but I'd like to stream this output directly over a network now, preferably using RTSP. Using the command below, where I replaced the test.mp4 at the end with udp://127.0.0.1:23000 to test streaming over UDP, but this returns an IOException in Unity.

  



  Any help in guiding me in the right direction is greatly appreciated.
Thanks in advance !

  


• C++ ffmpeg real-time video transmisson

  27 janvier 2015, par Yonghao Zhao

  I am a student currently working on my final project. Our project is focusing on new type network coding research. Now my task is to do a real-time video transmission to test the network coding. I have learned something of ffmepg and opencv and have finished a c++ program which can divide the video into frames and send it frame by frame. However, by this way, the transmission data (the frames)size are quite much more than the original video file size. My prof advise me try to find the keyframe and inter frame diff of the video (mjpeg format), so that transmit the keyframe and interframe diff only instead of all the frames with large amount of redundancy, and therefore reduce the transmission data. I have no idea in how to do this in c++ and ffmpeg or opencv. Can any one give any advice ?
  For my old program, please refer to here. C++ Video streaming and transimisson

• Merge commit ’90f9a5830b5d332de7ebb1ab45589f1870cbd65d’

  24 mai 2013, par Michael Niedermayer

  Merge commit ’90f9a5830b5d332de7ebb1ab45589f1870cbd65d’
  * commit ’90f9a5830b5d332de7ebb1ab45589f1870cbd65d’ :
  
    w32pthreads : move from lavc to compat/
  Conflicts :
  
  	libavcodec/Makefile
  
  	libavcodec/pthread.c
  
  	libavcodec/vp8.h
  Merged-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] Makefile
  • [DH] compat/w32pthreads.h
  • [DH] libavcodec/Makefile
  • [DH] libavcodec/frame_thread_encoder.c
  • [DH] libavcodec/pthread.c
  • [DH] libavcodec/vp8.h
  • [DH] libavformat/network.c