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• Revision fdc73955f0 : Silence int64 to int warning Change-Id : Ic97ddd5143425a7b63fac4e40d9740a10a0491

  3 mars 2014, par Paul Wilkins

  Changed Paths :
   Modify /vp9/vp9_cx_iface.c

  
  
  Silence int64 to int warning

  Change-Id : Ic97ddd5143425a7b63fac4e40d9740a10a0491ad

• avformat/matroskaenc : Fix edge case of writing Cues at the beginning

  28 décembre 2019, par Andreas Rheinhardt

  avformat/matroskaenc : Fix edge case of writing Cues at the beginning
  The Matroska muxer has the ability to write the Cues (the index) at the
  
  beginning of the file (in front of the Cluster) : The user inputs the
  
  amount of space that should be reserved at the beginning of the file and
  
  if this is sufficient, the Cues will be written there and the part of the
  
  reserved space not used up by the Cues will be filled with a "Void"
  
  element.
  There is just one problem with this : One can not fill a single byte this
  
  way, because said Void element is minimally two bytes long (one byte ID,
  
  one byte length field). Up until now, if one reserved one byte more than
  
  needed, one would run into an assert when writing the Void element.
  There are two solutions for this : Error out if it happens. Or adjust the
  
  length field of the Cues in order to ensure that the above situation
  
  can't happen (i.e. write the length on one byte more than necessary).
  
  The first solution is very unsatisfactory, as enough space has been
  
  reserved. Therefore this commit implements the second solution.
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavformat/matroskaenc.c

• [C++][Linux + ffmpeg + h264 + rtsp + client] and [Window + ffmpeg + play video real time + server]

  21 avril 2015, par QuestionGuy

  I have a problem with ffmpeg and I don’t know how to continue. I have 2 computers :

  Client :

  • Run Ubuntu 14.04
  • FFmpeg installed
  • Use c++ language
  • Features : use ffmpeg to encode h264 video data from webcam of client laptop, then real time streaming to server

  Server :

  • Running Windows 7
  • FFmpeg installed
  • Use c++ language (MFC)
  • Features : Get real time data from client and show it on screen.

  I’ve just connected client to server and they can chat text data together, and I don’t have any idea to make real time video work.

  And my questions are :

  1. [Client] How to get video from webcam on laptop (using ffmpeg code), save it to buffer (raw data), encode it and send to server ?

     I use ffmpeg to get video from wc but it save to file. I really don’t want it. Code is :

     ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0 output.mkv

  2. [Client] How to get raw data from client, decode it and play it ?

     I have an idea to play it by using directshow in MFC.