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• avutil/channel_layout : add av_get_extended_channel_layout

  26 décembre 2016, par Marton Balint

  avutil/channel_layout : add av_get_extended_channel_layout
  Return a channel layout and the number of channels based on the specified name.
  This function is similar to av_get_channel_layout(), but can also parse unknown
  
  channel layout specifications.
  Unknown channel layout specifications are a decimal number and a capital ’C’
  
  suffix, in order to not break compatibility with the lowercase ’c’ suffix,
  
  which is used for a guessed channel layout with the specified number of
  
  channels.
  Signed-off-by : Marton Balint <cus@passwd.hu>
  

  • [DH] doc/APIchanges
  • [DH] doc/utils.texi
  • [DH] libavutil/channel_layout.c
  • [DH] libavutil/channel_layout.h
  • [DH] libavutil/version.h

• Reading videos with OpenCV(Java) on Linux

  7 novembre 2014, par Antonio Sesto

  I am writing a tool for video processing in Java. My main dev platform is OS X : on that platform everything works. On linux everything works but video decoding : when deployed onto Linux (Ubuntu 12.04.4), my tool is no longer able to decode the video files it processes on OS X.

  What I did on Linux was :

  • install ffmpeg, libav, libav-extras and the dev packages via the apt-get package management system. The codecs needed to decode the videos appears to be among the installed ones.
  • compile OpenCV from source. After running cmake, I see that OpenCV will be compiled with ffmpeg support.
  • I use the jar and the corresponding native library produced by the OpenCV compilation in my Java app.

  I have tried every solution I have found on-line, but no-one seems to work.

  I add that the video processing Java code runs (both on OS X and Linux) as a web app in a Jetty container.

  Cheers

• Save several .ts files in one container, while preserving direct http access

  16 mars 2017, par SebastianB

  For HLS-video-streaming I have several .ts files and a .m3u8 playlist-file on my ftp-server. The .m3u8 file links relative to these .ts files. Because I’m now implementing a more advanced data management on distributed servers and a hashed folder structure, it would be most convinient if these .ts files would stay at the same place in one kind of "container"(e.g. .mp4 ?).

  Is there a way to save several .ts files in another file structure which is then still accessible for the video player directly via http? E.g. http://example.com/container.mp4:video1.ts and the next .ts file like http://example.com/container.mp4:video2.ts ?

  Obviously this access should be possible without loading/unpacking the whole "container". Furthermore it would be even more convinient, if the .m3u8 file would be saved in this "container" as well.