[Live-devel] key frames (I-frames) in the recorded AVI file

[Dmitry Petrenko]

Re: [Live-devel] key frames (I-frames) in the recorded AVIHello Ross,

I have implemented some functionality related to AVI indecies in AVIFileSink class. It is yet pretty basic. But after all, it feets my needs for the video recording. If you (or somebody else) likes I can share the source code here.

Features:
- reuses some code from mpeg4ip (not the library itself, but *some code* to parse frames)
- supports AVI 1.0 index (advantage is the simplicity and compatibility with most AVI players, disadvantage is the support limited to files < 2Gb only)
- supports MP4V-ES streams

TODOs:
- implement AVI OpenDML index to support files > 2Gb
- add support for other stream types (e.g. H.264 and so on)

Kind regards,
Dmitriy Petrenko
  ----- Original Message ----- 
  From: Ross Finlayson 
  To: LIVE555 Streaming Media - development & use 
  Sent: Friday, December 10, 2010 9:54 AM
  Subject: Re: [Live-devel] key frames (I-frames) in the recorded AVI file


    I just was wondering if it's possible to calculate and write keyframe index information to the recorded AVI files using AVIFileSink? Implementation of this class has some hints (like setting AVIF_HASINDEX and AVIF_TRUSTCKTYPE flags in AVI header) but where is the the actual implementation?


  The file "liveMedia/AVIFileSink.cpp" contains our complete implementation of outputting to an AVI file.  It could undoubtedly be improved, however.


  As always, feel free to propose any specific improvements or bugfixes that you might have.
-- 

  Ross Finlayson
  Live Networks, Inc.
  http://www.live555.com/


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