playing, seeking form a non closed mkv file

[Edward Hervey]

Hi,

On Wed, 2014-04-02 at 19:11 +0200, Peter BOCZ wrote:
> 
> Hi,
> 
> i  have a problem, let me introduce it form an example. I have a
> pipeline, which is recording video from a source to a file in matroska
> format. Meanwhile it is still recording the video i want to play back it
> from a different pipeline (maybe form another process), and it is
> working. But if I want to seek, play backward it is not working.
> Sometimes it's freezing, sometimes i get "gray" picture (decoded B frame
> whitout I frame). I know if i stop the recording as it have to (eos
> ....), and the file will be closed, everything is good, if I didn't stop
> the pipleline well, i have the same problems. As i see (know) the
> problem is that in an unclosed file the seek_indexes are not reachable.
> My idea is to rewrite matroskademux and every time we seek parse the
> reachable part of the file like in the matrokskamux, and build the
> seek_indexes to be able to seek as a closed one.
> Would you except such patch to gstreamer ?

  "rewrite" might be a bit too strong of a word :)

  Extending matroskademux to support progressively growing files would
be nice though. I think we already have this kind of support for some of
the demuxers (avidemux maybe ?).

  Don't hesitate to ask questions here or on the #gstreamer irc channel
on freenode.

  Patches should go on the gstreamer bug tracker.

    Edward

> 
> Best regards,
> Peter
> 
> 
> 
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