[mythtv] MPEG2->MPEG2 commercial cut code in CVS

Geoffrey Hausheer mythtv0368 at phracturedblue.com
Sun Jan 18 10:54:06 EST 2004


On Sun, 18 Jan 2004 16:38:46 +0100, "Torsten Schenkel" said:
> Am So, den 18.01.2004 schrieb Geoffrey Hausheer um 16:33:
> 
> > The above may also apply to playing with a PVR-350.  I'm not sure if the
> > streams are compatible enough to play through the 350's decoder.  I do
> > plan to add padding and otherwise make the streams more compliant, but I
> > may need to ditch libavformat as it really doesn't seem to be compatible
> > enough today.
> 
> Is libavformat the library that is used by mencoder with the -voc lavc
> option? If so, and from what I know it is, the resulting files play fine
> with the pvr350's decoder.
> 
No, that is libavcodec.  libavcodec does the actual encoding, and as far
as I know, it does a good job.  libavformat controls muxing (and
demuxing) the audio and video streams, and the mpeg2 muxing support is
pretty bad (the demuxer is quite good from my experience though).  So
either (a) the ffmpeg team will improve libavformat enough that it
creates good streams, or (b) I find another way to mux the streams
together.

Since no data should be lost during remuxing (assuming the PTS values are
ok), it should be possible to fix any streams that the transcoder
currently breaks in the future.  But no gaurnatees.

BTW: I seem to have had my old email address disabled for excessive
bounces.  I have no idea what or why messages would be bouncing from
there, but I took it as a good excuse to swicth to a new remailer.  Could
the admin (Isaac?) tell me what the issue was (I heard sneakemail got
stuck on SPEWS for some idiotic reason, and maybe it's related)

.Geoff


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