[mythtv] A prelude to transcoding MPEG2->MPEG2

Craig Rindy developstuff at qwest.net
Tue Dec 9 02:58:25 EST 2003


James L. Paul wrote:
> On Monday 08 December 2003 14:59, Derek Atkins wrote:
> 
>>>" James L. Paul" <james at mauibay.net> writes:
>>>
>>>>Can you point me to the source for the version of GOPchop you are using?
>>>
>>>http://outflux.net/unix/software/GOPchop/
> 
> 
> Thanks. I have major problems with that version 0.91 that is on that site. In 
> fact, sometimes I can't even get it to index a file output by my Freestyle 
> card. I don't have the indexing problems with 0.92pre3, but I do have broken 
> audio after the first cutpoint. I don't have time now to dig back into this 
> further but I'll check again when if I get a chance.
> 
> I also found that gop_fixup, which was written specifically to fix the broken 
> timestamps left by GOPchop, didn't seem to have any impact on my results. 
> Perhaps GOPchop has different results depending on the capture resolution? I 
> don't see why that would be so, but assuming we are both using the same 
> version I don't know why my results would be so different from yours.
> 
> Anyway, I consider you to be more fortunate that I, since I haven't gotten it 
> to work. ;) However, avidemux2 has been doing a great job and seems much more 
> feature-rich so I haven't been hurting lately. :)
> 
> 
>>>-derek
> 

I am using GOPchop 0.9.1 with one minor modification to avoid an endless loop because I'm using Gentoo's libmpeg2-0.3.2_pre20030625 ebuild and GOPchop 0.9.1 was written against mpeg2dec version 0.3.1.  All of my streams are 720x480 with a bitrate of 4 Mbps default or 8 Mbps for high quality.

--
Craig Rindy



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