[mythtv-users] nuv->avi possibilities?

[Cory Papenfuss]

 	Aside from glitches in the audio stream from the PVR-250, I haven't had 
any troubles with sync using avidemux.  Maybe try reencoding the audio along 
with the video and crunch it to MPEG4 (Xvid, H.263, DivX... pick your flavor). 
If you don't mind playing it on the computer, MPEG4 is the way to go... much 
smaller.

 	IIRC, there is absolutely NO extra data in mythtv's .nuv files recorded 
from ivtv than what was spewed from the card in the first place.  It's just a 
legacy issue from mythtv recording NUV from bttv-based cards.  How much stuff 
would break if this was changed to be more clear?  It'd be nice to identify by 
the filename what type of video it is, e.g:

*.rtjpg		<- rtjpeg bttv
*.mpeg4		<- mpeg4 bttv or post-transcoded 
*.mpeg2		<- ivtv recorded MPEG2
*.mpeg2ts	<- pcHDTV streams

Thoughts?  Perhaps at least a consistent convention like .mythvid or something? 
This is linux, after all, so we shouldn't have to keep the .tle
(three-letter-extension)... :)

-Cory


*************************************************************************
* Cory Papenfuss							*
* Electrical Engineering Ph.D. Graduate Student                         *
* Virginia Polytechnic Institute and State University 			*
*************************************************************************


On Wed, 18 Aug 2004, John Gruenenfelder wrote:

> After reading the recent nuv->avi with avidemux2 thread, I am still unclear as
> to what my best option for repacking my NUV files is.
>
> I now have quite a few Myth NUV files.  They were MPEG2 from a PVR-250, then I
> used Myth to cut commercials and transcode to MPEG4 (Xvid, right?).  Using
> avidemux2, I can easily see the off-sync problem that others were reporting.
> Because of this, I can't really use it.
>
> What are my options for translating my NUV files?  I am only interested in
> storing them on a data DVD for playback on a computer, so I don't need to do
> DVD authoring.
>
> I could just store the NUV, but that would require the playback platform
> (whatever that might be) to support Myth's NUV format, so I'd rather not go
> that route.
>
> Since all I need is a simple (?) translation, are there any other programs
> which can do this?  Myth certainly has no problems keeping the NUVs in sync
> during playback.
>
>
> --
> --John Gruenenfelder    Research Assistant, Steward Observatory, U of Arizona
>                        johng at as.arizona.edu
> Try Weasel Reader for PalmOS  --  http://gutenpalm.sf.net
> "This is the most fun I've had without being drenched in the blood
> of my enemies!"
>        --Sam of Sam & Max
>