[mythtv-users] nuvexport without transcoding?

[Joseph A. Caputo]

Chris Petersen wrote:

>>After downloding nuvexport and playing with it a bit, my basic 
>>understanding is that it uses mythtranscode to decode the .nuv file, and 
>>then uses ffmpeg to re-encode the data in the new format.  Is this correct?
> 
> 
> yes
> 
> 
>>If so, has anyone looked into doing a .nuv->.avi conversion without 
>>re-encoding the data?  For example, if I'm recording .nuv files in mpeg4 
>>at 640x480, I don't really want to decode the data and then re-encode it 
>>to convert/export it as an .avi.  Shouldn't it be possible to just 
>>extract the mpeg4 data and reformat it as an .avi file (or whatever) 
>>without any additional encoding?
> 
> 
> You could, but that would require mencoder being able to understand
> myth's nuv format, which it hasn't in awhile.  Other than that, it
> should be pretty easy to just use the stream copying functions of
> mencoder.
> 
> -Chris


One of the problems with most of the format conversion efforts to date 
has been finding a way to preserve audio/video sync.  Even with the old 
mplayer patch things used to get out of sync pretty quick.  With the new 
mythtranscode raw output & nuvexport, I get a perfect DivX movie every time.

-JAC