[mythtv-users] MJPEG->MPEG-4 transcoder?

[Mark Kundinger]

--- "Brian J. Murrell" <brian at interlinx.bc.ca> wrote:

> I have set up a second backend with a Matrox G400 in it.  This is an
> MJPEG hardware encoder.  The files are huge though (5G an hour or so,
> which is about right for the MJPEG settings I configured for this
> profile), so I want to set up a transcoder for it.  There does not
> seem
> to be a default "From MJPEG" transcoder so I created a new one:
> 
> mysql> INSERT INTO recordingprofiles SET
> name="MJPEG",videocodec="MPEG-4",audiocodec="MP3",profilegroup=6;
> 
> When I go the transcoders menu I do see it and I can configure it
> just
> like any other transcoder, however when I try to transcode a file
> with:
> 
> # mythtranscode -i /video/tmp/1006_20051003230800_20051003233000.nuv
> 
> I get a transcode process that only seems to read the file (as
> witnessed
> with strace) and does no writing and when it is done it displays
> 
> Couldn't find stream paramters for '
> /video/tmp/1006_20051003230800_20051003233000.nuv'
> 
> This stream is perfectly watchable however, so it must be at least
> some
> part valid.
> 
> Ideas?
> 
> b.
> 
> -- 
> My other computer is your Microsoft Windows server.
> 
> Brian J. Murrell


This doesn't address your specific issue, but MythTV will normally use
the "From RtJPEG/MPEG4" transcoder settings for MJPEG transcoding.  So,
you don't need a new entry to make it work, you'd just need the new
entry if you want to transcode differently for MJPEG.