[mythtv-users] Transcoding profiles

[Raymond Wagner]

On 5/19/2011 10:33, Bob wrote:
> I have been reading the many threads about transcoding with 6 channel
> audio.  I would like to transcode some h264 content with 5.1 from my
> HD-PVR.  In the profiles I only see "MP3" and "Uncompressed" as audio
> options.  Do most people choose "Uncompressed" when wanting to preserve
> the 6 channel audio?

Your content is already in h264.  It already is in the most efficient 
common codec available.  While hardware decoders are not going to be as 
efficient as something like x264, and you could arguably shave off 
20-30% with minimal quality loss, it will be at a huge cost in CPU power 
(and electricity).  You shouldn't bother transcoding that content unless 
you are either clipping commercials, or need it in a specific format for 
some device.  In either case, you really want to use an external 
utility, rather than MythTV's internal transcoder.