[mythtv-users] Any way to increase speed of encoding ? (involves mythtranscode and may be mencoder)

[Lane Schwartz]

On Tue, 30 Nov 2004 09:47:40 -0000, VJ <vj at vijaygill.homelinux.net> wrote:
> Hi
>     I use my own scripts encode recorded programs using mythtranscode +
> mencoder. I have seen that mencoder encodes mpeg2 files at about 26FPS if
> the source is fifo's created by mythtranscode, and the speed increases to
> 45FPS+ if mencoder is working on the file directly. So I assume that either
> mythtranscode is not spewing out data as fast as mencoder compresses it OR
> mencoder is efficient to work with fifo's. Or could it be colour-space
> related thing? According to my limited knowledge, colourspace conversions
> also take a lot of time and MAY be mencoder first does that to the data read
> from fifo's and then encodes the frames.
> 
> Can anybody shed some light on this? And also any suggestions are welcome.
> 
> I am using FC3 with MythTV and IVTV driver compiled by myself only. I do not
> have nuvexport kind of utilities and I am unwilling to install those unless
> direly necessary (my last resort will be to use mpeg2mpeg cutting facility
> of nuvexport to get an mpeg2 file what I will use with mencoder to encode).

Are you starting with MPEG2 files?

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