[mythtv-users] Share your transcode settings!

Raymond Wagner raymond at wagnerrp.com
Wed Jan 11 17:24:25 UTC 2012


On 1/11/2012 12:16, Jeremy Jones wrote:
>
>
>
>     I really like the results obtained by running mythtranscode, used in
>     fifodir mode into ffmpeg. You still get to cut adverts out, plus
>     you get full control of recompression. You can maintain interlace, or
>     deinterlace and double the frame rate. My script is linked to from
>     the mythtranscode wiki page: http://www.mythtv.org/wiki/Mythtranscode.
>     May not do exactly what you want, but should be easy to alter.
>
>
> Can you change from HD to SD and still keep the Mpeg-ts container?  Or 
> does it have to go into a nuv?

No and no.  FIFO mode in mythtranscode opens a pair of named pipes on 
the filesystem, and feeds the raw audio and video streams into them.  
These pipes use the standard 64KB POSIX buffering, so as you pull data 
from them, mythtranscode pushes more data into them, in FIFO ordering.  
The video is clipped, deinterlaced, cropped, and filtered however you 
have configured, but it is not encoded nor is it multiplexed into any 
form of container.  It is left up to you to do those things.
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