[mythtv-users] Lossless-cut Not Ubuntu

Doug Vaughan r.d.vaughan at rogers.com
Wed Nov 7 21:33:08 UTC 2012

> So am I then correct in assuming that if the original recording is 
> MPEG2 (all dtv streams in Australia are MPEG2) then after the lossless 
> cut it will remain encoded in MPEG-2 video and audio streams, just 
> that they will now be enclosed in an MKV container?
> If so, then cutting commercials and converting to h264 would be a two 
> step process. I believe my current script mythnuv2mkv uses 
> mythtranscode in the background to do the cutting before using 
> mencoder to transcode. By decoding and then re-encoding you can get 
> inter keyframe cuts, unfortunately the UI doesn't always display the 
> correct frame on the screen when doing a frame-by-frame step for tagging
Yes two steps would be required.

After I have reviewed the mkv file then I use handbrake to transcode to 
a h264 lower bit rate resulting in a smaller file for network access 
from MythVideo. I am sure that mencoder can also perform the "second 
step" very well.



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