[mythtv-users] MPEG-TS transcoding

[Steve Smith]

On 29/03/2008, Scott Alfter <mythtv at salfter.dyndns.org> wrote:
> Mike Loewen wrote:
>  >     I recently added a HDHomeRun to my MythTV 0.21 setup.  It works fine,
>  > and will record (unencrypted) programs from my Comcast cable.  The problem
>  > I have is in trying to convert the resulting MPEG-TS files to a format
>  > suitable for burning to DVD (I use Ulead DVD Movie Factory 5).
>
>
> Try converting them to program streams.  MythTV's built-in transcoder will do
>  this losslessly (and will chop out commercials while it's at it, if the
>  recording has a cutlist associated with it).  The last time I needed to make a
>  DVD for someone, I did this, fed the result into mencoder to downrez it from
>  720p to something DVD-compatible, and burned the resulting file with DVDStyler:
>  an all-Linux toolchain.
>
>  You could also try HDTVtoMPEG2, which also converts TS to PS and runs under
>  both Windows and Wine.
>
>  Come to think of it, if you're trying to put any sort of HD video on DVD (in
>  the DVD-Video sense, which would allow playback in a DVD player), you will have
>  to reencode it.  Both 1080i and 720p need to be reduced in resolution to
>  720x480.  1080i is already at a suitable framerate, so you can either do
>  inverse 3:2 pulldown (for film) and encode at 24000/1001 fps or drop a field
>  and encode at 30000/1001 fps.  720p is usually broadcast at 60000/1001 fps, so
>  you need to throw out a frame.  With mencoder, the options "-fs 60000/1001
>  -ofps 30000/1001" will do that (the result is 30000/1001 fps progressive-scan).
>
>    _/_
>   / v \ Scott Alfter
>  (IIGS( http://alfter.us/            Top-posting!
>   \_^_/ rm -rf /bin/laden            >What's the most annoying thing on Usenet?
>
>
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Mytharchive?!?! With ProjectX as well it does a perfect job on SD at
least and there's no reason it won't do HD. ProjectX is specifically
for demuxing TS streams with no loss of sync.
Cheers
Steve