[mythtv-users] Lossless transcode for MPEG4 recordings?

[John Pilkington]

On 04/11/18 12:50, Richard Shaw wrote:
> Years ago I used to do lossless transcoding on all my ATSC recordings. 
> They took up less space when $/GB was higher...
> 
> Fast-forward to today. I have both ATSC and CC HDHR tuners and Plex on 
> all my TVs that don't connect directly to a FE.
> 
> Most things work OK but Plex has problems with the audio getting 
> massively out of sync on some channels. There are a few recordings I 
> saved and I used Avidemux to convert the container to MKV but left the 
> video and audio streams alone. These playback just fine in Plex.
> 
> So the questions are...
> 
> 1. Is there a lossless transcode equivalent in Mythtv?
> 2. Can I convert the recordings to MKV containers?
> 
> I found this thread but I'm not worried about cutpoints, just a fix to 
> the audio sync...
> 
> http://lists.mythtv.org/pipermail/mythtv-users/2017-June/391873.html
> 
> Per this:
> 
> https://www.mythtv.org/wiki/Lossless_Cut
> 
> It looks like the answer to #2 is yes, but it doesn't look like the code 
> has been touched since 2013...
> 
> Is there an "official" way to handle this within MythTV?
> 
> Thanks,
> Richard

Richard:  I posted a script called  mythTScut at the end of my wiki page 
for mythDVBcut.  It seemed to work quite well for me until my only tuner 
for HD channels became faulty.  It's for a desktop environment, and uses 
the MythTV DB for cutting but isn't otherwise Myth aware. I used it in a 
2-pass process for cutting but you might not need that. It isn't really 
what you asked for but might be worth a look.  I have no real idea if it 
would work on your material, or has had any satisfied users :-)

John