I use mythtv with a DVB-T tuner (Hauppauge Nova-T usb stick)<br>and the shows are recorded as .mpg (MPEG2 TS). In most cases<br>the shows come with subtitles / closed captions from teletext<br>which I can view during playback by pressing T.<br>
<br>If, after defining a cutlist, I transcode the file, I then<br>lose the captions, even if I ask for lossless transcoding by<br>setting the relevant checkbox in setup / setup / tv settings<br>/ recording profiles / transcoders / high quality / lossless<br>
transcoding.<br><br>When I invoke this job on a show, with left-arrow / job<br>options / begin transcoding / high quality, after the cutlist<br>is applied I find that the captions have disappeared from the<br>file.<br><br>
I notice by the way that the file, though it still ends in<br>.mpg, has been turned from an MPEG2 TS into an MPEG2 PS; so<br>there is some non-trivial processing going on and it isn't<br>just copying bytes from one file to the other except between<br>
the times marked in the cut list, which is what I'd like.<br><br>Is there a way to have a "really really lossless" setting,<br>i.e. pure mpeg2 copy without any recoding? I don't mind if it<br>only works at I-frame boundaries.<br>
<br>Alternatively, is there any way to force the existing<br>"lossless" transcoding to preserve the captions?<br><br>Thank you<br>