[mythtv-users] Mythtranscode Lossless cut Changes

[John Pilkington]

On 12/11/14 05:55, Justin Alcorn wrote:
> I found --audiotrack but it doesn't seem to do anything - I tried
> --audiotrack 0 and --audiotrack 1 both ended up with 2 audiotracks, and
> they are swapped.
>
> --
> Justin B. Alcorn
> PGP Fingerprint A36D D691 C5B0 BE15 5A2A AF49 AA1C 372C
>
> On Tue, Nov 11, 2014 at 9:15 PM, Justin Alcorn <justin at jalcorn.net
> <mailto:justin at jalcorn.net>> wrote:
>
>     Mythtv 0.28pre on Ubuntu 14.04.1
>
>     I'm using a script to losslessly cut commercials out of my HRHomerun
>     recordings.  The command used is quite simple:
>
>     mythtranscode --honorcutlist -m -i ${INPUTFILE} -o ${WORKFILEBASE}.mpg
>
>     Everything else in the script is mythutil cutlist or mythcommflag,
>     or other things that don't change the file.  That's the only command
>     that changes the file.
>
>     When I record something off the local Fox affiliate, the default
>     track, and the only one available for the MythTV Plex plugin, is the
>     Audio Track for the visually impaired.  The first track has been
>     swapped with the second.
>
>     The original file looks like this to ffmpeg:
>
>     mythtv at gossamer:~$ ffmpeg -i
>     /var/lib/mythtv/recordings/3081_20141111010000.mpg.old  2>&1 | grep
>     Stream
>          Stream #0:0[0x31]: Video: mpeg2video (Main) ([2][0][0][0] /
>     0x0002), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr,
>     90k tbn, 119.88 tbc
>          Stream #0:1[0x34](eng): Audio: ac3 (AC-3 / 0x332D4341), 48000
>     Hz, stereo, fltp, 448 kb/s
>          Stream #0:2[0x35](spa): Audio: ac3 (AC-3 / 0x332D4341), 48000
>     Hz, stereo, fltp, 192 kb/s
>
>
>     mythtv at gossamer:~$ ffmpeg -i
>     /var/lib/mythtv/recordings/3081_20141111010000.mpg  2>&1 | grep Stream
>          Stream #0:0[0x1e0]: Video: mpeg2video (Main), yuv420p, 1280x720
>     [SAR 1:1 DAR 16:9], 59.94 fps, 59.94 tbr, 90k tbn, 119.88 tbc
>          Stream #0:1[0x81]: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
>          Stream #0:2[0x80]: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
>
>     That's a lot of changes, not just cutting out commercials.  I found
>     some 6 year old bug reports that said that the issue of
>     mythtranscode swapping teh audio tracks was solved in 0.21, but
>     either we've got a regression bug or something really weird is
>     happening to me.
>     --
>     Justin B. Alcorn
>     PGP Fingerprint A36D D691 C5B0 BE15 5A2A AF49 AA1C 372C

There are similar complaints about recent breakage at #12303.  Two of my 
attempts to help have vanished without trace, rejected as possible spam 
and apparently not recoverable,   I suspect bad stream choice there too, 
and was trying to steer the thread towards the user list...

John P