[mythtv-users] mythtranscode crashes on a .ts HD file

John Pilkington johnpilk222 at gmail.com
Sun Jan 13 15:42:49 UTC 2019


On 13/01/2019 13:30, UB40D wrote:
> I would like to save the edited version of a recorded file (keeping the 
> original). The file is a full HD recording, saved as a .ts file.
> 
> I have in the past succeeded in using mythtranscode for this purpose but 
> the same command that worked then failed now. The main obvious 
> differences I see is that when it worked it was for an SD .mpg file, and 
> now when it doesn' t work it's an HD .ts file.
> 
> The command line I used for the SD mpg file, which worked, is
>   mythtranscode --chanid 8711 --starttime 20141231215500 --mpeg2 
> --honorcutlist  --outfile /mnt/st5ka1/transcoding/output.mpg
> 
> (well, it worked BUT it deleted the subtitles, which is a pain. Is there 
> a way of honouring the cutlist but keeping the subtitles? But that' s a 
> separate story.)
> 
> The command line I first used for the HD file (without even noticing 
> that the file was .ts) was
> mythtranscode --chanid 54147 --starttime 20190112035000 --mpeg2 
> --honorcutlist  --outfile output.mpg
> 
> and the log ended as follows, after hundreds and hundreds of lines of " 
> Warning: partial frame found":
> 
> 2019-01-13 13:26:05.697058 W  Warning: partial frame found!
> 2019-01-13 13:26:05.697092 W  Warning: partial frame found!
> 2019-01-13 13:26:05.697151 W  Warning: partial frame found!
> 2019-01-13 13:26:05.697225 W  Warning: partial frame found!
> 2019-01-13 13:26:05.697291 E  No more queue slots!
> 2019-01-13 13:26:05.708845 E  Transcoding 
> /mnt/st5ka1/mythtv/recordings/54147_20190112035000.ts failed
> 
> I then tried dropping the --mpeg2 flag and saving to a .ts, with this 
> command...
> 
> mythtranscode --chanid 54147 --starttime 20190112035000  --honorcutlist  
> --outfile output.ts
> 
> and what I got was
> [...]
> 2019-01-13 13:28:31.463995 I  Honoring the cutlist while transcoding
> 2019-01-13 13:28:31.464376 I  Cutlist        : 0-7833,15329-21978
> 2019-01-13 13:28:31.464379 I  Original Length: 21978 frames
> 2019-01-13 13:28:31.464382 I  New Length     : 7496 frames
> 2019-01-13 13:28:31.464888 N  Found video height of 1088.  This is 
> unusual and more than likely the video is actually 1080 so mythtranscode 
> will treat it as such.
> 2019-01-13 13:28:31.464902 N  Transcode: Looking for autodetect profile: 
> Autodetect from 1080i
> 2019-01-13 13:28:31.465021 E  Transcode: Couldn't find profile for : H.264
> 2019-01-13 13:28:31.465024 E  Transcoding aborted, no profile found.
> 2019-01-13 13:28:31.465797 E  Transcoding 
> /mnt/st5ka1/mythtv/recordings/54147_20190112035000.ts failed
> 2019-01-13 13:28:31.465810 I  Waiting for threads to exit.
> 2019-01-13 13:28:31.568747 I  MythCoreContext::ConnectCommandSocket(): 
> Connecting to backend server: 127.0.0.1:6543 <http://127.0.0.1:6543> 
> (try 1 of 1)
> 2019-01-13 13:28:31.569926 I  MythCoreContext::CheckProtoVersion(): 
> Using protocol version 91 BuzzOff
> 
> 
> I note the line that says "Couldn't find profile for H.264". If such a 
> thing is available, how do I install it? I am on ubuntu 18.04 LTS.
> 

https://lists.gt.net/mythtv/users/610295#610295

says:

*lossless* transcode is great for removing commercials,
whilst still keeping the broadcast quality.

However currently only works for mpeg2 content and not
the newer formats which HD tends to be broadcast in





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