[mythtv-users] lossless_cut issue with UK HD recordings
John Pilkington
J.Pilk at tesco.net
Tue Mar 3 08:50:50 UTC 2015
On 02/03/15 23:21, Grzegorz Sikorski wrote:
> Thanks, I will give it a try. I have only Celeron J1800 machine, so I
> wanted to avoid transcoding, but if this is the only way, I will do it.
>
> On 2 Mar 2015 23:09, "Paul Gardiner" <lists at glidos.net
> <mailto:lists at glidos.net>> wrote:
>
> On 02/03/2015 22:36, Grzegorz Sikorski wrote:
>
> Hi,
>
> I have tried to use lossless_cut tool with my MythTV setup. This
> tool is
> great and it works perfect for all my SD channels recording.
> However I
> could not get proper output mkv video for any UK Freeview HD
> channels. I
> got properly cut movie, but with destroyed audio (it is not
> playable on
> any player, tried VLC, Totem and even Windows Media Player).
> Some movies
> have audio broken (VLC displays error message on audio path),
> some have
> just "silent" path. After some deep search I found this topic:
> https://tvheadend.org/boards/__5/topics/6808
> <https://tvheadend.org/boards/5/topics/6808>. It seems the audio
> cannot be
> properly played since UK broadcasters change audio codec during
> transmission (e. g. switching codecs between commercial brakes and
> actual movie). Could anybody confirm this is a related issue? If
> so, is
> there any known workaround?
>
>
>
> For UK Freeview HD, one way that works well is to use mythtranscode in
> fifo dir mode run into ffmpeg. Shame to decompress and recommpress
> again, I know, but the results are good. There's an example script
> here:
> http://www.mythtv.org/wiki/__Example_Script_using___mythtranscode_in_fifodir_mode
> <http://www.mythtv.org/wiki/Example_Script_using_mythtranscode_in_fifodir_mode>
> that can be set up as a user job.
Alternatively, you might try MythDVBcut, which does no transcoding. I
use it mostly for SD, with project-x and java, but for HD it just cuts
at video keyframes using a python script. I run it in a terminal window.
https://www.mythtv.org/wiki/MythDVBcut
More information about the mythtv-users
mailing list