[FFmpeg-user] VDR recording - dvd subtitle track not decoded

Henk D. Schoneveld belcampo at zonnet.nl
Mon Sep 14 00:02:44 CEST 2015

On 13 Sep 2015, at 23:18, Henk D. Schoneveld <belcampo at zonnet.nl> wrote:

> On 13 Sep 2015, at 22:48, Richard F <lists at keynet-technology.com> wrote:
>> On 13/09/2015 21:31, Carl Eugen Hoyos wrote:
>>> Richard F <lists <at> keynet-technology.com> writes:
>>>> I'm thinking some of the issue might be around the 
>>>> lack of timing, the projectX log I put up shows subs 
>>>> starting at 00:48:48.562
>>> So are subtitles shown if you record for >50 minutes?
> Strange thing I see is, the log of your ProjectX show it’s DVB subtitle
> My version of ProjectX doesn’t show any subtitle at all 
> Ffmpeg shows it as DVD subtitle
> VLC Media Information also says DVD subtitle. 
> Somehow it looks like it’s not the original VDR file, although byte size matches with your logfiles.
With ProjectX you can remux to a ts file. If all goes well, a valid ts as the originals from recording from satellite/cable, it should work with ffmpeg. I do the same with files from TV5, although not via the VDR route but directly from satellite.
>> No.
>> Another test I did on a 30 minute recording (extracted 427 subs), the
>> following was logged
>> -> temp. file: 001.sp (1903586 bytes)
>> -> Subpicture PTS: first packet 04:25:56.729, last packet 04:57:02.643
>> -> adjusting subpicture at its own timeline
>> -> source is DVB Subtitle...
>> 427 subpictures written...
>> I'm no expert on the in-and-outs of "PTS" timestamps, but the numbers
>> don't seem to be consistent across recordings.
>> Broadcaster / channel / dependent?
>> As you can see projectX moved them to a nominal position, sadly that
>> doesn't quite line up with the content, doubtless more to it.
>>> Carl Eugen
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