[vdr] Weird frame rate issue (VDR 1.6 recording, VDR 1.7 playback)

Klaus Schmidinger Klaus.Schmidinger at tvdr.de
Tue Jan 24 10:40:44 CET 2012


On 24.01.2012 01:18, Tobi wrote:
> Hi!
>
> Several recordings recorded from JSC Sports (S13.0E-318-500-8440) seem to

This channel is encrypted, so I can't run any test on it.
Is there an FTA channel that shows the same behavior?

> have a weird framerate. The recordings were done in PES format with VDR
> 1.6, so there's no framerate setting in the info file and VDR will use 25
> fps by default. This leads to a wrong recording length display (30 minutes
> for a recording that was actually 20 minutes long). VDR 1.7.22 is used for
> playback and with a small patch I can provide the framerate via the
> info.vdr (Which might be a useful feature anyways, patch attached.).
>
> So far so good, but the recording seems to have a weird framerate
>
> This is the recording:
>
> 501593483 2012-01-20 13:15:00.000000000 +0100 001.vdr
>     366032 2012-01-20 13:15:00.000000000 +0100 index.vdr
>        149 2012-01-20 12:55:05.000000000 +0100 info.vdr
>
> The mtime diff between info.vdr and 001.vdr is 19:55 minutes. index.vdr is
> 366032 bytes in size, which divided by 8 gives a framerate of 38,29 fps.
>
> Can anyone explain this framerate?
>
> ffmpeg and mediainfo both say 25fps (see below) and VLC tells me it's 50fps.
>
> When I convert the recording to TS using project-x, set the framerate in
> the info.vdr to 25 and reindex it with VDR 1.7.22, it still shows the
> wrong length.

Does this also happen if you make a recording directly with VDR 1.7.22?

Klaus

> ffmpeg says:
>
> Input #0, mpeg, from '001.vdr':
>    Duration: 00:19:55.77, start: 59497.383833, bitrate: 3355 kb/s
>      Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x576 [PAR
> 64:45 DAR 16:9], 3049 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
>
> and mediainfo says:
>
> Complete name                            : 001.vdr
> Format                                   : MPEG-PS
> Duration                                 : 19mn 55s
>
> Video
> Format                                   : MPEG Video
> Format version                           : Version 2
> Duration                                 : 19mn 55s
> Width                                    : 720 pixels
> Height                                   : 576 pixels
> Display aspect ratio                     : 16:9
> Frame rate                               : 25.000 fps
> Standard                                 : PAL



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