[vdr] Sound and picture problems with ITV3

Joerg Riechardt J.Riechardt at gmx.de
Mon Mar 26 21:52:10 CEST 2012


Am 26.03.2012 19:00, schrieb brian:
> Hi,
> Running VDR 1.6 on a FF and Budget cards I have problems with recordings
> made
> from the channel ITV3.
> The video itself starts OK, but gets very jerky after a while.
> Restarting playback
> makes it better for a while. Sound gets more out of sync with the
> picture, its also
> better after restarting playback. I tried replaying on VDR 1.7 and the
> problem was the same.
>
> I tried demuxing the recording with ProjectX, this was the output:
>
>
> <<< session infos >>>
>
> Monday, March 26, 2012 4:32:41 PM CEST
> ProjectX 0.90.4.00 (30.03.2006)
>
> -> working with collection 0
>
> -> save normal log file
> -> write all video data
> -> write all other data
> -> patch c.d.flagged infos of pictures
> -> add sequence end code
> -> set resolution in SDE
> -> PVA: strictly specs. for audio streams
> -> VOB: determine diff. Cell timelines
> -> TS: ignore scrambled packets
> -> TS: enhanced search for open packets
> -> TS: join file segments (of Dreambox®)
> -> TS: generate PMT stream dependent
> -> get only enclosed PES/TS packets
> -> concatenate different recordings
> -> ensure 1st PES-packet start with video
> -> generate PCR/SCR from PTS
>
> -> write output files to: '/home/brian/VDR-debug'
>
> -> Input File 0:
> '/media/public/video/VDR/2012-03-24.23.56.50.50.rec/001.vdr' (1,953,444
> bytes)
> -> Filetype is PES (incl. MPEG Video)
> -> demux
> -> found PES-ID 0xE0 (MPEG Video) @ 0
> -> found PES-ID 0xC1 (MPEG Audio) @ 2048
> -> found PES-ID 0xC0 (MPEG Audio) @ 6537
> -> video basics: 704*576 @ 25fps @ 0.7031 (16:9) @ 15000000bps,
> vbvBuffer 112
> -> starting export of video data @ GOP# 0
> !> dropping useless B-Frames @ GOP# 0 / new Timecode 00:00:00.000
> -> actual written vframes: 145
> switch to file:
> /media/public/video/VDR/2012-03-24.23.56.50.50.rec/002.vdr
> (2,097,184,848 bytes) @ 1953444
> !> dropping GOP# 9 @ orig.PTS 08:50:48.464 (2866361773), errorcode: 24
> !> Pics exp/cnt 3/1, inGOP PTS diff. 0ms, new Timecode 00:00:05.800
> !> ID 0xC0 (sub 0x0) packet# 252, big PTS difference: this 2866437692,
> prev. 2866321052
> !> ID 0xC1 (sub 0x0) packet# 253, big PTS difference: this 2866450652,
> prev. 2866321052
> !> PTS difference of 108000 (00:00:01.200) to last exported GOP detected
> (broken_link corrected)
> !> dropping useless B-Frames @ GOP# 10 / new Timecode 00:00:05.800
> -> found PES-ID 0xBD (private stream 1) (SubID 0x20) @ 2554745
> -> found PES-ID 0xBD (private stream 1) @ 4396859
> GOP# 9947, new format in next leading sequenceheader detected:
> (01:45:12.760)
> -> video basics: 704*576 @ 25fps @ 0.6735 (4:3) @ 15000000bps, vbvBuffer 112
>
> -> Video: fr/ ct/ 1p/ cg/ og/ dg -> 174194/ 2/ 1/ 10896/ 0/ 1
> -> Video length: 174194 frames @ 01:56:07.760
> -> GOP summary: min. 6, max. 40 fields; contains interlaced frames
> -> avg. nom. bitrate 2067611bps (min/max: 261600/8854800)
> -> set first sequenceheader bitrate to 8854800bps
> ---> new File: /home/brian/VDR-debug/001.m2v
>
> --> MPEG Audio (0xC1)
> -> check CRC of AC-3 / MPEG-Audio L1,2
> -> delete CRC in MPEG-Audio Layer1,2
> -> add frames
> Audio PTS: first packet 08:50:42.107, last packet 10:46:51.851
> Video PTS: start 1.GOP 08:50:42.664, end last GOP 10:46:51.704
> -> adjusting audio at video-timeline
> -> src_audio: MPEG-1, Layer2, 48000Hz, stereo, 128kbps, noCRC @ 00:00:00.000
> !> 14 frame(s) (336ms) inserted @ 00:00:05.472
> audio frames: wri/pre/skip/ins/add 290323/0/0/14/0 @ 01:56:07.752 done...
> ---> new File: '/home/brian/VDR-debug/001.mp2'
>
> --> MPEG Audio (0xC0)
> -> check CRC of AC-3 / MPEG-Audio L1,2
> -> delete CRC in MPEG-Audio Layer1,2
> -> add frames
> Audio PTS: first packet 08:50:42.107, last packet 10:46:51.851
> Video PTS: start 1.GOP 08:50:42.664, end last GOP 10:46:51.704
> -> adjusting audio at video-timeline
> -> src_audio: MPEG-1, Layer2, 48000Hz, stereo, 192kbps, noCRC @ 00:00:00.000
> !> 16 frame(s) (384ms) inserted @ 00:00:05.424
> audio frames: wri/pre/skip/ins/add 290323/0/0/16/0 @ 01:56:07.752 done...
> ---> new File: '/home/brian/VDR-debug/001[1].mp2'
>
> --> Subpicture (SubID 0x20)
> -> selected DVB subpicture color model: (0) 4 colors ; fixed to page id:
>
> -> export format: sup
> -> temp. file: 001.sp (995605 bytes)
> Subpicture PTS: first packet 08:50:52.525, last packet 10:46:52.627
> Video PTS: start 1.GOP 08:50:42.664, end last GOP 10:46:51.704
> -> adjusting subpicture at video-timeline
> !> suppic unknown cmd: 144
>
> The last line is repeated 500 times, then I get:
>
> stopped...
>
> !> an error has occured.. (please inform the authors at
> 'forum.dvbtechnics.info')
> java.lang.NullPointerException
>
>
> Is there any way I can analyse this further? I dont see any errrors with
> femon on ITV3.

Hi, you could try checkts, and see if the recording has continuity errors.
http://projects.vdr-developer.org/git/vdr-checkts.git/tree/README
Joerg

>
> Cheers Brian
>
>
>
>
>
>
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