digital tuner captures going out of sync when authored

[scottb721]

I have a Compro DVB-T300 tuner card.
The recording is fine in it's original mpeg format but as soon as I author it to DVD the sync goes out. I've tried a few different authoring apps but all come up no good.
Where should I start when trying to resolve this ?
Thanks very much.

[guns1inger]

What format is the audio ?
Do you change the audio format before authoring ?
If so, how ?

[scottb721]

I didn't do any changes initially.
After the first attempt I got DVDlab to do an Audio Delay scan the muxed mpeg it said Video PTS was 500 and Audio was 292 leaving an audio delay of -208ms. It also said the audio was a MPA file

I then got lab to demux and create a new audio file with the -208ms delay.

Other than that there were no other changes.
Thanks

[The_Doman]

Before authoring you should first use Projectx to demux/sync the DVB recordings.

[scottb721]

Hey, it worked. The authored VOBs played fine. Thanks very much
I guess some parts of the mpg were a bit dodgy.
The ProjectX log had the following,

Sunday, October 9, 2005 10:16:58 PM EST

ProjectX 0.82.1 (31.03.2005)
<<< session infos >>>
-> working with collection 1
-> 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
-> write output files to: G:\Compro\
-> Input File 0: G:\Compro\CH007_0930_1948.mpg (1921777664 bytes)

-> File is MPEG-2 PS/SS (Video/Audio PES)

-> demux

-> found PES-ID 0xC0 (MPEG Audio) @ 2062

-> found PES-ID 0xE0 (MPEG Video) @ 4110

-> video basics: 720*576 @ 25fps @ 0.7031 (16:9) @ 15000000bps, vbvBuffer 70

-> starting export of video data @ GOP# 0

!> dropping useless B-Frames @ GOP# 0 / new Timecode 00:00:00.000

!> dropping GOP# 240 @ orig.PTS 00:01:55.620 (10405800)

-> Pics exp/cnt 6/4, inGOP PTS diff. 0ms, new Timecode 00:01:55.120

!> PTS difference of 48253 (00:00:00.536) to last exported GOP detected

!> dropping useless B-Frames @ GOP# 241 / new Timecode 00:01:55.120

!> dropping GOP# 1267 @ orig.PTS 00:10:08.636 (54777253)

-> Pics exp/cnt 12/10, inGOP PTS diff. 0ms, new Timecode 00:10:07.520

!> PTS difference of 85963 (00:00:00.955) to last exported GOP detected

!> dropping useless B-Frames @ GOP# 1268 / new Timecode 00:10:07.520

!> dropping GOP# 1331 @ orig.PTS 00:10:39.831 (57584816)

-> Pics exp/cnt 9/8, inGOP PTS diff. 0ms, new Timecode 00:10:37.680

!> PTS difference of 21933 (00:00:00.243) to last exported GOP detected

!> dropping useless B-Frames @ GOP# 1332 / new Timecode 00:10:37.680

!> PTS difference of 17665 (00:00:00.196) to last exported GOP detected

!> dropping useless B-Frames @ GOP# 1333 / new Timecode 00:10:38.080

!> dropping GOP# 1942 @ orig.PTS 00:15:33.071 (83976414)

-> Pics exp/cnt 3/1, inGOP PTS diff. 0ms, new Timecode 00:15:30.320

!> PTS difference of 42853 (00:00:00.476) to last exported GOP detected (broken_link corrected)

!> dropping useless B-Frames @ GOP# 1943 / new Timecode 00:15:30.320

!> dropping GOP# 4138 @ orig.PTS 00:33:07.147 (178843267)

-> Pics exp/cnt 12/11, inGOP PTS diff. 0ms, new Timecode 00:33:03.840

!> dropping GOP# 4145 @ orig.PTS 00:33:10.565 (179150887)

-> Pics exp/cnt 3/1, inGOP PTS diff. 0ms, new Timecode 00:33:06.720

!> PTS difference of 36846 (00:00:00.409) to last exported GOP detected (broken_link corrected)

!> dropping useless B-Frames @ GOP# 4146 / new Timecode 00:33:06.720
-> Video: fr/ ct/ 1p/ cg/ og/ dg -> 60682/ 7/ 2/ 5058/ 0/ 6
-> Video length: 60682 frames @ 00:40:27.280
-> GOP summary: min. 20, max. 24 fields; contains interlaced frames
-> avg. nom. bitrate 5999785bps (min/max: 5544000/6638800)
-> set first sequenceheader bitrate to 6638800bps
---> new File: G:\Compro\CH007_0930_1948.m2v
--> MPEG Audio (0xC0)
!> 4 PTSs discarded in stream
Audio PTS: first packet 00:00:00.220, last packet 00:40:31.540
Video PTS: start 1.GOP 00:00:00.500, end last GOP 00:40:31.614

-> adjusting audio at video-timeline

!> missing syncword @ 8077, @ 00:00:00.000

!> found syncword @ 8448

-> src_audio: MPEG-1, Layer2, 48000Hz, stereo, 256kbps, CRC @ 00:00:00.000

!> 2 frame(s) (48ms) inserted @ 00:10:37.776

!> 3 frame(s) (72ms) inserted @ 00:15:30.240

!> skipped sourceframe(s) @ 00:33:03.840

!> 6 frame(s) (144ms) inserted @ 00:33:06.552

audio frames: wri/pre/skip/ins/add 101135/0/1/11/0 @ 00:40:27.240 done...

---> new File: G:\Compro\CH007_0930_1948.mp2
summary of created media files:
.Video (m2v): 60682 Frames 00:40:27.280 'G:\Compro\CH007_0930_1948.m2v'
Audio 0 (mp2): 101135 Frames 00:40:27.240 0/1/11/0 'G:\Compro\CH007_0930_1948.mp2'
=> 1898066622 bytes written...