Video stuttering in final DVD

[Micke Nygård]

Hi -

I read the messages on the same topic posted last year.

I encounter the same problem. My environment is:
- Topfield 5100 pvr masterpiece
- laptop with win xp
- DVR-Studio Pro 1.56 which I downloaded yesterday to evaluate

The result of the conversion renders a DVD which video picture stutters about 2-3 times each second whereas the audio is ok.

I burned the DVD with the lowest possible speed (2x) availabe to me.
The size of the movie is about 2.5GB.

Can you point me at what I should do about this to be able to create a smooth high-quality DVD record?

Best regards Micke

[Kimi]

@Micke:

first of all we have to find out if the problem ist recording related or DVD-media related.
- Please try a different recording from a totally different TV-channel.
- Use RW-Media to try.
- Also try to play the resulting VIDEO_TS directory directly on the PC (last page of the DVD-wizard)

[Micke Nygård]

OK -

I checked the original (movie A recorded from YLE in Finland) with VLC Media Player and it worked well. Then I selected another program (movie B recorded from TV4 of Finland) and passed it through DVR-S without burning it. I looked at the intermediate result with Windows Media Player and it looked ok. Next I continued with DVR-S and burned it and, again, it looked well both with WMP and on my off-line DVD device and my TV.



So all I did was pick another movie and change the burning to be a separate task. This doesn't sound as a good explanation to the original problem, does it? Hence I rerun the DVR-S for Movie B and let it flow all the way I'm amazed. The end result is OK.

Finally I took the original Movie A and made a complete rerun of it without changing any parametes whatsoever... and back to square one, the problem exists on the final DVD. I took a look at the interim "VTS_01_1" file for Movie A on my hard disk and that seems to be working (with a small dissync between speech and picture).



So the problem pins down to the burning stage. It works with one but not the other movie! What can cause this phenomena for one movie but not the other? Movie A is shorter than Movie B.

My environment is:
- Acer laptop with 750Mb of memory
- DVD: QSI DVD+-RW SDW-082
- DVD driver: Microsoft 5.1.2535.0 dated 7/1/2001
- The DVD media is a DVD-R 4.7GB from Gigatain

Any suggestions or instructions?

Micke Nygård

[Kimi]

@Micke:

to make sure the burning process is the problem: please switch to "Nero" burning interface on the 4th page of the DVD-Wizard. It is sufficient to install the demo version of Nero if you do not have it.

I don't believe it is a problem of the burning I assume it is a problem with YLE recordings for your DVD-player. Sat-recordings often use profiles not in the DVD-specification. This can be:
- non-DVD resolution (like 480x576)
- large GOP (Group of pictures).

The problem you describe sound like long GOP. DVD-streams have to include a full-encoded picture every 18 frames. But on satellite there can be up to 27 pictures until there is a full encoded frame. This is called a long GOP. Most DVD-Players do not have a problem with it, but some do.

Can you try the DVD on a totally different DVD-player?

[Micke Nygård]

Hi -

I installed Nero and retried with no success.

This time Nero does not co-operate with me. This is what the log-file tells me:

Quote:
DVR-Studio Pro 1.56
running on: Windows NT/2000/XP
Output Path: C:\Documents and Settings\Mikael Nygård\My Documents\Haenlein-Software\DVR-Studio Pro\Output
Authoring Demux Path: D:\DVD
Authoring VIDEO_TS Path: D:\DVD\VIDEO_TS
Log-Level is set to: 1
\ CDVRStudioApp::InitInstance

Licence Data:
Serial number: 1609367277
Client number: 0
Licence key:
\ CDVRStudioApp::CreateSubDirs
/
/
\ CDVRStudioDoc::OnOpenDocument
Opening File: G:\Video programs\Mies joka tiesi liikaa.rec
\ CDVRStudioDoc::PreAnalyze
\ CDVRStudioDoc::DetectByteOrder
/
Patching Aspect Ratio to 16:9
/
/
\ CWizDVDStart::OnInitDialog
/
0 No Menu
1 Title + Cover + Text
1 Title + Cover + Text 16;9
2 Titles + Cover
2 Titles + Cover + Text
2 Titles + Text
3 Titles + Cover + Text
3 Titles + Text
4 Titles + Cover + Text
4 Titles + Text
5 Titles + Text
6 Titles
7 Titles
8 Titles
9 Titles
\ CPlusFunctionMgr::FnDemultiplex
\ CDVRStudioApp::CreateSubDirs
/
\ CMpegTsDemux::Init
/
Demultiplexing recording to separate MPEG ES:
First Video PTS is 0:00:23,151
First Audio PTS is 0:00:23,280
Patching Aspect Ratio to 16:9
Found invalid audio frame @ PTS 0:35:53,352
Found invalid audio frame @ PTS 0:35:56,400
Found invalid audio frame @ PTS 0:35:56,424
Found invalid audio frame @ PTS 0:35:56,544
Found invalid audio frame @ PTS 0:35:56,568
Found invalid audio frame @ PTS 0:35:56,592
Found invalid audio frame @ PTS 0:35:56,616
Found invalid audio frame @ PTS 0:35:57,408
Found invalid audio frame @ PTS 0:35:57,432
Found invalid audio frame @ PTS 0:35:57,456
Found invalid audio frame @ PTS 0:35:57,480
Found invalid audio frame @ PTS 0:35:57,528
Found invalid audio frame @ PTS 0:35:57,528
Found invalid audio frame @ PTS 0:35:57,552
Found invalid audio frame @ PTS 0:35:58,248
Found invalid audio frame @ PTS 0:35:58,272
Found invalid audio frame @ PTS 0:35:58,320
Found invalid audio frame @ PTS 0:35:58,368
Found invalid audio frame @ PTS 0:35:58,392
MPG Audio PID: 0294, PTS: 0h35:30,472
Padded missing sound frame(s): 48ms!
MPG Audio PID: 0294, PTS: 0h35:33,376
Padded missing sound frame(s): 48ms!
MPG Audio PID: 0294, PTS: 0h35:33,568
Padded missing sound frame(s): 96ms!
MPG Audio PID: 0294, PTS: 0h35:34,432
Padded missing sound frame(s): 96ms!
MPG Audio PID: 0294, PTS: 0h35:34,504
Padded missing sound frame(s): 48ms!
MPG Audio PID: 0294, PTS: 0h35:35,224
Padded missing sound frame(s): 48ms!
MPG Audio PID: 0294, PTS: 0h35:35,344
Padded missing sound frame(s): 96ms!
Reached end of stream.

Synch Summary:
Skipped or missing Video Frames: 0ms
Skipped or missing Audio Frames: 1344ms
Runtime Summary:
Total video runtime: 1h54:33,960
Total audio runtime: 1h54:33,704
Done, 825s

/
\ CPlusFunctionMgr::FnRemultiplexAll
Demux Path: D:\DVD
VIDEO_TS Path: D:\DVD\VIDEO_TS
\ CPlusFunctionMgr::FnRemultiplex
\ CDVRStudioApp::CreateSubDirs
/

Video stream info:
Average bitrate: 2.557 MBit/s
Peak bitrate: 4.932 MBit/s

Multiplexing OK: no Buffer underflow
Multiplexing finished!
/
/
\ CPlusFunctionMgr::FnBurnAll
DVD-Video files reallocation failed
BurnCD() : burn failed
/
\ CPlusFunctionMgr::FnBurnAll
DVD-Video files reallocation failed
BurnCD() : burn failed
/
\ CPlusFunctionMgr::FnBurnAll
DVD-Video files reallocation failed
BurnCD() : burn failed
/
\ CPlusFunctionMgr::FnBurnAll
DVD-Video files reallocation failed
BurnCD() : burn failed
/

:Unquote

I made the writing interface "Nero" as suggested but it did not do the trick.
The installation of Nero was OK (once I managed to get all its 170+ MB's downloaded).

You are referring to satellite channels. This is not my case. I'm trying to create the DVD from a picture broadcasted by the national TV-operator of Finland which I captured over the digital antenna network with my Topfield TF5100 PVRt Masterpiece.

I would be surprised if the content would not be appropriate.

You refer to "non-DVD resolution" and "large GOP". How can I verify what the picture I'm working on is neither of them?

As to trying on a different DVD-player, I've been using the laptop and the stand-alone DVD player, both showing the same result. I don't think the problem is on that side.

On a sidenote: I can see that the subtitles are missing. I understand that YLE runs the subtitles as separate files or streams (as per some digital broadcasting standard) and not burned in the main stream. How can I include the subtitles?

I also note that the picture was made in the 1950's so the dimensions of it may be 4:3 and not 16:9 )or something else). Would this have an impact?

Best regards,
Micke

[Kimi]

It doesn't matter if the stream originates from DVB-T (terrestrial) or DVB-S (satellite). Die format is the same, so no problem here.

But I see in your log, that at about 35 minutes a lot of invalid audioframes have been detected in your recording. So that's no good anyway. But it should not have an impact at the beginning of the DVD.

If the Nero interface doesn't work I can't help it. That beast either works or not... In the locks I see "files rallocation failed". Have you switched on the "Panasonic" option in the menu editor? Switch it off please and leave "Jump Back" at "Yes".

What you can try is changing the bitrate patching in the "Settings" window (menu "view"). Set it to 2MBit or 3Mbit. Default is 6, the max. is 8. Maybe you can experiment with different settings.

But I very much suspect a problem with the burning interface. Maybe you can try on a different PC or use different DVD-media?

[Micke Nygård]

Hi -

I reduced the bitrate to 2MB and replaced Nero with the original I had (ASPI) and did a rerun of the process - and that changed the way the result behaves.

On my PC with Windows Media Player I see some stuttering but on my DVD player it runs smooth.

I assume that the reduction of the bitrate also resulted in poorer quality of the picture. I shall elaborate more on that later on.

- - - -

Do you have any estimates on when the separate subtitles will be supported?

Best regards
Micke

[Kimi]

I assume that the reduction of the bitrate also resulted in poorer quality of the picture. I shall elaborate more on that later on.

No, this only patches the headers of each frame and this way tells the DVD-player how large to create it's internal buffers. See the online-help for further details.

There is no effect on the picture quality.