DVDMaestro - Jerky Results

[DoblANy]

Hi All,

I have followed the Doom9.net tutorial as far as i can that relates to my requirements (i.e. i do not want subtitles or loads of menus, just yet)

My MPEG2 was creted by TMPGEnc 2.510 and it is perfect, I load the MP2 and m2v files into DVDMaestro and proceed to add a menu and chapter points. They all work great the only problem is the VOB's that are created are very jerky in playback???

What am i missing? Please help.

Thanks
DoblANy

[nickel]

I use Maestro all the time and haven't heard of this. One thing that strikes me, though, is that you're using MP2 files. When I try to import those to Maestro, it tells me that only AC3 or PCM is supported. So maybe part of your problem is related to the MP2 files? How are they encoded and how do you get those into Maestro (are they 48Khz?). If you can tell me that, I'll try it myself and see if I get jerky VOBs, too. Maybe then we'll be able to better understand the cause of the problem.

[DoblANy]

nickel,

It did come up the that error about only AC3 and PCM are suppoted. Although it did still let me import the audio file and the audio is perfect on playback. Yes my MP2 is 48Khz.

How would i change the MP2 to PCM or AC3? Do i need to change the way i use TMPGEnc? I extract the audio from the AVI with vdub then convert the audio and video to MPEG2.

I really appreciate you help with this as i have been struggling to make one working DVD for almost 6 weeks now.

Thanks
DoblANy

[SLK001]

You still haven't told us enough info to be able to help you. First off, it is 99.99% probability that DVDMaestro is NOT the problem. Jerky playback usually means a field order problem.

What is your source?
What is your framerate?
What were your encode settings?
What did you use to determine that your encodes were "perfect"?
What did you use to determine that the .VOBs were "jerky"?

And any other pieces of data that you may think that we will need to be able to help you.

[DoblANy]

SLK001,

What is your source?

AVI

What is your framerate?

23.976 NTSC 4:6

What were your encode settings?

Do not convert frame rate - keep aspect resolution - as described in the TMPGEnc guide

What did you use to determine that your encodes were "perfect"?

I watched the MPEG in Media Player and Real Player.

What did you use to determine that the .VOBs were "jerky"?

I played the VOBs in PowerDVD and then burnt them to
DVD with the new Nero and the results were the same as the VOBs played on the computer.


Cheers
Dan

P.S.

[robrosen]

Hi All,

I have followed the Doom9.net tutorial as far as i can that relates to my requirements (i.e. i do not want subtitles or loads of menus, just yet)

My MPEG2 was creted by TMPGEnc 2.510 and it is perfect, I load the MP2 and m2v files into DVDMaestro and proceed to add a menu and chapter points. They all work great the only problem is the VOB's that are created are very jerky in playback???

What am i missing? Please help.

Thanks
DoblANy

Use Besweet with the GUI to convert the MP2 files to AC3 files. Then import the AC3 files into DVD Maestro. I believe Besweet can be found in the tools download section of this site.

I've also found that edited MP2 files (with Goldwave) can cause problems with jerkiness when DVD Maestro combines them with M2V files into VOB's. Don't really know why it happens - but unedited files should not be a problem after conversion to AC3.

[cellmaniac]

I've also seen this jerkiness if I use an Mp2 audio file in Maestro. I usually see the jerkiness on my pc-dvdrom and only a negligible amount on APEX. For those files where I don't start out with a ripped ac3 file, such as .avi conversions, I just use DVDit PE and they work fine.

I will try the Besweet GUI to convert the Mp2 to ac3 because Maestro is so much faster.

[DoblANy]

I have converted the MP2 to AC3 with Besweet and will crank up DVD Maestro to see the results i get from that. I will update when finished.

Thanks
DoblANy

[cchitson11]

Heres one possible solution I believe you have a problem with interlacing. I had this happen alot with interlaced video. They play fine on computer but when you put it in a settop player they are jerky during motion scenes Try changing you field order when encoding. I am about 99.9% certain this is your problem.

[DoblANy]

cchitson11,

I have experianced this problem with some AVI's however the MPEG2 plays great after TMPGEnc so its not encoding.

Thanks for your help

Dob

[cchitson11]

The mpeg2 will play GREAT on the COMPUTER but on a set top dvd player is where th problem comes into play. I quess the computer is a more forgiving then the settop. I would try the Mp2 because its alot simplier then if that doesn't work try reencoding changing the field order and i bet one of the two will fix the problem.

[SLK001]

What, exactly, is your .MP2 file?
Where did you get your .AVI?
What does Bitrate Viewer say about the field order (I suspect a field order issue)?

[DoblANy]

SLK001,

The AVI off Kazaa, I have converted the MP2 to AC3 with Besweet and then i have re-ran Maestro with the AC3 file, its has improved the output greatly however at times the VOB's are still jerky. I have just ran the MPEG2 file in BV and the results are:
Num. of picture read: 168470
Stream type: MPEG-2 MP@ML CBR
Resolution: 720*480
Aspect ratio: 4:3 Generic
Framerate: 29.97
Nom. bitrate: 4499200 Bit/Sec
VBV buffer size: 112
Constrained param. flag: No
Chroma format: 4:2:0
DCT precision: 9
Pic. structure: Frame
Field topfirst: Yes
DCT type: Frame
Quantscale: Nonlinear
Scan type: ZigZag
Frame type: Progressive
Notes:


Average Bit rate 5314 - Peak 6078

I have never used the prog before and i have just used the freeware version that has limited functions.

SLK001 - what should i be lloking for in Biterate Viewer?

Thanks
Dob

[SLK001]

Look at FIELD TOPFIRST: Yes
This is the most common configuration, and is what most encoders default to. If you get this wrong, your video will appear jerky during high action sceens and during cammera panning.

Where does your video get jerky (what kind of sceens)?

[DoblANy]

SLK001,

The VOBs get jerky for no apparent reason, I am incline to think it may be powerDVD but as i have no other way of playing the VOB's then i can offer no comparrison. Is their another program i could use to play the VOBs (Media Player doesn't play them) then i could check if the VOBs are jefky in the same places for both programs.

The playback is generall very good however even very simple scenes that have no camera movement and little on screen action the VOBs are still jerky thats why i would like to try another VOB player if you can advise.

Reakky appricate your help SLK001

Cheers
Dob

[SLK001]

How did you apply the 2:3 pulldown? The flags could be messed up.

Run your problem .VOB into DVD2AVI, and use FORCE FILM over a small section where the problem occurs (use the sliders to set IN and OUT points). Then create an .AVS script of this video, then look at the result with VirtualDub. Let us know if the jerkiness is still there.

[DoblANy]

Then create an .AVS script of this video,

How do i save as AVS? I tried AVI but it didn't work.

Although i did play the vob in DVD2AVI and the playback is perfect no jerkyness, could it be my audio thats broken?

[DoblANy]

Hi,

I have tried another MPEG2 two file (different film) and this time the picture is perfect absolutly no problem, however (its never easy!!!) when the pitch increases the sound starts to crackle?!?!?! Any ideas anyone?

Thanks
Dob

P.S. tomorrow i will attempt to see if i can find any errors with my orignal ac3 file (from the first MPEG2 film) in ac3fix - should this show any errors that would cause the video to jerk?