Playback prob with OGM

[JimmyBarnes]

I just made my first DVD rip in OGM format (Evolution)

The movie is 98 min long. Encoded most of the video video (ex credits) with DivX Pro v5.0.2 with 2-pass (GMC, B-frames, normal PVE, 958 kbps, 512x272 neutral bicubic). Credits I did 1-pass at quant 12.
Used VDub v1.4.10 to append credits AVI to the main movie AVI.

Audio used OggMachine at ~80 kbps.

Muxed with OggMux to give the final OGM.

Playback on 68 cm TV was generally OK except...

At least 5 or 6 times during the movie, at widely dispersed intervals, there was a split second "jerk" within a frame - often barely preceptible (affecting only a small portion of the frame), but as one who has seen maybe 100 DivX 3/4/5 presentations (mostly on TV), it is something I have never seen before. With DivX the most common playaback glitch is a split second pause in playback - I found that rebooting the PC before playback usually avoids this.

My rig: Windows Me, WMP 6.4, Duron 800 MHz, 256 MB RAM, Asus VT-7100 32 MB AGP, SB Pro.

I have only one other OGM movie (dnlded) and this does not show this problem.

Many of the PGM features are appealing but I am reluctant to go further down the OGM path until I can get more info on this problem.

any help appreciated

JB

[Koepi]

As usual you should read up other threads first and use the search button - your problem could be dealt with in this thread:

http://forum.doom9.org/showthread.php?s=&threadid=23339

[JimmyBarnes]

Originally posted by Koepi
As usual you should read up other threads first and use the search button - your problem could be dealt with in this thread:

http://forum.doom9.org/showthread.php?s=&threadid=23339

Usually I do that because it gets me a quicker answer, and (oh yeah
:D ) doesn't load the forums unnecessarily.

But in this case I was too dumb to think of what to search for. The glitch could be what others in that thread are talking about but I'm inclined to think not - I don't get that nearly that degree of well defined corruption.

That movie was the first I tried Ogg Vorbis/OGM on, but it was also the first where I increased RC Averaging Period from the default 2000 frames to some 73000 frames or half the movie length as Gej suggests, and as others seem to use. Did a search on "rc* averaging" and came up with only 1 find - not partic relevant. Using such a large RC AP negates any averaging - could that cause the observed glitch?

At this stage I'm really not sure (maybe I should look at XviD).

JB

[kastro68]

However, I do not know if this is a divx5.02 issue or an ogm issue.

The last 2 encodes i did had that jerk you were talking about. At first I thought it was the chapter feature, so for the 2nd encode i did not use chapters, but the problem was still there.

It only started happening when i used 5.02 codec. I'm not sure if it is the encode or decode that is causing it.

I'll read the other thread now.

[raistlin2k]

@Jimmy Barnes

First thing I would do if I were you: Throw my PC away, it's carying the biggest virus called WinME:p
To be honest, I had this OS only for 4 weeks, it was the most unstable os I ever had. Moreover it has a lot of limitations being based on Win9x that disturb perfect DVD ripping and transcoding.
Use win2k or winxp, they are even faster for encoding on my TB1333.

Raist
P.S. I am not working at M$, I don't get paid for writing this, it's really my opinion that they did a good job on xp.

[JimmyBarnes]

Originally posted by kastro68
However, I do not know if this is a divx5.02 issue or an ogm issue.


I have only done one other rip with DivXPro 5.0.2 and that was OK
(was AVI/mp3).


The last 2 encodes i did had that jerk you were talking about. At first I thought it was the chapter feature, so for the 2nd encode i did not use chapters, but the problem was still there.

It only started happening when i used 5.02 codec. I'm not sure if it is the encode or decode that is causing it.

I'll read the other thread now.

That seems to talk about corruption in the image rather than jerky playback.

JB