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wanderance
5th June 2002, 17:39
After poking around the forum and asking in multiple places, I am about to give up.

I am attempting to encode the X-Files Season DVD's. Everythig is fine, BUT when smooth pans or scene changes occur there is a slight stutter, and the audio never looses sync.

Here are the things I have eliminated, done.

It is coming from a dvd source, and being encoded with CCE to fit 4 episode on a DVD-R

I am using force film with DVD2AVI

I have used pulldown.exe

It is NOT the field order as I have tried adjusting it and doing test encodes and the same thing occurs.

My bitrate settings are 0-9800 (average depending on the lenght of the episode).

It isn't my dvd player, as it also does it with the mpeg file on different computer, does it with the authored dvd in my computer and on my dvd player.

I have heard it may be an issue with the way CCE deals with I frames, and GOP's.

Any help?

smoof
6th June 2002, 20:47
You need to provide more information before people can help...

Load up a vob in DVD2AVI and set Field Operation to none. I usually select VTS_x_2.vob since VTS_x_1.vob may have some intro stuff that might report different statistics than the main feature. Now preview the video (F5) and report back here what the video type and frame type are showing in the statistics window. Do this for 2 or three sections of the video just to make sure it's consistent. You can start the preview anywhere you want by sliding the cursor and pressing the "[" button to mark the start point and then hitting F5.

wanderance
6th June 2002, 22:35
Here are the results:

Video Type = FILM around 97 - 99 %, with NTSC just flickering in.

Frame Type = Progressive the entire way through.

smoof
7th June 2002, 19:08
OK, Here's the next thing to try...

Take the .d2v file you created with Force Film turned OFF and create an AviSynth script (movie.avs) like this:

LoadPlugin("c:\...\mpeg2dec.dll")
Mpeg2Source("c:\...\movie.d2v")

If you haven't used AviSynth, search the archives to get familiar with it. All the AviSynth stuff is available on the download page.

Take your movie.avs and load it into VirtualDub. Scroll the video until you find the scene where you see the stuttering. Use the right arrow key to single step through the frames. If you see 2 frames with interlacing followed by 3 frames with no interlacing then you need to perform inverse telecine using this movie_1.avs script:

LoadPlugin("c:\...\mpeg2dec.dll")
LoadPlugin("c:\...\decomb.dll")
Mpeg2Source("c:\...\movie.d2v")
Telecide(guide=1)
Decimate(cycle=5)
resampleaudio(44100)

Load movie_1.avs into CCE 2.50 (2.62 & 2.64 won't accept .avs files unless you use the Link2 utility). In CCE, specify progressive frames (since this is what avisynth will output).

If you didn't see any interlaced frames then read this thread: http://forum.doom9.org/showthread.php?s=&threadid=23470

Just work with the stuttering scene until you figure out what works.

Post your results back here