help CCE bug

[jrdallas]

Can someone explain in detail the CCE bug?

What do i have to select in CCE (top field first or not) with the following source video:
1) 16:9 mpeg2 Pal video (bitrate viewer says original is top field first)
2) 4:3 mpeg2 Pal video (bitrate viewer says orginal is top field first)
3) Same as above, but bitrate viewer says original is lower field first)
4) DV pal avi as source, which is lower field first.


Many thanks for those helping me...

This bug is driving me crazy, sometimes it works when following bitrate viewer, but sometimes not (i have the impression it depends if you have 4:3 or 16:9 material),
i'm so crazy because of that bug i'm starting to think things like this...

[Boulder]

Do what Bitrate Viewer says or you'll end up with stuttering video. I don't think that AR is the problem with CCE as the only thing I've seen crash is the Avisynth frameserver..

[jrdallas]

If i always do what bitrate says, i sometimes also end up with stuttering video. I posted this altready in the minidvd forum, there some guys talked about CCE swapping the fields as bug.
Hence i would like to know what to do in cases i wrote above.

Many thanks...

[Boulder]

Maybe you could try encoding a tiny part (just to see if it stutters) of the clip with TMPGEnc to see what it does and then change the field order in CCE if it seems to be wrong.

I've done lots of SVCDs from DVDs and all of them had the upper field first and no stuttering:) Guess I've just been lucky enough...

[jrdallas]

Thanks for the suggestion, problem is, you have to burn to dvd and watch on your television to see if it stutters.
Is there a way too see if it stutters on you pc?

[Boulder]

You create DVDs? I guess it would be the same to do a small SVCD clip and burn it on a CDRW if your standalone player supports it. I usually do that if I want to test some settings before doing the whole movie/clip. Do two clips, one for upper field first and the other for bottom field first and see which one's better. I'm not sure if you can tell the difference on your PC, but you could try that too using the same method.

[Inwards]

Originally posted by jrdallas
If i always do what bitrate says, i sometimes also end up with stuttering video. I posted this altready in the minidvd forum, there some guys talked about CCE swapping the fields as bug.
Hence i would like to know what to do in cases i wrote above.

Many thanks...

There is no "bug" in CCESP when it comes to reversing field order. It's just that it handles it differently than you think.

In other encoders selecting a field order will result in the TFF flag being set to either true or false. This is the flag that Bitrate Viewer uses to evaluate the field order of the clip. However in CCESP it always sets the TFF bit to true. If you select Top Field First, CCESP shifts the fields around within the clip before encoding them. If you leave this setting unchecked then it still sets the TFF flag but it doesn't modify the stream. Unfortunately physically swapping the fields around doesn't always work that well and you can end up with stuttering video in places.

My solution is to always encode without the flag set and then test the m2v playback in PowerDVD or Cinemaster. If it's jerky then I run the clip through pulldown.exe and reverse the field order without re-encoding ("pulldown source.m2v target.m2v -nopulldown -tff even").

[jrdallas]

Many thanks, this was the answer i was looking for. I did guess something in that way after a lot of thinking :-(

What i didn't know, you can see it the final video stutters on your pc screen, i tought these screens were always progressive and you only see it on your televesion?

Again, many thanks for clearing out!

[Inwards]

Originally posted by jrdallas
Many thanks, this was the answer i was looking for. I did guess something in that way after a lot of thinking :-(

What i didn't know, you can see it the final video stutters on your pc screen, i tought these screens were always progressive and you only see it on your televesion?

Again, many thanks for clearing out!

Set your software player to play back in "force bob" mode. If you've gotten the field order wrong you'll definitely notice it.

[jrdallas]

Again, many thanks!

All my questions answered.

[bryanh]

Originally posted by Inwards


Set your software player to play back in "force bob" mode. If you've gotten the field order wrong you'll definitely notice it.

I loved this idea. Only problem is that it didn't work for me. In fact I tried both "force bob" and "force weave" and neither of them produced the effect that I get with I play on my standalone. Soooo I still have to burn a chapter to a CDRW, test it, and then determine if I need to change the "field order" (or run pulldown -tff even). Kinda a pia :(

Bryan