Strange Xvid 1.0 streaking problem

[Cyber Akuma]

This problem occurs in EVERY SINGLE VERSION of xvid 1.0 that I have tried, from some of the earliest alphas to RC3.

Although most Xvid1 videos play just fine, a small amount of avi files I encoded in a pre-xvid1.0 codec streak like crazy when being played back using the xvid 1.0 codec.

Anyone else suffering this? And can anyone tell me how to stop it from happening?

[plazz2000]

Can you post a picture of this "streaking"?

Sounds like it could be caused by interlaced content?

[Sharktooth]

Yep, post some pics.

[Cyber Akuma]

Ok, here they are

Now that I have looked through the vid, its kinda hard to describe....... its more like a streaking-bubbling over effect. It seems to effect the bottom 1/3rd of the video, but sometimes rises up to the bottom 1/2of the video, it dosent seem to reach the top half of the video too often.

http://www2.edu.sollentuna.se/~jotor_85/aku/bscap012.jpg
http://www2.edu.sollentuna.se/~jotor_85/aku/bscap013.jpg
http://www2.edu.sollentuna.se/~jotor_85/aku/bscap014.jpg
http://www2.edu.sollentuna.se/~jotor_85/aku/bscap015.jpg
http://www2.edu.sollentuna.se/~jotor_85/aku/bscap016.jpg
http://www2.edu.sollentuna.se/~jotor_85/aku/bscap017.jpg

[Sharktooth]

What Xvid version you used to encode them and what options (GMC, Q-pel,How many consecutive bframes)?

Edit: a fast workaround: use FFDSHOW, it should fix the problem.

[Tommy Carrot]

The same thing has happened here when i tried to playback old encodings where the resolution is not the multiple of 16. Your pics (and i'm assume your encoding too) are 480*360 -> here lies the problem.

[Sharktooth]

Originally posted by Tommy Carrot
The same thing has happened here when i tried to playback old encodings where the resolution is not the multiple of 16. Your pics (and i'm assume your encoding too) are 480*360 -> here lies the problem.
I was thinking of it but isnt the RC3 decoder able to play those files without problems?

[Pen-Pen]

you're sure you're not accidentally using DiVX 3.11 ? :D

[sysKin]

Originally posted by Sharktooth
I was thinking of it but isnt the RC3 decoder able to play those files without problems? Only if encoding is not old enough. If it's very old, it doesn't contain xvid version information, and decoder doesn't know it's xvid.

Radek

[BCI6]

Is there a way to mark these files? I have a bunch of avi's that I cannot re-encode & they don't play back any longer.
Thanks!

[celtic_druid]

I believe Syskin posted awhile back suggesting to append a few frames at the start, then edit the xvid bitstream flag from xvid00029 or whatever to xvid0001. Tried it once with an old non mod16 encode and it worked fine. Looked like your screenshots before the new header and then playedback fine afterwards. Interestingly enough, just like your example the vertical res was 360.

[Cyber Akuma]

I really dont want to re-encode these

[kilg0r3]

in order to do this you would not need to reencode.

BTW the sig of yours ...

[Cyber Akuma]

The problem is that I would still need to edit all my files that display this problem, I have distrobuted these small clips ot others, so it can cause problems if theres a new version of the file floating around.

Also this would mean I have to remove some frames from teh video.

And what about my sig?

[BCI6]

Not knowing much about XviD, but as a software engineer, is there any way to have XviD automatically detect these files?
For example:
If there is no version information or if the size is not mod16 then treat the encoding as xvid0001?
Or anything like this?
Thanks again.

[kilg0r3]

Originally posted by Cyber Akuma
And what about my sig? Well, it's large and clumsy, i.e., occupies more space than a short answer.

[bot]

Originally posted by celtic_druid
I believe Syskin posted awhile back suggesting to append a few frames at the start, then edit the xvid bitstream flag from xvid00029 or whatever to xvid0001. Tried it once with an old non mod16 encode and it worked fine. Looked like your screenshots before the new header and then playedback fine afterwards. Interestingly enough, just like your example the vertical res was 360.


Would it be possible to make a general batch file with nandub to help the bitstream challenged?

[Cyber Akuma]

Thats a good question, would there be any way for me to easily find out which files would have this problem other then viewing them all one by one?

[celtic_druid]

Well one would assume that anything else that you encoded around that time using non mod16 resolutions.

NanDub can't even output XviD though, plus there is the whole issue of hex editing and creating a source that matches your faulty video. Although I guess you could just re-encode the first part of your original video.

[Soulhunter]

Originally posted by Cyber Akuma
And what about my sig? Read kilg0r3's sign... ;)