Codec error??? - Koepi's 05042002 build

[elgan123]

Hi everyone,

First of all a big thanks to Koepi, Nic et al for all the work on this codec. Overall I have been very happy with the results. :)

On the topic of 'reds and greens' I have encountered a 'codec error' or bug at a scene change. Basically, half the screen filled up with big, green and red blocks at a keyframe and this lasted until the next scene change where a keyframe cleared it up. :confused: Please see attached zip file for screen shots.

I went through the entire movie keyframe by keyframe and this only happened once (and the movie was 'Heat' so a LOT of keyframes ;) )

I'm using Koepi's build from 05042002. I'm not an expert encoder so I used the default settings and I used Gknot to scale the curve before encoding pass 2.

Great work...hope this helps clear up a bug!

--
elgan123


EDIT: I tried to attach a file but it doesn't appear. Can a moderator enable it please?

[-h]

On the topic of 'reds and greens' I have encountered a 'codec error' or bug at a scene change. Basically, half the screen filled up with big, green and red blocks at a keyframe and this lasted until the next scene change where a keyframe cleared it up. :confused: Please see attached zip file for screen shots.

Very interesting. I hate to ask this of you, but could you try performing the 2nd pass again, with exactly the same setup? It is possible that this was an instance of your computer having a "hiccup" due to a faulty signal being sent over the bus - I remember Frank Klemm found that by leaving his computer running flac or monkey for days on end, he'd get 4 or 5 bits written out that were just plain wrong.

I'm only saying that because I can't for the life of me think of what else could be doing it :)

-h

[elgan123]

@-h

I encoded that scene again and the problem cleared up.

My procedure wasn't 'exactly' the same as the first time though. For the second time I only took that small part out of the .vob and encoded it (but I used the same settings).

I'm trying to think what could have caused a hiccup like you were talking about and I can't come up with anything. When I encode I sometimes watch divx movies but I don't do any disk intensive operations. I have a lot of RAM so I don't do much swapping.

If it happens again I'll let you know.

elgan123

[LigH]

Just something about "hickups": Me, stupid boy... was complaining about DVD rippers not detecting read errors; reading a DVD with SmartRipper in auto (WinIO) mode at 5-6x speed gave me much more CRC errors in AC3 files and "shit frames" in the video than reading in ASPI mode at only up to 1.5x speed. I thought that ripping from the DVD was the faulty part...

But then I discovered that after multiplexing audio into the video-only AVI, more shit-frames appeared. The same with processing huge waves: Reading and writing several times introduced strange clicks.

A week ago I split my mirrored RAID back into independent disks. And wonder what: No errors anymore.

Hardware: ABIT KT7 with HighPoint HPT370 ATA100 RAID; 2x 60 GB Maxtor harddisks -- the possible reason: one is ATA100 capable, the other is only ATA66. Unfortunately, I detected that quite a long time after I bought them.