Horrid pixelation in DivX player :( [Archive]

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=CrAzYG33K=

10th April 2006, 21:16

Teegedeck

10th April 2006, 21:30

Maybe a problem with your standalone. That bitrate isn't high.

You better simply use the original DVD then.

Maybe the folks at the 'hardware players' subforum can tell you more.

-->moved

SeeMoreDigital

10th April 2006, 23:30

A bit more detailed information about the file would be helpful.... Such as whether it contains: B-VOP's, packed bit-stream, GMC, Qpel etc

You can retrive this infomation using GSpot 2.52 Beta 1 (http://www.headbands.com/gspot/gspot252dl.html).

Cheers

BigDid

10th April 2006, 23:57

This XviD AVI plays fine in my PC but has horrid pixelation in my stand-alone DivX player.. Here's what Gspot has to say
4CC : xvid
x:y - 640x272 (2.35:1) [=40:17]
Bitrate - 1132 kb/s
FPS - 23.97
QF : 0.271 bits/pixel
Type : OpenDML AVI
IMRR : 1.00
I/L : 1 vid frame (42 ms), p=24 NG=18648 Split: Yes
Hi,

+1 for more infos on your file +and+ your SAP: brand/model/chipset; thank you.

Is this because of the high bitrate? Other XviDs encoded played fine.. I tried 'Fast Recompress' in VDM, but the audio went bad..
I guess VirtualDubMod holds the key...
Bitrate? don't think so (1200kbps is usually ok) as is 640 width.
Also if the chipset is not a MTK1389, custom matrixes could not play/play well; use MPEG4modifier to get matrixes infos: if H263 or greyed H263 ok; if else ... :(
http://forum.doom9.org/showthread.php?t=78050
MPEG4modifier can also unpack packedbitsreams :)

Did

=CrAzYG33K=

11th April 2006, 07:44

Thnx for the reply guyz! :goodpost:
Sorry for the less info guyz..
I originally posted this in the XviD forum.. hence, the lesser details abt. my standalone :p

So here's my G-Spot summary : (I downloaded the Beta too! Thanx SeeMoreDigital)

4CC : xvid
Video : MPG4
x:y - 640x272 (2.35:1) [=40:17]
Bitrate - 1132 kb/s
FPS - 23.97
QF : 0.271 bits/pixel
Type : OpenDML AVI
IMRR : 1.00
I/L : 1 vid frame (42 ms), p=24 NG=18648 Split: Yes
DivX Style "packed bitstream" AVI
OpenDML (AVI v2.0)
BVOP, NVOP
FAR - 2.353 (40:17)
PAR - 1.000
DAR - 2.353 (40:17)

Regarding my Standlone.. It's an LG ( So I think iyt's good ;) )
Really din't have issues with other XviDs..
Chipset: MediaTek MT1389FE

I hope this is enough info ...
Awaiting replies..

BigDid

11th April 2006, 21:36

Hi,

Let's try to sort things out.

1/ You have horrid pixelation on your standalone not on your PC?
- What's your PC player and what decoder is used?
- Does your (software) decoder have post-processing on?

2/ Your SAP has a 1389FE (welcome on board :) ) so should play fine custom matrixes but may have problems with packedbitstreams (stutters not pixellation): you can use Mpeg4modifier to unpack them if needed and/or change the 4CC.

3/ What's remaining? OpenDML or I/L interleave
If you want to fastrecompress (with VDM) the video only, just demux your audio before and mux it back after :)

This is all I can point out ATM, others 2cts welcome :)

Did

SeeMoreDigital

11th April 2006, 21:47

Sadly, from the information you've provided, I'm still not sure whether your encode contains B-VOP's, packed bit-stream, GMC, Qpel etc!

EDIT: Here is a list of the basic "file" information we'll require: -

MPEG-4 type - ie: XviD, DivX, etc
B-VOP - Yes or No
Packed Bit-stream (PBS) - Yes or No
GMC (S-VOP) - Yes or No
Qpel (Quarter Pixel) - Yes or No
Frame Size (Resolution) - Measured in pixels
Frames Rate (FPS) - ie: 25.000, 23.977, 29.970
Bit-rate (Kbps)

Here's a typical example of what GSpot looks like and where the information is stored: -

http://img63.imageshack.us/img63/4120/gspotinfo8ev.png

Cheers

=CrAzYG33K=

12th April 2006, 06:16

LOL- I thought I'd made it clear...

MPEG-4 type - XviD
B-VOP - Yes
Packed Bit-stream (PBS) - G-Spot says 'DivX Style "packed bitstream" AVI' (but when I open in MPEG4Modifier, it says 'Packed Bitstream : No' :confused: )
GMC (S-VOP) - No
Qpel (Quarter Pixel) - No
Frame Size (Resolution) - 640 x 272
Frames Rate (FPS) - 23.976
Bit-rate (Kbps) - 1131

FAR - 2.353 (40:17)
PAR - 1.000
DAR - 2.353 (40:17)
QF : 0.271 bits/pixel
Type : OpenDML AVI
IMRR : 1.00
I/L : 1 vid frame (42 ms), p=24 NG=18648 Split: Yes

Here it is, then in SeeMoreDigital's format :) .

@BigDid - Thanx for your suggestioons..
Let me try to answer all ya questions..
1. Pixelation only on the SAP not on my PC .. The Decoder in my PC is, I believe the standard XviD codec.
2. In MPEG4Modifier, says 'Packed Bitstream : No' , but in G-Spot, it says 'DivX Style "packed bitstream" AVI' ...
3. This, AFAIK, seems to be my only option, I'll try them and give feedbacki.. but I notice a video proccesed in VDM to have the 'dull' look.. I don't know why, but it just doesn't look like the original did.

EDIT: btw, here's MPEG4modifier's Video info:

Packed bitstream: No
QPel: No
GMC: No
Interlaced: No
Aspect ratio: Square pixels
Quant type: MPEG Custom

Custom intra matrix:
8 9 10 11 12 14 16 18
9 11 12 13 15 16 18 20
10 12 14 16 17 19 21 22
11 13 16 18 20 22 24 26
12 15 17 20 23 25 28 30
14 16 19 22 25 29 34 38
16 18 21 24 28 34 46 52
18 20 22 26 30 38 52 72

Custom inter matrix:
16 16 17 17 18 19 21 23
16 17 17 18 19 20 22 24
17 17 19 20 21 23 24 27
17 18 20 22 24 25 28 32
18 19 21 24 26 29 36 40
19 20 23 25 29 40 48 52
21 22 24 28 36 48 60 64
23 24 27 32 40 52 64 106

I-VOPs: 1294 (1.15%)
P-VOPs: 56872 (50.66%)
B-VOPs: 54086 (48.18%)
S-VOPs: 0 (0.00%)
N-VOPs: 1 (0.00%)

Max consecutive B-VOPs: 1

SeeMoreDigital

12th April 2006, 10:53

Hmmm!

By default, XviD is set-up to generate MPEG-4 video with 2B-VOP's, packed bit-stream (PBS) and H.263 quantization.

As far as I'm aware, stand-alone players fitted with MTK chipsets should be quite happy at playing MPEG-4 video with 1B-VOP, PBS and H.263 quantization because they are the core settings for "DivX Certification".

But as your encode has 1B-VOP, no PBS and custom MPEG quantization, either of the last two or both could be causing your player to bork!

Cheers

rdk

12th April 2006, 12:12

With this costom matrix i also have pixelation on my MTK baset player.
Custom intra matrix:
8 9 10 11 12 14 16 18
9 11 12 13 15 16 18 20
10 12 14 16 17 19 21 22
11 13 16 18 20 22 24 26
12 15 17 20 23 25 28 30
14 16 19 22 25 29 34 38
16 18 21 24 28 34 46 52
18 20 22 26 30 38 52 72

Custom inter matrix:
16 16 17 17 18 19 21 23
16 17 17 18 19 20 22 24
17 17 19 20 21 23 24 27
17 18 20 22 24 25 28 32
18 19 21 24 26 29 36 40
19 20 23 25 29 40 48 52
21 22 24 28 36 48 60 64
23 24 27 32 40 52 64 106

I think this is AutoGK sharp matrix

Sorry for bad English!

SeeMoreDigital

12th April 2006, 12:18

That might narrow it down a bit then!

=CrAzYG33K=

12th April 2006, 15:32

wow - yeah it does seem to be the same quantum matrix..
Auto GK then ??

BigDid

12th April 2006, 18:52

With this costom matrix i also have pixelation on my MTK baset player.... I think this is AutoGK sharp matrix...

Yes it is, refs are here (EQM V2 aka AGK Sharp matrix): http://forum.doom9.org/showthread.php?t=83125
AGK sharp matrix was never a problem on my old (1389DE) or new (1389FE) SAP. But to be sure you can reencode with the ESS option on, it will use MPEG or H263 matrixes.

Auto GK then ??
We're getting on wet floor here cause you are supposed to know what prog you use for encoding your DVD or other sources...

Anyhow AGK gives you (always when Bframes are on) the following BVops sequence: 1/1.50/1 for xvid encode.

Did

=CrAzYG33K=

12th April 2006, 20:03

We're getting on wet floor here cause you are supposed to know what prog you use for encoding your DVD or other sources...

LOL - I was asking him if he too used AutoGK! :)

EDIT: Now all this brings me to a newer question..
Is there a Mediatek emulator software avble ?? So that I can emulate it on my PC and see if the video comes out fine or not.. :p
OR
If such a thing like chipset emulators doesn't exist some ppl here can develop something o' that sort, I'm sure it's possible coz' there are PS2 and XboX emulators around..

BigDid

12th April 2006, 22:05

LOL - I was asking him if he too used AutoGK! :)
Glad to hear that.

EDIT: Now all this brings me to a newer question..
Is there a Mediatek emulator software avble ?? So that I can emulate it on my PC and see if the video comes out fine or not.. :p
Not that I know, maybe SMD has more infos?
But you can try the reverse solution (after having re-encoded with ESS Option) use the divx CD test to check what your SAP is capable of here:http://www.mpeg-playcenter.com/modules.php?name=Forums&file=viewtopic&t=4071
from the players buyers guide here: http://forum.doom9.org/showthread.php?t=98228

I have entered different LG models: 9913? DV8700H, DV9900, DVX8951, LDA530 in the divxcompare test and have the following results:
custom matrixes: all
QPEL: all
Bitrate max: 4500 for all
:confused:

Another approach would be, for you, to cut a small sample of you faulty avi (+- 10MB with VDM) upload it somewhere: http://forum.doom9.org/showthread.php?t=96362
So that some of us could try to reproduce your pixellation problem

Did