AVI Conversion Output Still Has Too Many Blocks

[Paulus]

In one of my recent avi conversion projects I had good results using the V4 script from optimal scripts thread but still sometimes there are still blocks visible. Is this normal or can it still be better ?

The .avi (Disney/Pixar animation) is of very good quality and is a little over 100 minutes long. I had a CQ of 62 and min/max bitrates at 400/2200. Audio at 112Kbps/dual channel. NTSC 480x480, Encoder=TMPGEnc 2.513.53.162. Other settings see below.

I was wondering to get the very best what is still possible (regarding script) ?

Will post screenshots if necessary.....

Just wondering

PS: by the way, my 2disc SVCD->1 discKVCD project is encoding as we speak. That's why I rather don't make screenshot right now.

Looking forward to hearing suggestions......





- Motion search prec.: Motion estimate search (fast)
- Field order: Yes
- DC component prec.: 8 bits
- Output YUV as YCbCr: No
- Floating point DCT: Yes
- No motion search: False
- Soften block noise: No
- iDCT Algorithm:
- NTSC Field Operation:
- Deinterlace: None
- Pulldown: Yes, TMPGEnc internal
- Width: 480
- Height: 480
- Matrix:
Intra:
8 16 19 22 26 27 29 34
16 19 22 26 27 29 34 37
19 22 26 27 29 34 37 38
22 26 27 31 36 37 38 40
26 27 29 36 39 38 40 48
27 29 34 37 38 40 48 58
29 34 37 38 40 48 58 69
34 37 38 40 48 58 69 79
Non-Intra:
16 18 20 22 24 26 28 30
18 20 22 24 26 28 30 32
20 22 24 26 28 30 32 34
22 24 26 30 32 32 34 36
24 26 28 32 34 34 36 38
26 28 30 32 34 36 38 40
28 30 32 34 36 38 42 42
30 32 34 36 38 40 42 44

AVISYNTH SCRIPT:
LoadPlugin("C:\PROGRA~1\DVD2SVCD\AVISYN~1.5PL\Mpeg 2dec\MPEG2D~1.DLL")
AVISource("C:\PROGRA~1\eMule\Incoming\FINDIN~1.AVI ",False)
ConvertToYUY2()
BlindPP(cpu=4)
Blockbuster(method="noise",detail_min=1,detail_max =3,variance=0.1,seed=1)
Convolution3D(1, 6, 12, 6, 8, 2.8, 0)
GripCrop(480, 480+0+0, overscan=1, source_anamorphic=false, dest_anamorphic=false)
GripSize(resizer="LanczosResize")
Undot()
TemporalSoften(2,7,7,3,2)
DCTFilter(1,1,1,1,1,1,0.5,0)
GripBorders()
function ConvertToYUY2(clip c){ return isYV12(c) ? c : convertToYV12(c) }
Textsub("D:\workdirectorymovie\subtitle.srt")


AUDIO INFO:
- Audiostreams: 1
- Audio 1 Language: Unspecified
- Audio 1 Bitrate: 112
- Audio 1 Sample freq: 44100
- Audio 1 Mode: Dual channel
- Audio 1 Besweet:


AUTHORING INFO:
- CD Image program: VCDXBuild
- Entrysvd: No

[Jellygoose]

I'd say that your CQ is just a little too low for SVCD resolution, and the blocks are due to bitrate shortage, when your Source is blockless.

If your player supports it use a lower minimum bitrate like 64 kbit/sec...
This will give more bitrate to the high action scenes. (I suppose those are the blocky scenes right?) Other than that use a little blur Filter like MergeChroma(blur(1.5)) to gain some CQ points without hurting the quality too much.

[Dialhot]

And I would say that your blocks are due to some underwater scenes very hard to encode.

I think I know your movie and lot of people have difficulty with it. Search in the forum

Note: use the second blockbuster line I recommand to use in difficult cases, it necessary for that movie.

[Paulus]

@Jellygoose

I use the min bitrate of 400 for compatibility reasons. Some players were not happy with the 300 I used before, but I think I will switch back to 300, because I doubt this min bitrate setting was the problem with my brothers Philips player

@Dialhot
I think you guessed right about the particular movie .

I have to say I am quite happy with the endresult (way worse versions out there of socalled "masterrippers") and yes, most blocks are during underwater scenes. As I seem to have deleted the original .avi I have no other choice but.......were should the second Blockbuster line be put in the script ? (for next projects could be useful). -> Ah, I see now (After the DCT filter right ?)

You also wrote that sometimes the second blockbuster line only makes things worse I believe (?).

[Dialhot]

Quote:

Originally Posted by Paulus

You also wrote that sometimes the second blockbuster line only makes things worse I believe (?).

When using blockbuster to add noise, you obtain a lower CQ, so the things can become very bad. That's surely what I wanted to say when I wrote such thing.

[TheDJ]

cant do anything about the blocks.....especially on black backgrounds!