Shitty subtitles

[Pen-Pen]

Two questions about nandub :

1. What's the difference between AntiShit =) and Min. Quality ? This is not very clear in the SBC guide

2. To remove DivX 3 shit from my ssa subtitles, which of the two setting is really relevant ? Are they both ?

Thx ;)

[Pen-Pen]

nobody's got an answer ? or is my question that stupid ? ;)

[MasterYoshidino]

1. What's the difference between AntiShit =) and Min. Quality ? This is not very clear in the SBC guide

Antishit is to prevent freeze frames (dropped frames)
Min Quality is the minimun that a frame encoded should look compared to the original source. Higher values introduce higher bitrates.

2. To remove DivX 3 shit from my ssa subtitles, which of the two setting is really relevant ? Are they both ?

Ummm... Subtitles can look bad at lower resolutions. Try to stick with hi res values like 640x480 to increase subs quality. Also have the Internal SCD at 100% and use a true type font.

[esby]

Both parameters for antishit settings act the same way:
To prevent too much alteration between an encoded frame and the original frame.

First parameter checks the noise level and try to reencode to an upper drf ( if drf was 2 use drf 3) till the threshold pass...

Second parameter act the same, but will try to trigger a keyframe
if the level of noise is too high...

To speak seriously:
In theory antishit is a good idea...
but...
* It is not working efficiently,
meaning luma blocks & pixel flips (shit on subs) are not catched all the time...
and you'll end with a shity frame even with error prevention enabled...
* It is bugged somewhere, you'll end with drf =16 or drf=32 on some static scene, which look like sh!t... ( like a mosaic image).
* it is slowing down the encoding rate... Cause you are reencoding the frame each time one treshold is reached...

It is true that antishit prevents dropped frame, but it is not its primary goal...

Now, for your subs problem:
Zero Using high resolution will have better looking subs, but not necessary no error in subs...
First use textsub. and not vdub subtitler plugin.
Second, avoid white or yellow arial... :)
Third, two cases:
* you have the time to check your encode:
-check all the subs for presence of pixel flip, ( Luma error in subs)
if there is one, mark down the frame number, and try reencoding the passage containing it using an upper drf, because it's caused in 99% of the case by a divx encoder bug at low drf (2-3 sometimes 4)
-try to increase the drf by 1 and check untill the pf dissapears.
for that use the ecf file,
@framenumber CL=XX # where XX is the drf you want to use.
You might try to force a kf too ( @framenumber K,CL=XX )

* you dont have any time, in this case you might use drf=4-4 or 3-3 for all your kf, (in drf settings). You'll prevent 95% of the pf from appearing... (but there might still be a few ...)

esby

I hope i'm not too cryptic... :)

[Pen-Pen]

perfectly clear, that's the kind of answer I expected, thanks a lot :)