Dither_out filter issue

[alkoon]

Hey everyone!

I just start some test with "Dither_convert_8_to_16" filter, but I got problem when i used Dither_out filter

here is my code:

ffvideoSource("E:\encoding\test_new\TEST[1080p].mkv") 
Dither_convert_8_to_16()
Dither_resize16nr(1280,720, csp =  "YV24") 
Dither_out()

the video resolution become 2560x720 .


any help plz

thanx.

[Bernix]

Can't this be a problem?

Resizes a 16-bit clip.
The function can resize interlaced content, but only if presented as separated, interleaved fields. It uses the Avisynth parity information to detect fields and maintain the correct chroma and luma positions. If this behaviour is not desired, add an AssumeFrameBased() before the resizing call.

Bernix

[sneaker]

This is completely normal. AviSynth (not AviSynth+) cannot natively handle >8 bit so if you view the script it will look like this with double width (basically it converts the 16 bits into 8+8 bits - there is also stacked variant). You just have to tell your encoder that input is actually 16 bit.

E.g.:
avs2pipemod -rawvideo "script.avs" | x264 - --demuxer raw --input-depth 16 --input-res 1280x720 --fps 24000/1001 -o "output.264"

You can read about it in the Dither documentation. It's very good. (But not developed anymore AFAIK. People have switched to AviSynth+ or VapourSynth.)

[alkoon]

Actually I have AviSynth+ (r1576) in my laptop, and in my server I have AviSynth 2.6
in both I got same result , even with >>

avs2pipemod -rawvideo "script.avs" | x264 - --demuxer raw --input-depth 16 --input-res 1280x720 --fps 24000/1001 -o "output.264"

but everything is okay with I used DitherPost(), but Dither_out() is the right filter to use

DitherPost = Adds the dither, turning a 16-bit clip generated by Dither1Pre, Dither2Pre or a mod16 denoiser into a regular 8-bit clip.
Dither_out() =This function allows Avisynth to output 16-bit YUV pixel components

so I think isn't okay to use DitherPost instead of Dither_out !

thank you.

[poisondeathray]

Are you encoding 10bit444 ? You have to use a 10bit x264 binary and specify --input-csp i444 --output-csp i444

(If not 444 then why "YV24" in your script ?)

[sneaker]

Two possible problems:

A. As poisondeathray saw I missed the csp = "YV24". Then the command is a bit different:
avs2pipemod -rawvideo "script.avs" | x264 - --demuxer raw --input-depth 16 --output-depth 10 --input-csp i444 --output-csp i444 --input-res 1280x720 --fps 24000/1001 -o "output.264"

B. You are using AviSynth+ with ffms2. If ffms2 is recent and your source is not 8 bit it may be in non-8-bit-AviSynth+ format. But Dither package doesn't understand those and treats input like 8 bit. Then you get problems.

To properly handle either:

ffvideoSource("E:\encoding\test_new\TEST[1080p].mkv") 
ConvertBits(16)
ConvertToStacked()
Dither_resize16nr(1280,720, csp =  "YV24") 
Dither_out()

or simply with native AviSynth+

ffvideoSource("E:\encoding\test_new\TEST[1080p].mkv") 
ConvertBits(16)
ConvertToYUV444()
Spline16Resize(1280, 720)

For the last the command is a bit simpler:
avs2pipemod -y4mp "script.avs" | x264 - --demuxer y4m --output-depth 10 --output-csp i444 -o "output.264"

You have to use a 10bit x264 binary and specify --input-csp i444 --output-csp i444

Note that for 10 bit output you may now need to specify --output-depth 10. Latest x264 now supports multi-depth builds (like x265).

[alkoon]

her is my bat script

avs2yuv test.avs - | x264.2851kMod.10bit.x86_64 --preset veryslow --crf 16 --input-depth 10 --input-csp i444 --output-csp i444 --deblock 1:-1 --aq-mode 2 --subme 10 --no-fast-pskip --chroma-qp-offset -3 --qcomp 0.65 --aq-strength 0.7 --fps 24000/1001 --output "testPC4.mkv" - --demuxer y4m

Maybe i should use the Avisynth+ r2xx ver & up!!

gonna download Avisynth+ r2580 ver and i will try.


Thanx everyone =).

[sneaker]

1. Use avs2pipemod, not avs2yuv.
2. Use the commands I used, don't change them however you like.

If it still does not work show what script and command you are using now. There have been several examples and now I don't know what you are using right now.

[alkoon]

where can i download the latest x264 ?

I download from here http://www.x264.nl/x264_main.php & http://komisar.gin.by/

both of them gives me an error, unknown --output-depth 10
isn't --input-depth 10 enough ?!


So I just tried this (without --output-depth 10 )

script.avs :

ffvideoSource("TEST[1080p].mkv")
ConvertBits(16)
ConvertToStacked()
Dither_resize16nr(1280,720, csp = "YV24")
Dither_out()
trim(50,100)

>> Video resolution become 2560x720

bat:

avs2pipemod.exe -y4mp "script.avs" | x26410b.exe - --demuxer y4m --input-depth 16 --input-res 1280x720 --output-csp i444 --fps 24000/1001 -o "output.264"

the encoder couldn't encode the input file only 1 frame

[sneaker]

Latest official binary is r2893. It's very recent, komisar doesn't have it yet. (x264.nl has been abandoned for years)

[alkoon]

ok
I used this one here :
https://download.videolan.org/x264/binaries/win32 (x264-10b-r2851-ba24899.exe - 26-Jun-2017 20:04 )

same I got an error :

unknown --output-depth 10

[sneaker]

2851 < 2893
Download the one at the very bottom.

[alkoon]

ok
bat:

avs2pipemod.exe -y4mp "script.avs" | x264-r2893-b00bcaf.exe - --demuxer y4m --input-res 1280x720 --output-depth 10 --output-csp i444 -o "output.264"

result: attachment

[poisondeathray]

Don't mix and match commandlines. Only raw requires specifying parameters, y4m has header information and should convey info like resolution, frame rate

It works for me with komisar's old 10bit x264 . I tested x86 . Mine is renamed to "x264k32_10.exe"

avs2pipemod -rawvideo input.avs | x264k32_10.exe --demuxer raw --input-depth 16 --input-res 1280x720 --fps 24 --input-csp i444 --output-csp i444 -o output.mp4 -

input.mp4 was a "regular" 8bit AVC 1920x1080 24fps (not 23.976 like yours, so you would use --fps 24000/1001) . ffms2 would have worked too

LSmashVideoSource("F:\input.mp4")
Dither_convert_8_to_16()
Dither_resize16nr(1280,720, csp =  "YV24") 
Dither_out()

[alkoon]

Thank you guys, but the problem still exist with avs script

this command help now to encode 1280x720 video, but the major problem still a same before & after encoding

avs2pipemod.exe -rawvideo "script.avs" | x264-r2893-b00bcaf.exe - --demuxer raw --input-res 1280x720 --input-depth 10 --output-depth 10 --output-csp i444 -o "output.264"-

before



after

[_Al_]

For what you do Vapoursynth instead of Avisynth might be a better choice, 64bit Vapoursynth, starting to forget about 32bit apps,
I noticed that guys working with anime videos are jumping that direction.

[poisondeathray]

How are you decoding the output file ?

Cut a piece of your mkv with mkvtoolnix and upload the sample here

[alkoon]

here it's :
https://files.fm/f/pngrnbgn

For what you do Vapoursynth instead of Avisynth might be a better choice, 64bit Vapoursynth, starting to forget about 32bit apps,
I noticed that guys working with anime videos are jumping that direction.

Actually I used Vapoursynth but still not familiar with it, but i think I'm going use it again.
thank you guys for help =).

[sneaker]

Thank you guys, but the problem still exist with avs script

this command help now to encode 1280x720 video, but the major problem still a same before & after encoding

avs2pipemod.exe -rawvideo "script.avs" | x264-r2893-b00bcaf.exe - --demuxer raw --input-res 1280x720 --input-depth 10 --output-depth 10 --output-csp i444 -o "output.264"-

--input-csp i444 --input-depth 16 (--fps 24000/1001)

[alkoon]

Thank very much guys (poisondeathray & sneaker)
everything is okay now, I have got exactly what I want, finally =) .

but I have one more question, this is what the input info should be, right?
YUV-444-planar-8bit... etc.

[sneaker]

That is the native AviSynth format as seen by avs2pipemod. 2560x720 at 8 bit. But we tricked by actually using it as 1280x720 16 bit and just tell x264 that's what coming. So everything is correct.

[alkoon]

I got it, Thanks a lot.