Vapoursynth

[_Al_]

Originally Posted by poisondeathray

no attribute 'YUV420PS'

former register_format(), now it is query_video_format(), I guess because of audio formats addition:

my_float_format = core.query_video_format(color_family=vs.YUV, sample_type=vs.FLOAT, bits_per_sample=32, subsampling_w=1, subsampling_h=1)
clip2 = clip.resize.Point(format=my_float_format)
print(clip2)
>>>
VideoNode
	Format: YUV420PS32

[poisondeathray]

Originally Posted by Izuchi

Would this be the correct command? vspipe script.vpy - | ffmpeg -f rawvideo -pix_fmt gbrpf32le -s 1920x1080 -r 24000/1001 -i - denoise.rgb

For raw RGB... but you can't read raw rgb float with vsrawsource. You would use denoise_%05d.exr for ffmpeg output, and imwri.Read with float_output=True for import back into vapoursynth. But there are issues with that workflow for some reason, it's not lossless if you check MakeDiff, I'm looking into it.

But if you use imwri.Write in vapoursynth it's lossless

output

clip = core.imwri.Write(clip, "TIFF", "imwri_Write_%05d.tiff",firstnum=0)

reimport

clipc = core.imwri.Read(r'imwri_Write_%05d.tiff', float_output=True)

[poisondeathray]

Originally Posted by _Al_

former register_format(), now it is query_video_format(), I guess because of audio formats addition:

my_float_format = core.query_video_format(color_family=vs.YUV, sample_type=vs.FLOAT, bits_per_sample=32, subsampling_w=1, subsampling_h=1)
clip2 = clip.resize.Point(format=my_float_format)
print(clip2)
>>>
VideoNode
	Format: YUV420PS32

Thanks it works.

I remember asking about not included pixel formats and Holy Wu told me about register_format - I should have remembered

https://forum.doom9.org/showthread.p...30#post1904930

[Myrsloik]

Originally Posted by poisondeathray

Thanks it works.

I remember asking about not included pixel formats and Holy Wu told me about register_format - I should have remembered

https://forum.doom9.org/showthread.p...30#post1904930

How did you end up with YUV420PS in the first place? Subsampled float is a quite weird thing to have

[poisondeathray]

Originally Posted by Myrsloik

How did you end up with YUV420PS in the first place? Subsampled float is a quite weird thing to have

It was not for me, scroll up a few posts

[Quadratic]

Originally Posted by Myrsloik

How did you end up with YUV420PS in the first place? Subsampled float is a quite weird thing to have

Why is YUV420PS "weird"? It can be achieved with vsutil and fmtc. It is not uncommon.

[Myrsloik]

Originally Posted by Quadratic

Why is YUV420PS "weird"? It can be achieved with vsutil and fmtc. It is not uncommon.

It's a very inefficient use of bits. You'd have an image that definitely looks better with full resolution chroma in YUV444P16 format and smaller size.

[Julek]

Originally Posted by Myrsloik

Now I need some input on which frame statistics to implement. If you generalize all of the functions in avisynth you get these 6 left. I've seen that difference is used a lot but are there any of these I could skip? I can't remember seeing the min/max/median used ever.
You can also suggest new ones if they're not too complicated.

Average(clip)
Difference(clip1, clip2)
PlaneMax(clip, float threshold)
PlaneMin(clip, float threshold)
PlaneMedian(clip)
PlaneMinMaxDifference(clip, float threshold)

The full list here:
http://avisynth.org/mediawiki/ScriptClip

Any chance to implement threshold for Min/Max now?
Dogway's retinex uses this, I know there is a plugin for it, but the output is not the same and I wanted to do some tests, if possible.

[Dogway]

Originally Posted by ChaosKing

Vapoursynth still has no official logo. How about something like this?

Beautiful logos! I like 3rd and 4th the best. 4th looks more like consumer oriented, it's third or fourth in neutral tones.

[groucho86]

Hi everyone,
I opened an issue on github but thought it may be worth posting here. I installed Vapoursynth R57 and imwri via homebrew and am trying to load a half-float EXR.

clip = core.imwri.Read(filename='halffloat.%03d.exr', firstnum=1,
                       float_output=True)
print(clip.get_frame(0))

Returns:

Filter Read returned a frame that's not of the declared format
VapourSynth encountered a fatal error: Filter Read returned a frame that's not of the declared format
libc++abi.dylib: terminating

float_output set to False works.

[Yomiko]

What's the reason for not allowing a GRAY plane extracted from an RGB clip resized to RGB because of its tagged matrix? It seems the matrix itself (if supported by VS) doesn't affect the output result.

[vxzms]

Would you plan to let the vspipe’s filter-time also show namespace? I think it would be more intuitive.

[Myrsloik]

Originally Posted by vxzms

Would you plan to let the vspipe’s filter-time also show namespace? I think it would be more intuitive.

Filter don't have a namespace but the functions that create them may or may not. So it's actually very hard to add what you'd expect as the namespace to your list.

If anything extending the graph output with time spent in various filters is probably the best way since then you can see which function is responsible.

[GB452]

Having a very strange issue: vsrepo can't detect VapourSynth. I had updated to VS 57, but had some issues (including this one) and uninstalled it and went back to what I was using previously, version 54, but I keep getting this error and I cannot find any suggestions on how to fix it online.

[ChaosKing]

Same happend to me after updating to R57.

[Yomiko]

Originally Posted by Yomiko

What's the reason for not allowing a GRAY plane extracted from an RGB clip resized to RGB because of its tagged matrix? It seems the matrix itself (if supported by VS) doesn't affect the output result.

Meanwhile GRAY clip with unspec matrix can be resampled. A bug?

[Myrsloik]

Originally Posted by Yomiko

Meanwhile GRAY clip with unspec matrix can be resampled. A bug?

No, gray clips are the Y in YUV so the same rules apply. You can resize unknown matrix YUV but you can't convert it to RGB.

[Selur]

I'm on Ubuntu 20.04, I compiled and installed Vapoursynth R57.
I also compiled a bunch of filters to "/home/selur/opt/vapoursynth/lib/python3.8/site-packages"

paths seem to be correct:

echo $LD_LIBRARY_PATH
/home/selur/opt/vapoursynth/lib
echo $PYTHONPATH
/home/selur/opt/vapoursynth/lib/python3.8/site-packages
echo $PATH
/home/selur/.local/bin:/home/selur/opt/vapoursynth/bin:/home/selur/.local/bin:/home/selur/opt/vapoursynth/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

import vapoursynth as vs
core = vs.core
clip = core.std.BlankClip(format=vs.RGB24, color=[255, 255, 255])
clip = core.text.Text(clip, core.version())
clip.set_output()

works fine

explicit loading a library (libvslsmashsource.so):

import vapoursynth as vs
core = vs.core

core.std.LoadPlugin('/home/selur/opt/vapoursynth/lib/vapoursynth/libvslsmashsource.so')

clip = core.lsmas.LWLibavSource(source="test.mov", format="YUV422P10", cache=0, fpsnum=30000, fpsden=1001, prefer_hw=0)
clip = core.resize.Point(clip, matrix_in_s="470bg",range_s="limited")

clip.set_output()

works fine too,

but using:

import sys
import vapoursynth as vs
core = vs.core

sys.path.append('/home/selur/opt/vapoursynth/lib/vapoursynth')

clip = core.lsmas.LWLibavSource(source="test.mov", format="YUV422P10", cache=0, fpsnum=30000, fpsden=1001, prefer_hw=0)
clip = core.resize.Point(clip, matrix_in_s="470bg",range_s="limited")

clip.set_output()

doesn't.
It returns "Python exception: No attribute with the name lsmas exists. Did you mistype a plugin namespace?"

-> How can I tell Vapoursynth where to look for the libraries?
I though:

sys.path.append('/home/selur/opt/vapoursynth/lib/vapoursynth')

would do the trick, which it doesn't.

Cu Selur

[Myrsloik]

You're specifying the python search path, it's only used for import and similar python commands. You also shouldn't install filters in site-packages.

[Selur]

Sorry, my mistake. Didn't put the iflters in the site-packages.
site-packages only contains vapoursynth.la and vapoursynth.so
all compiled filters are in "/home/selur/opt/vapoursynth/lib/vapoursynth/"

Okay, so is there a way to somehow to use my folder as "/home/selur/opt/vapoursynth/lib/vapoursynth/" source for autoloading?