Vapoursynth

[Myrsloik]

Originally Posted by hydra3333

Per this post http://rationalqm.us/board/viewtopic...3&p=6380#p6380 DG has added 2 new avisynth gpu accelerated filters,

and will be adding more new gpu accelerated filters in the near future, eg DGDeblock http://rationalqm.us/board/viewforum.php?f=14

Everyone loves to have quality good and extremely fast filters ... So now wondering 2 things :-

1. can we please add these to Vapoursynth i.e. https://github.com/vapoursynth/vapou...nth_compat.cpp ?

2. How can we add new filters quickly from time to time without having to wait for new releases of Vapoursynth ?
It was suggested that maybe have a user-editable config file so that we can add our own filter definitions from time to time pending new releases of Vapoursynth ?
Such an approach would be really handy for other new and updated filters too.

1. Sure, I'll add them.

2. You don't, write native stuff. Or recompile only avscompat.dll on your own. All you need is vs2017 community which is free.

[hydra3333]

Originally Posted by Myrsloik

1. Sure, I'll add them.

2. You don't, write native stuff. Or recompile only avscompat.dll on your own. All you need is vs2017 community which is free.

Beaut, thanks.

OK "vs2017 community" to recompile only a "portable" avscompat.dll on my own ... now I'm off to look up how to do that for x64 and then plonk a replacement AvsCompat.dll under
Vapoursynth\vapoursynth64\coreplugins

Very definitely looking forward to an expanded set of amazingly fast GPU accelerated filters
Imagine, if you would, a gpu based QTGMC or equivalent (well, one can always live in hope).
Exciting times !

[Pat357]

After I got the info about fmtconv being no longer updated, I started looking at ZIMG (again!)
Do we still need the ZIMG (libzimg) plugin with the current VS37 or is this completely included in VS ?

I know the build-in resizers are based on the Zimg lib., but maybe for some other things we still need the whole lib.
What is the name-space to access the Zimg lib functions directly ?
Anyway, without my (outdated) plugin loaded, I don't see the Z name-space in the function list.

Also the same question about libimwri.dll. Is this plugin still needed ?

[TheFluff]

zimg is bundled with VS. core.resize.whatever just calls zimg directly - there are no VS-specific resizers that are based on zimg. There is no more functionality in zimg than what's in core.resize, as far as I know.

[Pat357]

Thanks, so the Zimg lib plugin is no longer required or even supported.

What about the ImageMagick Writer-Reader ? In the VS documentation it says "in the source tree".
I guess this is also compiled in VS and we don't need a separate plugin for it ? correct ?

[Myrsloik]

Originally Posted by Pat357

Thanks, so the Zimg lib plugin is no longer required or even supported.

What about the ImageMagick Writer-Reader ? In the VS documentation it says "in the source tree".
I guess this is also compiled in VS and we don't need a separate plugin for it ? correct ?

You still need a separate plugin on windows due to it being huge. And not working as well as I'd like.

[Pat357]

Any URL to download the current version from libimwri.dll (ImageMagick Writer-Reader for Windows) ?
I found my version somewhere it the tread about it dd 08/06/2016.

It would be a good idea to add an url for libimwri.dll to your "documentation" from VS homepage, just as you did for all other plugins.

[Izuchi]

I'd like some assistance regarding how to do fade in/outs. I tried following jackoneill's example (posted 3 years ago) but no luck.

Originally Posted by jackoneill

fade_input = # your source here
blank = core.std.BlankClip(clip=fade_input, length=1, color=[255, 128, 128]) # assumes you're working with 8 bit YUV
fade_frames = []
for i in range(fade_input.num_frames):
    fade_frames.append(core.std.Merge(clips=[fade_input[i], blank], weight=i/(fade_input.num_frames-1)))
fade_output = core.std.Splice(clips=fade_frames)

While I'm at it, is it possible to implement fade in/out as an in-built function rather than a script?

[Myrsloik]

Originally Posted by Izuchi

I'd like some assistance regarding how to do fade in/outs. I tried following jackoneill's example (posted 3 years ago) but no luck.



While I'm at it, is it possible to implement fade in/out as an in-built function rather than a script?

"no luck" means what exactly?

[Izuchi]

Originally Posted by Myrsloik

"no luck" means what exactly?

Nevermind, I just found out that the reason why it wasn't working was because the arguments for Merge had changed since jackoneill's initial post three years ago. Everything's now working as it should.

[Selur]

using:

# Imports
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="G:/Hybrid/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# Loading F:\TestClips&Co\Test-AC3-5.1.avi using LWLibavSource
clip = core.lsmas.LWLibavSource(source="F:/TESTCL~1/TEST-A~1.AVI", format="YUV420P8", cache=0)
# Loading F:\TestClips&Co\Subtitles\ass subtitle\test.ssa using SubText
clip = core.sub.TextFile(clip=clip, file="F:/TestClips&Co/Subtitles/ass subtitle/test.ssa")

clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P16, matrix_s="470bg")
# Output
clip.set_output()

I get:

Error getting the frame number 0:
Resize error 3074: no path between colorspaces

I'm clearly missing something. I thought TextFile would return RGB24 and converting to YUV444P16 should work,..

[Selur]

Got it,... adding:

clip = core.resize.Point(clip, matrix_in_s="470bg")

before the TextFile call fixes the issue.

[Myrsloik]

Originally Posted by Selur

using:

# Imports
import vapoursynth as vs
core = vs.get_core()
# Loading Plugins
core.std.LoadPlugin(path="G:/Hybrid/vsfilters/SourceFilter/LSmashSource/vslsmashsource.dll")
# Loading F:\TestClips&Co\Test-AC3-5.1.avi using LWLibavSource
clip = core.lsmas.LWLibavSource(source="F:/TESTCL~1/TEST-A~1.AVI", format="YUV420P8", cache=0)
# Loading F:\TestClips&Co\Subtitles\ass subtitle\test.ssa using SubText
clip = core.sub.TextFile(clip=clip, file="F:/TestClips&Co/Subtitles/ass subtitle/test.ssa")

clip = core.resize.Bicubic(clip=clip, format=vs.YUV444P16, matrix_s="470bg")
# Output
clip.set_output()

I get:


I'm clearly missing something. I thought TextFile would return RGB24 and converting to YUV444P16 should work,..

Can you post the FrameProps output from after LWLibavSource and TextFile?

[Selur]

Googling, I stumbled over:

IMPORTANT: When using VapourSynth-Viewer you will receive "Resize error 3074: no path between colorspaces" when a YUV video is imported that has an "Unknown" color matrix. Read the "Color Matrix" section for examples of how to manually set a color matrix for a video source.

source: http://www.l33tmeatwad.com/vapoursyn...eo-information

Can you post the FrameProps output from after LWLibavSource and TextFile?

adding 'clip = core.text.FrameProps(clip)' before or after always shows:

Frame properties:
_ChromaLocation: 0
_DurationDen: 25
_DurationNum: 1
_FieldBased: 0
_Matrix:2
_PicType: I
_Primaries: 2
_SARDen: 1
_SARNum: 1
_Transfer: 2

[Myrsloik]

Originally Posted by Selur

Googling, I stumbled over:

source: http://www.l33tmeatwad.com/vapoursyn...eo-information


adding 'clip = core.text.FrameProps(clip)' before or after always shows:

Frame properties:
_ChromaLocation: 0
_DurationDen: 25
_DurationNum: 1
_FieldBased: 0
_Matrix:2
_PicType: I
_Primaries: 2
_SARDen: 1
_SARNum: 1
_Transfer: 2

Yes, Matrix:2=unknown. You need to use matrix_in_s as well (or skip matrix_s)

[Selur]

Matrix:2=unknown

That explains it.
-> Would be nice if the FrameProps filter could use normal strings instead of numbers to indicate the matrix.
Alternatively the documentation should include a mapping between the numbers and the matrices.

[Myrsloik]

Originally Posted by Selur

That explains it.
-> Would be nice if the FrameProps filter could use normal strings instead of numbers to indicate the matrix.
Alternatively the documentation should include a mapping between the numbers and the matrices.

I'll probably add that in the next version. Not a bad idea for debugging

[sneaker_ger]

While we're at it: sub.TextFile() will display "MaskedMerge: Input frames mus have the same range" if supplied with a full range clip to blend. Can get a bit complicated with these error messages not showing the line number.

[Selur]

Thanks, wouldn't have guessed from the description.

[stax76]

Did anybody find a way to render srt subtitles?