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[HELP] Vapoursynth: core.imwri.Read on Windows 10 is extremely slow
#2
Quote:Have you ever heard of anything like this? If you don't think this is Hybrid specific, do you have an idea on where I can ask about this?
Nope.
What does the Vapoursynth script used look like? (does chaning the thread count change anything?)
What resolution do the images have?

General side notes:
- I hope your images ly on a local hdd/ssd and not on a network drive.
- When handling tons of images make sure that your anti virus tools are not slowing down processing.


-> I will try to reproduce this and report back.
To be sure I do the same as you I'll converted a clip with 150+k frames and simple load it in Hybrid through the Image Sequence dialog and then open the Vapoursynth preview. (will place the images on a normal hdd and not on an ssd since you didn't say what you did).

Since you mentioned that vsViewer is started, this is probably not an issue with Hybrid itself, but rather with Vapoursynth or your system setup.

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Looking over at the documentation https://amusementclub.github.io/doc/plugins/imwri.html the image gets the first file number and then loads everything behind that number.
(Hybrid will then trim off the unneeded images.) So depending on your hdd speed the filter will probably at least check the file names of all files.



Cu Selur
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
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RE: Vapoursynth: core.imwri.Read on Windows 10 is extremely slow - by Selur - 14.02.2022, 21:06

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