Slow to open image sequence

Blue_MiSfit · 12th October 2020, 22:21

Hello!

I've been using VapourSynth with image sequences recently (TIFF and DPX) and have noticed that it was initially opening up in vapoursynth editor or ffmpeg very quickly, but now it takes many minutes to open. This seems odd..

Has anyone come across this? I'm on Windows if it matters.

poisondeathray · 12th October 2020, 22:38

I'm assuming you're using imwri.Read ?

Source filter only ?

I see no difference in opening speed here

Transfer issues ? Corruption? What about testing another TIFF or DPX sequence from another drive ? What about other image sequences (JPG, PNG) ?

Myrsloik · 12th October 2020, 22:48

How long are the sequences?

Blue_MiSfit · 14th October 2020, 00:52

Yes, just imwri.Read is slow to open.

These are ~1 hour DPX or TIFF. I have a couple of sequences. It seems like short sequences open much faster.

Blue_MiSfit · 14th October 2020, 01:56

Windows Defender! DOH! Once I disabled it everything flies

filler56789 · 14th October 2020, 02:56

Quote:

Originally Posted by Blue_MiSfit

Windows Defender! DOH! Once I disabled it everything flies

Friends don't let friends use Windows Defender...

Hope this helps

Jukus · 14th October 2020, 13:16

Quote:

Originally Posted by filler56789

Friends don't let friends use Windows...

Fixed

12th October 2020, 22:21	#1 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	Slow to open image sequence Hello! I've been using VapourSynth with image sequences recently (TIFF and DPX) and have noticed that it was initially opening up in vapoursynth editor or ffmpeg very quickly, but now it takes many minutes to open. This seems odd.. Has anyone come across this? I'm on Windows if it matters.

12th October 2020, 22:48	#3 \| Link
Myrsloik Professional Code Monkey Join Date: Jun 2003 Location: Kinnarps Chair Posts: 2,555	How long are the sequences? __________________ VapourSynth - proving that scripting languages and video processing isn't dead yet

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12th October 2020, 22:38	#2 \| Link
poisondeathray Registered User Join Date: Sep 2007 Posts: 5,377	I'm assuming you're using imwri.Read ? Source filter only ? I see no difference in opening speed here Transfer issues ? Corruption? What about testing another TIFF or DPX sequence from another drive ? What about other image sequences (JPG, PNG) ?

14th October 2020, 00:52	#4 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	Yes, just imwri.Read is slow to open. These are ~1 hour DPX or TIFF. I have a couple of sequences. It seems like short sequences open much faster.

14th October 2020, 01:56	#5 \| Link
Blue_MiSfit Derek Prestegard IRL Join Date: Nov 2003 Location: Los Angeles Posts: 5,989	Windows Defender! DOH! Once I disabled it everything flies