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Tehnicni · 24th March 2019, 00:38

Attached you have 2 crops, 1st is from 1920 x 1080 picture (which I first resize from 12M pixels origin in VirtualDub) and 2nd from Print Screen how is these picture look opened in VirtualDub. Because of these I get ugly banding in time lapse video. https://youtu.be/IFP4W7nd9VM If I open (in VirtualDub) origin 12M pixels picture and downsize it to 1920 x 1080 with the same resize plugin, there is no banding. https://youtu.be/_zdAa1RwUvM
Without youtube reencoding banding in upper left corner is much uglier.
I also tried with VirtualDub 1.10.4 and it's the same.
I tried the quality of jpeg coding (in exporting downsized image in VirtualDub) 95 and 100 and it's the same.

Added later: Video make with VirtualDub with h264 8bit codec CQP 20 on my Dropbox
https://www.dropbox.com/s/9wzgh4wld5...50Q20.mp4?dl=0

Quite unusual, but for a sunset time lapse very serious mistake. In fact virtualdub it's for me, for time lapse, unusable.

24th March 2019, 00:38	#801 \| Link
Tehnicni Registered User Join Date: Mar 2019 Posts: 17	Opened jpg image is not correct Attached you have 2 crops, 1st is from 1920 x 1080 picture (which I first resize from 12M pixels origin in VirtualDub) and 2nd from Print Screen how is these picture look opened in VirtualDub. Because of these I get ugly banding in time lapse video. https://youtu.be/IFP4W7nd9VM If I open (in VirtualDub) origin 12M pixels picture and downsize it to 1920 x 1080 with the same resize plugin, there is no banding. https://youtu.be/_zdAa1RwUvM Without youtube reencoding banding in upper left corner is much uglier. I also tried with VirtualDub 1.10.4 and it's the same. I tried the quality of jpeg coding (in exporting downsized image in VirtualDub) 95 and 100 and it's the same. Added later: Video make with VirtualDub with h264 8bit codec CQP 20 on my Dropbox https://www.dropbox.com/s/9wzgh4wld5...50Q20.mp4?dl=0 Quite unusual, but for a sunset time lapse very serious mistake. In fact virtualdub it's for me, for time lapse, unusable. Attached Images Last edited by Tehnicni; 24th March 2019 at 01:10.