I was trying to figure why the colors looked noticeably different in a upscaled video—when it wasn't a problem with another upscaler I was experimenting with. I think the problem is with the frame extractor which gives different results compared to when I use FFMPEG.
Look at the hair color from the images below. I used a color picker tool to measure it. Interestingly the color difference when QS extracts frames from an upscaled video is much smaller compared to the original YouTube
Video source https://www.youtube.com/watch?v=QvMNzt3iXyg
For some reason, these colors may measure differently in the web browser compared to when downloaded. So keep that in mind.
Original Video-FFMPEG extracted
Hair color: rgb(243, 203, 187)
Original Video-QS Extracted
Hair color: rgb(238, 200, 187)
QS Upscaled Video-FFMPEG extracted
config (RealESR_Gx4_InputR-100_OutputR-50_Blending-Low)
Hair color: rgb(237, 198, 186)
QS Upscaled Video-QS extracted
Hair color: rgb(236, 198, 185)
I'm not sure whether the entire issue is the frame extraction. But I can confirm the colors in the upscaled video are very noticeably darker than the original while playing the videos in multiple VLC instances.
I was trying to figure why the colors looked noticeably different in a upscaled video—when it wasn't a problem with another upscaler I was experimenting with. I think the problem is with the frame extractor which gives different results compared to when I use FFMPEG.
Look at the hair color from the images below. I used a color picker tool to measure it. Interestingly the color difference when QS extracts frames from an upscaled video is much smaller compared to the original YouTube
Video source https://www.youtube.com/watch?v=QvMNzt3iXyg
For some reason, these colors may measure differently in the web browser compared to when downloaded. So keep that in mind.
Original Video-FFMPEG extracted
Hair color: rgb(243, 203, 187)
Original Video-QS Extracted
Hair color: rgb(238, 200, 187)
QS Upscaled Video-FFMPEG extracted
config (RealESR_Gx4_InputR-100_OutputR-50_Blending-Low)
Hair color: rgb(237, 198, 186)
QS Upscaled Video-QS extracted
Hair color: rgb(236, 198, 185)
I'm not sure whether the entire issue is the frame extraction. But I can confirm the colors in the upscaled video are very noticeably darker than the original while playing the videos in multiple VLC instances.