You may be thinking of older versions of Quick Sync which exposed less control to the developer. The paper discusses how using a higher bitrate is required to compensate if a faster, less compute-intensive QSV preset is chosen by the developer: As I previously said, I don't see a significant difference.Īs you can see from this white paper ("Intel QuickSync Video and FFmpeg"), Quick Sync Video (QSV) has both adjustable quality settings and adjustable bit rate.
You will need to download and play them locally to assess the relative quality of each. If anyone wants to see the two video files encoded with and without Quick Sync from FCPX 10.3.4, they are here. If anyone wants to test this themselves, the original YCbCr video files can be downloaded from the location listed in the above paper. It would be interesting if anyone can see the difference between these two: The frame grab was from QT10 and exported from Preview as PNG.
#COLORFINALE OPENCL FAILURE 1080P#
Instead of using a Disney intro of unknown pedigree, if you use an industry-standard encoding sequence such as those mentioned in the above paper you'll get more representative results.īelow is are two frame grabs of the industry-standard encoding sequence "crowd_run" which was converted from uncompressed YCbCr data to ProRes 422HQ via ffmpeg, then imported to FCPX 10.3.4 and exported as H264 1080p using both Quick Sync (FCPX "fast") and without Quick Sync (FCPX "better quality").
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