Fix: Correct hardware filter chaining for QSV/VAAPI to prevent video corruption#25
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DeRoelO wants to merge 2 commits into
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Fix: Correct hardware filter chaining for QSV/VAAPI to prevent video corruption#25DeRoelO wants to merge 2 commits into
DeRoelO wants to merge 2 commits into
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This PR addresses a known issue with Intel Hardware Acceleration (QSV and VAAPI) where transcoded files could result in a corrupted "half-green" screen.
Key changes:
Filter Chain Optimization: Removed redundant hwupload calls in the "Pure HW path". Previously, hwupload was being applied to frames already residing in hardware memory (QSV/VAAPI surfaces), which caused buffer corruption and visual artifacts.
QSV Stability Tweak: Reduced the default look_ahead_depth from 100 to 40. A depth of 100 was causing instability and crashes on several Intel iGPU generations (especially mobile and older desktop models) when processing high-resolution content.
Redundant VPP Removal: Simplified the hardware filter chain to avoid unnecessary VPP (Video Post-Processing) steps when the format is already correct, further reducing the chance of driver-related glitches.
These changes significantly improve the reliability of hardware-accelerated transcoding for Intel users without sacrificing quality.