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ffmpeg -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format vaapi -i 1304.mp4 -q:v 4 -c:v h264_vaapi ./1304_compress_GPU.mp4
[AVHWDeviceContext @ 0x560454e09680] Failed to initialise VAAPI connection: -1 (unknown libva error).
Device creation failed: -5.
[h264 @ 0x560454e3a8c0] No device available for decoder: device type vaapi needed for codec h264.
Stream mapping:
Stream #0:1 -> #0:0 (h264 (native) -> h264 (h264_vaapi))
Stream #0:0 -> #0:1 (aac (native) -> aac (native))
Device setup failed for decoder on input stream #0:1 : Input/output error
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pacman -Ss libva
extra/libva 2.7.0-1 [installed]
Video Acceleration (VA) API for Linux
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