Opened 9 months ago

Last modified 9 months ago

#8654 new defect

Crash with kmsgrab, scale_vaapi and hwdownload

Reported by: 0x53ee71ebe11e Owned by:
Priority: important Component: undetermined
Version: git-master Keywords: vaapi crash
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no


While trying to figure out another problem (#8377, may or may not be related), I came upon this crash:

ffmpeg_g -v 9 -loglevel 99 -f kmsgrab -framerate 60 -i - -map 0 -vf 'hwmap=derive_device=vaapi,scale_vaapi=960:540,hwdownload,format=bgr0' -c:v h264 -preset veryfast /tmp/output.mp4

I changed the command line from over in that other ticket. The idea was to skip the hardware encoder and use the software encoder instead after scaling down the source on the gpu. And I was greeted with a crash. See attachement.

Leaving out the scale_vaapi filter works without crash.

I am not sure if using scale_vaapi without using the vaapi encoder afterwards is even a valid thing to do, but it shouldn't crash no matter what.

Attachments (1)

output.txt (24.1 KB) - added by 0x53ee71ebe11e 9 months ago.

Download all attachments as: .zip

Change History (3)

Changed 9 months ago by 0x53ee71ebe11e

comment:1 Changed 9 months ago by 0x53ee71ebe11e

  • Component changed from ffmpeg to undetermined
  • Summary changed from Crash with kmsgrab, vaapi_scale and hwdownload to Crash with kmsgrab, scale_vaapi and hwdownload

comment:2 Changed 9 months ago by cehoyos

  • Keywords vaapi crash added
  • Priority changed from normal to important

Looks like "wrong bug tracker" to me.

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