Opened 18 months ago

Last modified 18 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

Description

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 18 months ago.

Download all attachments as: .zip

Change History (3)

by 0x53ee71ebe11e, 18 months ago

Attachment: output.txt added

comment:1 by 0x53ee71ebe11e, 18 months ago

Component: ffmpegundetermined
Summary: Crash with kmsgrab, vaapi_scale and hwdownloadCrash with kmsgrab, scale_vaapi and hwdownload

comment:2 by Carl Eugen Hoyos, 18 months ago

Keywords: vaapi crash added
Priority: normalimportant

Looks like "wrong bug tracker" to me.

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