[FFmpeg-user] setting image2 format flag update

[Daniel Oberhoff]

Hello,

We would like to run the image2 output format with the update flag, such that it continuously updates a single image (very useful for website thumbnails…) but we can’t for the death of us not find out how to specify it. Can anyone help?

we have tried it like this:

 ffmpeg -f lavfi -i testsrc=duration=10:size=1280x720:rate=30 -f image2 -fflags +update frame.jpg -y

but we get

[image2 @ 0x7fa921000c00] [Eval @ 0x7ffeee793b00] Undefined constant or missing '(' in 'update'
[image2 @ 0x7fa921000c00] Unable to parse option value "update"

Any ideas?

Best