On 3/13/2018 7:00 AM, Bryan Huh wrote:

> I was exploring the -tile filter for this, but the first obstacle I hit is
> that the -tile filter seems to consume a frame per tile. I have no way of
> saying I want to use the same static image for every tile.

Let's say the video dimensions are W x H.

I assume your watermark is correctly sized and smaller than W/10 x H/10. If not, add a scale filter before the pad in the command below.

Command would be

ffmpeg -i video.mp4 -loop 1 -i image -filter_complex "[1]pad=W/10:H/10:(ow-iw)/2:(oh-ih)/2:color=black@0,tile=10x10,trim=end_frame=1[wm];[0][wm]overlay" out.mp4

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