Using ffmpeg to create looping apng

Question

I'm trying to create looping apng files from mkvs. My problem is that they don't loop. The files play once, but stop.

This is what I'm doing:

 ffmpeg -ss 16:43 -i ./10.mkv -loop 10 -t 1 -filter:v "setpts=PTS-STARTPTS, crop=1200:800, hqdn3d=1.5:1.5:6:6, scale=600:400"  10-file-2.apng

I've tried -loop -1 -loop 10 -loop 1 but there is no looping done. My version is

ffmpeg-3.3.el_capitan.bottle.tar.gz

Answer 1

The parameter for looping APNGs is -plays.

ffmpeg -ss 16:43 -i ./10.mkv -plays 10 -t 1 -vf "setpts=PTS-STARTPTS, crop=1200:800, hqdn3d=1.5:1.5:6:6, scale=600:400"  10-file-2.apng

• -plays 0: loops forever
• -plays 1: plays once (i.e. no loop)
• etc.