Posting in case others run into this: I kept have my stitches just freeze on the Initializing screen; fortunately the logs gave me the hint I needed to get things fixed:
2024-10-14 13:29:34,600 INFO writing video file /Users/micah/Movies/.actionstitch/RedDevils_2024-10-13_0.mp4
2024-10-14 13:29:34,698 ERROR height not divisible by 2 (7250x2175)
2024-10-14 13:29:34,699 WARNING Traceback (most recent call last):
2024-10-14 13:29:34,699 WARNING File “as_stitchjob.py”, line 851, in run
2024-10-14 13:29:34,699 WARNING File “as_stitchjob.py”, line 464, in write
2024-10-14 13:29:34,699 WARNING File “av/stream.pyx”, line 155, in av.stream.Stream.encode
2024-10-14 13:29:34,699 WARNING File “av/codec/context.pyx”, line 476, in av.codec.context.CodecContext.encode
2024-10-14 13:29:34,699 WARNING File “av/codec/context.pyx”, line 285, in av.codec.context.CodecContext.open
2024-10-14 13:29:34,700 WARNING File “av/error.pyx”, line 336, in av.error.err_check
2024-10-14 13:29:34,700 WARNING av.error.ExternalError: [Errno 542398533] Generic error in an external library; last error log: [libx264] height not divisible by 2 (7250x2175)