Warnings written to console when running SWT

[marcverhagen]

Bug Description

When running the tool locally on Gunicorn I see the following errors (the first one is repeated twelve times):

[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65580
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65580
[h264 @ 0x7fbed6fa3800] Missing reference picture, default is 65580
[h264 @ 0x7fbed6fad5c0] mmco: unref short failure
[h264 @ 0x7fbed6fad5c0] mmco: unref short failure

[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6fa3800] reference picture missing during reorder
[h264 @ 0x7fbed6fa3800] Missing reference picture, default is 65578
[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6fa3800] reference picture missing during reorder
[h264 @ 0x7fbed6fa3800] Missing reference picture, default is 65578
[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] reference picture missing during reorder
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6f99a40] Missing reference picture, default is 65576
[h264 @ 0x7fbed6fa3800] reference picture missing during reorder
[h264 @ 0x7fbed6fa3800] Missing reference picture, default is 65578

This happens after about a third of the video is processed. I was using the default settings so sampled frames were always at some multiple of 1000 milliseconds.

The output looks fine and has no warnings.

Reproduction steps

$ python app.py

$ clams source video:/LOCAL_PATH_TO/cpb-aacip-75-72b8h82x.mp4 > ex-aapb-75.mmif
$ curl "localhost:5000?pretty=True&minTimeframeScore=0.5" -d @ex-aapb-75.mmif > ex-aapb-75.json

I ran the app on two other full videos without any issues.

Expected behavior

No response

Screenshots

No response

Additional context

No response