```gpac -i avgen:dur=2  @ c=h264 -o gpac.mp4``` works but ```gpac -i avgen:dur=2  @ c=h264 @ bsrw -o gpac.mp4``` loops forever.
Introduction of bsrw filter breaks execution
This is a GitHub Issue
repo:gpac
owner:gpac
Title : Introduction of bsrw filter breaks execution
Issue date:

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```gpac -i avgen:dur=2  @ c=h264 -o gpac.mp4``` works but ```gpac -i avgen:dur=2  @ c=h264 @ bsrw -o gpac.mp4``` loops forever.
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