[BUG] .TS transport stream preview is stuck / doesn't work

[tailland]

ok, i will try a few things.
(btw, i had no actual filters activated when i started the preview)

update1:
quite interesting. i activated some filters, without previewing the output, and started a basicvsr/ntire3 run on it.. it runs now with like 6fps and in 12hours, i'll now if it completed the task successfully.