Anton Khirnov 0f5592cfc7 fftools/ffmpeg: supply hw device context to probe-filtergraphs ...

I.e. those that are only used to figure out input/output counts, since
some filters might expect a valid hw device in init and refuse to
initalize otherwise.

This requires complex filtergraphs to be created in a separate step
after parsing global options, after all hw devices are guaranteed to
exist.

2024-10-10 09:09:29 +02:00

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