We need a custom library for ffmpeg to be able output to Blackmagic Decklink cards or any Directshow capable output devices. Ffmpeg accepts Directshow input devices with dshow option, this is also possible in Linux with BMDTools so this library can even use their library as reference.
Options: Must accepts all industry standard formats, PAL, NTSC, SD, HD formats.
P.S. price is slightly negotiable.
3 freelancers are bidding on average $721 for this job
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