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5th January 2017, 20:08 | #1 | Link |
Doom9ing since 2001
Join Date: Oct 2001
Location: Seattle, WA, USA
Posts: 2,002
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Detecting and removing progressive pulldown with FFmpeg
When 24p films get broadcast on 720p60 channels in North America, they get converted to 60p by using a 3:2:3:2 pulldown pattern, so that for every 4 unique film frames there are 10 video frames. Like this:
ABCD --> AABBBCCDDD Some broadcast encoders do this by using repeat flags (therefore leaving the original 24p cadence intact and relying on decoders to produce 60p output), but many just encode it as native 60p. I'm looking for ways with FFmpeg to:
Thanks! |
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