[FFmpeg-user] Forcing interlaced handling

Tim Nicholson tim.nicholson at bbc.co.uk
Wed Feb 1 14:39:38 CET 2012

I have some V210 files and in both .mov and .mxf wrapper do not seem to 
have any interlace flag settings, although I know them to be -tff.

I wish to convert them to dvvideo, however the fieldorder=bff filter 
only works if the source material is flagged as tff, which it is not.

I have tried various things, including using fieldorder=tff, 
fieldorder=bff so that the first filter does nothing but sets the flag, 
so that the second filter does what is required, but this failed.

I have also tried using -top before the input file, but this too did 
nothing, as did using a scale filter with scale=iw:ih:1.

Does anybody have an idea how to force tff interlace handling?

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