[FFmpeg-devel] [PATCH] add fieldorder video filter
mark at mdsh.com
Thu Mar 31 09:47:38 CEST 2011
Second version of this filter. Renamed and updated from the suggestions
given for the first version.
Converting to and from interlaced PAL DV files, with their
bottom-field-first interlace field order, can be a pain. Converting tff
files to DV results in tff DV files, which are hard to work with in
The attached filter can:
Convert field order by either moving all of the lines in the picture up
by 1 line (bff to tff conversion) or down by 1 line (tff to bff
conversion). The remaining line, the bottom line in bff to tff
transforms or the top line in tff to bff transforms, is filled by
copying the closest line in that field.
Previous to this filter I have used a filter chain like this to do bff
to tff conversion.
but that chain does not fill the remaining line.
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