[FFmpeg-devel] [PATCH]Reset rotation information when using the transpose filter
nicolas.george at normalesup.org
Thu Nov 15 19:57:53 CET 2012
Le quintidi 25 brumaire, an CCXXI, Reimar Döffinger a écrit :
> Well, I think there is rarely (never?) a use case for both.
> So _ideally_ I would say the best thing would be to have these possible
> 1) -vf rotate=n:hard : read in the metadata rotate from the input,
> remove it on the output, rotate by n + previous metadata rotate
> 2) -vf rotate=n:soft : do not do any processing, update or add
> rotate metadata to correspond to the previous value + n.
Is there any good reason to keep soft rotation when transcoding? The way I
see it, but I may be wrong, soft rotate is for rotating without transcoding,
and hard rotate should be preferred whenever possible, if only because a lot
of players will ignore soft rotate.
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