On Tue, 21 Mar 2017 14:09:49 +0100 Clément Bœsch <u...@pkh.me> wrote:
> On Tue, Mar 21, 2017 at 08:42:58AM +0100, wm4 wrote: > > The old "API" that signaled rotation as a metadata value has been > > replaced by DISPLAYMATRIX side data quite a while ago. > > > > There is no reason to make muxers/demuxers/API users support both. In > > addition, the metadata API is dangerous, as user tags could "leak" into > > it, creating unintended features or bugs. > > > > Unfortunately, hacks have been added, that allow the user to override > > rotation by setting metadata explicitly, e.g. via > > > > -metadata:s:v:0 rotate=0 > > > > does remux and transcode properly keeps the property? And the other way > around, can we still remove the rotate property? Remuxing should keep the DISPLAY_MATRIX, there's nothing special about it. Not sure what you mean by removing the rotate "property". The mp4 muxer, which is the only thing seems to support writing rotation, always writes a display matrix. For removing metadata fields, no idea how that works. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
