[FFmpeg-devel] current way to tell if image is bottom up - possible bug

Michael Niedermayer michaelni at gmx.at
Thu Aug 23 20:18:02 CEST 2012

On Thu, Aug 23, 2012 at 01:56:04PM -0400, Don Moir wrote:
> It used to be that you could check AVCodecContext.extradata for "BottomUp" to determine if an image was bottom up.
> That no longer works and AVCodecContext.extradata is null.
> So is there a new way to determine this or does this need to be reported as a bug?
> I have a video that is now upside down because I cannot determine the orientation from ffmpeg as far as I can tell. It's also upside down in ffplay.

> It worked before but not sure how long ago that was.

if it worked before (in ffplay for example, and fails now)
then its a bug


Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

The educated differ from the uneducated as much as the living from the
dead. -- Aristotle 
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