[FFmpeg-devel] [PATCH 02/10] avutil/stereo3d: add a Stereo3D type to signal that the packing is unspecified

[Anton Khirnov]

Quoting James Almer (2024-06-25 21:43:02)
> On 6/25/2024 4:39 PM, Anton Khirnov wrote:
> > Quoting James Almer (2024-06-25 21:14:01)
> >> On 6/25/2024 4:10 PM, Anton Khirnov wrote:
> >>> Quoting James Almer (2024-06-23 01:15:12)
> >>>> Given that a video stream/frame may have only one or both views coded with
> >>>> the packing information being unavailable, this commit adds a new type value
> >>>> AV_STEREO3D_UNSPEC for this purpose.
> >>>> The most common case for this is container level signaling of Stereo3D video
> >>>> where the specifics are defined at the bitstream level.
> >>>
> >>> So what information does the side data contain then?
> >>
> >> Everything but the packing type (AVStereo3DView, AVStereo3DPrimaryEye,
> >> baseline, horizontal_disparity_adjustment, and
> >> horizontal_field_of_view), which is what the vexu and hfov boxes signal.
> > 
> > Don't all these imply the video is stereo?
> 
> Yes, but not how the views are packed.
> I changed the description locally to "Video is stereoscopic but the 
> packing is unspecified.", fwiw. 2D should be the only value for monoscopic.

Ok, that addresses my concerns.

-- 
Anton Khirnov