From: Pierre-Anthony Lemieux <pal@sandflow.com>
To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
Subject: Re: [FFmpeg-devel] [PATCH] [MXF] - Set aspect ratio for jpeg2000 images
Date: Fri, 26 Jan 2024 10:12:40 -0800
Message-ID: <CAF_7JxCYkdgZOJ=LFhhXLb0gpcSoHJqS8+f4fb3eSO_BD07Weg@mail.gmail.com> (raw)
In-Reply-To: <5bdcb479-65d6-4845-a443-eb66f517427b@ektacom.com>
On Fri, Jan 26, 2024 at 10:02 AM Cédric Le Barz <clebarz@ektacom.com> wrote:
>
> Set aspect ratio for jpeg2000 images.
"The image area on the reference grid is defined by its upper left
hand reference grid point at location (XOsiz, YOsiz), and its lower
right hand reference grid point at location (Xsiz – 1, Ysiz – 1)"
(15444-1, 8.2)
AFAIK setting the MXF aspect ratio item to the ratio of the image
pixel dimensions only works if (a) the pixel aspect ratio is 1 and (b)
the video is not interlaced -- see 6.2.1.2 and Annex H at
https://pub.smpte.org/doc/st2067-21/20221124-pub/.
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next prev parent reply other threads:[~2024-01-26 18:13 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-01-26 18:02 Cédric Le Barz
2024-01-26 18:12 ` Pierre-Anthony Lemieux [this message]
2024-01-30 9:47 ` Tomas Härdin
2024-01-30 10:36 ` Tomas Härdin
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