[FFmpeg-user] Quicktime DV MOVs - 2 different SAR informations

Christoph Gerstbauer christophgerstbauer at gmail.com
Thu May 15 16:56:29 CEST 2014


Hello,

I was a little bit wrong:

Fileprobe 1 has a CORRECT SAR value: SAR 59:54 -> DAR 295:216
Because Digital PAL SD sources do have a SAR of 59:54 -> SAR 1.09:1 -> 
DAR 295:216 (in common it is also named as 4:3, but technical it is not 4:3)
Analog SD sources have a SAR of 1.07:1 and THAT is the real 4:3 Aspect 
Ratio.
Info to this facts: 
http://www.mikeafford.com/blog/2009/03/pal-d1-dv-widescreen-square-pixel-settings-in-after-effects-cs4-vs-cs3/
So the b.) values is correct.

Fileprobe 1:
a.) 720x576 [SAR 16:15 DAR 4:3]
b.) SAR 59:54 DAR 295:216

Therfore: only Fileprobe 2 has a wrong SAR 178:163 -> SAR 1.09:1 -> DAR 
1958:1467 (close to 4:3, but the video is 16:9)

Fileprobe 2:
a.) 720x576 [SAR 64:45 DAR 16:9]
b.) SAR 178:163 DAR 1958:1467


bg
Christoph


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