decklinkvideosrc: Automatically detect widescreen vs. normal NTSC/PAL
Based on the AFD aspect ratio flag the source can detect (in mode=auto) whether this NTSC/PAL mode is actually a normal or a widescreen one and select the caps according to that.
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Based on the AFD aspect ratio flag the source can detect (in mode=auto) whether this NTSC/PAL mode is actually a normal or a widescreen one and select the caps according to that.