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Old 28th September 2019, 19:12   #1  |  Link
Cary Knoop
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Chrominance subsampling for MPEG-2 interlaced encodings

Interlaced MPEG-2 allows the chrominance samples to be aligned temporally to the lines or, less common, to the first field of the frame.

Is there an easy way to determine which method was used during encoding?
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Old 29th September 2019, 02:14   #2  |  Link
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Are you referring to field based encoding of interlaced sources? The only encoder which supports this AFAIK is Procoder / Carbon Coder. This option complies with the MPEG2 specs, but not with the DVD specs, so I never used it.

From the ECLPro readme for DVD Rebuilder:
Alsaysframe = 0:Use field base encoding for interlaced sources (better) - 1(default):Always use frame mode (more compatible) - Please use frame mode in DVD-RB else you get errors in rebuilding.
So I do not have an answer to your question how you can determine which mode was used during encoding.
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