
Originally Posted by
johnmeyer

Originally Posted by
poisondeathray
Did you read the other part about chroma variation between fields? The observation that there were 2 consecutive fields with the same chroma offset also suggests there is a drop - or is that "some artifact from camera motion too ?"
The chroma variation is on EVERY single field: the odd fields have one chroma balance and the even fields have another.
Yes, this was pointed out earlier - that's more evidence that there is a drop there if you read the earlier comments and analysis
The pattern breaks between field 7 and 8 . 2 consecutive fields with the same chroma offset because there is a missing field in between them. If you go later in the video the field the pattern is consistent
That , combined with the presence of the missing ffvh field in the DV recording is like 150% proof
Repeat this test, look at the U-channel histogram. Step through the fields. Watch it go left, right, left, right. That's the normal pattern. That doesn't happen between field 7 and 8. Because there is a field drop
Code:
ffvideoSource("Skiurlaub 1996_huffyuf.avi")
assumetff().separatefields()
histogram("levels")