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Should I use the CCIR 601 sequence setting for editing footage transfered from Beta to DVCAM
Greetings, Should I use the CCIR 601 sequence settinf for editing footage that has been transfered from Beta to DVCAM?
There is a 6 pixel difference in Beta footage, so when viewed on a computer there’s a black border on the left side of the frame, which is what i’m trying to avoid.
Any thoughts?
Sincerely, Jack Pitzer -
3 Replies
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The 6 pixel difference you mention is actually on the top and bottom…..there are 6 additional lines of video with CCIR 601 486 footage. DV and DVCPro50 along with MPEG-2 cut it down to 480. Should you use the CCIR 601 setting? It depends on which codec you will use for the final output. If you want to work in standard DV then use the DV setting (same if you use DVCPro50). If you want to use a 486 codec like Apple’s uncompressed 8 bit then you will set it up with the 486 CCIR 601 setting.
It is codec dependent not source tape dependent.
The black on the left side could have been caused during the dub from Beta if one of the deck’s sync was off a bit. There is a horizontal sync setting that could push the image to the left or right. This is not so unusual actually.
But the 6 pixel difference is vertical not horizontal.
Rich Rubasch
Tilt Media Inc -
When you put DV footage in a D1 sequence, you should adjust it so that it has 4 of the extra black pixels on the bottom and 2 on the top.
Have a wonderful day.
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If you see black at the left or right, then that’s correct. Because analogue video can “move” around with sync and timebase errors, digital video was designed to record more to the left and right than actually would normally exist in analogue video to make sure that even with sync errors, nothing is missed.
Graeme
– http://www.nattress.com – Film Effects and Standards Conversion for FCP
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