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DV Compression
Hi, need help on understanding the dv compression issue.
If I shoot a project on miniDV and capture it through firewire, to get little/no loss, do I set the compression to DV or None?
Similarly, when I output an edit, say for visual effects work, to maintain the integrity of the footage going from one computer to another, do I output with DV or None compression?
Thanks!
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4 Replies
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DV compression is almost loosless. so you can capture/edit and output using DV compression.
I used to capture via firewire using DV, than export to tiff/tga sequence for grading or compositing in After Effects and after that output to tape ( again DV compression ).
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Well first off, DV is compressed 5 to 1. When you digitize through firewire there is no loss in the signal. Once you add any effects or titles the video is recompressed. If you output to another system you can output the DV files and they can work with them. Your outsource person can convert it to uncompressed in the program they are working in.
Hope this helps-
Matthew
Quad 2.5 G5
OSX 10.4.X
Ram 4GB
FCP 4.5/AE 6.5/DVDSP3 -
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DV capture over firewire is just a file transfer. It’s just copying the compressed data off the tape onto your mac’s hard drive. There is no loss in this process at all. Similarly, if you then play out those captured clips back to tape, there is no loss. It’s only if you add effects or transitions that you can get a loss, and this, at least for one pass, is very transparent.
https://www.kenstone.net/fcp_homepage/beyond_dv_nattress.html explains it in a lot more detail.
Graeme
– http://www.nattress.com – Film Effects and Standards Conversion for FCP
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