DV or AVI capture

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ruggy1
Posts: 287
Joined: Sat Dec 11, 2004 5:51 am
Location: Sydney, OZ

DV or AVI capture

Post by ruggy1 »

A half hour capture of miniDV video turmed into a 40GB disk file when captured in AVI format and 6.5GB when captured in DV format. Why the difference in size - is one really better than the other? :shock: Many Thanks
THoff

Post by THoff »

Actually, DV video gets stored in AVI files. AVI is a container format that can contain audio and video streams that may or may not be compressed using codecs (encoders/decoders).

If you capture to AVI without using a codec, then the video and audio get stored in their uncompressed form, which explains the huge file you wound up with. If you compress using DV instead, the file winds up being much smaller (~13GB/hour).

If your video source supplies DV, there is no advantage to using uncompressed AVI -- you would essentially take the DV-compressed video, decompress it, and store that to disk. The video in the uncompressed AVI file and the DV-compressed AVI file should be identical.
ruggy1
Posts: 287
Joined: Sat Dec 11, 2004 5:51 am
Location: Sydney, OZ

Post by ruggy1 »

Thanks very much, I will make sure that the capture format is DV from now on.
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