Space Requirements for DV

[MikeD2k3]

I'm trying to find a figure for how much hard drive space DV takes straight off a DV camera. I remember a figure of 1GB for every 20 minutes. Is this correct?

Thanks
MikeD

 

[oldfart]

13 Gig for 1 Hr of full quality 720 x 480 video.

 

[MikeD2k3]

thx

 

[cmdrdredd]

do what I did...go get a WD SE 200GB 8MB cache HD from bestbuy with the awesome rebate. Then never worry again about space

they always have deals like this around

 

[rubix]

what rebate? how much was the final price after the rebate and taxes? i really need a new hd.

i don't know anything about a dv camera, but for a ntsc dv signal it's like this:
640 x 480 x 29.97 x 3 x 60 = 1657221120 bytes = 1.54GB

640 x 480 = ntsc tv resolution
29.97 = ntsc tv refresh rate
3 = 24bit color (24bits/8 = 3 bytes)
60 = 1 minute (60 seconds)

so 1 hour of dv signal, without sound, is 92.4GB

 

[oldfart]

What are you calling "dv"? DV is Digital Video as in DV camcorder. If you are doing analog capture, the sizes are bigger and you typically use a compressor such as Huffy or Mjpeg during capture to keep the file sizes reasonable.

DV = 720 x 480 and is 13 Gig for 1 Hr at full quality.

 

[MikeD2k3]

When I said DV I meant capturing raw off a DV camcorder. The 13GB/hr is just what I needed!

 

[Pauli]

Technically, DV is not a raw format, but is compressed using a DV codec. It typically averages about 4:1 or 5:1 compression of the raw video.

 

[rbV5]

Technically, DV is not a raw format, but is compressed using a DV codec. It typically averages about 4:1 or 5:1 compression of the raw video.

Yup (which is of course right where Old Fart says concerning filesize), and also technically, you don't capture DV either, you're basically just copying it from your Cam to your HD, like moving a file across drives...perfect copy.

 

[oldfart]

Yeah, DV capture (transfer) is SOOOOOO much nicer than analog capture!

 

[rbV5]

Yeah, DV capture (transfer) is SOOOOOO much nicer than analog capture!

You know (a bit off-topic), ATSC transport streams are digital and work the same way. The streams I "capture" from my HDTV card are exact duplicate copies of the broadcast at up to 1080i resolution (1920x1080 interlaced) perfect High-definition copies (ac3 audio too) Easily converted to a true MPEG-2 file, and encoded using the usual tools. I love working with digital files.