Archived posting to the Leica Users Group, 2001/02/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]DV is already compressed to come up with the 25 mb/sec (megabits) data rate. Its something like 3.3x. Lots of the compression happens in the digitization stage. Regular DV throws away some of the color data during sampling compared to other techniques or even DVCPRO/50 which is a 50 mb rate but same compression ratio. As for data storage for editing. We run two digital video editing workstations capable of "lossless" storage. State of the art for online editing a year ago. They share a 360 gigabyte disk array. That's really not big enough for what we do. The workstations each have dual 550 mhz Pentium IIIs and run Discreet Logic software under Windows NT. We also have an Avid on a 300 mhz Mac but the quality is much lower than our current systems. Mike D - ----- Original Message ----- From: "Austin Franklin" <austin@darkroom.com> To: <leica-users@mejac.palo-alto.ca.us> Sent: Thursday, February 15, 2001 9:28 AM Subject: RE: [Leica] WKs 7,8 Includes picture of new film camera fromFrance > > > If it did handle it, it would be pretty slow and costly > > (you would need 10 or > > > more 72G disks at least to do any decent capture/editing) I > > would guess. > > > > Guess I was off by an order of magnitude then... ;) > > I'm just starting to get into DV capture and editing...and it is surprising > me how much data there is. It's 14G for a hour of DV... > > The data is actually 25M bytes/sec of raw DV data...they get a 5x > compression, so it ends up being 5M bytes/sec...but still, that's a lot of > data over time. > > Just FYI, on my dual Pentium 733 w/ 512M memory, it takes almost an hour to > MPEG 2 encode 3 minutes of video! It reduces it to 131M bytes though ;-/ > >