• DaVinci Resolve

  DPX file size

  Posted by Andrew Sableton on May 3, 2013 at 10:39 pm

  Hi all,

  I have never worked with DPX at all but might be needing to soon. I’ve done some googling but have not been able to find either a calculator or chart showing DPX file sizes. Any pointers?

  Thx
  AS

  Joseph Owens replied 13 years ago 5 Members · 4 Replies
• 4 Replies

• 

  Andi Winter

  May 3, 2013 at 11:12 pm

  by heart i would say about 8mb per frame (hd). but if you have davinci, just render in dpx with whatever specs your project has and know it for sure…
• 

  Oyvind Stiauren

  May 4, 2013 at 4:05 am

  It’s quite easy calculating it yourself:

  H * W * No. channels / 8 * bits per channel / 1024 / 1024 = MB per frame

  So for a DPX file in HD (1920×1080) with 3 channels (RGB) in 10 bits you’ll have:
  1920*1080*3/8*10/1024/1024=7.42 MB

  —
  Oyvind Stiauren
  Post production supervisor, Colorist
  Terminal

  Mexico City
• 

  Rohit Gupta

  May 4, 2013 at 2:35 pm

  For 10-bit DPX you lose 2 bits per pixel since 30 bits are stored in 32 bits. So size is 1920*1080*4+8192, about 8.x MB.
• 

  Joseph Owens

  May 6, 2013 at 3:07 pm

  This is a good number to work with (8 MB/frame).

  Think in terms of 10 or 11x ProRes, or about 11 GB/minute for 1080p23.98 for example.

  jPo

  “I always pass on free advice — its never of any use to me” Oscar Wilde.

Reply to this Discussion! Login or Sign Up