Jump to content
Andrew Reid

Blackmagic Pocket Cinema Camera 4K gets BRAW in extensive FFPGA hardware update delivered via software

Recommended Posts

4 minutes ago, Emanuel said:

What compression ratio would you recommend in order to a 4K DCP with no need of VFX? 

4:1 is usually fine, and of course less is better. :) But I'd probably use VBR HQ for constant quality.

Share this post


Link to post
Share on other sites
EOSHD Pro Color for Sony cameras EOSHD Pro LOG for Sony CamerasEOSHD C-LOG and Film Profiles for All Canon DSLRs
45 minutes ago, cpc said:

4:1 is usually fine, and of course less is better. :) But I'd probably use VBR HQ for constant quality.

If we shoot CinemaDNG lossless, how many minutes length we can expect as average going with VBR HQ for archive @ post?

If we shoot lossy 4:1 CinemaDNG, would there be any chance to still save space in disk without losing 4K DCP output in mind? If so, what slimraw route?

Share this post


Link to post
Share on other sites
3 hours ago, Emanuel said:

If we shoot CinemaDNG lossless, how many minutes length we can expect as average going with VBR HQ for archive @ post?

If we shoot lossy 4:1 CinemaDNG, would there be any chance to still save space in disk without losing 4K DCP output in mind? If so, what slimraw route?

It depends; variable bit rate means size will vary with image complexity. It is usually (but not always) between 3:1 and 4:1, might be around 600GB for a couple of hours of 4K.

I wouldn't bother shrinking a 4:1 source any further, but if you really have the inclination, you can try 5:1 or 7:1 on top of it, which will shave off ~20% and ~40% respectively. Ofc, always test and judge results yourself.

Share this post


Link to post
Share on other sites
On 3/18/2019 at 12:10 AM, cpc said:

It depends; variable bit rate means size will vary with image complexity. It is usually (but not always) between 3:1 and 4:1, might be around 600GB for a couple of hours of 4K.

I wouldn't bother shrinking a 4:1 source any further, but if you really have the inclination, you can try 5:1 or 7:1 on top of it, which will shave off ~20% and ~40% respectively. Ofc, always test and judge results yourself.

3.1 is (was) 64m /500GB (4K Dci 24p)...2 hours pre-braw on 500GB has never been a possibility in 4K

bmpcc4k.png

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


×
×
  • Create New...