Firewire bandwidth


	Cow Forums : MOTU V4HD VIEW POSTS • ADD A NEW POST • SEARCH • CHANGE FORUM

Respond to this post • Return to posts index • Read entire thread

Firewire bandwidth
by Kai Nagel on Jul 22, 2009 at 9:56:58 pm

Hi,

I've a question about the V4HD bandwidth usage. The Firewire port offers a maximum of 800 MBit/s. If I calculated right a 10Bit 1080i30 video needs a bitrate of about 1250 MBit/s. We'll have to add the audio datarate to this value.

It is obvious that the V4HD uses some sort of compression before sending the data over the bus. Prores doesn't seem to be supported in hardware. So does anyone have an idea what is going over the Firewire bus? How hard is the compression?

One possibility would be, that everything is converted to DVCProHD, sent over the bus and then converted to Prores on the Mac. But we would loose the full raster then.

Does anyone know?

Thx

Kai Nagel

Respond to this post • Return to posts index • Read entire thread

Current Message Thread:

Firewire bandwidth by Kai Nagel on Jul 22, 2009 at 9:56:58 pm
- Re: Firewire bandwidth by Nils Abel on Jul 24, 2009 at 1:01:08 pm

Related Tags:
Firewire

Note: If you are a registered user please click here to login before posting.

Your post will not be accepted if your name and email address are not registered in our database. Click here if you do not have an account.

Name

E-Mail Address

Subject

E-Mail me when someone responds

Just This Message

Entire Thread

None

Message:

Note: The following are HTML characters and may cause parts of your post to disappear if not used correctly: < > &
To include any portion of the post in your response, highlight the desired text and hit the "Q" key. Read more...

Add your message signature

Note: By clicking "Post Direct" button above, you are agreeing to the Creative Cow's Code of Conduct.