What is throughput required for uncompressed video streaming HD 1080i 8 bit 4:2:2 ?

[Matt Geier]

HI Terek,

The best thing for you do to in order to figure out a data rate for a video format would be to use something like the AJA Data Calculator. You can find it over on AJA’s website under downloads.

Another thing to do is start your streaming, and open the network monitor under your Applications > Utilities folder, and look at what the network is doing while streaming.

Of course these are super simple methods of figuring out “bandwidth” for the video……

I would encourage you to look at other responses here on the forums.
Having that many workstations streaming uncompressed video is going to be a hefty load on the network and on the storage. So make sure you’re looking at real time solutions, and not just “pure bandwidth” solutions. —- Real time is the key….Bandwidth just means you have the means to pass the data size required……not the means to “sustain” it in real time……especially with 10 clients doing it at once.

Best of luck!

Matt G.
Creative Consultant
Social Media Consultant
Technical Consultant

[Steve Modica]

A quick look at the Aja calculator says it’s about 125MB/sec. That’s too much for gigabit, so you’ll need 10Gb to each client. You need to pull 1.25GB/sec total.

The main problem is that each MB of data you pull over the wire needs to make it to the clients in roughly 8msec (and this includes the latency over the wire and any preprocessing that has to go on within the app like a filter).

So consider the difference between pulling 10 of those streams (needing 8msec/MB) and 50 Pro Res Streams (each requiring 45msec/MB). You could be dropping frames all over the place in the first case, but more than capable of handling the second case. It’s a huge difference and it’s a very common question for us.

Steve

Steve Modica
CTO, Small Tree Communications

[Bob Zelin]

There are several manufacturers that offer 10Gig NAS solutions.

These include –

Small Tree
Studio Network Solutions
Facilis
EditShare
Apace
Maxx Digital

Any of these will do uncompressed HD.

As per AJA Data Calc on my iPhone –
1080i30 8 bit YUV is 124.3 MB/sec
1080i30 8 bit RGBA is 248.6 MB/sec

you have not specified your application (is it After Effects ?).

Most people do not edit with uncompressed HD, and many applications
AVID Media Composer will not allow you edit uncompressed HD.
Have you looked at the difference between ProRes4444 and uncompressed HD ? It’s pretty hard to tell the difference. Many hi end cameras, like the incredible Arri Alexa, shoot native ProRes4444. I have never heard on complaint of someone saying “the Arri Alexa looks like crap, because it’s compressed HD”.

Bob Zelin

[Tarek Soliman]

Thank you Bob,
Do you mean that we should install on the client 10 Gb inteface card and the NAS storage should be provid througput not less than :
2486 MB /s or 2.5 GB/S ?

[Tarek Soliman]

Hi Matt,

Thanks for your advice , you correct we are looking for real workable solution to setup a studio and want to be sure that throughput of the storage , the bandwidth of network`s switches and workstations are enough to process 10 concurrent video streaming with right performance .
Best regards
T.soliman

[Tarek Soliman]

Hi Steve

Thank you for your comment ,but finally we need to agree on each component which should be delivered to insure that it is a workable solution , i.e.
1-we agreed that to install 10 Gb/s on workstation
2-The total amount of throughput of 10 workstation according to your calculation will be =1.25 GB/s which should be the minimum required throughput from the NAS storage.
Do you have another factors should be taken inconsideration for correct design, ? Please advise
Best regards

T.Soliman

[Steve Modica]

[Tarek Soliman] “Do you have another factors should be taken inconsideration for correct design, ? Please advise”

With latency factors, the primary issue is the storage and the configuration of the server. If you give one of our sales guys a call, they can walk through the specific requirements with you and come up with storage that can meet those requirements.

Steve

Steve Modica
CTO, Small Tree Communications

[Bob Zelin]

Tarek,

I am not going to answer your question. You have been given the names of the companies that make turnkey 10Gig solutions. there are also companies (like Facilis that make wonderful (more expensive) Fibre channel solutions. You have been given an overview of how this works. This is what is going to happen next. You are going to contact some or all of these companies. You will ultimately buy one of these solutions, and you will have exactly what you want. Here is what is not going to happen. No one here is going to tell you in detail how to build this from parts you order on the internet.

When you speak to a vendor, it is important to say “this is our application – we use (for example) AVID, FCP, Adobe, Autodesk, Assimilate, etc. etc. The vendor will be able to identify what you actually need, and will be able to give you a cost effective solution. So far, you have stated your bandwidth requirement, but you have never said (for example) “we need this solution for doing uncompressed Adobe After Effects”. WHAT IS YOUR APPLICATION ?

All of these companies are easy to find using google.

Bob Zelin