Another important point that came up after a customer visit yesterday. In an instant replay system it should be possible to play backwards. This is impossible at the moment, we tried different things like "SetRate = -1" but could not get it to work. A "PlayBack" shortcut should also be defined and to complete the functionality "PlayBackSpeed" will show slow-motion backwards. With external controllers later on it will be fun to browse back and forth through the recorded material by turning the jog wheel. In sports productions of all kind this will be a nice additional feature.

Regards
Karsten

+1 on Play backwards

That would be "the" occasion I would want the camera views in sync and be able to cycle through each view forwards and backwards on a controversial call...

The other 95% of the time, though, I would prefer each view to be "independent" and start at the "in" point whenever that view is selected.



Ice

Hi Guys,

I am currently working on performance targets for Instant Replay and would be curious about the following:

* What is the minimum number of cameras you need for instant replay?
* What CPU do you currently use and are you planning on upgrading in the near future?
* What resolution are the cameras typically set to? 1080i or 720p?

Thanks,

Martin
vMix

Hi,
My minimum for replays is 4 cameras (with sync) but would prefer 6 if possible.
I am building a new rig specifically to handle six to 8 inputs (two quad cards) based on ASUS X99-E WS with i7-5930K processor and SSD drives in Raid 0. This machine will primarily be for sport events with replays.
I do everything at 1080i 59.94 or 29.97

Maxi

* We use 6 cameras in our hockey production: 1x wide shot, 1x zoom, 2x behind the goals and 2x above the goals. It would be great to use all 6 inputs for replays on one machine.
* we have to PCs with a i7 4930K
* currently we rather use 720p, because fast motion looks very bad with blend deinterlacing on the current video delay system, but the broadcast/recording standard should be 1080i. 3 of the 6 cameras we use are not ours and we only get 1080i from those cameras. the new system needs to have bob (or something similar) deinterlaing on all replay inputs.

currently newtek has two versions of their "3play" replay system. one with 4 inputs and one with 8 inputs (1080i), I think it would be really impressive and a good selling point if vmix would be able to support up to 6x 1080i input. I think that this is kind of a sweetspot for a well produced sports prodcution.

Thanks Martin, I really appreciate your work ethic and that you listen to your customers.

In our productions (and most productions of our customers) we have following situation:
- minimum number of cameras for instant replay: 2
- wanted number of cameras for instant replay: at least 4 (better 6)
- CPU used at the moment: at least i7 4790 or XEON E5 1620 (workstation), this will also be minimum level in the future
- typical resolution: depends on demand of the sports league, in most cases 1080i (even though 720p would be better sometimes)

Regards
Karsten

@ admin

Any minimum specs with regards to RAM and/or Hard Drives (SSD's were recommended earlier)?


Ice

Would you say a USB 3.0 external SSD could do it? Or is it hampered by CPU overhead by USB protocol?
I guess thunderbolt SSD would work fine.

You can preview the live cameras just as you would right now.
But as far as playback of replay footage goes, there will be two inputs Replay A and Replay B
and you can select a single camera angle for each, with toggle buttons to change them on the fly.

But a maximum of two replay angles can be viewed simultaneously at any time.
This is mainly for performance reasons.

Will it be possible to automatically play one camera angle after another from the same situation? Something like, marking the good camera angles (maybe 2 out 4 angles) and play them automatically from desired in and out points with a specific speed?

Or would I have to create a highlight clip of every camera angle and add them manually to the playlist?