Framerates in Picture In Picture on Pearl Mini

Pearl Mini General
1

Hi,

I am considering buying a Pearl Mini, but would want to double-check if it will work for our setup:

  1. In an typical ideal application I would want to have two HD video inputs inputs at 60 fps, one from camera and one from a PC, mixed as PIP, without switching between the (camera always as the main picture and the feed from PC in the small picture). The PC would need to be connected through HDMI, for the camera I have choice. Will Pearl Mini handle this without dropping frames? And if not how much down in resolution I need to go in order to maintain 60 fps mix. Does it depend on the camera connection (HDMI\USB\RTSP)?

  2. Are both audio sources recorded in the PIP mix or just the one chosen at the time of the recording?

  3. Will Pearl Mini refuse video input with fps above 60fps (e.g. video feed from PC over HMDI at 120fps) or will it downscale it to 60fps?

Thanks in advance!

M

2

Is the goal to encode stream/record in 60fps?
For much of this it is important to keep in mind FPS vs Hz for the HDMI signal, 60hz is the normal standard for just about all HDMI sources.

  1. Yes, no problem with the mix. If the goal is 60fps you would want to use HDMI or SDI from the camera.

  2. They can be, you can choose one or more audio inputs on the layout, the 2 audio sources would be blended together.

  3. If the HDMI signal is 60Hz, that is all Pearl cares about, if a video playing on the PC is running at 120fps, and it does not change the 60Hz output signal, no problem. If the HDMI output is 120Hz, that would be a different story and Pearl Mini would not support it at 1080p.

3

Hi,
Thanks for the answer. Yes, the goal is to record at 60 fps without loosing frames (too much) in each stream. Indeed, I meant 60 fps 1080p from the camera and 60 hz 1080p from PC over HDMI. So do I get it right that Pearl Mini would give a PIP mix recorded at 60 fps without dropping frames in either signal?

If the HDMI output is 120Hz, that would be a different story and Pearl Mini would not support it at 1080p.

Just to clarify: does it mean there are resolutions that Pearl Mini would accept from PC at 120Hz?

Thanks,

M

4

If there is only 1 encoding channel configured on the Pearl Mini, it should run OK at 60fps encoding. Both inputs from the 60Hz HDMI signals can be placed on a PiP layout and would be encoded at 60fps.
Officially the Peal does not support more than a 60Hz input, however it really comes down to a matter of signal timings/pixel clocks. In Theory a lower resolution at 120Hz might be captured, but we do not test against that and do not recommend trying.
Even if it did, it would not encode at 120fps, only at 60fps at best.