Please Ranking these.......

Teach me your ATEM's actual thing.

How about total delay input to output in these 4 cases.

1. no Genlocked Camera(SDI) and Computer(HDMI) ---> ATEM (internal framesync)
2. Genlocked Camera(SDI) and Computer(HDMI) ---> ATEM (Genlocked by SyncInput)
3. Genlocked Camera(SDI) only ---> ATEM (Genlocked by SyncInput)
4. Genlocked Camera(SDI -> Camera Converter) --> Optical cable
--> Studio Conveter(SDI) -> ATEM (Genlocked by SyncInput)


I want to know these result.......

Who can determine the ranking these about total in/out processing delay.

[Gary Adams]

Hello Jehun.

All four models of the ATEM switchers have the same delay characteristics, with one exception (noted below). If the ATEM is free running with respect to the input sources (cameras or computers), the total delay will be anywhere from one line to one frame. The closer the source vertical is following the ATEM, the frame synchronizer will delay to the next frame for seamless switching.

If a source is genlocked to the same reference feeding the ATEM, the delay for those sources will be one line. Sources like computers are probably not easily genlocked so will have the possibility of up to a frame of delay in this case as well.

The ATEM camera converter does not add any significant additional delay to this. If you were able to feed a separate genlock reference to these cameras they would fall into the one line of delay in the ATEM. Otherwise they would be free running with respect to the ATEM and could be delayed from one line to one frame as necessary.

The exception to this is the DVE (used for picture in picture) in the ATEM 1 and ATEM 2. When the DVE is active in the image, there will be an additional one frame delay to that part of the image. The Supersource in the ATEM 2 also falls into this category where images in the boxes will have the additional one frame of delay.

It is important to understand any time the image is scaled (resized) or retimed (using frame synchronization) additional delays are possible. For example some cameras and projectors have additional sizing or scaling processing which will add to overall delays in the program image.

It is always best to genlock as many sources as you can to keep the delay for those sources at a minimum.

Regards, Gary

Thank you Gray & BMD

Can we send PPT and every computer screen thru DeckLink SDI like HDMI connection??
Alternate expression....
Can we use DeckLink SDI output as general windows monitor?

Remember these numbers do NOT reflect the delay in the Multiview output, and the possible additional delay in the monitor displaying the multiview. This is one reason that people using the system my seem to believe that there is more delay

Sharyn

Can we send PPT and every computer screen thru DeckLink SDI like HDMI connection??
Alternate expression....
Can we use DeckLink SDI output as general windows monitor?

No, the DeckLink does not appear as a Monitor to Windows.