Blackmagic Forum

Hey friends - I have monitors that only accept 60hz (60fps) signals, but I want to stream at 30fps or 24 df.

So I am forced to set the switcher video standard to 60fps in the General tab of the Settings cogwheel menu. But I'd like to record or stream at a lower frame rate.

Is this possible? (without buying a converter of course)

I tried removing all the 60fps options in the streaming.xml file and that made the stream super weird and low bitrate.

You could try using the USB as the multiview, going into a laptop and setting up the monitor as a second screen to the laptop. Then place whatever software you use to view the feed (Quicktime Player for example) on that second screen. That way the ATEM won't know it's ending up on a 60hz screen and you can have your ATEM settings at whatever you like. If you already use a laptop via USB for software control then you can still get the video feed over the same cable and still have one spare for recording.

If you have to feed more than one monitor though then this probably won't be the solution you're after. One thing I found before I got a monitor that could accept 25p was that if I put an old Lilliput camera monitor in the way between the 50/60hz monitor and the ATEM (very old cheap SD one that I used to use on a Canon 550D) then it worked - I guess the HDMI out port on it could scale it out to 50/60hz. So if you have any old camera monitors lying around that you think are past their prime, try using them as a converter and see what happens.

Suggest getting a broadcast monitor that will accept any frame rate.

Best,

David

dsol1980 wrote:Hey friends - I have monitors that only accept 60hz (60fps) signals, but I want to stream at 30fps or 24 df.

So I am forced to set the switcher video standard to 60fps in the General tab of the Settings cogwheel menu. But I'd like to record or stream at a lower frame rate.

Is this possible? (without buying a converter of course)

I tried removing all the 60fps options in the streaming.xml file and that made the stream super weird and low bitrate.

dsol1980 wrote:Hey friends - I have monitors that only accept 60hz (60fps) signals, but I want to stream at 30fps or 24 df.

So I am forced to set the switcher video standard to 60fps in the General tab of the Settings cogwheel menu. But I'd like to record or stream at a lower frame rate.

Is this possible? (without buying a converter of course)

I tried removing all the 60fps options in the streaming.xml file and that made the stream super weird and low bitrate.

If you can't find a monitor that accepts 30fps inputs, then a BMD UpDownCross converter might be useful - it will let you run the Atem in 30p but convert the monitor output to 60p. (NB the UDC has some pretty major limitations - but 30p to 60p will work OK)

I don't think you can run the mixer at 60fps but stream at 30fps - but as others have said if you shift the streaming to OBS you may be able to convert there.