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Broadcast Frame Rates

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This thread has been created for end users to discuss the topic of PTZOptics potentially adding Broadcast Frame Rates to the cameras capabilities.


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Currently PTZOptics cameras only provide solid frame rates for the video outputs.


Please provide any thoughts or feelings on the potential addition of broadcast frame rates as a capability of the cameras.


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Hi Tom,


I have not heard of that issue yet... but with it being experimental I am sure there is certainly a chance of additional delay.


One suggestion I can make at the moment that may help improve performance is to temporarily test setting the IP outputs to 30 fps, or lower, rebooting the camera and re-testing the SDI output latency.


Either way I would love to hear some more details when you have the opportunity to fully test / trial the suggestion above.


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I just started using this firmware on our 20x-SDI and I'm noticing more delay also. I've also experienced an issue where I lose video signal and it goes black for a split second then comes back. I'm not sure if this is related to our new Thor Broadcast SDI to fiber converter, which also transmits rs-485 data over a single strand of single mode fiber or the firmware. 


I'm going to try and switch back to solid frame rate and see if the issue clears up (1080i 60)


FYI we are running at 1080i @ 59.94

Thanks for working on this feature update. Following

Hi Scott,


We have not heard of the issue as you have described... yet. 


You're the lucky first with this problem ;-)



If you could let us know if the solid frame rates showcase the same issue via your Thor SDI to Fiber Converter we would love to know.


That little Thor F-M1SDI-TX/RX looks like a pretty fantastic little box; the only thing of note is the HD-SDI limitation.


This should operate fine at the 1080i@59.94 as you've mentioned you're using but just wanted to bring it up as trying 1080i@29.97 may be worth testing along with the solid frame rates just to see how the system responds.


Every little bit of information helps us to try and resolve any potential issues when possible so any feedback is always appreciated.



Hopefully we can get to the bottom of this miscommunication between products in a timely fashion for you.




Hi Matthew, After some time troubleshooting this, it appears to be an issue with the Thor converter. I tried solid frame rates and the issue persisted. Even tried another PTZOptics camera (30x-SDI), different bnc jumper and finally a different fiber converter. We kept the Thor just for rs-485 data on 1 fiber stand and added a Blackmagic SDI to fiber on another fiber stand just for video and that worked without any drop outs. I have reached out to Thor to see if I can figure out what’s going on with this. I suspect we had some data drop outs as well since the controller would “stick” ex: keep zooming or pan/tilt after we had stopped on the controller.

Hi Scott,


Thank you very much for following up here with this updated information.


Sorry to hear about the troubles with the Thor product, hopefully it's just a single problematic unit.


The data drop outs sound spot on if you saw that type of irregular behavior with hardwired control; sounds identical to when there's data drops with the IP version of our controller.


If there is anything we can do to be of assistance please don;t hesitate to reach back out here or to our support team at support@ptzoptics.com

Just to update this...replacement converter from Thor received and it works without issue. The replacement unit is the ST fiber unit so I had to use LC to ST jumpers and barrels. No video drops and control is much better now. Made sure it was set to parallel in the communication setup menu as well.

Hi Scott,


Thank you very much for the update and super glad to hear that everything is working as expected now.


If there's anything else we can help with don;t hesitate to come back :-)

Just to be clear, has this new "broadcast frame rate" firmware been moved from beta and thus is the firmware you get when you use https://ptzoptics.com/firmware-finder/

Hi Dain,


This beta feature will never exit beta for our G2 platform due to limitations in hardware that we are unable to correct.


This being said the feature does not cause complications or loss of any features for standard users not wanting to take advantage of broadcast frame rates and as such it is available for download for the following models via the firmware finder.


12X-SDI-XX-G2 (PoE)

20X-SDI-XX-G2 (PoE)

30X-SDI-XX-G2


12X-NDI-XX

20X-NDI-XX

30X-NDI-XX


If you have any additional questions please let us know and we'll respond as soon as possible.

Thanks for taking the time to help. 

So sort-of a matter of semantics... the firmware that includes broadcast rates is now standard issue, however, the new feature of broadcast frame-rates is a beta feature.

Matthew,


I know this is an old thread, but I finally got a chance to do some more troubleshooting last night on the video delay issue we're seeing from the 20X-SDI.  I needed a way to prove that the Blackmagic capture card and vMix weren't causing the problem, so I looped four different manufacturer's cameras through a Decimator DMON-6S MultiViewer and then just captured it's output (quad split.)


While still running the original version of the beta firmware (that made broadcast frame rates available), there is a delay of 133 ms from the 20X when the output is set to 1080p30.

Video of delay at 1080p30


I then installed the most recent version of the firmware and changed the camera's output back to 1080p59.94.  The delay is still there.

Video of delay at 1080p59.94


To workaround this issue for now, I've manually applied delays to vMix, but this puts the video displayed in the back of the room out of sync with the audio.  (Can't delay the audio any more without impacting the rest of the room.)  It's just too bad there isn't some way to eliminate this 8 frame delay (at 59.94) that we're getting from the 20X.

Video after delay added in vMix to synchronize all cameras


-------------------------------------


On a slightly different note, the newest firmware still does not allow the 20X at 59.94 to work with the Blackmagic capture card.  I know you've said this is an 'A' vs. 'B' issue, but it seems there is more to it than just that.  Two of the four cameras I'm using are outputting 1080p59.94 'A' and the Blackmagic card is not having any problems with them.  I also took the SDI output from the Decimater and switched it back and forth between 'A' to 'B' and had no issue capturing it with the Blackmagic card either.  There is something odd about the 20X's SDI output encoding that doesn't allow it to work with the Blackmagic capture card (at 1080p59.94), and based on this testing it seems to be more than just an 'A' or 'B' issue.


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Tom thanks for the update. I've been curious what the State of affairs are. I guess I'm going to need to wait till the next generation camera. Before I start using these in my installs. I can't afford the "gotchas."
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