Hyperdeck network recording timecode for live replay

Does anyone know what timecode for Davinci live replay gets used when you use recordings on a network NAS instead of a Atem Mini iso ssd recording?

Does it use the time from the Hyperdeck that sends the recording to the NAS or does it use the camera timecode?
Just to make sure those recordings from different HyperDeck recordings on the NAS line up correctly.

[Gary Adams]

It you intend to use the ATEM Multiview in Resolve then the Hyperdecks need to record the ATEM timecode. No matter what all timecodes must match. If using an ATEM Mini Pro ISO and external Hyperdecks consider extracting the Timecode from the ATEM and feed the decks. I hope this helps.

Gary

Hello @Gary Adams
Thank you for your reply.
On the Cloud Store product page it says that Davinci replay will work with HyperDeck recordings.

The case we are looking into is 4 Hyperdecks (4 live cams), recording to a NAS.
According to the cloud store product page it should be possible to do live replay without any Atem involved but just using the files from a NAS.
So the question is, is this a mistake on the product page or how get the files synced from different HyperDeck recordings. It would be possible to daisy chain the 4 Hyperdecks but I don't know if this will do the trick.

If any Atem Mini Extreme iso is needed, then how do you record iso with Hyperdecks instead of a usb-c ssd?
We also would like to not involve a Mini Extreme as the program image quality is not on par with the "real" Atem's.

Is there any replay documentation available yet that shows best practice and what is possible in each configuration?

[Gary Adams]

There are so many variations on how to use Resolve Replay. At trade shows we sometimes show a larger ATEM with the UltraStudio 4K Mini providing fill and key to the Downstream keyer. This allows the Replay operator to fully control how it is operated. The keyer will override ATEM Program without the need to use any ATEM controls. This method (of many) also provides for a stinger from Resolve. The Ultrastudio 4K can be used with a Mini but does take up 2 inputs. If you don't want to use an ATEM at all you will still need some form of input/output capture. The Output would, of course be the replay video. The Input would be normally an ATEM Multiview but if not, one of the sources could be used as long as the timecode of the input exactly matches the recordings. If not using the Ultrastudio 4K Mini, the ATEM or switcher operator would manually switch or transition to the replay which is perfectly acceptable.

Hyperdecks recording to a NAS should work fine with Replay. The ATEM is not necessary based on my above description. It is still important that all Hyperdecks get exactly the same timecode. You could feed one of the hyperdecks to the Resolve capture input so that timecode matches the rest. The Replay POI depends on reading the timecode from the capture input and lines all the playbacks based on that. What is needed for replay depends upon what functinality you want to use. For full fill/key functionality you will need the Ultrastudio 4K Mini or the new Media Player when it is released. Otherwise replay can be manually controlled with one of our other input/output capture devices.

The most important thing to understand is the timecodes on the recorders (files) must match the source video to Resolve used to generate the POI. With the Ultrastudio 4K Mini, this is normally the ATEM Multiview but it could be one of the sources. With the ATEM Mini ISO, it would be the Multiview via webcam interface to Resolve. The output would be either Ultrastudio 4K Mini for fill/key, or something like Ultrastudio Monitor 3G if you want to switch the ATEM manually. I hope this helps.

Gary

Hello Gary

Thank you for your reply

It seems that recording to a non BM NAS does not work. Resolve does not see the files as growing live files. I found another Person who has the same problem on a QNAP but works for him on a BM cloud solution. We test on a Synology.
viewtopic.php?f=4&t=206819
So I need to fix that. Any tip?

I understand that Resolve needs a timecode so it knows where to jump when you dump a Replay.
I connected a HyperDeck (set timecode to Internal on the Hyperdeck) with a Decklink 4K Extereme card on the Resolve machine and configured Resolve tgo use the Decklink for capture.
I can see the video when beeing in the color page and choosing Resolve Live. So that connection should work.

In some demo videos there is a "Brodacast" Workspace shown. I don't have that in the Studio 19.6 Beta.
Has that changed lately in the beta?

But as writen before, the HyperDeck file on the NAS is not being recognized as a growing file and only imports to the time of the import. So I really need to know how to get Resolve to see it as a growning file to get further in testing and before I involve multiple HyperDecks in the test.

Help would be great!

[Gary Adams]

The Resolve beta versions were a bit fluid in the Replay section. The old "Broadcast" setting has been changed to "Mute Replay Hardware SDI Outputs". A bit more descriptive of what it does. This setting may be found in the Cut Page->Replay Controls (Icon at top)->Replay Handling (just a little below and left) Menu. This control handles the Ultrastudio 4K Mini and upcoming Media Player switching of the alpha channel and muting of video and audio for replay. I hope this helps.

I don't know why your NAS doesn't seem to be working. What file system is your NAS using please? Also do you see the .mcc file in the same directory associated with your recording? This file only appears during recording and would be deleted when stopped. Also, what exact Hyperdeck model are you using to record? And make sure it is on the latest firmware for that deck. Earlier firmware may not be compatible.

Gary

Hello Gary

Thank you for your reply

File system (probably Btrfs (Synology standard), but not sure) what should it be?
Yes, the .mcc file is there
HyperDeck 4K Pro with latest 8.4.1 firmware and internal ssd cache

Multiple people told me know that it will only work with a BM cloud NAS and did not work with QNAP and Synology versions for them but did with a BM one. I used a Synology one as I had one around for testing the feature.
I will do further testing. But the documentation mentioned in the Resolve 19 manual seems still missing.

Hi Gary. We are using the Extreme ISO SDI with a Samsung SSD on USB2, and sending the webcam multi view out to Resolve Replay on a new M4 mini for live input view.

When we mark a POI it seems to be anywhere from 2 to 6 seconds ahead of what I was seeing on screen during live input view. (ie, I hit POI as racers cross the finish line. When I hit RUN replay starts anywhere from 2 to 6 seconds ahead of the finish line. I am not using the preroll time buttons to change anything. In fact, they don't appear to have any effect.)

So, where in the myriad settings of the ATEM software control and Resolve Studio 19 can I check to make sure all our settings and connections are correct? As far as I can see everything was done strictly by the manual.

Thanks,

Rick

The Replay POI depends on reading the timecode from the capture input and lines all the playbacks based on that. /////
The most important thing to understand is the timecodes on the recorders (files) must match the source video to Resolve used to generate the POI. With the Ultrastudio 4K Mini, this is normally the ATEM Multiview but it could be one of the sources. With the ATEM Mini ISO, it would be the Multiview via webcam interface to Resolve. The output would be either Ultrastudio 4K Mini for fill/key, or something like Ultrastudio Monitor 3G if you want to switch the ATEM manually. I hope this helps.

Gary

[Gary Adams]

Hello Rick. I do see this and it has been reported and looked into. It happens on the SDI Extreme and at 59.94. 29.97 may not be an option for you temporarily as it works correctly at that rate.

Gary