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Joined: 10/1/2013(UTC) Posts: 195  Location: Bovalino (Italy) Thanks: 86 times
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Good evening everyone. I'm doing some tests with Instant Replay to get familiar with the system. While I was doing a live stream generated by Vmix some replays that showed slowdowns and sudden accelerations, as well as a still image. What could be the problem? Here is the link to a replay and my pc configuration. Thank you BX80662I76700K Box Processor Intel Core I7-6700K - I7-6700k cpu @ 4.00ghz Asus Z170-A Intel Motherboard, DDR4 1151 Asus GeForce GTX 950 STRIX graphics card, 2GB GDDR5, DC2OC Kingston HyperX Fury 16GB Memory Kit, 2x8 GB, 2133 MHz, DDR4, ECC CL14 DIMM Samsung 850 EVO SSD 250GB, 2.5 "SATA III 6 Gbit / s, 256-bit AES windows 8.1 operating system
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Rank: Advanced Member
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Joined: 10/1/2013(UTC) Posts: 195 Location: Bovalino (Italy) Thanks: 86 times
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Another question.
Use
ASUS GPU Tweak II brings problems or is recommended?
Thanks again
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Rank: Advanced Member
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Joined: 10/13/2012(UTC) Posts: 1,162  Location: Melbourne Thanks: 220 times
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It looks like issues getting the footage off the hard drive. The advice is to run replays off a separate disk, not your system disk. The PC specs are fine. There may also be another process happening at the same time on your PC in the background. One other issue you have is that you have an interlaced image. When you setup your input make certain that you have turned de-interlacing on. This won't affect the speed issue however.
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 1 user thanked ask for this useful post.
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Rank: Administration
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Joined: 1/13/2010(UTC) Posts: 5,211 Location: Gold Coast, Australia Was thanked: 4301 time(s) in 1523 post(s)
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Hi,
Make sure the latest vMix 18 is installed and also when adding the camera that you select the correct interlaced frame rate there
and also in your Replay session.
The interlaced lines show that p frames rates have been selected instead.
Regards,
Martin
vMix
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1 user thanked admin for this useful post.
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Rank: Newbie
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Joined: 6/14/2017(UTC) Posts: 3  Location: Sweden
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Were a Swedish productioncompany using vMix every week. We also experienced this "bug" a few times. Last weekend we got the same result on TWO PCs and one of them we normally use only for Replays. It automatically plays in slowmo - suddenly stops - plays 200% - pauses etc. Couldnt get it to work at all sadly. We now came home from production tour and reconnected the same gear - suddenly it works.... We really need to know whats causing this. Links to really bad replays (every single replay looked like this from BOTH computers IE catastroph for us..): We use NDI to get the cameras to the "replay-machine" and send it back the same way. I figured it was something with NDI that casued it but when i tried replays on the main PC i got the same bad result. /Gunnar Petersen, StreamTeam Sweden
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Rank: Newbie
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Joined: 12/14/2017(UTC)
Posts: 3
Location: Germany
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like GUNPET I got the same issue (also streaming Football).
It worked fine all the last 2 month when I use the trial version for testing. After I bought the 4K licence I encountered this issue.
On my machine is nothing else running than VMix 21.0.56 (no AntiVirus, no other programs)
It's an Intel NUC i7 8th generation with 32 GB RAM and a WD SSD 512GB Black.
For the replay I use a WD Mybook with 20GB connected to the USB 3C port.
I already updated all drivers, reset all USB connections and re-installed the USB drivers, etc.
I found out that it works nearly fine in the beginning of the stream, but it is getting worser and worser time goes on.
Next sunday we will have our last stream for a longer time and if it won't work I will install the whole system from scratch.
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Rank: Newbie
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Joined: 12/14/2017(UTC)
Posts: 3
Location: Germany
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I will not say I have a solution but I got it work again.
As many times with computer problems you can't remember what you finally did.
Here are the things I did:
- all USB devices removed (with USBView)
- all USB drivers from device manager removed
- update to the latest graphics card drivers
- Windows 10 update (it finds 1803)
- VMix update to 21.0.0.56 installed
I'm not shure if one of these things really helps.
But two things might be the possible solution:
- running chkdsk /f /r (even it didn't tell me about problems)
- and finally --- removing an external USB hub
Rebooted and reinstalled all VMix camera inputs (they are gone due to removing the UISB drivers and devices with USBView).
It seems nothing changed. But shutting down the computer, sleep one nicht and switched it on, it works like before.
I ran it more than 8 hours with replay recording and tried replays every now and than.
Render frame time was always between 0 and 3 ms. Dropping frames over 8 hours - 0 to 3 on the inputs, 16 on the replay, 0 on the output
In another post I read that the log file of the replay can show you the problem. You will find it in the replay directory.
There it shows the entries:
-SourceTooSlow: 0
-SourceTooFast: 0
If source is too slow or too fast your source settings does not fit with the replay settings.
In my case the settings were ok, but however it shows a SourceTooSlow value of >20000.
Hope this could help some of you and worked fine for me in the future.
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