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billh2020  
#1 Posted : Saturday, February 17, 2018 3:24:12 PM(UTC)
billh2020

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Hello -

I have looked through the documentation but do not see any best practices related to video input formats and frame rates. With our Tricaster we would use their built-in utility to convert videos to mp2 format and I'm curious if we need to follow a similar practice with Vmix? I have an upcoming production with a 1080p24 MP4 video in a project set at 1080p29.97p for cameras and MPEG-2 recordings with stream encoding at 854x480 30p.

What is the best configuration for quality and performance (i.e. cpu and graphics load)? Will I encounter issues with the variety of frame rates?

Thanks for your advice,

Bill
Intel Core i7 3770 @ 3.4Ghz
Nvidia GTX 1060 6GB Graphics
ask  
#2 Posted : Saturday, February 17, 2018 6:48:25 PM(UTC)
ask

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Best practice is to have the same resolution and frame rate set right throughout your chain, however the advantage of vMix over other solutions is that you can indeed mix inputs. You will need to experiment with them to see what impacts negatively on your system but vMix will rescale for you.
thanks 1 user thanked ask for this useful post.
Argo82 on 3/1/2018(UTC)
Argo82  
#3 Posted : Thursday, March 1, 2018 9:55:59 PM(UTC)
Argo82

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I thought I would add to this thread as my question relates to this as well.

I understand the reasoning behind having a 29.97p and a 30p frame rate, however I'm not too sure if I understand the consequences of using both. I recently watched a vMix Fun Time Live Show where Martin explained that even though a camera may say "30p", other than a web cam or IP camera, it is probably "29.97p". We use Sony EX and other broadcast cameras for our productions. Since learning this information, I have set my preset and all inputs to 29.97p to match the frame rate in the cameras. As we do not use any web cams or IP cameras, I assume we do not have any true "30p" inputs. The issue comes to my streaming settings. The specs provided by my CDN are 1280x720 at 30 frames per second. Should I change this to 29.97 frames, or leave this at 30? Is this another case of 30p actually being 29.97p? Just a bit confused at this point as to the worst case scenario and/or best settings to use for streaming, recording and keeping the frame rate consistent.

Many Thanks
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