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Is this the best setup for low latency and good quality?
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Our church became a new setup (SD to HD)
PC: i7 4570 with Geforce 1050ti + Magewell pro capture quad SDI card
We have 4 SDI camera's, because one camera has a fixed 720P50 output, I set the other 3 camera's to 1080P50.
There are also 2 desktop capture inputs (25fps)
The master frame rate is 1080P50
I am streaming to youtube with these 'Youtube live streaming' settings.
H264 1080p 6Mbps AAC 128kbps (we have 20Mb upload)
use hardware encoder enabled
FFMPEG
Profile: main
Level: 4.2
Preset: very fast
Aspect ratio/crop: original
Keyframe: 2 seconds
Threads: 4
Networkbuffer 20
Strict CBR and keyframe aligned disabled
Our projector is connected to the HDMI output of the 1050ti (Fullscreen).
Are these the best settings for a crisp youtube stream and also lowest latency on the projector?
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Joined: 8/21/2019(UTC) Posts: 67   Thanks: 7 times
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If you're not going higher than 6Mbps upload, you're better off with 720p50 or 1080p25.
The only other way to get higher quality with the same settings (resolution, framerate, bitrate) would be to upgrade your GPU to one with a newer, better hardware encoder.
The most cost effective way to do that would be to replace your 1050 with a 1660, 1660Ti, or 1650 Super (NOT a vanilla 1650). These cards are the least expensive way to upgrade from the NVENC version in the 10x0 series of cards like the one in your 1050 (the encoder in the Pascal generation of Nvidia cards) to the better encoder in the Turing generation of cards. The cards above are the only cards that offer the Turing encoder but don't feature RTX (ray tracing) which makes them more expensive.
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Rank: Advanced Member
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I will try 720P50, then I don't have to change my master frame rate, because 25P will increase the latency on our projector.
It takes about 12 hours before a streamed service is published by YouTube, because of the copyright scanning.
Would a 720P stream takes less time to be published?
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Rank: Advanced Member
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Joined: 8/21/2019(UTC) Posts: 67 Thanks: 7 times
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Originally Posted by: JW  I will try 720P50, then I don't have to change my master frame rate, because 25P will increase the latency on our projector.
It takes about 12 hours before a streamed service is published by YouTube, because of the copyright scanning.
Would a 720P stream takes less time to be published? I doubt it, but that sounds like an exceptionally long period. Usually my streams are available in a very short time, only to be hit later by a content ID match if there is one-- the video doesn't wait for the content ID scan to finish before becoming visible.
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