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Newbie Q: Video/Audio quality when rendering ahead of time
Rank: Newbie
Groups: Registered
Joined: 3/20/2021(UTC) Posts: 1 Location: Michigan
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I'm a pastor just starting out with vMix for my congregation, to stream to our Youtube channel (instead of Zoom). I've figured out how to use VMix and stream to Youtube. My question is about quality. I'm using a newish Dell XPS laptop (newest i5, 16gig memory) but which does not have separate video processor. 1) Will my streaming quality be degraded by my lack of computer oomph? 2) My choir has sent me prerecorded high quality audio/video files from a studio they recorded in. I'd like to prerecord my introductions and preaching, and add in their pieces, and RECORD this all ahead of time, and then stream to the Youtube Live channel at a future time. (In other words, I'd like to render the final product ahead of time, and then stream it.) Is vMix the wrong software to create the video file with? I suppose I"m asking whether I can use it to render -- instead of some kind of Movie Maker software-- the final file, and it doesn't have to be in real time. So if I do use vMix, will I get degraded quality in the final result because it's trying to render on the fly and my system isn't up to that?
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Rank: Advanced Member
Groups: Registered
Joined: 10/31/2020(UTC) Posts: 147 Thanks: 2 times Was thanked: 28 time(s) in 28 post(s)
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Video quality is mostly determined by codec and bitrate. Just keep increasing the bitrate until you get a video quality that you are happy with. Increasing the bitrate doesn't normally use more CPU, it just makes bigger files. If you're using h.264 as your codec (listed as MP4 in the recording setup screen. I believe it's the default), 20 megabits/s should give fantastic results, at reasonable (but not small) file sizes. Of course, test, test, test! You can upload your videos to YouTube (or live stream), but keep them private so you can judge the quality without anyone else seeing the video/stream.
Just curious, why would you want to "live stream" prerecorded videos? I think YouTube Premieres would be a better fit.
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Newbie Q: Video/Audio quality when rendering ahead of time
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