Just look at the bit rate of what you are streaming and multiply it by 3 then add a little extra for overhead.
I have 35mbps upload from the ISP, and limit each stream to 8mbps. This covers direct streaming all my 1080p content and a 4K transcode as needed.
I don't have a jellyfin server but 1MB/s (8mbps) for each person watching 1080p (3.6Gb per hour of content for each file) seems reasonable. ~3MB/s (24mbps) upload and as much download should work.
1mbps is awfully low for 1080. Or did you mean megabyte rather than megabit?
I had a hunch that writing the actual Upload/download speed tather than mbps was probably wrong. My bad, my internet provider lingo is rusted.
Gotcha. Typically lowercase b=bit and uppercase B=Byte, but it's hard to tell what people mean sometimes, especially in casual posts.
Come to think of it, I messed up the capitalization too. Should be a capital M for mega.
Are you transcoding?
4mbit per client for 1080 is generally a workable minimum for the average casual watcher if you have H265 compatible clients (and a decent encoder, like a modern intel CPU for example), 6 - 8mbit per client if its H264 only.
Remember that the bitrate to quality curve for live transcoding isn't as good as a slow, non-real-time encode done the brute force way on a CPU. so if you have a few videos that look great at 4mbit, dont assume your own transcodes will look quite that nice, you're using a GPU to get it done as quickly as possible, with acceptable quality, not as slowly and carefully as possible for the best compression.
My family is very satisfied with 6 mbit/s per stream. Some HEVC, most H264. They see it as high quality. 3 Streams would be 18 to 20 Mbit/s
How expensive is internet? If its cheap go overkill and don't worry about it.
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