The amount of available bandwidth will not only impact the number of streams that can be transcoded on a machine, but also the speed of data upload/download which needs to be fast so that live video streaming applications can receive transcoded results as soon as possible.
The amount of bandwidth required for a stream will depend on the bitrate of the source stream and the bitrate of the output renditions. The download bandwidth required for a single stream can be roughly estimated as the bitrate of the source stream. The upload bandwidth required for a single stream can be roughly estimated as the sum of the bitrates of each of the output renditions for the stream. As a result, the total number of streams that can be transcoded given a certain amount of available of bandwidth will vary.
While there is not a strict bandwidth requirement for the Livepeer network, past testing has demonstrated that 1G upload/download bandwidth is a good starting point if possible. If you do not have access to this amount of bandwidth you will still be able to transcode on the network, but you will have a lower ceiling on the number of streams you will be able to handle.
Upload/download bandwidth available can be tested with tools such as:
- By default the tool will run a bandwidth test against the closest public server, but there is also an option to run the test against a specified public server
- Note: The results of this test also depend on the available bandwidth on the server used
- This tool can be run on client and server machines that you have access to
- If you have access to a machine with good bandwidth availability in a region that you expect/want to receive streams from, then this tool will likely be more useful than speedtest