Even the temporary file is optional. Ffmpeg supports a number of network protocols. For instance, you could read from one port and write to another with ff

Even the temporary file is optional. Ffmpeg supports a number of network protocols. For instance, you could read from one port and write to another with ffmpeg -f webm -i tcp://[::]:55601?listen -c copy -f webm tcp://[::]:55602?listen There's also UDP, SFTP, and more convenient protocols such as SRT or the long-in-the-tooth RTMP. I expect it will eventually add WHIP/WHEP as well.