shithub: rtmp

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patches to: sigrid on 9gridchan or oftc/#cat-v

Last commit

a73d1bc5 – Sigrid authored on 2021/08/21 19:18
readme: update for mixfs

About

# rtmp

RTMP streaming for Plan 9.  Tested with Twitch and PeerTube.  Can
stream to several RTMP urls at the same time.

## Usage (until I write a manpage)

	video/hj264 -f 25 /dev/screen | video/rtmp -a ... rtmp://.... rtmp://...

For how to use `rtmp` with Twitch, refer to the documentation they
provide.  All you need is the correct RTMP URL.  Preferably of a
server that is close to you, for lower latency, see [the list of
ingest endpoints](https://stream.twitch.tv/ingests).

To stream with audio from the microphone, make sure it works, you can
test it with [pitch](https://git.sr.ht/~ft/pitch).  Make sure
[audio/aacenc](https://git.sr.ht/~ft/aacenc) is installed.  Then run
this (change according to your preferences):

	video/hj264 -f 25 /dev/screen | video/rtmp -a <{audio/aacenc -b </dev/audio} rtmp://....

Twitch does not require an audio stream to be present.  PeerTube seems
to require it, so in case you don't want to stream audio to PeerTube,
it's possible to use silence by passing `/dev/zero` instead of
`/dev/audio`.

For audio loopback you can do the following (make sure you have latest 9front):

	audio/mixfs -s mixfs -m /n/mixfs
	# this already binds on top of /dev/audio in that window

	# in another window, provide silence so there are _always_ samples available for aacenc
	mount /srv/mixfs /n/mixfs
	dd -bs 8192 -if /dev/zero -of /n/mixfs/audio

	# streaming, another window
	mount /srv/mixfs /n/mixfs
	video/hj264 -f 30 /dev/screen | video/rtmp -a <{audio/aacenc -b < /n/mixfs/audio} $url

You can also mix in audio from the microphone by mounting mixfs and
writing PCM data from your phone to `/n/mixfs/audio`.