SEselvan·Dec 3, 2024Submission
1 points · Open discussionvoc
voctomix
Python2016–2024
voc / voctomix
voctomix
Full-HD Software Live-Video-Mixer in python
5Distinct people
6Mentions
0Explicit recommenders
638GitHub stars
What to know before exploring
What it is
Full-HD Software Live-Video-Mixer in python
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year6 dated mentions
Observed mentions: 2016-04-29 01:13:56 UTC to 2024-12-03 03:56:25 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 2 | 1 | 1 |
What Hacker News says
6 sourcespossibly if you are interested in doing this sort of thing, you will be interested in doing it with free software. in that case:
the debian debconf video team has been doing this for something like 15 years without the iphones and ipads, and without a limit of 4 camera angles, with 100% free software, and supporting live streaming (with simultaneous recoding to various bit rates) as well as just recording. they can fix unfortunate choices of camera stream after the fact for the final archived videos, too
they document their setup at https://debconf-video-team.pages.debian.net/docs/index.html. the live video mixing software (to choose which camera angle to stream at any given time) is voctomix https://github.com/voc/voctomix which belongs to the ccc video operation center https://c3voc.de/
i don't actually know what they use to push the
Read the rest
rtmp video streams to the streaming server, but rtmp is very widely supported, since it's what twitch and youtube use for streaming video. obs studio can do this and is probably the most popular software for doing it; it's also 100% free software. https://www.digitalocean.com/community/tutorials/how-to-set-... says that you can also use ffmpeg directly
ffmpeg -re -i "Introducing App Platform by DigitalOcean-iom_nhYQIYk.mp4" -c:v copy -c:a aac -ar 44100 -ac 1 -f flv rtmp://localhost/live/stream
https://trac.ffmpeg.org/wiki/Capture/Webcam#Encodingexample1 suggests getting ffmpeg input from your webcam with
ffmpeg -f v4l2 -framerate 25 -video_size 640x480 -i /dev/video0
and i can successfully test my webcam with just
ffmpeg -i /dev/video0 -pix_fmt yuv420p -f sdl 'hi'
but i think that integrating an audio stream is a little more hassle if you want to try doing it manually with ffmpeg command lines (details in https://trac.ffmpeg.org/wiki/StreamingGuide and https://www.baeldung.com/linux/ffmpeg-webcam-stream-video). if you want a gui just use obs studio
Hi! You mean just pick up from the browser, then publish stream to 100k+ people? That's not too difficult...
If you're ok with introducing a little bit of latency, the easiest way forward is webrtc to rtmp conversion. You could easily introduce headless mixing capability on top of https://github.com/voc/voctomix . We hacked together a quick and really dirty web frontend in https://github.com/FOSDEM/infrastructure/tree/master/ansible . It does the job, so we never felt the urge to change it...
Scaling the stream to ∞ viewers is easy using only free and open source software.
Feel free to get in touch.
In Show HN: OBS-web – Control OBS from the browserHave a look at what we use at https://fosdem.org [0][1]. In terms of software, a crucial component is voctomix [2], using it as a headless video mixer. Another invaluable component is nginx-rtmp [3] for streaming.
We made a heavy push to get all of this packaged in Debian. It's a surprisingly powerful combination.
[0] https://github.com/FOSDEM/infrastructure/tree/master/ansible...
[1] https://github.com/FOSDEM/video/blob/master/instructions/FOS...
[2] https://github.com/voc/voctomix
[3] https://github.com/arut/nginx-rtmp-module/
In Frab – free and open conference management systemI recently came across the software they use for mixing their livestreams, and it looks really useful for anyone trying to build out a system to stream or record talks:
https://github.com/voc/voctomix
In 33rd Chaos Communication Congress LivestreamsVoctomix: full-HD software live-video mixer
3 points · Open discussion