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OBS Studio 33

(github.com)

162 points

by pentagrama5 hours ago |
44 comments
upvoteby jimmydorry1 hours ago|
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> Updated CEF from 127/6533 to 150/7871

Finally... The CEF they used was 2 years out of date, and after RCE exploits [0] occuring in the wild getting big enough that they got picked up in the media [1], we finally have a fix 1 month later.

[0] https://blog.scrt.ch/2026/09/22/how-one-twitch-chat-message-...

[1] https://news.ycombinator.com/item?id=49852143

[2] https://www.scworld.com/brief/vulnerable-obs-overlay-and-chr...

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upvoteby wizardcm24 minutes ago|
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You can find why it was complicated [0] and why it took so long [1] on GitHub. I do wish I had been faster on it. That said, the RCE required the user to be using a vibe-coded web-based chat overlay that didn't properly sanitize chatter inputs, so has a (hopefully) limited scope.

[0] https://github.com/obsproject/obs-studio/discussions/3853#di...

[1] https://github.com/obsproject/obs-studio/discussions/3853#di...

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upvoteby EduardoBautista21 minutes ago|
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My vibe coded apps tend to over sanitize inputs. Not sure what was the point of blaming LLMs.
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upvoteby Kevin_Guo6 minutes ago|
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We built Live Face Swap AI to let OBS users swap faces in real time during live streams: https://livefaceswapai.com
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upvoteby ydoc521252 minutes ago|
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I love that I can stream from my iPhone directly into OBS on my Mac. I don't love that Metal shaders aren't supported, and I have to rely on janky extensions to get them working.
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upvoteby mixtureoftakes2 hours ago|
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Did they finally fix the bug where if you have less than ~40gb storage the recording will just randomly die for no reason with no notice, it is unimaginably annoying
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upvoteby wizardcm21 minutes ago|
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Is this on macOS [0] or another platform? I don't think I've heard of this issue - if you have a log of such a session, please create a bug report [1].

[0] https://github.com/obsproject/obs-studio/issues/10596

[1] https://github.com/obsproject/obs-studio/issues

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upvoteby evrimoztamur2 hours ago|
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This is happening all time time and I lost countless video recordings because of it...
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upvoteby TomGarden2 hours ago|
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Love OBS! It's so far ahead of proprietary apps in so many areas, it's incredibly impressive
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upvoteby adeptima2 hours ago|
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Using OBS only when it’s a must

Much happier with Cap for screencast recording https://github.com/capsoftware/cap

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upvoteby Matl1 hours ago|
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OBS is much more aimed at livestreaming to platforms like Twitch and managing multiple cameras incl one of you, one of your screen etc. Well beyond what Cap is for.

But yes, use the most specialized tool for the task at hand.

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upvoteby haunter1 hours ago|
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Why are the binary releases hosted on a 3rd party site and not on Github?
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upvoteby the_angry_angel1 hours ago|
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Cap completely ate several recordings for me. Admittedly they were over an hour long, and I should’ve broken them up a bit, and perhaps it’s not what it’s used for. Switched back to OBS, while it’s not as easy to use it’s pretty reliable
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upvoteby nprateem17 minutes ago|
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Cap routinely fails to render videos properly. The mouse ends up way off where it was, overlays somehow fail to be rendered.

Even if the preview player shows it correct, once it's rendered the cursor just seems to drift way off making the video useless.

I've gone back to using QuickTime.

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upvoteby forgotmypw172 hours ago|
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While we're here, does anyone know a screen recording application that automatically takes into account display changes, audio device changes, camera resets, etc.?

I'm making do with OBS, but I lose more video to "plugged in external monitor and forgot to update OBS config" than I actually record.

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upvoteby jwr2 hours ago|
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Yes, please, that would help so much. OBS seems to be designed for static setups and a single output stream. In my case, I have a setup that changes often (for example, connect a USB video device that processes input from a microscope). I thought I would be able to record multiple video streams at once without burning them into a single output stream (e.g. to multiple files, or a multi-stream file), but this turned out to be difficult without hacks.
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upvoteby stwr1 hours ago|
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The Branchoutput plugin[1] is what you are looking for for multi recording/streaming. It allows you to add recording (or streaming destinations) to individual sources, scenes and outputs via the video filter settings. It is really quite powerful.

[1] https://obsproject.com/forum/resources/branch-output-streami...

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upvoteby jwr35 minutes ago|
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Thanks -- this does look like it would do this. But I'm wondering if this entire setup isn't completely overkill. All I need is to record multiple video streams simultaneously. I currently do this by launching multiple Quicktime Player apps and clicking "record" in each one of them...
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upvoteby structural1 hours ago|
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Have you considered using GStreamer pipelines for this? And taking it one step further, if you want to use OBS generally, there's a plugin for OBS that allows you to integrate pipelines too.

The common case for the plugin is to do some preprocessing before importing the video into OBS, but you can also use the pipeline as a video filter, which is really powerful, because you can inject a filter into not only a single source, but also at any level of a nested scene. So you can scale/composite several inputs together and then the video filter can copy the source stream and encode/tee it to a file output. Might still be considered a hack of sorts.

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upvoteby albert_e2 hours ago|
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I too frequently plug and unplug dock and external displays. It's a little painful to keep checking and sometimes re-add display source to get the default screen and voice recording working.

I wonder if the "modern" way for problems of this nature is to fork the open-source repo and ask your favourite agent to strip it down to bare essentials that you need (performance gains) and add the specific feature enhancements you want (needs to work only for your configuration -- may not pass the quality standard needed for a PR)

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upvoteby trilogic1 hours ago|
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Not sure if and has bugs but is fast and easy: https://github.com/MathewSachin/Captura
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upvoteby structural2 hours ago|
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This could probably be automated using either an OBS plugin (if you really want deep integration and not running another program) or a standalone program (written in whatever language you want) that listens for display changes and pokes OBS using its websocket API. The hooks are definitely there to update source configs.
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upvoteby rwmj2 hours ago|
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Surely the main function of a capture program should be to capture video, no matter what, even if that means capturing too much / uninteresting sources some of the time?
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upvoteby flaunf2212 hours ago|
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> even if that means capturing too much

People streaming things mights disagree.

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upvoteby RobotToaster2 hours ago|
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As the name (Open Broadcaster Software) suggests, it isn't primarily a capture program.
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upvoteby structural2 hours ago|
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Except it's really designed to composite video from a bunch of different places and broadcast the result, whether they are windows, screens, cameras, etc. And a rather lot of people don't want every screen to be captured, just the ones that they have selected. It's not a "screen recorder" program, really. And it's explicitly designed with an API to be remote controlled if hardware changes out from under it, so you can encode exactly your own policy logic on what to do. (External display plugged in? Disable my laptop source at full resolution and enable my laptop and monitor sources, side by side, with one scaled as necessary, and in this layout. But if I'm currently recording or streaming, don't do anything. - this is user-specific logic)
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upvoteby TomGarden2 hours ago|
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I made a little script that reconnects everything the way I want it on launch via WebSocket. Works great
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upvoteby cube1722 hours ago|
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which OS ?
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upvoteby rgovostes1 hours ago|
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There are a handful of comments here rueing buggy behaviors. These days with nearly the same amount of effort to post a complaint you can delegate the task of reproducing the issue, diagnosing the root cause, and proposing a fix. Yes, it may incur a small to moderate cost, but it's a contribution to an open source project that apparently provides some value in return.
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upvoteby mystifyingpoi1 hours ago|
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Okay, I'll bite the bait. Assuming that I am a regular user (think gamer), I have a Windows PC, no dev tools, no AI subs or accounts, no GitHub. How specifically can I do the steps required to propose the fix they way you suggest?
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upvoteby wpm1 hours ago|
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How did you end up on Hacker News?
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upvoteby ro_bit53 minutes ago|
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address bar
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upvoteby thebruce87m18 minutes ago|
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Out of interest- what is your recommended path for this? I mean the path of least resistance where I don’t even have to check out the code locally or similar.
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upvoteby d5lt51 hours ago|
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That's two fallacies at the same time!

* Appeal to personal responsibility;

* False equivalence.

I'll strike those off my bullshit bingo card.

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upvoteby rgovostes55 minutes ago|
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"Appeal to personal responsibility" is not a fallacy. Get a different bingo card.
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upvoteby bulbar1 hours ago|
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I tend to agree with you, but why calling it "bullshit"? You can disagree and have a discussing without belittlering other people.
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upvoteby cwillu1 hours ago|
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That's not even remotely true.
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upvoteby TomGarden1 hours ago|
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Love this
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upvoteby cube1722 hours ago|
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Is solved the source disconnection with macOS ? Even it's an OS problem.
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upvoteby TomGarden2 hours ago|
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Easily fixable with a script that sets things up as you want it on launch via websocket
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upvoteby phatskat2 hours ago|
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Do you have that posted anywhere? I'd love to peek at it
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upvoteby TomGarden1 hours ago|
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No, but it was very trivial (Claude did it in maybe a minute). It just made a new launcher that opens OBS, then refreshes/checks all my sources.

Answer this thread if you struggle and I can post when I get to the office

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upvoteby ravivarmat2 hours ago|
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The plugin-loading overhaul and improved source snapping look like useful updates. OBS continues to show how much attention to detail matters in open-source software. Excited to see how creators and plugin developers adapt to version 33.0!
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upvoteby kevinhacker1 hours ago|
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[dead]
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upvoteby cube1722 hours ago|
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I use Lifelog Timeline
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