Broadcasting to YouTube, Twitch, and Kick simultaneously without paying for third-party restreaming services requires direct multi-output architecture. OBS Studio natively limits you to a single primary RTMP output and a backup failover server. To push your live feed to multiple platforms concurrently from your local machine, you need a specialized output plugin.
The Sorayuki plugin (obs-multi-rtmp) solves this by cloning your encoded video stream and dispatching it to multiple destination URLs. Setting this up correctly saves monthly subscription fees and reduces latency compared to cloud-based relay services. Here is how to configure, optimize, and troubleshoot local multistreaming in OBS Studio.
Understanding Native OBS Limits Versus Plugin Architecture
By default, OBS handles streaming through a single output pipeline. When you click Start Streaming, your encoder packs your video and audio into a single Real-Time Messaging Protocol stream and pushes it to the server address defined in your settings.
The backup server field in standard OBS settings only triggers if the primary connection drops. It doesn't send duplicate data concurrently.
Before output plugins became stable, creators relied on cloud relays like Restream.io. While functional, those services introduce three major drawbacks:
- Added latency of 1 to 3 seconds as the signal hops through an external relay.
- Bitrate capping on free tiers, forcing you to degrade your visual quality.
- Recurring subscription fees for professional features.
The Sorayuki plugin operates differently. It runs entirely inside your local OBS instance. Once your hardware encoder packages the video frames once, the plugin splits the data packet locally and sends simultaneous RTMP pushes to each configured endpoint. Your CPU or GPU encodes the stream only once, minimizing the hardware penalty of broadcasting to multiple platforms.
Installing and Configuring the Sorayuki Plugin
Getting the plugin running requires placing the binary files in your local OBS directory and configuring your separate stream keys.
- Download the correct release package for your operating system from the official OBS Studio Forums or the developer's GitHub repository. Ensure the plugin version matches your installed major version of OBS Studio.
- Close OBS completely. Extract the downloaded archive and move the plugin files into your local OBS plugin directory. On Windows, this is typically
C:\Program Files\obs-studio\obs-plugins\64bit. - Launch OBS Studio. Navigate to the top menu bar, click View, then select Docks. Check the newly added option for Multi-Output or Sorayuki to open the management panel.
- Dock the panel anywhere in your workspace, such as next to your audio mixer or chat window.
- Click Add New Target inside the plugin panel. Paste your RTMP server URL and stream key for your secondary platform (for example, YouTube or Kick).
- Configure individual resolution or bitrate scaling per output if a platform requires a lower ceiling, or match your main canvas settings for identical quality.
Hardware Resource Management and Bitrate Strategy
Multistreaming demands significantly more from your hardware network and local machine than single-platform broadcasting. Even though the video is encoded only once, your network interface card must upload multiple outbound streams simultaneously.
If your upload bandwidth is 15 Mbps, sending three separate 1080p streams at 6,000 Kbps will saturate your connection, causing massive dropped frames and stuttering.
To maintain stability, follow these resource allocation guidelines:
- Prioritize Hardware Encoding: Rely on NVENC (NVIDIA), AMF (AMD), or QuickSync (Intel). Software encoding via x264 will tax your CPU heavily when combined with network packet duplication.
- Calculate Total Upload Consumption: Add up the bitrates of every active destination. If your main Twitch stream uses 6,000 Kbps and your secondary YouTube stream uses 6,000 Kbps, your total upload requirement is 12,000 Kbps plus audio overhead. Ensure your ISP plan provides an upload speed at least double your total usage.
- Scale Down Secondary Bitrates: Platforms handle compression differently. Twitch caps ingest around 6,000 to 8,000 Kbps, while YouTube accepts much higher bitrates. Adjust individual outputs in the plugin settings to match each platform's optimal ingest sweet spot rather than maxing out everything blindly.
Common Configuration Mistakes to Avoid
Streamers frequently encounter crashes, authentication loops, or audio desync when setting up multi-output plugins for the first time. Avoid these frequent pitfalls:
- Mismatched Plugin Versions: Updating OBS Studio while keeping an old plugin binary will cause OBS to crash on startup. Always update your plugins alongside core software updates.
- Ignoring Audio Track Routing: By default, OBS sends all active audio tracks to your primary stream. If you use VST filters or separate tracks for music, ensure your secondary outputs are pulling the correct audio mix channels in the advanced audio properties.
- Ignoring Platform Terms of Service: Some partner programs require exclusivity. Broadcasting simultaneously to competing platforms while under a platform contract can result in monetization penalties or channel suspension. Review your agreements before going live.
Frequently Asked Questions
Will multistreaming cause my game to lag?
It depends on your hardware encoder settings. Because modern GPU encoders feature dedicated hardware chips for video encoding, pushing two outputs instead of one consumes minimal extra GPU resources. The primary bottleneck is usually your internet upload bandwidth, not your graphics card.
Can I set different stream titles for each platform within OBS?
The Sorayuki plugin focuses purely on RTMP routing and stream delivery. It does not manage remote dashboard titles or game categories. You must update your stream metadata manually on each platform's creator dashboard before hitting go live.
What should I do if one platform disconnects mid-stream?
If a single destination drops due to an intermittent network hiccup on that specific ingest server, the plugin handles that output independently. Your main stream to other platforms will continue uninterrupted while the plugin attempts to reconnect the failed endpoint.
Do I need a special stream key for secondary platforms?
Yes. Every platform requires its own unique RTMP URL and secret stream key. Never reuse a stream key across different services, as it will cause connection conflicts and authentication failures.
