How to Connect Facebook Live Streams to YouTube Simultaneously

Streaming live to both Facebook and YouTube at the same time isn't a native feature on either platform — but it's absolutely achievable. The approach you use depends on your technical setup, the tools you already have, and how much control you want over your broadcast. Here's how it actually works.

Why You Can't Just "Link" the Two Platforms Directly

Facebook Live and YouTube Live are competing platforms. Neither offers a built-in option to cross-post a live stream in real time to the other. What you can do is send a single video feed to both platforms simultaneously using a technique called multistreaming — routing one output to multiple destinations at once.

This requires either:

• Broadcast software (like OBS Studio) that supports multiple stream outputs
• A third-party multistreaming service that acts as a relay
• A hardware encoder with multi-destination support

Each approach has different requirements and tradeoffs.

Method 1: Using a Multistreaming Service

The most common solution for creators without advanced technical setups is a multistreaming platform — a cloud-based service that accepts your single stream and redistributes it to Facebook Live, YouTube Live, and other destinations simultaneously.

How it works:

1. You stream once to the multistreaming service using an RTMP URL and stream key
2. The service splits and forwards the feed to each destination
3. Viewers on Facebook and YouTube each see your live stream on their respective platforms

Popular categories of tools in this space include dedicated multistreaming platforms (both free-tier and subscription-based options exist). These services typically provide a dashboard where you connect your Facebook and YouTube accounts via OAuth, then generate a single ingest point for your encoder or camera.

Key variables here:

• Free tiers often cap stream quality (commonly at 720p or lower bitrates)
• Latency may vary per destination depending on the relay infrastructure
• Some services add watermarks or limit broadcast duration on free plans

Method 2: OBS Studio with Multiple Stream Outputs 🎛️

OBS Studio (Open Broadcaster Software) is free, open-source, and widely used for PC-based live streaming. By default, OBS streams to one destination — but there are two ways to extend this:

Using the "Multiple RTMP Outputs" Plugin

A community plugin called obs-multi-rtmp allows OBS to send the same stream simultaneously to multiple RTMP endpoints. You'd configure:

• Stream 1: Facebook Live RTMP URL + your Facebook stream key
• Stream 2: YouTube Live RTMP URL + your YouTube stream key

Both Facebook and YouTube provide RTMP ingest URLs and stream keys in their respective Live Producer / Studio dashboards.

Using OBS's Built-In Custom RTMP + a Relay Service

Alternatively, you can point OBS at a multistreaming service's RTMP endpoint and let the service handle the splitting — combining Method 1 and Method 2 in a hybrid approach.

Hardware demands matter here. Encoding and pushing two simultaneous high-quality streams is more CPU and upload-bandwidth intensive than a single stream. A setup that handles 1080p60 to one platform comfortably might struggle or drop frames doing the same to two.

Method 3: Hardware Encoders

For professional broadcasters or those running events without a dedicated PC, standalone hardware encoders (devices from manufacturers in the broadcast equipment category) often support multiple simultaneous RTMP destinations natively. You configure destination URLs directly on the device — no PC software required.

This is generally the most stable and reliable approach for high-stakes broadcasts, but hardware encoders carry a significantly higher upfront cost compared to software solutions.

What You'll Need From Each Platform

Regardless of method, you'll need to set up a live event on both platforms before going live:

Both platforms also require you to schedule or activate a live event before your stream key becomes valid. YouTube's stream key can often be set to "persistent" (reusable), while Facebook's keys may rotate depending on your settings and account type.

The Variables That Shape Your Outcome 🔧

Before committing to a method, the factors that most affect which approach will actually work for your situation include:

• Upload bandwidth — multistreaming doubles your outbound data requirements; most recommendations suggest a minimum of 10–15 Mbps upload for dual 1080p streams
• Streaming source — mobile phone, PC, or dedicated camera each support different tools
• Technical comfort level — OBS plugins require some configuration; third-party services are typically more plug-and-play
• Audience engagement — some multistreaming tools allow consolidated chat management across both platforms; others don't
• Platform account types — Facebook Live behaves differently on personal profiles vs. Pages vs. Groups, which affects RTMP access and stream key availability

Mobile Streaming Considerations

If you're streaming from a smartphone, the options narrow. Most native Facebook and Instagram Live apps don't expose RTMP output. Mobile-friendly options typically involve:

• Third-party mobile live streaming apps that support multistreaming destinations
• Screen-sharing or capture workarounds using a PC as an intermediary

The ecosystem for mobile multistreaming is less mature than desktop, and quality/reliability trade-offs are more pronounced.

The Gap That Remains

The mechanics of connecting Facebook Live to YouTube are straightforward once you understand the RTMP-based infrastructure both platforms use. But whether a free multistreaming tier covers your needs, whether your internet connection handles the load, whether OBS plugin configuration fits your skill level, or whether a hardware encoder justifies the cost — those answers live entirely in your specific setup, content type, and how much reliability your broadcasts require.