What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
“Connection refused” means FFmpeg could not establish a TCP connection to the configured YouTube ingest endpoint. Start by copying the current stream URL from YouTube Live Control Room and checking that FFmpeg is using the right protocol and destination. Then check whether the computer running FFmpeg can reach that host and port. The message alone does not identify the cause; a stream key, bitrate, or encoder setting is not the first thing to change.
What “Connection refused” tells you
FFmpeg has not connected to the configured server and port. That makes this a connection-stage failure, before YouTube can accept and evaluate the stream key or assess the incoming video. The error does not by itself distinguish a wrong URL or port from a network path, firewall, or other connection problem.
Do not treat “Connection refused” as the same error as a timeout. YouTube’s RTMPS troubleshooting guide gives “failed to connect to server — connection timed out” as a separate example; the exact meaning and cause depend on the error and the network conditions.
Check the ingest URL and stream key
- Copy the stream URL for the selected stream. In YouTube Studio, open the stream’s Live Control Room settings and copy the current Stream URL. YouTube describes this URL as the address that tells an encoder where to send the feed. Put it in FFmpeg’s server or destination field; do not rely on a remembered hostname or an endpoint copied from another platform. See YouTube’s guide to managing live stream settings.
- Copy the stream key separately. Paste the current key into the encoder’s key field, or include it in the destination only as required by your FFmpeg setup. YouTube describes the key as a password-like identifier that routes the encoder feed and lets YouTube accept it. If YouTube reports a startup problem after the connection is made, its troubleshooting steps include copying a stream key from Live Control Room and pasting it into the encoder: Troubleshoot your YouTube live stream. Never publish or share the key.
- Check the protocol and port together. If you intend to use RTMPS, the URL must actually be the RTMPS address supplied for your stream, not an RTMP address with a changed label. YouTube says to obtain the RTMPS URL using the lock control in Live Control Room. Confirm your FFmpeg build supports the chosen protocol handler. YouTube’s suggestion to try port 443 applies to the SSL error case it documents; it is not a universal fix for every refused connection. See YouTube’s RTMPS setup and troubleshooting guidance.
YouTube recommends RTMPS: “We recommend streaming to YouTube Live with RTMPS, a secure extension to the popular RTMP streaming video protocol.” Its encoder guidance also lists RTMP/RTMPS among the supported protocols. YouTube’s encoder settings guide covers protocols and encoding settings.
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Check whether the FFmpeg host can reach YouTube
If the URL, protocol, and port match the current stream settings, investigate the machine and network where FFmpeg is running. Check outbound firewall rules, corporate or venue network restrictions, VPN or proxy configuration, routing, and DNS resolution for the supplied hostname. These are possible diagnostic branches, not a diagnosis of your particular connection; without the full log, endpoint, operating system, and network details, the specific cause cannot be confirmed.
- Verify the destination hostname resolves on the FFmpeg host and that the configured destination and port are the ones shown for the stream.
- Check whether the host or network blocks outbound RTMP or RTMPS traffic to that endpoint and port. A local firewall, managed network policy, VPN, or proxy may affect the result.
- Retry from the same machine and network after any change, so you can tell whether the connection-stage error has changed.
YouTube emphasizes reliable connectivity and sufficient outbound bandwidth. Bandwidth affects sustained delivery, but a bandwidth shortfall is not, by itself, proof of why a TCP connection was refused. YouTube’s encoder settings guide gives recommended settings, while its streaming tips discuss upload capacity and headroom.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
After it connects: test stream health and encoding
Once FFmpeg establishes a connection, test with representative motion and audio, preview the stream in Live Control Room, and check YouTube’s stream-health messages. Only then troubleshoot post-connection issues such as bitrate, codec, frame rate, or video format. Those settings do not explain an initial TCP refusal.
YouTube’s published guidance, accessed in 2026, recommends CBR and a 2-second keyframe interval, which should not exceed 4 seconds. Its page lists H.264, H.265, and AV1, with up to 60 fps. For H.264, it gives these bitrate figures:
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
| Resolution and frame rate | Minimum bitrate | Recommended bitrate |
|---|---|---|
| 1080p at 60 fps | 6 Mbps | 17 Mbps |
| 1080p at 30 fps | 5 Mbps | 14 Mbps |
| 720p at 60 fps | 3 Mbps | 8 Mbps |
YouTube says to leave 20% upload-bandwidth headroom; shared networks can reduce the capacity available to an individual stream. These figures are encoding and delivery guidance, not a remedy for a refused TCP connection.
Common troubleshooting branches
- FFmpeg repeatedly says “Connection refused” before a stream appears: re-check the copied ingest URL, protocol, and port, then investigate outbound reachability from the FFmpeg host.
- YouTube reports a startup or key problem after FFmpeg connects: copy the current stream key from Live Control Room into the encoder. Keep the key private.
- The configured RTMPS connection reports an SSL error: confirm that the actual RTMPS URL from Live Control Room is in use and that the FFmpeg build supports the selected protocol. YouTube’s port 443 suggestion is for its documented SSL error case, not a blanket response to “Connection refused.”
- The connection works, but YouTube reports poor stream health: use the health message to investigate encoding settings, upload capacity, and network stability. Check bitrate against available upload capacity and retain YouTube’s suggested headroom.
- The error changes to a timeout: treat it as a distinct symptom, not another wording for refusal. Use the exact error and the endpoint’s reachability from the FFmpeg host to narrow the problem.
A historical FFmpeg-user mailing-list log shows the same connection-refused pattern in a Twitch example, but it does not establish a YouTube-specific cause or fix. Its context is useful only for recognizing that the error can occur at the TCP connection stage.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Or let it run in the cloud
If your goal is to keep uploaded videos playing as a YouTube live stream around the clock, StreamNeo is a cloud alternative to maintaining an FFmpeg process on your own machine. Upload a recording or build a playlist, add your YouTube stream key once, and go live. Your computer and home connection do not have to stay on. Every slot includes one always-on stream, 24/7 looping and playlists, 10 GB of storage per slot pooled across active slots, support, and automatic recovery if YouTube drops the stream. Videos stream as uploaded, up to 4K at 60 fps, at one flat price per slot with no re-encoding or quality tiers. The first day is free with no card; the monthly option is $9.99 per month. UPI and cards are available in India; card checkout is available worldwide. See StreamNeo, or start your free first day.
Quick Recap
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →
