To stream a long prerecorded video as a YouTube Live broadcast, play the file in streaming software such as OBS and encode it as a live signal. Set the live encoder’s codec, resolution, frame rate, bitrate and keyframe interval for YouTube’s ingest requirements; shrinking the source file first does not configure those settings. No setting can guarantee zero quality loss, but the right output settings and a reliable connection can minimize avoidable degradation and buffering.
“Compress” can mean two different things: making a file smaller before uploading it, or encoding video in real time for a live broadcast. The steps and settings below cover the live workflow first, then explain when offline compression is relevant.
Can you stream a prerecorded video as a YouTube Live broadcast?
Yes. Add the local video file to a scene as a media source in OBS or equivalent streaming software, then start the broadcast. The software plays the file and encodes its playback into the outgoing live signal. OBS documents media sources and an option to loop playback in its Media Sources guide.
This is not the same as uploading a video normally. For a live broadcast, the encoder sends a continuous stream to YouTube; for an ordinary upload, you prepare a file for YouTube to process. YouTube publishes separate live encoder recommendations and upload encoding recommendations.
#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.
Set the live output before compressing the source
Start with the properties of the source—resolution, frame rate, codec, audio layout and whether it is HDR or SDR—and choose the output you intend to send. Then set the live encoder to match that output and the protocol. A smaller source file does not automatically produce a lower-bitrate live stream: file size is determined by the file’s encoding and duration, while live ingest uses a steady bitrate configured in the encoder.
- Load the video. In OBS, add a Media Source to the scene and select the file. Enable looping only if you want playback to restart automatically when it reaches the end.
- Choose an ingest protocol and compatible codec. YouTube’s RTMP/RTMPS guidance lists H.264, H.265/HEVC and AV1, up to 60 fps, and recommends RTMPS. For HDR, YouTube recommends H.265/HEVC over RTMP(S); AV1 is not supported for HDR. YouTube says HLS supports HDR or codecs unavailable over RTMP, but its segmented delivery has higher latency. See YouTube’s live streaming protocol guidance.
- Set rate control and keyframes. For RTMP/RTMPS, YouTube recommends constant bitrate (CBR) and a two-second keyframe interval, with intervals no longer than four seconds.
- Set resolution, frame rate and bitrate. Use the matching row in the table below as YouTube’s published ingest recommendation, not as a guarantee of visually lossless output.
- Configure audio and picture format. YouTube lists AAC or MP3 audio for RTMP/RTMPS; 5.1 surround is supported only with AAC. Its recommendations include stereo at 128 kbps and 44.1 kHz, or 5.1 at 384 kbps and 48 kHz. Use square pixels and progressive scan. For video, YouTube lists two B-frames, one reference frame and CABAC; use Rec. 709 for SDR, with 8-bit SDR or 10-bit HDR.
- Test and monitor. Check your upload speed, run a representative preflight with similar motion and audio, and monitor YouTube’s stream health during the broadcast. Your stable upload capacity needs headroom above the selected bitrate so normal variation does not interrupt delivery.
YouTube Live bitrate recommendations
The following are YouTube Help’s recommended RTMP/RTMPS ingest bitrates, checked October 3, 2026. The AV1/H.265 values are grouped together in YouTube’s guidance. Choose the row that matches the output codec, resolution and frame rate; these are platform recommendations, not an independent quality test.
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.
| Output resolution and frame rate | AV1 or H.265/HEVC | H.264 |
|---|---|---|
| 4K/2160p, 60 fps | 35 Mbps | 50 Mbps |
| 4K/2160p, 30 fps | 30 Mbps | 42 Mbps |
| 1440p, 60 fps | 24 Mbps | 34 Mbps |
| 1440p, 30 fps | 15 Mbps | 21 Mbps |
| 1080p, 60 fps | 12 Mbps | 17 Mbps |
| 1080p, 30 fps | 10 Mbps | 14 Mbps |
| 720p, 60 fps | 6 Mbps | 8 Mbps |
| 720p, 30 fps | 6 Mbps | 8 Mbps |
| 480p, 30 fps | 3 Mbps | 4 Mbps |
| 360p, 30 fps | 3 Mbps | 4 Mbps |
For example, YouTube recommends 10 Mbps for 1080p at 30 fps with AV1 or H.265, and 14 Mbps with H.264. For 1080p at 60 fps, its recommendations are 12 Mbps and 17 Mbps respectively. Do not raise the bitrate just because the source file is large; choose based on the intended live output and available stable upload capacity.
What “without losing quality” can realistically mean
There is no universal setting that guarantees a live stream will look identical to its source. The result depends on source quality, motion and fine detail, encoder behavior, output resolution and bitrate, connection stability, and YouTube’s processing. YouTube automatically transcodes incoming live video into formats for viewers, so creator settings determine the ingest signal rather than a specific rendition every viewer receives.
Recommended Free Tools
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.
- Keep the output resolution and frame rate appropriate to the source; increasing either cannot restore detail that is not present in the file.
- Choose a bitrate from YouTube’s recommendation for the selected codec and output, then verify the connection can sustain it with headroom.
- Test a representative section containing the most motion, fine detail and audio variation. A static opening is not a sufficient preflight for a fast-moving game video.
- Hardware encoding in OBS can move encoding work from the CPU to a specialized GPU component. That may help performance allocation, but it does not establish a universal quality advantage over other encoding options.
- Check YouTube’s stream health during the event and respond to warnings rather than assuming a successful local preview proves stable ingest.
Latency, HDR and 4K trade-offs
Choose latency according to how quickly viewers need to see the broadcast and how much buffering they can tolerate. YouTube explains that lower latency leaves less read-ahead buffer and can result in more buffering. HLS may be necessary for some HDR or codec combinations unavailable over RTMP, but its segmented delivery introduces higher latency. YouTube’s low-latency option is unavailable for 4K/2160p.
If the video is HDR, confirm the protocol and codec support it before building the setup around an RTMP/RTMPS preset. If the material is SDR, use the SDR recommendations rather than treating an HDR setting as a quality upgrade.
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
When to compress the file offline
If your goal is a smaller upload file or reduced storage use, use YouTube’s separate upload encoding recommendations and preserve the source’s intended resolution, frame rate and dynamic range. Re-encoding can reduce quality, especially when the original is already compressed; a smaller file is not automatically better for a live broadcast. For a live file-playback stream, offline compression is optional and does not replace configuring the outgoing live encoder.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Troubleshooting common live-encoding problems
- YouTube reports unstable or insufficient stream health: check the selected bitrate against a fresh upload-speed test, allow headroom, and repeat a representative preflight. Reduce the output bitrate or resolution if the connection cannot sustain the target reliably.
- The broadcast looks softer than the file: confirm the output resolution, frame rate, codec and bitrate; inspect a high-motion segment; and remember YouTube transcodes the incoming signal for viewers. A larger source file alone does not prevent live ingest or platform processing from affecting the result.
- Playback ends instead of repeating: verify that the OBS Media Source is configured to loop, if continuous replay is intended.
- HDR is unavailable or the colors look wrong: verify the source’s HDR/SDR status and choose a supported codec and protocol. YouTube recommends H.265/HEVC for HDR over RTMP(S), and does not support AV1 for HDR there.
- Viewers experience buffering despite a clear local preview: compare the chosen latency mode with the connection and buffering tolerance. Lower latency uses less read-ahead buffer, while HLS’s segmented delivery has higher latency.
- The encoder struggles under load: inspect CPU and GPU use and consider an available hardware encoder. Hardware encoding changes where work is performed; test the resulting stream rather than assuming it will improve quality.
Copyright and YouTube channel rules
Only stream video and audio you have the rights or permission to broadcast. A recording being prerecorded, or already uploaded elsewhere, does not establish permission to rebroadcast it. YouTube’s copyright and channel rules apply to live streams as well as ordinary uploads; check the platform’s current policies and any applicable licenses before scheduling a long broadcast. Do not assume that a long stream is exempt from copyright or reused-content review.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteBest 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.
Or let it run in the cloud
If the goal is to keep prerecorded video playing on a YouTube channel without leaving your home computer running, StreamNeo is a cloud service for uploaded videos and playlists. Upload the recording or build a playlist, add your YouTube stream key once, then go live. It streams to YouTube only and does not broadcast from a camera.
- Nothing has to stay on at home: the stream runs in the cloud, not on your computer or home connection.
- Any quality up to 4K 60 fps at one flat price per slot; the upload streams as made, without re-encoding or quality tiers.
- Automatic recovery if YouTube drops the stream.
- The first day is free with no card, one free day per account. UPI and cards are accepted in India; card checkout is available worldwide.
- Monthly: $9.99 per month.
Start your free StreamNeo day.
Frequently Asked Questions
Does compressing the video first reduce live-stream quality?
It can, if the offline re-encode discards detail. For file playback, offline compression is optional; configure the live encoder for the outgoing signal either way.
Can I use a different bitrate from YouTube’s recommendation?
Yes, but test the actual codec, output and connection. YouTube’s values are recommendations for RTMP/RTMPS ingest, not a guarantee of a particular viewer result.
Quick Recap
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.
Free tools Windows power users keep installed
One-click scans. No signup required.
