The Tool Desk
Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →VP9 is a video codec: it compresses video so it can be transmitted using less data for a given visual quality. For live streaming, that can mean lower bandwidth needs or better quality at the same bitrate—but only if the encoder can keep up in real time, the platform accepts the codec over the chosen ingest route, and viewers’ devices can play it. On YouTube, Google lists VP9 for DASH ingestion, a route better suited to higher resolutions than ultra-low-latency streaming.
What VP9 is—and what it is not
Google describes VP9 as a next-generation video compression format developed by the WebM Project, for web and mobile use cases ranging from lower-bitrate video to ultra-high-definition content. VP9 also supports 10-bit and 12-bit encoding and HDR.
Three terms are easy to mix up:
- Codec: the method used to compress and decompress video. VP9 and H.264 are codecs.
- Container: the format that packages audio and video tracks. WebM is a common container for VP9.
- Protocol: the method used to send media to a platform or deliver it to viewers. RTMP, RTMPS, DASH, and HLS are protocols.
A VP9 file is not automatically a VP9 live stream: the encoder, container, ingest protocol, platform, and player all have to fit together.
What VP9 changes for live streaming
Potentially less bitrate for similar quality
Google says VP9 can reduce video bitrates “by as much as 50% compared with other known codecs.” That is Google’s broad maximum claim; it is not a guaranteed saving for every source, encoder, quality target, or streaming service. Google’s protocol guidance describes the practical tradeoff: a more efficient codec can deliver higher quality at a given bitrate or similar quality at a lower bitrate, which may reduce buffering when bandwidth is constrained.
#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.
Efficiency is not the same as a guaranteed improvement in a live broadcast. The actual result depends on the content and encoding choices, as well as the route the platform accepts and the playback devices viewers use.
Real-time encoding matters
A live encoder has to compress each frame quickly enough to keep pace with the incoming video. Google’s VP9 settings guidance emphasizes real-time performance and threading. It describes constant bitrate (CBR) as typical for live encoding and advises avoiding lookahead with alternate-reference frames where that would add latency.
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.
Google’s guidance gives these suggested live target bitrates:
| Output format | Google’s suggested VP9 live target bitrate |
|---|---|
| 1920×1080 at 24–30 fps | 2,500 kbps |
| 1920×1080 at 50–60 fps | 4,200 kbps |
These are Google’s recommendations, not guaranteed settings or a universal standard. The settings page includes draft notes, and the right target for a particular stream depends on its content, encoder, network, and platform.
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.
How VP9 affects YouTube ingest and latency
YouTube’s protocol comparison lists VP9 support for DASH ingest, while its RTMP and RTMPS entries list H.264. The distinction matters: choosing VP9 does not itself determine latency; the ingest protocol and platform’s processing also play a role.
- DASH: YouTube describes DASH as better suited to 4K because it supports VP9, but not suitable for ultra-low latency. YouTube transcodes and re-chunks incoming DASH media; output segment duration depends on whether the stream is optimized for streaming quality or latency.
- RTMP and RTMPS: YouTube lists H.264 for these ingest paths. RTMPS adds encryption to RTMP. The protocol guide describes RTMP-based ingest as lower-latency than segment-based DASH or HLS.
- HLS: YouTube’s comparison says HLS can support advanced codecs, but its VP9 entry is associated with DASH. HLS and DASH are segment-based and typically incur more latency than RTMP.
In short, VP9 can be useful when the platform’s supported route fits the broadcast. If very low delay is the priority, YouTube’s listed RTMP/RTMPS path uses H.264 rather than VP9. Check YouTube’s current ingest requirements before configuring a live encoder, since platform support can change.
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
VP9, H.264, and AV1: how to choose
| Consideration | VP9 | H.264 | AV1 |
|---|---|---|---|
| Compression efficiency | MDN describes VP9 as more efficient than H.264. | Less efficient than VP9 and AV1 in MDN’s comparison. | MDN describes AV1 as more efficient than both VP9 and H.264. |
| Encoding burden | Live encoding must keep pace with the video; Google emphasizes real-time performance and threading. | Specific comparative encoding-cost figures are not stated in the cited guidance. | MDN notes that AV1 is more computationally intensive to encode. |
| Playback support | Broad modern-browser support when paired with WebM, but support varies by software, operating system, and container. | A pragmatic choice for broad compatibility, according to MDN. | Support depends on the viewer’s hardware and playback software. |
| YouTube ingest route in the cited comparison | DASH. | RTMP and RTMPS. | Specific ingest details are not stated in the cited comparison. |
| Common container fit | WebM is the standard pairing in MDN’s guide; VP9 in MP4 has only partial support depending on playback software. | Not stated in the cited codec guide. | Not stated in the cited codec guide. |
These comparisons describe general tendencies, not a promise that one codec will look better or use less bandwidth for every video. A practical choice depends on the tradeoff that matters most:
- Choose VP9 when the platform supports the required ingest route, bandwidth efficiency or higher resolution matters, the encoder has enough capacity, and the intended audience can decode it.
- Choose H.264 when broad device compatibility or a lower-latency YouTube RTMP/RTMPS workflow takes priority.
- Consider AV1 when its potential efficiency is valuable and the extra encoding burden and audience hardware support are acceptable.
Check playback compatibility before you commit
VP9 in WebM is widely supported across modern browsers, according to MDN, but that does not mean every player, operating system, container, or device can decode every VP9 stream. MDN describes VP9 in MP4 as only partially supported depending on playback software and notes a lack of native playback support on macOS and iOS in the software context covered by its guide. Android’s supported-formats documentation lists VP9 and WebM support.
Free tools Windows power users keep installed
One-click scans. No signup required.
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.
For a public stream, test the actual combination your audience is likely to use: browser or app, device, operating system, container, and playback route. Do not infer universal support from one successful desktop test. These compatibility descriptions reflect the cited documentation; support can change with software updates.
Running a prerecorded YouTube stream continuously
If your goal is to keep a prerecorded video or playlist live on YouTube around the clock, that is a different problem from selecting a codec for a camera-based live encode. StreamNeo is a cloud service for looping uploaded videos to a YouTube channel: upload a recording or build a playlist, add your YouTube stream key, and go live. It streams the uploaded video as made, up to 4K at 60 fps, without re-encoding; it does not go live from a camera or stream to other platforms. See StreamNeo for the service details.
StreamNeo’s monthly option is $9.99 per month. The first day is free with no card, one free day per account. To try it, start a StreamNeo account.
Quick Recap
Before going live
- Confirm that the platform accepts your codec over the ingest protocol you plan to use.
- Check whether your encoder can maintain real-time output at the chosen resolution and frame rate.
- Test playback on the browsers, devices, and operating systems your viewers are likely to use.
- For YouTube, check its current live streaming requirements and make sure your video and audio are rights-cleared. A codec does not change copyright obligations or the platform’s rules for reused content.
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.
