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4K Video Downloader Plus is the better choice for regular desktop downloading, playlists, batch jobs, subtitles, and repeatable workflows. 9xbuddy’s website is more convenient for an occasional download because it runs in a browser, but its domains and features are less consistent. They are not direct equivalents: “9xbuddy” can mean a website, Firefox extension, or Android app, and each has different capabilities. Check the exact product and domain before using it.
Quick comparison
| What matters | 4K Video Downloader Plus | 9xbuddy |
|---|---|---|
| What it is | Installed desktop application | Separate website, Firefox extension, and Android app |
| Best for | Frequent downloads, playlists, channels, subtitles, and batch work | An occasional browser-based download without installing a desktop program |
| Desktop platforms | Windows 11+, macOS 12+, Ubuntu 22.04 64-bit with GNOME or newer | Website works through a browser; extension and app have separate requirements |
| Mobile | No mobile app is listed on the product page | Android app is listed on Google Play; that version says YouTube downloads are unsupported |
| Quality | Advertises downloads up to 8K where the source provides them | Website and app advertise up to 8K where available; actual options depend on the source |
| Formats and extras | MP4, MKV, audio extraction, subtitles, and multiple audio tracks are advertised | Website advertises several formats; options vary by site and by which 9xbuddy product you use |
| Price signal | Free Starter tier with limits; paid plans include annual and lifetime options | Website advertises free use; Android listing describes five free downloads initially |
| Main caveat | Requires installation, and supported-site compatibility can change | Domain identity, availability, advertising, and features vary across products |
For 4K Video Downloader Plus features and listed system requirements, see the official product page. 9xbuddy’s website advertises support for more than 10,000 sites, but that is a marketing claim, not an independently verified compatibility count; see its website.
First, what do these names refer to?
Current purchases from 4K Download are for 4K Video Downloader Plus. The vendor says licenses for the older 4K Video Downloader are no longer available to buy. If you are comparing software to purchase, check that the product page and license are for Plus rather than assuming the older name refers to the current edition. The vendor’s purchase page explains the change.
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A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11“9xbuddy” is less specific. It may refer to the browser-based service at 9xbuddy.pro, a Firefox extension, or an Android app. Their features are not interchangeable. The Android listing, for example, explicitly says YouTube downloading is not supported in the Google Play version even though the website advertises YouTube support. Search results may also surface other similarly named domains; do not assume they are official or share the same operator.
#1 Best Overall
- 【1080P 60FPS Video Capture Card】 This HDMI game capture card is based on USB3.0 high speed transmission port, input resolution up to 4K@30HZ, output resolution up to 2K@30Hz or 1920×1080@60Hz. Type c and USB interface can meet most of the devices in daily life. Easily meet the online capture, real-time recording, online meetings, live gaming and other functions, so you have a better visual enjoyment. Note: For capture use only; requires capture software to function and is not intended for direct screen casting to a monitor or TV
- 【Ultra Low Latency Screen Sharing】 HDMI capture card is made of good quality aluminum alloy with strong heat dissipation, allowing you to enjoy ultra low latency while live gaming or video recording or live streaming, avoiding blue screens and lag. This HDMI to USBC capture card supports easy recording of good quality audio or HD video and transferring it to your computer or streaming platform, allowing you to record 60 fps HD video directly on your hard drive and real-time preview
- 【Plug and Play, Easy to Carry】 This HDMI 1080P video capture card does not require any additional drivers or external power supply, just plug and play for fast capture. The capture card is small and lightweight, so you can put it in your bag for emergencies, making it very portable for outdoor live streaming. It's also a great way to share content in game recording, video conference, video recorder and online teaching
- 【Wide Compatibility USB Capture Card】 Easily streams to Facebook, Youtube or Twitch. With the connection, this HDMI to USB C/3.0 video capture devices can be working on several Operating Systems and various software: Windows 7/ 8/ 10, Mac OS or above, Linux, Android, Laptop, Xbox One, PS3/PS4/PS5, Camera, DVDs, Set Top Box, Webcame, DSLR, Switch/Switch 2, TV BOX, HDTV, Potplayer/VLC, ZOOM, OBS Studio etc.
- 【Package Content & Note】 1x HD Audio Capture Card , 1x USB 3.0 to USB C Adapter (A-side 3.0, B-side 2.0), 1x user manual. Please note that you need to restart the OBS Studio software after the audio setup is complete, otherwise it will result in no sound output. When using an adapter, if the device is recognized as USB 2.0, try using the other side with the USB-C port. Simply flip the capture card and reconnect it to be recognized as USB 3.0
Where 4K Video Downloader Plus has the advantage
Playlists, channels, and recurring work
The desktop app is the stronger fit if you regularly save multiple videos. Its product page specifically advertises playlists, channels, search results, and batch downloads. That installed workflow is easier to repeat than processing individual links through a website. It is also the more straightforward choice when you want a consistent destination folder and settings across jobs.
That does not mean every playlist will work. Private videos, login requirements, age restrictions, regional limits, live streams, and changes made by the source platform can all prevent access. 9xbuddy also advertises playlist and batch features, but verify those claims for the particular website, extension, or app you mean; a feature listed for one version does not establish that another has it.
Subtitles, audio, and output options
4K Video Downloader Plus advertises MP4 and MKV output, audio extraction, subtitles, multiple subtitle languages, and multiple audio tracks. Those options are useful if you need to keep a subtitle file, select a particular language, or save audio separately from video. The 9xbuddy website advertises MP4, MP3, AVI, WMA, WMV, GIF, and other formats, while the Android listing describes audio-track and subtitle extraction. Treat these as claimed options: what is available depends on the source stream and the 9xbuddy product in use.
Rank #2
- This Video Capture Card Can transfer video and audio from VHS, VCR, DVD, Hi8, DV tapes, camcorders, or other video source devices with RCA or S-Video interfaces to your PC or Mac synchronously.
- Convert analog RCA/S-Video audio and video signal input to high-definition 1080P/30fps USB-A/USB-C output, digitize and save your good memories with your friends and family on your computer, share with your friends and family, leaving precious memories
- Plug and play, easy to operate, just connect the RCA or S-Video interface of your video recorder to the USB-A/USB-C interface of your computer or notebook and it can be used without any driver. Note: It needs to be used with the acquisition software
- Compatible with USB-A/USB-C interfaces, not limited by computer interfaces, compatible with Windows and Mac OS, supports NTSC, PAL and other video formats, and supports brightness, contrast, hue and saturation control
- Note: This video converter needs to be used with capture software, which can be downloaded free of chargge . We recommend OBS Studio or PotPlayer for Windows and QuickTime Player for Mac. Please feel free to contact us if you need technical support.
MP4 is commonly convenient for phones, TVs, and general playback. MKV can be a useful container when you need to keep multiple tracks or subtitles together, but device and editing-app compatibility varies. A format conversion may also re-encode the media, taking time and potentially reducing quality; changing the container without re-encoding (remuxing) does not inherently do so. Check whether the downloader is offering a direct stream, a merged file, or a converted output if exact quality matters.
Where 9xbuddy is more convenient
If you need one occasional clip and do not want to install desktop software, the 9xbuddy website has a simple copy-link, choose-format, download workflow. That convenience is real, but it comes with more uncertainty: the service may be unavailable, a site change may break link parsing, and a browser page can present advertisements, redirects, or misleading download buttons.
Third-party coverage has raised concerns about advertising and reliability, while 9xbuddy’s own pages make broad safety claims. Neither type of claim amounts to a security audit. It is more accurate to say that the web version carries browser-page and domain-verification risks, not that every 9xbuddy-branded product is malicious.
Rank #3
- 【4K HDMI Input, 2K@30Hz Recording】Powered by a true USB 3.0 high-speed interface, the capture card supports up to 4K@30Hz HDMI input and records at 2K@30Hz or 1080P@60Hz. Perfect for gamers, streamers, and professionals who need crisp, smooth video for live streaming, gameplay recording, or online meetings.
- 【Ultra Low Latency Screen Sharing】Built with a premium aluminum alloy shell and advanced chipset for stable heat dissipation, ensuring ultra-low latency transmission. Capture high-quality video and dual-channel audio in real time—no lag, no frame drop—ideal for Twitch, YouTube, or OBS streaming.
- 【Easy Plug and Play, Compact & Portable】No driver or external power required—just plug and play via USB 3.0 or Type-C connection to your Windows or macOS computer. Lightweight and compact design makes it easy to carry for outdoor streaming, live shows, or mobile recording setups.
- 【Wide Compatibility & Multi-Device Support】Compatible with Windows 7 8 10 11, macOS, Linux,Android and supports most popular software such as OBS, Zoom, VLC, Twitch Studio, and more. Works seamlessly with PS4, PS5, Xbox, Switch, DSLR cameras, TV boxes, and other HDMI-output devices for streaming to YouTube, Twitch, etc.
- 【What You Get】Includes: HDMI Capture Card, USB 3.0 to USB-C Adapter, User Manual. Tips: Make sure your tablet’s OTG function is enabled before connecting. Test your HDMI device with a monitor first to confirm video and audio output, then connect to the Video Capture Card for recording.
Quality: “4K” is not a guarantee
Both products advertise resolutions up to 8K when supported, but the label describes pixel dimensions—not the complete quality of the file. A source must actually offer a 4K or 8K stream, and the downloader must be able to retrieve it. Bitrate, codec, frame rate, compression, and audio quality also affect the result. A lower-resolution file with a higher bitrate can look better than a heavily compressed 4K file.
Some platforms deliver high-resolution video and audio as separate streams. A downloader may need to merge them, and a web tool may offer different choices from a desktop application. A resolution label also does not guarantee a combined audio-and-video file, original bitrate, or a particular codec. Neither tool should be assumed to bypass DRM, account restrictions, or other access controls.
Safety and privacy: compare the distribution paths, not slogans
4K Video Downloader Plus has a more identifiable software-distribution path: a named vendor, an official product page, and stated system requirements. The vendor says its application is free of adware and malware, but that is a vendor claim rather than independent certification. Download only from the official site; avoid cracked or repackaged installers, check the publisher, and keep your operating system current.
Rank #4
- 【1080P HD High Quality】Capture resolution up to 1080p for video source and it is ideal for all HDMI devices such as PS4, PS3, Xbox One, Xbox 360, Wii U, DVDs, DSLR, Camera, Security Camera and set top box. Note: Video input supports 4K30/60Hz and 1080p120/144Hz. Does not support 4K120Hz/144Hz. Output supports up to 2K30Hz.
- 【Plug and Play】No driver or external power supply required, true PnP. Once plugged in, the device is identified automatically as a webcam. Detect input and adjust output automatically. Won't occupy CPU, optional audio capture. No freeze with correct setting.
- 【Compatible with Multiple Systems】suitable for Windows and Mac OS. High speed USB 3.0 technology and superior low latency technology makes it easier for you to transmit live streaming to Twitch, Youtube, Facebook, Twitter, OBS, Potplayer and VLC.
- 【HDMI LOOP-OUT】Based on the high-speed USB 3.0 technology, it can capture one single channel HD HDMI video signal. There is no delay when you are playing game live.
- 【Support Mic-in for Commentary】Rybozen capture card has microphone input and you can use it to add external commentary when playing a game. Please note: it only accepts 3.5mm TRS standard microphone headset.
With 9xbuddy, separate the risks by product. The website exposes you to page ads, redirects, and fake-button confusion. A browser extension has access and privacy implications distinct from a website. The Android app has its own Play listing and developer-provided data-safety declarations; Google Play notes that such disclosures come from developers and can vary by use, region, and age. None of these should be treated as proof that every domain or app using the 9xbuddy name is trustworthy.
- Verify the exact domain and publisher before entering a link or installing anything.
- Ignore pop-ups asking you to install a codec, helper program, or unrelated extension.
- Check the downloaded filename and extension; scan unexpected files before opening them.
- Do not grant notification permissions or install extra software merely to retrieve a video.
Supported sites and device compatibility
4K Download lists supported platforms including YouTube, Vimeo, TikTok, Facebook, SoundCloud, Twitch, Bilibili, and Dailymotion. Its currently listed desktop requirements are Windows 11 or newer, macOS 12 or newer, and Ubuntu 22.04 64-bit with GNOME or newer. Check the product page for current requirements before installing.
Recommended Free Tools
9xbuddy.pro claims more than 10,000 supported sites and names services such as YouTube, Instagram, TikTok, Vimeo, Reddit, Twitch, and SoundCloud. Its Firefox extension says availability depends on the site and media source. A large site-count claim is not a guarantee that a particular page will work today, and it cannot be directly compared with a vendor’s named platform list. Online services and desktop downloaders can both stop working when platforms change their streaming or access systems.
Best Value
- [HDMI Capture] Record or Live Stream Audio & Video at up to 1080P from HDMI Sources up to 4K 30 FPS (NOTE: Does NOT Support HDMI Sources That Are Copyrighted or Content-Protected)
- [AV & S-Video Capture] Record or Live Stream from Analog Video Sources Such As VCR, VHS, Camcorders, Video8, Hi8, DVD, Gaming Systems (Device Automatic Upscales to HD Resolution)
- [USB-C Plug & Play] Modern USB-C Plug and Play Interface (Works with Laptops and Desktops - Full Size USB-A Adapter Included)
- [Software Included] Video Capture & Live Streaming Software & Step By-Step Instructions Included
- [Compatible with PC, Mac, & Linux] Works with Windows 10/11/12, OS X 11.0 or higher, and Ubuntu 14.04 or higher
Price and licensing
4K Video Downloader Plus has a free Starter tier with quantity limits. The purchase page examined lists Lite at $15 per year, Personal at $25 lifetime, Pro at $45 lifetime, and a Bundle at $65 lifetime. Prices can vary with location, tax, and promotions, so treat those as page-specific signals and confirm the current amount on the official purchase page before paying. The vendor says lifetime licenses cover up to three computers, Lite is for one device, and online purchases have a 14-day refund period. It defines “lifetime” as the lifetime of the product, not the purchaser’s lifetime or a promise of indefinite support.
The 9xbuddy website advertises free use, while its Android listing says the app initially provides five free downloads. Those are different products and offers; do not assume one pricing model applies across the website, extension, and app. The Android listing does not advertise a recurring subscription, but app terms can change.
How to use each option
4K Video Downloader Plus
- Get the installer from the official product page and install it on a supported system.
- Copy the URL of a supported video, playlist, channel, or page.
- Open the application and select Paste Link.
- Choose the available quality, format, subtitles, audio track, and download mode.
- Confirm the destination folder and start the download.
- Check the resulting file for the expected resolution, audio, subtitles, container, and filename.
9xbuddy website
- Confirm the exact domain you intend to use; do not follow an unexpected redirect to a look-alike page.
- Paste the source URL into the downloader.
- Choose from the formats and quality options actually offered for that source.
- Ignore unrelated ads and lookalike download buttons; verify the downloaded file’s name and extension.
- If the page offers an executable, codec, or extra extension, do not install it to retrieve the media.
The website describes a similar three-step process on its download instructions page. Available options can vary by source.
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If a download fails
- Confirm the video plays normally in a browser and try its canonical page URL instead of a shortened or tracking link.
- Check whether it is private, age-restricted, region-limited, live, login-gated, or otherwise access-controlled.
- Update the desktop app or extension, then try a different available format or quality rather than assuming the highest option will work.
- Test an ordinary public video. If that succeeds, the issue is likely specific to the original source or its restrictions.
- For 9xbuddy, identify which product failed—the website, Firefox extension, or Android app—before troubleshooting further.
- Do not install a “helper” executable from a pop-up. A failed attempt is not proof that a service is permanently broken.
Which one should you choose?
- One occasional download, no installation: 9xbuddy’s website is more convenient, if the exact site is available and you are comfortable with browser-page risks.
- Regular downloads, playlists, channels, subtitles, or batches: choose 4K Video Downloader Plus for a more repeatable desktop workflow.
- Android and YouTube: do not assume the Google Play 9xbuddy app can download YouTube; its listing says that feature is unsupported in that version.
- Sensitive links or predictable professional workflows: avoid relying on an online downloader with unclear domain identity and variable availability. Consider a tool with a distribution and support model suited to your requirements.
- Open-source or command-line preference: yt-dlp is a configurable, open-source command-line option with a steeper learning curve. JDownloader focuses on queues and link management; ClipGrab offers a simpler desktop workflow. For conversion, compression, or editing as well as downloads, Wondershare UniConverter is a broader paid media suite. These are different categories, not guaranteed winners for every source.
Use downloads responsibly
Download only material you own, have permission to save, or that the platform explicitly allows you to download. A publicly accessible URL does not itself grant permission to copy a work. Respect copyright, platform terms, privacy, and access controls; do not use a downloader to bypass DRM, paywalls, or authentication restrictions.
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.
