SKU: 42325384963

HKM-386451 4K HDMI to USB3.0 Video Capture Card for Streaming and Recording

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Description

HKM-386451 4K HDMI to USB3.0 Video Capture Card for Streaming and RecordingExperience seamless streaming and recording with the HKM 386451 4K HDMI to USB3. 0 Video Capture Card. This compact and user friendly device is designed for both professionals and enthusiasts who demand high performance video capture. Whether you're live streaming gameplay, recording tutorials, or producing online content, this capture card delivers exceptional quality and versatility. With the capability to capture a single HD HDMI video signal, the

Experience seamless streaming and recording with the HKM-386451 4K HDMI to USB3.0 Video Capture Card. This compact and user-friendly device is designed for both professionals and enthusiasts who demand high-performance video capture. Whether you're live streaming gameplay, recording tutorials, or producing online content, this capture card delivers exceptional quality and versatility.

With the capability to capture a single HD HDMI video signal, the HKM-386451 allows you to record video signals up to 1080p at 60Hz, while supporting HDMI input of up to 4K at 30Hz. It offers robust compatibility with multiple operating systems including Windows 7, 8, 8.1, 10, Linux OS, and Mac OS. Simply connect it via a USB3.0 interface, which boasts impressive bandwidth of 300 to 350MB/s, while also maintaining backward compatibility with USB2.0.

The HKM-386451's design ensures an effortless setup, requiring minimal installation while supporting various USB3.0 chipsets. It automatically detects the input video and audio formats, adjusting the output size and frame rate as necessary. Plus, the device supports both MJPEG and YUY2 formats and adheres to UVC and UAC protocols, providing an easy integration with third-party playback and acquisition software.

For those who strive for clarity, the RGB color range of 0 to 255 ensures vibrant color reproduction, while advanced features like online firmware upgrades enhance product compatibility over time. Notably, the capture card enables the connection of two acquisition sticks to a single PC for expanded capabilities.

Elevate your streaming and recording experience with the HKM-386451 4K HDMI to USB3.0 Video Capture Card. It is the ideal solution for bringing your content to life with professional-grade quality and reliability.

[Product name] 4K HDMI to USB3.0 video capture card

[Product alias] Live video capture card, USB3.0 video capture card, HDMI capture card, HDMI high-definition video capture box

[Product introduction] 4K HDMI to USB3.0 video capture card, easy to carry, superior performance, good compatibility, simple installation, powerful functions, etc., can collect 1 HDMI input signal; compatible with Windows 7, 8, 8.1, 10 or Later, USB3.0 interface of Linux OS, Mac OS, compatible with a variety of USB3.0 chipsets (Intel, Renesas, ASMedia, Fresco Logic), backward compatible with USB2.0, connected to PC or mobile phone via USB3.0 interface , Through many free third-party playback and acquisition software, to achieve preview, recording, acquisition, live broadcast and other functions, HDMI video capture conforms to UVC and UAC standards, easy to use.

【Features】

1. It can capture a single HD HDMI video signal;

2. Recording video signals up to 1080p/60Hz, HDMI input supports 4K/30Hz;

3. Support MJPEG and YUY2;

4. Support UAC&UVC protocol, support 48 KHz PCM audio sampling rate;

5. Some win7 need to install the driver;

6. Compatible with Windows 7, 8, 8.1, 10 or later, Linux OS, Mac OS operating system;

7. USB3.0, 300~350MB/s bandwidth, compatible with USB 2.0 (40MB/s bandwidth);

8. It can automatically detect the input video format and automatically adjust to the set output size and frame rate;

9. It can automatically detect the input audio format and convert it to 48KHz PCM audio;

10.2 acquisition sticks can be used on one PC;

11. Support firmware online upgrade, better improve product compatibility;

12. The picture quality is clearer, the RGB color range is 0~255, and the delay is better;

13. Support all third-party player software compatible with UVC and UAC protocols;

【System Requirements】

Computer system requirements:

Windows® 10 / Windows 8.1 / Windows 7 (SP1);

Desktop computer: Intel® Core™ i5-4440 3.10 GHz + NVIDIA® GeForce® GTX 660 or above;

Notebook: Intel Core i7-4810MQ + NVIDIA GeForce GTX 870M or above;

4 GB RAM (8 GB recommended);



Mobile phone system requirements:

Android phone (supported by newer phones);

Only supports USB2, not USB3. (The reason is that the android UVC driver does not support USB3);

If it is a USB Android phone, you need to force a pure USB2 cable into USB2 mode to use it;

【Product Specifications】

1. Input interface: 1 HDMI interface;

2. Output interface: USB3.0, 300~350MB/s throughput;

3. HDMI input: 4K/30Hz,1080P/60, 59.94, 50, 30, 29.97, 25, 24, 23.98,1080i 50/60, 720P 50/60,480P,576P1280x1024, 1280x960, 1024x768, 800x600, 640x480;

4. HDMI audio input: LPCM audio signal;

5. HDMI input format: compatible with HDMI1.4 standard, the maximum bandwidth supports 225MHz 4K/30Hz, 12bit deep color;

6. Output format Resolutions: 640x480/720x480/720x576/800x600/1024x768/1280x720/

1280x960/1280x1024/1366x768/1360x768/1440x900/1400x900/1680x1050/1920x1080

frame rate: 25/29.97/30/50/59.94/60 fps;

7. Video sampling rate: HDMI: 165MHz;

8. Audio and video capture: it complies with UVC (USB video class) and UAC (USB audio class) standards;

9. Output color space: YUV, RGB;

10. Support operating system: Windows 7, 8, 8.1, 10 or later, Linux OS, Mac OS;

11. Software compatibility:

Adobe Flash Media Live Encoder (Windows, OS X);

Real Producer Plus (Windows); VLC (Windows, OS X, Linux);

QuickTime Broadcaster (OS X); QuickTime Player (OS X), OBS, PotPlayer and etc.

12. Power consumption: <= 2.5W;

13. Working temperature: 0-70 degrees Celsius;

14. Storage temperature: -20-120 degrees Celsius;

15. Storage humidity: 5%-90%;

【Interface Description】

1. Signal indicator: When the device captures video normally, the indicator lights up.

2. Power indicator: When the device is connected to the USB port of the computer, the indicator lights up.

3. HDMI input: This slot is where you can connect HDMI output sources such as cameras, camcorders, game boxes, and IPTV boxes.

4. USB3.0 output: This slot is where you connect to the USB3.0 input of your computer or notebook.

【Size】113*61*13mm;

【Colour: Black


Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 42325384963

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4.5 ★★★★★
Based on 22 reviews
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Product Reviews
S
Verified Purchase
Shattered Glass
Grantham, US
★★★★★ 5
Made cleaning so much less stressful!
Size: C20
Love, love, LOVE! As a multi-pet home, I cannot stress how much less stressful cleaning is! Two cats, and a German Shepard, I run this once a day for the vacuum and every other for the mop. vacuum has multiple settings based on needs. For myself I run it on standard (level 2/4) to pick up the loose hair that has fallen. The vacuum is also great for litter messes, though I do usually run it on turbo (level 3/4) for the better suction with litter. I was amazed the first time I watched the vacuum run over a large tuft of Shepard hair with ease! It has made cleaning so much easier The mop aspect is mediocre, it does help don't get me wrong. But even on the high (level 2/2) it is meant as a maintenance rather than a full clean. Meaning some dirt, dander, dust it will do fine with. But sticky spills... unlikely. The parts are super easy to change. The vacuum bag slides in and out, whereas the mop pads are similar to a Velcro and peel off easily when wanted. As far as hair; it does well at sweeping it up. Though the first few runs I had to clean the roller each session due to the amount of hair. The ends of the roller brush come off easily, twist/pull and this allows you to remove any hair twisted around the piece. Super easy to clean and put back together! Additionally, the only issue I have with the vacuum is that it likes to run over the cat toys that I didn't even know we still had! Ha! It will generally stop and wait for assistance if it runs one over or gets stuck which is as simple as removing the toy and pressing the power button again. Set up was easy as well with a step-by-step instruction through the app. Unboxing to use only took at most 10 minutes! I have noticed others comment on the price... I got this on sale for $350. Retail among other sellers is $700. I think for the price I purchased this is definitely worth the cost! The initial vacuum bag was just replaced after 3 weeks, and it could have lasted probably another full week before demanding I change it. Though this will vary based on home to home. The vacuum can be noisy at time, though much less than I expected after watching some video reviews. The loudest part of it is the vacuum running into furniture though. I think the mapping feature works well but given we have pets and are often moving things around our vacuum is often repositioning and re-mapping the rooms as needed, it does this automatically (after bumping into things).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 27, 2025
J
Verified Purchase
Jared Tracy
Natrona Heights, US
★★★★★ 5
Replacement unit working better than the original
Size: C20, Size: C20
EDIT: Replacement unit working better than the original! The seller offered a full refund, and since I had another vacuum of there's (different model) that didn't have any of the same problems, I asked for a replacement instead. The other vacuum has been great! Replacement was in hand shortly after returning the defective unit. None of the same issues as the original. It's not like this is the greatest robot vacuum ever invented, but for the price this is a rock solid vacuum and mop that's now been keeping our floor spotless for more than 2 months! I feel bad for the old vacuum... :-( I've worked in manufacturing before, so I know you'll have a dud unit every so often. Unfortunately, I received one of those. Fortunately, Eufy seems to be a company that stands by it's products. I'm very pleased with the quality of their customer service and of the replacement unit. ORIGINAL: No longer runs: Laser sensor malfunction after just 5 months. This product was maybe 3 out of 5 to begin with. It didn't do a very good job at avoiding cables or animals. Nor did it do a good job at getting corners, but it did run when scheduled. After just 5 months, it rolls out from the station and stops. I get a notification that the Laser sensor may be blocked. There's nothing blocking the sensor. I've cleaned the lens, and the issue still persists.
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Reviewed in the United States on October 17, 2025
I
Verified Purchase
Ikechuwku Ibe
Charlottesville, US
★★★★★ 3
My Experience With The C20
Size: C20
Initial Performance (First 3–4 Months) For the first three to four months, the Eufy C20 worked exactly as advertised. It kept the entire first floor of my home—100% tile—spotless. Navigation was smooth, battery life was consistent, and it completed full cleaning cycles without issues. During this period, I was very satisfied with its performance. Battery & Performance Decline After about four months, the battery life and overall reliability started to decline noticeably. The robot began dying in random locations instead of returning to the dock when the battery was low. At times, it would simply stop in the middle of a cleaning cycle and remain in place until the battery was completely drained, forcing me to manually pick it up and return it to the dock. Navigation & Software Issues The navigation system also became unreliable over time. The robot would occasionally lose track of where it was, run headfirst into walls or corners, and fail to properly reroute itself. Pressing the home or power button to resume a task was inconsistent—sometimes it would restart, other times it would just sit there unresponsive. Home Environment & Maintenance My home does not have large carpets or difficult obstacles, so there’s no clear environmental reason for these issues. I also perform weekly to bi-weekly maintenance on the robot, including cleaning sensors and components, but this has not resolved the ongoing problems. Overall Verdict Overall, the Eufy C20 is a decent robot vacuum/mop for short-term use, but based on my experience, it does not hold up well long-term. I expected at least a full year of reliable performance, but the noticeable decline after only four months was disappointing, especially when paying over $400 for the product. It’s a good option for temporary or light use, but I would hesitate to rely on it as a long-term cleaning solution. Hopefully the warranty will cover whatever malfunctions the device is going through.
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Reviewed in the United States on December 9, 2025
K
Verified Purchase
Kindle Customer
Port Orchard, US
★★★★★ 2
Not worth it
Size: C20
In the beginning I thought this vacuum was great. The longer I use it the more annoyed I am. At this point I often find myself using my old cannister vacuum or broom and manually mopping despite having a several hundred dollar appliance that is supposedly nearly autonomous in these tasks. Customer service has been mostly useless and often concludes the vacuum is working as it should. If this is the best it is intended to work, that's an issue. Here are the problems I've noticed: 1. Many moving parts on the underside of the robot end up winding up human hair and other debris. In most of these places, it isn't possible to disassemble to the point of easily pulling out the hair. I desire to run the vacuum once weekly for a ~1400 sq ft apartment and at this rate, once or twice a month I need to be picking at the component parts with the tip of a knife to try to wrestle the hair tourniquets off of where its wound up. If I don't do that, the vacuum is incredibly squeaky and loud. 2. Debris accumulates in the base station tray and clogs it up such that base station needs to be cleaned regularly or else the mops stay too wet and do not dry. Again this is a once or twice per month task. Otherwise you could run an entire dry cycle on the mops and still come out with soaking wet mops. Do I remember to check the mops every time to make sure they did indeed dry? No, so then soggy nasty mops sit there for a long time. Kind of defeats the purpose of self washing and drying. 3. Possibly related to the above or not, I really can't tell -- the mops start out too wet and leave little puddles that dry into unsightly water spots on the floor when it first begins mopping. Then it quickly loses all water and seems to be doing basically nothing. Adjusting the frequency of return helps slightly with the second problem but not the first, and I end up passing over with a manual mop every time to clear standing water and eliminate water spot stains. 4. Poor emptying of dustbin resulting in poor suction and accumulation of debris at the site of the base station. Seriously, half the time even on turbo suction this vacuum LEAVES more dust on rugs in its wake than it picks up. I can clean my doormat better with a quick sweep with the broom. When it gets back to the base station to empty, half the time it flings debris out from the base station at high speed and I have to sweep up its mess. Manually emptying the on-board dust bin helps, but isn't supposed to be necessary -- this thing is allegedly self emptying and certainly makes quite enough sound during the emptying phase to have you believe it is emptying the dustbin. Add one more once or twice monthly maintenance requirement that isn't supposed to be needed. 5. Dustbunnies, rather than getting sucked up, attach to various parts of the bottom of the vacuum contributing to other problems described above. As soon as it goes over a rug, the rug pulls all the dustbunnies off, now they are on your rug instead of the wood floor. If the vacuum makes it back to the base station with the dustbunnies attached, now they are clogging up the mop tray. 6. Sometimes cannot figure out how to reseat itself at home base. It finds the base station, then just gets stuck in a loop of rearing up and heading towards it and missing. I have to sometimes out it back to charge manually. All in all, it really needs a lot of attention for what is meant to be a pretty independent machine. Customer service flat out told me the mopping is functioning as expected. Gross, I don't know why you would think any customer wants puddles of water left behind that can damage wood floors or leave unsightly stains, but ok. Only ever offered to send a replacement vacuum if I pack this one up to return. If it's working properly, I don't want a replacement, I want a refund! Let me go back to my old cannister vacuum and hand mop in peace. Maybe the models at higher price points are better without these issue; I wouldn't know. Edited to add, the manufacturer reached out to me and was able to set me up to try out the S1 ad an alternative due to these concerns. I am bumping the review from one star to 2 for the strong customer service. In my opinion, the S1 is a much stronger performing vacuum/mop combo.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 28, 2025
K
Verified Purchase
Kayla P
Whiting, US
★★★★★ 5
Good buy
Works well with my Eufy C10, very easy to install
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 26, 2026

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