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How to reset the EDID of HDMI capture device

Pro Capture, Eco Capture Family Call the driver panel of capture card. In the HDMI tab page of the driver panel, click Reset under EDID. USB Capture (Plus) Family Open the utility software USB Capture Utility V3. In the HDMI tab page of USB Capture Utility V3, click Default under Capture device EDID. Relevant Topic: Use the driver panel of capture card to edit EDID Relevant Topic: Use USB Capture Utility V3 to edit EDID

Screen shows "No Signal" or "Unsupported Signal" when I use Magewell capture device

1Check if the resolution of the signal source exceed the processing range of the capture device Please refer to the tech spec of the capture device on the Magewell official website. The highest supportable resolution can be found in the Input Features section. 2Check if the signal source works normally Connect the signal source to other receiving devices (such as TV). If the other receiving devices cannot display videos normally, the problem should come from the source. Or connect your capture device with other signal source. If the capture device works normally, the problem should come from the original source. 3Check the status of cables and interfaces Use the recommended brands of cables or use the Mini Repeater HDMI 4K to enhance the signal. Mind the length of cables. If the cable is too long, the quality of signal transmission will be damaged. For USB Capture (Plus) devices, make sure they are used with the original USB 3.0 cables provided by Magewell. Check if all interfaces are firmly connected. If there are any worn interfaces, use alcohol pads to wipe the interfaces. If there is a adapter between the signal source and the capture device, replace the adapter. If there is a signal splitter, connect the source directly to the capture device. 4Steps for HDMI devices Make sure the signal source is not encrypted by HDCP because HDCP signals are not allowed to be captured according to the law. Reset the EDID. (See How to reset the EDID of HDMI capture device)

Do Magewell capture devices support alternately outputting the top/bottom field of interlaced signals?

Both USB Capture (Plus) and Pro Capture Family products support alternately outputting the top/bottom field of interlaced signals. Methods are as follows: For USB Capture (Plus) Family, open the USB Capture Utility V3 software, click the Video tab, and then set the Deinterlace property to Weave. For Pro Capture Family, refer to the "CaptureByField" example provided in Magewell SDK.

Captured video has color distortion problem

1Check the color format of the signal source Check the color format of the video output from your signal source according to the user manual of the signal source. 2Set the supported color formats of the capture device For USB Capture (Plus) Family, download the utility software USB Capture Utility V3, and then refer to this article to add the color format of the signal source to your capture device. For Pro Capture and Eco Capture Family, refer to this article to add the color format of the signal source to your capture device. 3Select the appropriate color format in the video capture software In your video capture software, select the newly added color space and save the settings. Then check whether the color of the video is displayed normally.

Do Magewell products support HANC/VANC data extraction?

Both the Pro Capture and Eco Capture Family's SDI capture cards support HANC/VANC data extraction. Note that you must use the Magewell SDK to do this.

Captured video is blurrier than the original video

Follow these steps to troubleshoot problems. 1If the Resolution, Color format and Quantization of the captured signal is consistent with those of the input signal? USB Capture (Plus) Family Open the utility software USB Capture Utility V3. In the Info tab page, view the Video signal format, which consists of the resolution and frame rate of the input signal. In the Video tab page, view the Color format and Quantization in the INPUT section. In the Video tab page, set the Color format and Quantization in the CAPTURE section to the value of the same properties in the INPUT section. In your video capture software, set the Resolution, Color format (if available) and Quantization (if available) of the captured signal to the value of the same properties of the input signal. Pro Capture, Eco Capture Family Call the driver panel of capture card. In the Video tab page, view the Input signal format, Color format, and Quantization in the Input section. The input signal format is displayed next to the Input label, and includes the resolution and frame rate of the input signal. In the Video tab page, set the Color format and Quantization in the Capture section to the value of the same properties in the Input section. In your video capture software, set the Resolution, Color format (if available) and Quantization (if available) of the captured signal to the value of the same properties of the input signal. 2If the captured image is scaled in the video capture software? If video capture software allows users to set the scaling, make sure the scale factor is 100%. 3If the input signal is interlaced signal? USB Capture (Plus) Family Open the utility software USB Capture Utility V3. In the Info tab page, view the Video signal format. If the video signal format contains "p", the input signal is a progressive scan signal; if it contains "i", the input signal is a interlaced scan signal. For interlaced scan signal, open the Video tab page, and then set Deinterlace to Weave, i.e. no deinterlacing. Pro Capture, Eco Capture Family Call the driver panel of capture card. In the Video tab page, view the input signal format next to the Input label. If the video signal format contains "p", the input signal is a progressive scan signal; if it contains "i", the input signal is a interlaced scan signal. For interlaced scan signal, open the Video tab page, and then set Deinterlace in the Capture section to Weave, i.e. no deinterlacing.

When I use the computer's graphics card as the input source, the actual resolution of the output video is different from the resolution I set

To solve the problem, open the control panel of the graphics card, and then set the Scaling to Customize Aspect Ratio.

Errors about uvcvideo module occurs when opening USB Capture (Plus) devices on Linux

When opening USB Capture (Plus) devices on Linux, the following error messages are shown: uvcvideo: Non-zero status (-71) in video completion handler. uvcvideo: Failed to resubmit video URB (-1). uvcvideo: Failed to resubmit video URB (-1). This problem is known to happen in three situations: The computer's power supply module is underpowered. Other devices around the capture device caused interference. When using GStreamer as the video capture software, the Videosink doesn't support Zerocopy. You can try to fix the problem by changing the kernel or plugging the USB port into the rear panel of your computer.

When I record video captured from USB Capture (Plus) devices with OBS, the audio and video are out of sync

Check the usage of GPU and CPU when recording video with OBS. If the values are too high, reduce the encoding parameters. Record a video clip with Capture Express to see if the synchronization issue occurs. In OBS, do not select audio devices in the properties window of video capture device. It is recommended to add an independent audio input device and select the Use Device Timestamps checkbox.

Short FAQs about USB Capture (Plus)

What is the latency of USB Capture (Plus) device? Please refer to this article: USB Capture Latency Test. Which software can record 4K videos that are captured by USB Capture HDMI 4K Plus? Magewell Capture Express, VMix, OBS, XSplit Broadcaster, Meridix Broadcast Producer, etc., support 4K video recording. Can't capture audio when USB Capture HDMI Gen2 is used via the USB 3.0 expansion card of a VIA chip It is recommended to update the VIA chip driver to version 4.90A or above. My computer does not have a USB 3.0 port. How can I use the USB Capture (Plus) device? It is recommended that you purchase a USB type C to USB 3.0 adapter. Is USB Capture (Plus) compatible with USB 2.0? Yes. But the limited transmission bandwidth of USB 2.0 cannot guarantee the transmission of high frame rate or high resolution signal. Can multiple USB Capture (Plus) devices be connected on one computer? Yes. To ensure that the bandwidth won't be affected, make sure each USB capture device can be connected to an independent USB 3.0 Extensible Host Controller. You can check whether your computer has multiple independent USB 3.0 Extensible Host Controllers in Device Management. Do USB Capture (Plus) devices support using a phone or tablet as a source? Yes. Apple devices can use Lightning to HDMI cables to output screen signals. Android devices can use MHL adapters to output screen signals. When the computer connects with multiple USB Capture (Plus) devices, how are the devices sorted in the system? Devices are sorted by the time they are loaded by the system. Does the 3.5mm Jack interface on USB Capture HDMI (4K) Plus support Line Input? This interface can only be used to capture microphone audio. The level of the Line In audio is at least 50dB above that of the microphone audio. Misuse may cause damage to the hardware components of your capture device. What is the maximum frame rate when capturing 4K video using USB Capture HDMI 4K Plus? USB Capture HDMI 4K Plus supports 4Kp60 video input. However, limited by the bandwidth of USB 3.0, the maximum frame rate can only reach 30 fps when capturing 4K video in NV12 color format. What's the meaning of different statuses of indicator light? Please refer to this article: Status of the Indicator Light on USB Capture (Plus) device. Which brand of chipset is compatible with USB Capture (Plus) devices? USB Capture (Plus) devices are compatible with chipsets from Intel, Renesas, ASMedia and Fresco Logic. Only one audio channel can be found when I use a capture device that supports multiple audio channels on the macOS 10.13.1 system Please upgrade your system to macOS 10.13.2 and above. The captured 4K NV12/I420 video has ghosting problem Please update your firmware to the latest version. Will the capture quality and product life of device be affected by high working temperature? The housing temperature of Magewell USB capture device may be higher because of its metal shell and special cooling design. As long as the operating ambient temperature is between 0 to 50 ℃, it won't affect the capture quality and product life.