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What are some common causes of poor video quality and low resolution issues when using a DIY video wall, and how can I troubleshoot and resolve these problems?

**Pixel density affects resolution**: When combining multiple screens to create a video wall, the pixel density of each screen affects the overall resolution, with higher pixel density resulting in higher resolutions.

**Screen calibration is crucial**: Proper calibration of each screen in the video wall is essential to ensure uniform brightness, contrast, and color accuracy, affecting the overall image quality.

**HDMI signal quality matters**: The quality of the HDMI signal used to connect the screens affects the resolution and image quality, with higher-quality cables and connectors ensuring minimal signal degradation.

**Refresh rates impact smooth playback**: The refresh rate of each screen, typically measured in Hz, affects the smoothness of video playback, with higher refresh rates (e.g., 60Hz) providing smoother playback.

**Aspect ratio affects scaling**: The aspect ratio of the content and the screens affects how the image is scaled, with different ratios requiring different scaling settings to maintain image quality.

**Resolution scaling algorithms vary**: Different devices and software use various algorithms to scale resolutions, which can affect the final image quality, with some algorithms being more effective than others.

**Syncing screens is crucial**: Synchronizing the screens in a video wall setup is essential to prevent tearing, jerking, or other artifacts, requiring precise timing and synchronization of the HDMI clocks.

**Video wall processors can enhance**: Video wall processors can enhance the image quality, provide features like image scaling, and optimize the video wall configuration for better performance.

**Mounting and alignment are critical**: Proper mounting and alignment of the screens are essential to ensure a seamless and uniform image, with minor misalignments affecting the overall image quality.

**Maintenance is key to longevity**: Regular cleaning and maintenance of the screens, including avoiding direct spraying of liquids, help extend the lifespan and maintain image quality.

**Content source resolution is crucial**: The resolution of the content source affects the final image quality, with higher-resolution sources providing better image quality when upscaled.

**Screen technology affects image quality**: The type of screen technology used (e.g., LED, OLED, LCD) affects the image quality, with different technologies offering varying levels of brightness, contrast, and color accuracy.

**Video wall software can optimize**: Specialized video wall software can optimize the image quality, provide features like content scheduling, and offer advanced configuration options.

**Bezel width affects image continuity**: The width of the bezels (frames) around each screen affects the continuity of the image, with narrower bezels providing a more seamless experience.

**Image processing affects resolution**: Image processing techniques, such as upscaling or super-resolution, can enhance the resolution and image quality, but can also introduce artifacts if not implemented correctly.

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