The best video cable for your TV largely depends on the features of your TV and the devices you're connecting. However, HDMI is typically the best option for most modern TVs. Here's a breakdown of the best choices depending on your needs:

1. HDMI Cable (for Most TVs)

a. Why it's best: HDMI is the most widely used video cable for modern TVs because it supports both high-definition video and audio over a single cable. It's the default choice for most media devices (such as gaming consoles, streaming devices, Blu-ray players, and laptops).

b. Key features:

Supports 1080p, 4K, and even 8K resolution (with HDMI 2.1).

Supports high refresh rates (e.g., 120Hz for smooth motion in gaming).

Can carry multi-channel audio (e.g., Dolby Atmos, DTS).

Easy plug-and-play setup.

HDMI 2.1 supports advanced features like Variable Refresh Rate (VRR), Auto Low Latency Mode (ALLM), and eARC for advanced audio systems.

Best Choice: HDMI 2.1

If your TV supports 4K or 8K resolution, especially at 120Hz or higher, and you want the best quality for gaming or watching high-definition content, go with HDMI 2.1. This version is future-proof for next-gen consoles, high-performance PCs, and high-quality TVs.

When to choose a different HDMI version:

HDMI 2.0: If your TV supports 4K but not at 120Hz, HDMI 2.0 is sufficient for most viewing purposes, including 4K at 60Hz and HDR content.

HDMI 1.4: This is an older version, mainly suitable for 1080p content, but not ideal for 4K, especially if you're into gaming or watching UHD movies.

2. For Gaming: HDMI 2.1

a. Why it's best for gaming: HDMI 2.1 offers significant improvements for gaming, such as higher frame rates (up to 120Hz at 4K), support for VRR (Variable Refresh Rate) for smoother gameplay, and Auto Low Latency Mode (ALLM) for reduced input lag.

b. Features:

4K at 120Hz or 8K at 60Hz.

Support for HDR (High Dynamic Range), including Dolby Vision, for improved picture quality.

eARC (enhanced Audio Return Channel) for better sound quality with compatible sound systems.

3. For 4K TVs: HDMI 2.0 or 2.1

HDMI 2.0 is great if you're primarily using 4K content at 60Hz. However, for 4K at higher refresh rates or for future-proofing, HDMI 2.1 is the better option.

HDMI 2.1 allows for 4K at 120Hz and supports better HDR standards (such as HDR10+, Dolby Vision), which is particularly useful if you're gaming or watching HDR movies on a high-end TV.

4. For 8K TVs: HDMI 2.1

If you have an 8K TV, HDMI 2.1 is a must because it supports the bandwidth required for 8K resolution (60Hz) and features like dynamic HDR, which are essential for 8K content.

HDMI 2.1 is also compatible with next-generation gaming consoles like the PlayStation 5 and Xbox Series X, which support 4K at 120Hz or 8K resolution.

5. For Older TVs (1080p/720p):

If your TV is an older model with only 1080p or 720p resolution, you don't need the advanced features of HDMI 2.1. HDMI 1.4 or 2.0 should be sufficient for basic viewing, but HDMI 2.0 is better for future-proofing.

6. Other Video Cables (for Legacy TVs):

Component Video (YPbPr): Older TVs may use component cables for HD resolution. This cable transmits video signals in three parts (Y, Pb, Pr) and is commonly found on older devices but doesn’t carry audio.

Composite Video (AV): This is a very old standard that supports only standard definition video (480p or lower). It's rarely used in modern setups but might be found on vintage or very low-end TVs.

7. USB-C / Thunderbolt (for Smart TVs with USB-C Ports)

USB-C is becoming more common on some newer devices, like laptops and high-end tablets. If your TV supports USB-C input (some smart TVs do), you can use a USB-C to HDMI cable or direct USB-C video output for a clean, high-quality connection.

Recommendations for Best Video Cable for Your TV:

For 4K/8K Smart TVs: HDMI 2.1 is the best for the highest resolutions and refresh rates, future-proofing your setup.

For Standard 1080p or 4K TV: HDMI 2.0 is still a solid choice, especially if you're using a regular streaming device or Blu-ray player.

For Gaming on 4K TVs: HDMI 2.1 is crucial for 4K gaming at 120Hz and smooth gameplay, especially with next-gen consoles like PS5 or Xbox Series X.

Additional Considerations:

Cable Quality: Choose a high-quality, well-shielded HDMI cable for reliable signal transmission. For longer cables (over 10 feet), consider active HDMI cables or HDMI signal boosters to prevent signal loss.

Certified Cables: Opt for certified cables like Ultra High-Speed HDMI (for 4K/8K content) to ensure you're getting a cable that meets the required standards for high-bandwidth video signals.

In short, HDMI 2.1 is the best video cable for modern TVs, especially if you have a 4K or 8K TV or plan to do gaming or watch high-quality content.