Trade Show A/V Guide: Understanding Cables, Functions & Confident Connections

introduction

If you’re incorporating video or audio into your trade show booth, here’s something you need to know: most tech issues are preventable.

We’ve seen too many exhibitors lose precious time, and leads, troubleshooting cable connections and file formats while attendees walk by. Whether you’re renting a video wall, looping a demo, or just playing a simple slideshow, understanding the essentials of A/V formats, cables, and playback devices is key.

Let’s break it down, from the cables to the codecs.

audio & visual cables: what does what?

If you’ve ever rented A/V equipment from a supplier, these are the most common cable types you’ll encounter:

audio-only cables

• Dual RCA (red and white): basic left/right audio output for stereos and older A/V setups.
• 1/8" stereo (aux): connects phones, tablets, or laptops to speakers or amps.
• Optical digital: fiberoptic cable that sends high quality digital audio as pulses of light.
• XLR: used in pro audio (live events, high-quality microphones). Great for clean audio over long distances.

video-only cables

• VGA: old-school analog video connection (often blurry or poorly scaled).
• Component (red, green and blue RCA): now outdated, but still seen on older monitors.
• DVI: digital video signal, often used with computer monitors. Can be adapted to HDMI.

audio and video cables

• HDMI: the current gold standard. One cable for high-definition video and audio.
• Mini HDMI: found on tablets and DSLR cameras. Same output, just smaller.
• DisplayPort: supports video, audio, and high-speed data. Common on newer devices.
• Mini DisplayPort: common on MacBooks, can convert to HDMI if needed.
• USB-C: transmits video, audio, data, and power. Common on newer laptops and great for all-in-one-connectivity.

Cheap cables = risky business. Signal loss during a live event is the last thing you want. Always invest in quality connectors, especially if you're buying your own.

video formats and codecs: what to know before you hit play

Even with the right cables, your file still needs to be compatible with the device playing it. That’s where file formats and codecs come in.

what's a video codec?

Codecs are software that compress and decompress digital video. If your media player doesn’t have the right codec, your video won’t play. Simple as that.

common video file formats

• MP4: our go-to. High quality, small size, universally compatible.
• AVI: works across platforms, but can be huge and outdated.
• MOV: Apple device-friendly, high quality, but large file size.
• WMV: compressed for web, but often poor quality.
• FLV: older Adobe Flash-based format (rarely used now).

Your best bet? Use MP4 with the H.264 codec. It's supported by most monitors, media players, and software.

media players

Many TVs have USB ports, but that doesn’t guarantee your video will play correctly, if at all. Some monitors don’t recognize file types or lack the right playback software. That's where media players come into play: a compact device that stores and plays digital or audio files (or both) on a monitor.

Our advice: Bring your own media player. It gives you more control, better compatibility, and the ability to loop or repeat videos with ease.

what to look for in a media player

• Plays MP4 (H.264 codec) reliably
• Supports audio and video looping
• Can handle multiple video formats
• Easy to use

what won't work on a media player

• PowerPoint files
• PDFs
• Spreadsheets or web-based documents

If you’re using those formats, bring a laptop. Media players and TVs can't run local presentations without proper conversion.

A/V key to success: test, test, test

Whether you’re renting or bringing your own gear, test your media files early — not the morning of the show.

before you go live

• Submit your video to your exhibit partner/team in charge of tech in advance for testing
• Ask what file format and resolution works best with the supplied monitors and/or media players
• Test everything out the night before, and replicate. Don't leave this until setup when the pressure is high.

final thoughts

Even the most impressive trade show booth won't impress if there's glitchy audio or video. Cables, formats, devices — they’re easy to manage if you plan ahead. Understanding the basics gives you confidence on the floor and keeps your focus where it should be: connecting with your audience.