Should you use H.264 (AVC) or H.265 (HEVC) for video?

Video is a cornerstone of any modern digital marketing (discover what digital marketing is) strategy. From social media ads to webinars and corporate videos, quality and efficiency are key. Should you use the classic H.264 (AVC) or go for the more modern H.265 (HEVC)?

This choice directly affects visual quality, file size, compatibility with devices and platforms, and performance during editing and playback. If you're a marketing professional, work at an agency, or are a freelancer managing audiovisual content, understanding the differences will help you optimize your digital assets.

Meet the Contenders: H.264 (AVC) and H.265 (HEVC)

Let's get a little technical, but in a simple way:

• H.264 (Advanced Video Coding - AVC): It has been the de facto standard for many years. Its big advantage is its near-universal compatibility. Practically any device, browser, or video platform can play H.264 without any problems. It's reliable and well known.

• H.265 (High Efficiency Video Coding - HEVC): It's the successor to H.264. Its main promise is greater compression efficiency. This means it can deliver video quality similar to H.264 but with a significantly smaller file size (up to 50% smaller, in theory), or noticeably higher quality while keeping the same file size.

The Advantages of H.265 - Is the Future Already Here?

On paper, H.265 sounds ideal, especially in a world where high-resolution video is increasingly common:

• File Efficiency: Smaller file sizes are crucial for reducing storage and bandwidth costs, improving web load times, and optimizing the streaming experience, especially over mobile connections.

• Superior Quality: It's the preferred codec for 4K (what is 4K?) and 8K (what is 8K?) content, as well as for HDR (High Dynamic Range) video, since it handles the complexity of these formats better. Shooting in 4K often benefits enormously from HEVC compression.

• Growing Adoption: Although not universal, its adoption has grown massively in recent years across cameras, smartphones, editing software, and streaming platforms.

The Practical Reality: Why H.264 (AVC) Remains Strong

H.264 still has solid arguments in its favor in 2025:

• Universal Compatibility: It remains the undisputed king. If you need your video to play smoothly on the widest possible range of devices (old and new), browsers, and software, H.264 is the safest bet. It avoids potential headaches with clients or users who can't view the content.

• Encoding Performance (Rendering): H.265 is more complex and generally demands more processing power (CPU/GPU) to encode video. This translates into longer rendering times (what is rendering?) compared to H.264 using the same hardware. If delivery times are critical, this is an important factor. Problems that cause delays in production are often related to technical bottlenecks.

• Decoding Performance (Playback): Although modern hardware handles it well, playing H.265 can still be more demanding for older or lower-end devices compared to H.264.

• Workflow Maturity and Stability: The workflows (what is a workflow?) based on H.264 are extremely well tested and optimized. Most useful creative software handles H.264 natively and efficiently. Implementing H.265 may require adjustments or upgrades.

Making the Decision

There's no single answer. The choice depends on your priorities and the specific context of each project (consider the full process for making a video). Ask yourself these questions:

1. Who is your audience and where will they watch the video? If you need maximum compatibility with old or diverse devices, H.264 is safer. If your audience uses modern technology and you prioritize quality/efficiency on platforms that support H.265 (like YouTube or Vimeo for 4K content), HEVC is a great option. Learn which platforms your brand should be on.

2. What quality do you actually need? For standard HD videos (1080p) for social media, H.264 is usually enough. For 4K, 8K, or HDR, H.265 offers clear efficiency advantages. Decide what resolution to work at.

3. What are your workflow and hardware like? Do you have a powerful setup that can handle H.265 encoding without excessive delays? Do your editing software and your collaborators' software fully support it?

4. Are delivery times a critical factor? If you need to deliver videos quickly, H.264's shorter rendering time can be decisive. Consider how long it takes to make a video.

5. Do you prioritize file efficiency (smaller size) or universal compatibility? This is often the central question.