Overview
This guide compares H.264 (AVC) and H.265 (HEVC) across the most important criteria to help you choose the right format for your needs.
H.265 offers 50% better compression than H.264 but requires more processing power and has less universal support.
Head-to-Head Comparison
Compression
H.264 (AVC): H.264 is less efficient but uses less CPU for encoding/decoding.
H.265 (HEVC): H.265 achieves 50% smaller files at equivalent quality.
Winner: H.265
Compatibility
H.264 (AVC): H.264 is supported by every device, browser, and platform.
H.265 (HEVC): H.265 requires modern hardware - older devices may not support it.
Winner: H.264
CPU Usage
H.264 (AVC): H.264 decodes easily on all hardware including older CPUs.
H.265 (HEVC): H.265 requires modern hardware for smooth decoding.
Winner: H.264
4K Video
H.264 (AVC): H.264 can do 4K but files are very large.
H.265 (HEVC): H.265 is the standard codec for 4K and HDR video.
Winner: H.265
Streaming
H.264 (AVC): H.264 is the universal streaming standard (YouTube, Netflix use both).
H.265 (HEVC): H.265 is increasingly used for high-quality streaming.
Winner: Tie
Convert Between H.264 (AVC) and H.265 (HEVC)
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Convert Files NowFrequently Asked Questions
Is H.265 worth it over H.264?
H.265 gives 50% smaller files at equivalent quality, which is significant for 4K content. Use H.265 when compatibility is not a concern.
Can all computers play H.265?
Modern computers (post-2015) handle H.265 well. Older hardware may struggle. Check your hardware support before converting.
Do streaming services use H.265?
Netflix and Amazon use H.265 for 4K content. YouTube uses VP9 and AV1. Most platforms still use H.264 for HD content.
Which should I use for YouTube uploads?
YouTube accepts both. H.264 is safe and widely supported. H.265 may be re-encoded by YouTube anyway.
Is H.265 free to use?
H.265 has complex patent licensing. H.264 is more straightforward. AV1 and VP9 are royalty-free alternatives.