How to Encode H.265 Video with FFmpeg (CRF + Preset Guide)

May 17, 2026 · 10:12 AM UTC ·5 min read · 0 reactions · 0 comments · 31 views

#ffmpeg #video encoding #h.265 #hevc #tutorial

How to Encode H.265 Video with FFmpeg (CRF + Preset Guide)

TL;DR · WeSearch summary

H.265 (HEVC) video encoding with FFmpeg offers 30-50% smaller file sizes compared to H.264 at similar quality, with CRF controlling quality and preset determining encoding speed and efficiency. The -tag:v hvc1 flag is essential for compatibility with Apple devices and web browsers. For automation, the FFmpeg Micro API allows H.265 encoding without local installation of libx265.

Key facts

▪H.265 reduces file size by 30-50% compared to H.264 while maintaining similar visual quality.
▪The CRF value controls quality, with lower numbers meaning higher quality, and the preset controls encoding speed and compression efficiency.
▪The -tag:v hvc1 flag is required for H.265 files to play on Safari, iOS, and most web browsers.
▪Using the FFmpeg Micro API, users can perform H.265 encoding without installing libx265 locally.
▪For most web delivery, CRF 26 with a medium or slow preset offers a good balance between quality and file size.

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Canonical URL	https://dev.to/javidjamae/how-to-encode-h265-video-with-ffmpeg-crf-preset-guide-2efj
Publication time	Sun, 17 May 2026 10:12:57 +0000
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Opening excerpt (first ~120 words) tap to expand

try { if(localStorage) { let currentUser = localStorage.getItem('current_user'); if (currentUser) { currentUser = JSON.parse(currentUser); if (currentUser.id === 3873707) { document.getElementById('article-show-container').classList.add('current-user-is-article-author'); } } } } catch (e) { console.error(e); } Javid Jamae Posted on May 17 • Originally published at ffmpeg-micro.com How to Encode H.265 Video with FFmpeg (CRF + Preset Guide) #ffmpeg #video #webdev #tutorial Originally published at ffmpeg-micro.com H.265 (HEVC) produces files 30-50% smaller than H.264 at the same visual quality. The trade-off is encoding time. Getting the right CRF and preset combination for your use case is the difference between a file that's too big and an encode that takes all night.

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