HEVC Upload Experiments
summary
Claimed up to 2x better compression for HEVC versus H.264 proves false at Instagram story bitrates: manual tests plus millions of production uploads show HEVC cannot match H.264 by SSIM at identical bitrates without raising bitrate ~13% to tie, while PSNR suggests ~15% wins. Debugging uses stream analyzer, reveals oversized keyframes and missing B frames under iOS encoders, tests data rate limits vs average bitrate, files radars, sees iOS 13 change behavior and modest encoding speed and file size improvements.
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chapters (7)
- 0:00Intro
- 0:17MOTIVATION
- 1:42DOCFOODER FEEDBACK
- 2:35STREAM ANALYSIS
- 5:21LOCAL TESTING
- 7:46TEST IN PROD
- 9:25CONCLUSIONS
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