✳ CODEC HUB

H.265 / HEVC compatibility across creator platforms

H.265, also called HEVC, is a lossy video codec, not a container. On the measured Big Buck Bunny excerpt at approximate SSIM 0.992, libx265 medium used 3,758.5 kbps versus 3,925.9 kbps for libx264 medium, about 4.3% less on that animated clip. TikTok's Content Posting API and Pinterest's organic Video Pin spec list H.265, while YouTube's encoding page recommends H.264 instead of presenting a complete accepted-codec list.

Updated

Measured result and documented support

QuestionAnswerScope
Measured comparison3,758.5 kbps at interpolated SSIM 0.992Big Buck Bunny, animated, not camera footage
TikTok Content Posting APIH.265 listedAPI surface, not a statement about every app upload
Pinterest organic Video PinsH.264 or H.265 listedMP4/M4V on web; MOV also in apps
YouTube recommendationH.264 namedRecommendation page, not an exhaustive acceptance list

Questions people ask

Is H.265 the same as HEVC?

Yes. H.265 is the ITU-T designation and HEVC is the codec name commonly used by devices and editors.

Is H.265 always much smaller than H.264?

No. It was 4.3% smaller at the approximate matched point in this run. Other footage and settings can differ.

Can H.265 be inside MOV and MP4?

Yes, but container support does not prove that an upload surface accepts the codec inside.

Should I use H.265 for every upload?

No. Use it only where the official surface documentation or your verified workflow accepts it.

Sources

Related checks and fixes

64 documented platform x container combinations. Verdicts: Accepted (12); Not documented (36); Non-standard mux (16).

Per-platform coverage

Validity per container

Related free tools