✳ CODEC HUB
FLAC compatibility across creator platforms
lossless compressed audio; rarely accepted for video uploads - typically distributed alongside video, not inside it.
Updated
64 documented platform x container combinations. Verdicts: Not documented (16); Non-standard mux (48).
Per-platform coverage
- TikTok: MKV - Not documented, MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux
- Instagram Reels: MKV - Not documented, MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux
- YouTube Shorts: MKV - Not documented, MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux
- YouTube (long-form): MKV - Not documented, MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux
- LinkedIn: MKV - Not documented, MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux
- Instagram Feed: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Instagram Stories: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- X (Twitter): MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Facebook Reels: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Facebook Feed: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Pinterest: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Snapchat: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Snapchat Spotlight: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Snapchat Story: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Spotify Canvas: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
- Threads: MP4 - Non-standard mux, MOV - Non-standard mux, WEBM - Non-standard mux, MKV - Not documented
Validity per container
- MKV: pair common - FLAC inside MKV is the standard archival pair.
- MP4: pair invalid - non-standard for upload; rare.
- MOV: pair invalid - non-standard for upload; rare.
- WEBM: pair invalid - non-standard.