Facebook Reels video codec and container support
Facebook Reels recommends H.264 in MP4 for upload. 4 of the 48 codec and container combinations checked here appear in Facebook Reels's published upload documentation. Anything else is not documented: it may still upload, but converting to a documented combination is the safe choice.
Documented combinations
| Codec and container | Status | What the source says |
|---|---|---|
| H.264 / AVC in MP4 | Recommended | MP4 / H.264 / AAC is the safe default Facebook Reels upload. |
| AAC in MP4 | Recommended | AAC is the default audio codec inside the MP4 path. |
| AAC in MOV (QuickTime) | Recommended | AAC is the default audio codec inside the MOV path. |
| H.264 / AVC in MOV (QuickTime) | Accepted | MOV is a common Facebook upload input; behavior mirrors MP4 path. |
Quick answers
Does Facebook Reels support H.264 (AVC)?
Yes: Facebook Reels documents H.264 (AVC) in MP4 (recommended), MOV (accepted).
Does Facebook Reels support H.265 (HEVC)?
Facebook Reels's published upload documentation does not list H.265 (HEVC) in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Does Facebook Reels support AV1?
Facebook Reels's published upload documentation does not list AV1 in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Does Facebook Reels support VP9?
Facebook Reels's published upload documentation does not list VP9 in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Does Facebook Reels support VP8?
Facebook Reels's published upload documentation does not list VP8 in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Does Facebook Reels support MPEG-4 Part 2?
Facebook Reels's published upload documentation does not list MPEG-4 Part 2 in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Does Facebook Reels support ProRes?
Facebook Reels's published upload documentation does not list ProRes in any container checked here. It may still upload; H.264 in MP4 is the documented safe choice.
Every combination checked
Recommended: 3 · Accepted: 1 · Not documented: 28 · Non-standard mux: 16
| Codec | MP4 | MOV | WebM | MKV |
|---|---|---|---|---|
| H.264 / AVC | Recommended | Accepted | Non-standard mux | Not documented |
| H.265 / HEVC | Not documented | Not documented | Non-standard mux | Not documented |
| AV1 | Not documented | Not documented | Not documented | Not documented |
| VP9 | Not documented | Non-standard mux | Not documented | Not documented |
| VP8 | Non-standard mux | Non-standard mux | Not documented | Not documented |
| MPEG-4 Part 2 | Not documented | Not documented | Non-standard mux | Not documented |
| ProRes | Not documented | Not documented | Non-standard mux | Not documented |
| Codec | MP4 | MOV | WebM | MKV |
|---|---|---|---|---|
| AAC | Recommended | Recommended | Non-standard mux | Not documented |
| MP3 | Not documented | Not documented | Non-standard mux | Not documented |
| Opus | Non-standard mux | Non-standard mux | Not documented | Not documented |
| FLAC | Non-standard mux | Non-standard mux | Non-standard mux | Not documented |
| PCM (uncompressed) | Non-standard mux | Not documented | Non-standard mux | Not documented |
- Recommended
- the platform names this as a recommended upload
- Accepted
- listed as accepted, not the default
- Not documented
- not in the platform's published list; it may still upload, but convert to be safe
- Non-standard mux
- this codec is not normally carried in this container; files like this are rare
Sources
- Facebook Video Format Help: native upload; ad specs differ. Checked 2026-09-18.
Verdicts come from the published lists above. Where a list is silent, this page says “Not documented” rather than guessing.