Facebook

4:5

16:9 to 9:16 supported but may be masked to 4:5

at least 1080 x 1080

≤ 30 fps

fixed frame rate · Same for every Facebook format

H.264

Same for every Facebook format

AAC

stereo · Same for every Facebook format

128kbps+

Same for every Facebook format

MP4, MOV, GIF

4GB

Same for every Facebook format

241 minutes