Video Messages | Developer Documentation

Video messages display a thumbnail preview of a video image with an optional caption. When the WhatsApp user taps the preview, it loads the video and displays it to the user.

Only H.264 video codec and AAC audio codec supported. Single audio stream or no audio stream only.

Note that videos encoded with the H.264 “High” profile and B-frames are not supported by Android WhatsApp clients. We recommend that you use H.264 “Main” profile without B-frames, or the H.264 “Baseline” profile when encoding (or re-encoding with a tool like ffmpeg), and place moov boxes before mdat boxes, for broader compatibility. If you are using ffmpeg, you can use the -movflags faststart flag to place moov boxes before mdata boxes.

Video Type	Extension	MIME Type	Max Size
3GPP	.3gp	video/3gpp	16 MB
MP4 Video	.mp4	video/mp4	16 MB