How To Send A Video In Facebook
Open the conversation you want to send out a picture or video to. You could send out images as well as videos that are saved to your gadget's video camera roll, or you can take or record a snapshot or video on the fly as well as send it directly in Carrier. You can do all this from the conversation screen.
Touch the "Video camera" switch if you wish to take a photo or record a video. The Camera switch above the message field enables you to take pictures and also record videos that can be quickly sent to the discussion.  If this is your very first time doing this, you could be triggered to provide Messenger accessibility to your device's cam. You'll have to allow accessibility in order for the cam includes to work.
You could switch over in between the front and back electronic cameras by touching the button in the lower-right corner.
Tap the round Shutter button to take a photo. Touch the "Send out" switch to send it to the conversation.
Press and also hold the round Shutter button to videotape a video clip. You could videotape videos as much as 15 secs long. Tap the "Send" button to send it to the discussion.
You could terminate a recording by dragging your finger off of the shutter and launching it.