Video abstracts

Technical specs for videos

Minimum specifications are as follows:

• Frame rate: 25 frames per second
• Widescreen (16:9) projects (the shape of our player)

YES:  16:9 widescreen format

NO:  4:3 square format

• One of the following formats: .mov, .mpg, .avi, or .mp4 (.mp4 preferred)
• Frame size: minimum of 720 x 576 pixels (PAL)
• HD welcomed: minimum = 1280p x 720p; maximum = 1920p x 1080p
• Video codec: H.264
• Video bitrate: minimum of 3 Mbps
• Audio codec: AAC
• Audio Frequency: 48000 Hz
• Audio bitrate: minimum of 128 kbps

Read more about video compression here.

If you have any questions, please email multimedia.journals@bmj.com  and our Journals Multimedia Editor, Leticia Amorim, will get in touch with you.