Tweet copy: 256 characters are available (24 characters are used for images).
Website title length: 70 characters. Please note — depending on device and app settings this description may truncate. Although not guaranteed, limiting the description to 50 characters should ensure that truncation won’t occur across most devices.
Image size: 800 x 418 pixels (max 3mb)
Aspect Ratio: 1.91:1
File types: PNG and JPEG are recommended. We do not accept BMP or TIFF files.
Tweet copy: 140 characters.
Title (under video): 70 characters.
Description (under video): 200 characters.
File type: MP4 or MOV.
File size: Under 1GB strongly recommended for optimal performance.
Max time: 2 minutes and 20 seconds (10 minute access available for select accounts, reach out to your Twitter rep for more information).
Video codec recommendation: H264, Baseline, Main, or High profile with a 4:2:0 color space.
Frame rate recommendation: 29.97FPS or 30FPS. Higher is acceptable. If the available video has a lower frame rate don’t try to “upsample” it.
Video bitrate recommendation: 6,000 - 10,000k (recommended 6,000k) for 1080p. 5,000k - 8,000k (recommended 5,000k) for 720p).
Audio codec recommendation: AAC LC (low complexity).