What are the requirements to directly publish images and videos to Instagram?

Here are some limitations and requirements of the Instagram API that you need to keep in mind:

• Account type: Only Instagram Business accounts (linked to Facebook) are supported.
• A number of posts: Each Instagram Business account will be limited to 25 API-published posts within a 24-hour moving period. This rate limit will not impact the mobile notification method.
• Content-type: Multiple-image posts, single-video posts, User Tags, and Locations are supported (IGTV, Stories, Shopping tags, Branded content tags, and Filters, are not supported).
• Hashtags: up to 30 hashtags per post are allowed.
• @mentions: up to 20 mentions per post are allowed.

IMAGES MUST BE IN JPEG FORMAT and follow these standards:

• Maximum file size: 8MB
• Aspect ratio: Must be within a 4:5 to 1.91:1 range
• Minimum width: 320 (will be scaled up to the minimum if necessary)
• Maximum width: 1440 (will be scaled down to the maximum if necessary)
• Height: Varies, depending on width and aspect ratio

VIDEOS IN MOV or MP4 FORMAT and following these requirements:

• Container: MOV or MP4 (MPEG-4 Part 14), no edit lists, MOOV atom at the front of the file.
• Audio codec: AAC, 48khz sample rate maximum, 1 or 2 channels (mono or stereo).
• Video codec: HEVC or H264, progressive scan, closed GOP, 4:2:0 chroma subsampling.
• Frame rate: 23-60 FPS.