"File size: 300MB for Instagram 10GB for YouTube Shorts 40MB for Mastodon up to 1GB for Facebook, X/Twitter, LinkedIn, Pinterest, TikTok, Threads File format: X/Twitter, Pinterest, Facebook, and LinkedIn: MP4, MOV, AVI, and M4V TikTok: The video file formats accepted are MOV, MP4, or WEBM. Instagram and Threads: MP4 and MOV YouTube Shorts: .mov, .mp4, .mpg, .mpeg, .avi, .WebM The video you upload will be converted to MP4 encoded with H264, and a maximum resolution of 1280 x 720 pixels (HD)."
"When a video file is uploaded, there are a few steps the file needs to go through, including checking the file to ensure it can be passed over through the API, having AWS (Amazon Web Services) transcode the file, and generating potential thumbnails. When generating thumbnails, we look for a different thumbnail every 15 seconds. This means that for a video that is 30 minutes long, we would try to generate at least 120 different images. This can be a key factor that affects the upload speed."
Social networks enforce distinct video file size limits: 300MB for Instagram, 10GB for YouTube Shorts, 40MB for Mastodon, and up to 1GB for Facebook, X/Twitter, LinkedIn, Pinterest, TikTok, and Threads. Accepted file formats vary by network, including MP4, MOV, AVI, M4V, WEBM and others for YouTube Shorts. Uploaded videos are converted to MP4 encoded with H264 and limited to a maximum resolution of 1280 x 720 pixels (HD); Apple ProRes and raw camera formats like ARRI and RED are not supported. Only one video can be included per post. Upload duration depends on file size, video length, connection speed, transcoding, and thumbnail generation frequency.
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