What are the format and resolution requirements for video? - Facebook
: Standard "high definition" targets are 1920x1080 (1080p) or 1280x720 (720p) with an aspect ratio of 16:9 . Recommended Players & Converters Yfm (51) mp4
: For the best balance between quality and compatibility, ensure your MP4 uses the H.264 (AVC) or H.265 (HEVC) codec. What are the format and resolution requirements for video
: Video encoders like x264 use a "Constant Rate Factor" (CRF) scale from 0 to 51. Value 0 : Lossless (highest quality, massive file size). Yfm (51) mp4
: This is an internal label often seen in the metadata of files downloaded using command-line tools like yt-dlp . It typically denotes the video was sourced from a YouTube-like service using the "Yfm" format group. Video Quality & Encoding Guide