iPhone supports most video codecs including H.264, H.265, MPEG-4, M-JPEG. iPhone can open container formats like MP4, MOV, M4V, 3GP. iPhone 8 and later record in HEVC format by default
Aspect ratio shows screen shape as ratio of columns to rows of pixels. Screens display images as grid of colored squares called pixels. Common video aspect ratios are 16:9, 16:10, or 4:3
Codec is software that compresses and records video files. Video container is final product, codec is processing software
Most DVDs use MPEG-2 (H.222/H.262) for high-quality video and audio. DVD authoring software creates directory structure for player compatibility. DVD+R discs are almost universally recognized by most players
Samsung TV supports various video formats including AVI, MKV, MP4, and WebM. Samsung TVs from 2018 onwards no longer support DivX. AV1 support added in 2020, supporting up to 8K resolution. Samsung TVs from 2018 onwards don't support DTS audio. Samsung TVs from 2018 onwards support Opus audio
Instagram offers four video formats: Reels, In-Feed, Stories, and Live. All formats support MP4, MOV, and GIF file formats