Discussion about posting (videos or) .gifs on this forum - Page 2
The ftyp (File Type Box) identifies the major brand and compatible brands (e.g., isom , avc1 , mp41 ). g114.mp4
It consists of "boxes" (or atoms). The first 8 bytes are a box header (4 bytes for size, 4 bytes for type). Discussion about posting (videos or)
For in-depth technical detail, refer to ISO/IEC 14496-14 (MPEG-4 Part 14) and ISO/IEC 14496-12 (Part 12). Practical Optimization Tools g114.mp4
MP4 (MPEG-4 Part 14) is a container format based on the ISO Base Media File Format (ISOBMFF/MPEG-4 Part 12), similar to QuickTime.
For small file sizes, use the VerySlow preset and High profile in converters like HandBrake.