MP4 is a new container format, a container format allows you to combine different multimedia streams into one single file. Multimedia containers are for example the well known AVI, MPEG , Matroska, OGM. MP4 is the global file extension for the official container format defined in the MPEG-4 standard. MP4 is streamable and supports all kinds of multimedia content, multiple audio-, video-, subtitlestreams, pictures, variable-framerates, -bitrates, -samplerates...) and advanced content like 2D and 3D animated graphics, user interactivity, DVD-like menus. MP4 is a streamable format
To create MP4 compliant files use audio/video formats covered by the MPEG-4 Standard:
Use MP4 compliant video formats: MPEG-4 (XviD, DivX5, 3ivx, ffmpeg/ffvfw, NeroDigital, H.264/AVC), MPEG-2, MPEG-1, ... Don't use MS MPEG-4, MPEG-4 DivX3, WM9 (Windows Media 9), RV9 (Real Video 9)...
Use MP4 compliant audio formats: MP3, AAC, MP2, MP1, TwinVQ, ... Don't use OGG Vorbis, Voxware Metasound, ...
Use MP4 compliant picture formats: JPEG, PNG
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