2017-05-20 1:51 GMT+02:00 Ofer Nave <[email protected]>: > Anyone know of a reference for mapping ffmpeg format > values to MIME types
You can use the FFmpeg source code to produce such a mapping but I wonder what you need it for? > and recommended file extension? What is "recommended"? The answer may be possible for avi (although .divx exists iirc) but for asf, at least three "recommended" extensions exist, for transport streams there may be even more. Otoh, .mpg is used for three or four different formats, can you "recommend" it for anything? > My google attempt failed to turn up anything. > > I did manually put together a small list with guess-work and > clues from Wikipedia, IANA > <https://www.iana.org/assignments/media-types/media-types.xhtml#video>, > and the Mozilla Developer Network > <https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/MIME_types/Complete_list_of_MIME_types> > for the subset of formats that I encountered in my video > input test collection: > > ffmpeg Format Extension MIME Type > ─────────────────────── ───────── ────────────────────── > asf asf application/vnd.ms-asf > avi avi video/x-msvideo > flv flv video/x-flv > matroska,webm webm video/webm This is a demuxer that supports several formats with different mime-types. > m4v m4v video/x-m4v This is a muxer. > mov,mp4,m4a,3gp,3g2,mj2 mp4 video/mp4 This is a demuxer, again with different mime-types. > mpeg mpeg video/mpeg > mpegts mpeg video/mpeg > mpegvideo mpeg video/mpeg Both the extension list and the mime-types make little sense, the formats are not identical. Wikipedia claims the mime-type for mpegts is "video/MP2T" (and MP2P for mpegps and dvd for vob which I thought is the same). > ogg ogv video/ogg > matroska mkv video/x-matroska > webm webm video/webm These two are muxers. > No idea if I've made the right calls, though. > (The test files already have file extensions, but I'm operating > on the assumption that the extension of a file a user uploads > is irrelevant, and This is generally correct although a few formats exist for which probing is impossible or at least so difficult that FFmpeg does not support it currently. > that the file should be renamed based on ffprobe and > intelligent mapping...) If you don't trust the extension (which generally makes sense) why would you trust the mime type? And why would you trust it more than probing? Carl Eugen _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
