[FFmpeg-user] mapping formats to file extensions and MIME types

[Carl Eugen Hoyos]

2017-05-21 14:30 GMT+02:00 Ofer Nave <odigity at gmail.com>:

> 2) Compare it against some kind of whitelist of formats/codecs/etc
> that I've decided to allow.

> (Necessary because ffmpeg will, for example,
> "recognize" a text file, and even report a video stream in it.)

You can disable the text demuxer at build time or you can
use the global -format_whitelist option to only allow formats
that you want (without needing any processing).

> 3) If whitelisted, do further processing.
>
> Additionally, I was going to attempt to determine what file extension
> and MIME type would be most appropriate to associate with the
> original file and store those in the DB for reference purposes, as
> well as to set the contentType on the original file, since it is
> technically serveable via our private web server.  But I can do
> without either if it proves to be too difficult.

You can just store the FFmpeg demuxer type in you DB, ignoring
the mime-type.

> I would also appreciate any advice on assembling such a whitelist.

Why would you disable any formats?

Carl Eugen