On Sun, May 21, 2017 at 5:03 AM, Carl Eugen Hoyos <[email protected]> wrote:
> Top-posting is not welcome here, your email is a good > example why. > If you're referring to the fact that gmail automatically quoted the previous message in my reply, I apologize. I can prevent that from happening now that I know it's an issue. Now, it seems like I'm tripping over my own ignorance of ffmpeg and video in general. I assumed I could probe for format_name and simply map that to a file extension and MIME type, but apparently it's more complicated than that, so let me take a step back: The Problem I am given a file that may or may not be a video file. I know the extension it was originally named with on the user's computer, but since anyone can name a file anything, I conclude I should ignore that. 1) Determine if ffprobe can understand it. (It exits with 1 if it doesn't, so that's easy.) 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.) 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. I would also appreciate any advice on assembling such a whitelist. -ofer _______________________________________________ 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".
