How to read the resolution of video via API?

[jsdf]

Hi all,

In building a wrapper to FFMPEG, we are trying to figure out what libraries will allow us to read the resolution of a video file. Ideally it will work on Windows and Linux. Is there a way to run FFMPEG command-line and get back the resolution of a video? Does anyone know of libraries that would be useful for this purpose?

Note: we've already seen http://directshownet.sourceforge.net

Thanks,
jsdf

[jeromedroz]

On the command-line, you can use mplayer, a software that uses ffmpeg librairies. The output is sometimes very verbose, but the informations were correct the time I was using it (with MPEG2-PS, MPEG2-TS).

$ mplayer -identify <path/to/your/file> -nosound -frames 1

Another software I found useful: http://mediainfo.sourceforge.net/fr

Hope this helps

[CyberMonkey]

mediainfo looks nice!
I have a problem quite similar but bigger: I'm building a database which automatically detects and stores codec information about a sequence.
For that I would need a tool/library which gives me that information (for example in an xml file) but I also must get a complete list of every possible piece of information which the library/tool can extract, in order to populate my database.
Does someone has some pointers to what I can use for this?