[MEncoder-users] Mencoder video check

[jay.r]

On Jun 7, 2006, at 9:38 AM, RC wrote:

> On Wed, 7 Jun 2006 09:05:48 +0200
> "jay.r" <jay.r at funwithmsn.com> wrote:
>
>> How do you check if a videofile is supported by mencoder?
>
> I doubt there's any sure way, other than trying to play it (with
> mencoder).
>
mplayer -identify file.extension -nosound -vc dummy -vo null
printed out the info I needed.
>> (f.e., using this in a webinterface, a user uploads a video and you
>> want to know if you can encode it with mencoder..
>> if you don't do this, a malicious user can search for vulnerabilities
>> in mencoder an upload a script or executable and exploit your whole
>> system.. )
>
> Not if you run mencoder with low privlidges in chroot/jail/systrace/ 
> etc.
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Thanks for your answer,
Jay