Using a filename with an invalid character gives an unexpected result

[YourDeveloperFriend]

I put in a filename with a parenthesis, and it tried to send a request to panda, who only returned with the following error:

error: NotAuthorized
message: Signatures do not match: you should have sent Base64(HmacSHA256("POST\napi.pandastream.com\n/videos/upload.json\naccess_key=*_&cloud_id=_&file_name=calli_lo%28.mov&file_size=54608542&path_format=2446996%2FVideos%2F%3Aoriginal%7C%3Avideo_id%2F%3Aprofile%2F%3Aid&profiles=h264%2Cwebm&timestamp=2013-10-16T23
746Z", your_secret_key)), but you sent "5TmVfQ2Frm1UUncyLVuLXAOpGC8/sBnNmWVdz39l2xI="

I think whatever you're using to encode the request is wigging out.