write the lines down, pref. in script form, and then post an ad on craigslist for translation for about $25. then you can either meet the person to "interview" or if you feel they're okay, just email them the script and then pay them when it's done. 49 minutes is potentially a lot of dialogue, so you may or may not want to raise the rate.

i needed french subs for one of my videos, which will be screening in paris next year, and 30 seconds of voice turned out to be 2 full pages of script, double typed.