Hello guys, I am now going to manage YouTube marketing for my clients for getting offline clients. Would someone please tell me the best outsourcing person or organization for managing my client YouTube marketing?

I am concern about some tools for uploading videos in YouTube but I have heard that YouTube rejecting videos that are uploaded through different systems. I am fully concern that I can find some good person or organization for doing my YouTube marketing by using Odesk, Elance etc for this but do you know someone specific for doing this task?
Can you share some great company and their service of YouTube marketing and share about why you like their services?

Please share your experiences guys. Any ideas, help, opinions would be appreciated. Thanks in advance.