How are you exporting? I would recommend exporting in a high quality or lossless format.
Here's an article that might help:
[
www.dvcreators.net]
For the FLV conversion, try the free trial of DV Kitchen.
If it works well and you decide to purchase it, use "lafcpug" as the referral code, you'll get a discount and also help support LAFCPUG.
[
www.dvcreators.net]