How to convert .flv videos to .avc format.
Converting Flash Video Files directly to MPEG-4 Advanced Video Coding Movie Format (.flv to .avc conversion) is certainly possible and should be quite straightforward.
Try using video editing programs or conversion tools, such as the Freemake Video Converter, which allows users to import FLV videos and export them in AVC format.
A video converting tool
One of the most popular and successful free video conversion softwares
Video capturing software from Nero Suite