Note: Converting FLV to MP4 is just part function of Emicsoft FLV Converter which is distributed by Emicsoft Studio.
Step 1: Free download FLV to mp4 Converter and install it.
Step 2: Open this FLV to mp4 converter

Step 3: Click
button to input FLV file(s), batch FLV to mp4 supported, you can at the same time add as many as possible, but here I suggest add 1-10 FLV video files one time for better stable running performance.
Step 4: Go to
to edit file, you can adjust video brightness, contrast and saturation, split video into clips and alter play region.
Step 5 : under Profile selection: click download arrow, Choose: mp41-Custom mp4-1 Format (*mpg) or mp42-Custom mp4-2 Format (*mpg) , Here we choose mp42-Custom mp4-2 Format (*mpg)
.
Click "Change" button under output Folder to select the destination you want the converted mp4 to store. (the default folder is stored under file: c:\outputFolder\)
Step 6: Click
to start convert FLV to mp4 with fast speed and high quality.

After successful converting FLV to mp4, the converted mp4 files shall be stored on the folder you have previously selected.
With this best FLV to mp4 converter, not only can convert FLV to mp4 . you can also convert FLV to almost all other popular video formats. but all the process is almost the same, if u understand how to convert FLV to mp4, then convert FLV videos to other formats, become easy. Just Free download and enjoy it.