FLV to Video ?? 
After a strictly and complext test, we found Ultra h264 to FLV Converter is professional Flash Video Encoder and SWF Converter software which helps you convert FLV and SWF video files like MPEG to FLV, 3GP to FLV, WMV to FLV, h264 to FLV, 3GP to SWF, MPEG to SWF, WMV to SWF, h264 to SWF, etc. The h264 to FLV Converter can convert so many video formats including DivX, XviD, h264, WMV, MPG, MPEG, MP4, M4V, FLV, ASF, RM, RMVB, MOV, h264, ASX, MKV, OGM, VCD files(.dat), VOB, h264 to FLV and SWF formats.
Guide: How to convert h264 to FLV with the h264 to FLV Converter? Take Ultra h264 to FLV Converter for example.Step 1: Download something to convert h264 videos to FLV. 
Free download h264 to FLV Converter (Note, like we have already explained, this h264 to FLV converter is not only convert h264 to FLV, this h264 to FLV software can also convert many other video and audio formats to FLV formats).
Step 2: Launch the h264 to FLV Converter:
Step 3: Click 
to input h264 video file to be converted (batch convertsion supported, you can feel free to add as many as you wish). When "the add media files" popup window open you need to select "All Media Files" or "h264P files(*.h264, *.3G2)".
Tip: If your mobile phone video is *.mp4 formats, you should select MPEG-4 files.
Step 4: In the file list, click the FLV video file to be converted, the preview video screen may auto play the selected FLV file, just click pause button.
Step 5: Click the down arrow to choose FLV or SWF or both as you wish. 
Then click change, select the destination folder you want the converted h264 to save.
Step 6: Click 
button.
the process shall be looked like this:
After successful converting h264 to FLV, the converted video file shall be stored in the folder you have previously selected.
Convinced? Buy full version now.
Upload your FLV videos to YouTube like websites