With Converter App, you can convert 3GP files into many other formats:
3GP to MP4 | 3GP to MP3 | 3GP to MOV | 3GP to WEBM | 3GP to AVI | 3GP to M4A | 3GP to WAV | 3GP to WMV
→ All 3GP Converters
If you want to keep working with your final FLV, try:
FLV to MP4 | FLV to MP3 | FLV to MOV | FLV to MKV | FLV to WEBM | FLV to AVI | FLV to MPG | FLV to TEXT
→ All FLV Converters