Old Flash-era FLV files open in classic Windows editors like VirtualDub once converted to AVI, the container VfW tools grew up on. This direction suits retro editing setups; for playback on modern devices, MP4 or MKV would serve better.
Convert FLV to AVI – Free Online FLV to AVI Converter
Why convert FLV to AVI?
- Cut and filter rescued Flash-era clips in VirtualDub or other Video-for-Windows software that lives on AVI.
- Import old web video into early Premiere or Vegas versions that predate FLV support.
- Standardize a 2000s download folder into the one container an old media-center PC already handles.
Tip: The VP6 and Sorenson codecs inside older FLVs have no place in AVI, so video is re-encoded — pick Xvid at a high bitrate to keep the generational loss on already-compressed web video acceptable.
How to convert FLV to AVI
- Upload your FLV file using the area above.
- AVI is preselected as the target format.
- Click Start and wait for the conversion to finish.
- Download your converted AVI file.

