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Local processing has no fixed file-size limit and depends on browser memory. Server limits: video 100 MB, other files 10 MB · Up to 5 files per batch
No registration · Free to useWhen to use this tool
M4V is related to MP4; changing containers does not remove DRM protection. FLV is a legacy web-video container; modern websites usually prefer MP4 or WebM.
Quality and output
FLV is a legacy web-video container; modern websites usually prefer MP4 or WebM. Quality changes depend on the input and output formats. A format change cannot restore information already lost.
How to use
- Upload a valid M4V file.
- Run the conversion to FLV.
- Download the result and check it before replacing your original.
Before you download
Video conversion selects the first video track and, when present, the first audio track. Extra audio tracks and subtitles are not retained; check the exported picture and sound.