MP4 to FLV Converter
No limits. No uploads. Free.
or drop it here, or press Ctrl+V to paste. Up to 1 GB.
Audio and video run on your device. The engine downloads once (about 30 MB), and longer files take a little while.
About MP4 to FLV
An MP4 container can contain different video and audio codecs, so the extension alone does not establish playback support. With MP4 to FLV, fLV is a legacy video option and needs a compatible player.
MP4 to FLV starts with browser processing for supported input. A MP4 file over 50 MB, or a failed device attempt, can use compatible server processing when capacity is available. That fallback uploads the file and deletes its job after download. The 1 GB selection limit does not guarantee completion.
How to convert MP4 to FLV
- 1
Select the original MP4 for your FLV export. An MP4 container can contain different video and audio codecs, so the extension alone does not establish playback support.
- 2
Start MP4 to FLV with the selected file.
- 3
Save the FLV result. Open the saved clip in the required player rather than expecting native browser playback.
MP4 in MP4 to FLV
An MP4 container can contain different video and audio codecs, so the extension alone does not establish playback support.
For MP4 to FLV Converter, start with the actual MP4 file rather than renaming another format.
FLV in MP4 to FLV
FLV is a legacy video option and needs a compatible player.
After MP4 to FLV Converter, Open the saved clip in the required player rather than expecting native browser playback.
Common questions
When is MP4 to FLV useful?
An MP4 container can contain different video and audio codecs, so the extension alone does not establish playback support. FLV is a legacy video option and needs a compatible player.
What should I inspect in the FLV exported from MP4?
Open the saved clip in the required player rather than expecting native browser playback. Keep the MP4 source until you have confirmed the FLV is suitable.
What can I use MP4 to FLV for?
An MP4 container can contain different video and audio codecs, so the extension alone does not establish playback support. With MP4 to FLV, fLV is a legacy video option and needs a compatible player.
Will MP4 to FLV improve the original quality?
No. Conversion cannot restore missing sound or picture detail. Reencoding can introduce additional loss, even if the output is larger. For MP4 to FLV, Open the saved clip in the required player rather than expecting native browser playback.
Why might my FLV file not play in every app?
Support depends on both the container and codecs. Test the downloaded result in the player or editor you intend to use. For MP4 to FLV, Open the saved clip in the required player rather than expecting native browser playback.
Why can the first MP4 to FLV attempt take longer?
The browser downloads the audio and video engine at first use. Later attempts can reuse it, but long clips and slower devices still need processing time. For MP4 to FLV, Open the saved clip in the required player rather than expecting native browser playback.
Does MP4 to FLV upload my file for processing?
The first MP4 to FLV attempt uses your browser for supported input. A compatible MP4 file over 50 MB, or an attempt your device cannot finish, may be sent for server processing if capacity exists. In that case the file is uploaded and the conversion job is deleted after download.