How to transform MP4 to FLV quickly? It is not a tough problem if you own MP4 to FLV Converter. MP4 to FLV Converter is a professional converting expert that help users convert MP4 to Flash very easily, also users could adjust the related parameters of FLV file(s) when using this converter, which also support to convert other video formats to Flash files.

The following figure is its main panel. [Add Video File(s)] button is for adding source file(s), which you could click to add MP4 file(s), of course there is another method to add source file(s): drag and drop source file(s) into the processing table directly, then the source file(s) could be shown as the path(s) in the processing table. And [Remove], [Remove All] could be used to delete the single source path and the whole paths one time separately, and [Preview Video] button is for previewing source file(s).

The tool button of [Options] is for setting up the properties of targeting file (s), which you could also use to select the objective format: click the edit-box of [Convert to] and choose [.flv], then adjust other parameters like the resolution or the audio sample rate etc. via clicking the related edit-boxes or radios. And the button of [ok] is used to go back to the main panel, which you could click to close the panel of [Options].

To transform MP4 to FLV, the tool button of [Convert] is essential, which is used to select the targeting folder and process the task(s). Thus, at last, click [Convert] button to select an objective folder and click [ok] button to convert MP4 to FLV, then progress bar could show you the information of processing, and later, the program could tell you it is successful to transform MP4 to FLV in the column of [Information].

You could try a free version via clicking here, and also purchase this converter through clicking here.