FLV to Video ?? 
Ultra m4v to FLV Converter is professional Flash Video Encoder and SWF Converter software which helps you convert FLV and SWF video files like MPEG to FLV, 3GP to FLV, WMV to FLV, m4v to FLV, 3GP to SWF, MPEG to SWF, WMV to SWF, m4v to SWF, etc. The m4v to FLV Converter can convert so many video formats including DivX, XviD, m4v, WMV, MPG, MPEG, MP4, M4V, FLV, ASF, RM, RMVB, MOV, MOD, ASX, MKV, OGM, VCD files(.dat), VOB, m4v to FLV and SWF formats.
dvdXsoft m4v to FLV converter can convert Xvid, DivX, 3GP, MPEG, MPG, MPEG-1, MPEG-2, MPEG-4, WMV, m4v, RM, RMVB, MOV, and more other formats to FLV video format for playing on websites like YouTube, Metacafe or by software that supports FLV formats. Of course, you can also convert m4v to FLV with this FLV Converter Software. Do you want to play your own videos on websites? Do you want to upload your Movie to YouTube, Metacafe? Let's go.
Guide: How to convert m4v to FLV with the m4v to FLV Converter? Take Ultra m4v to FLV Converter for example.Step 1: Download something to convert m4v videos to FLV. 
Free download m4v to FLV Converter (Note, like we have already explained, this m4v to FLV converter is not only convert m4v to FLV, this m4v to FLV software can also convert many other video and audio formats to FLV formats).
Step 2: Launch the m4v to FLV Converter:
Step 3: Click 
to input m4v video file to be converted (batch convertsion supported, you can feel free to add as many as you wish). When "the add media files" popup window open you need to select "All Media Files" or "m4vP files(*.m4v, *.3G2)".
Tip: If your mobile phone video is *.mp4 formats, you should select MPEG-4 files.
Step 4: In the file list, click the FLV video file to be converted, the preview video screen may auto play the selected FLV file, just click pause button.
Step 5: Click the down arrow to choose FLV or SWF or both as you wish. 
Then click change, select the destination folder you want the converted m4v to save.
Step 6: Click 
button.
the process shall be looked like this:
After successful converting m4v to FLV, the converted video file shall be stored in the folder you have previously selected.
Convinced? Buy full version now.
To convert m4v to FLV with dvdXsoft FLV Video Converter is quite similar as the guide above. The differences are the appearence of the buttons like the following image. ( when add files you should select "All Supported files" or "Quicktime(*.m4v,*.m4a,*.m4v,*.mp4)").
Free download dvdXsoft FLV Video Converter and test yourself right now. Or, Buy full version dvdXsoft FLV Video Converter now.
Upload your FLV videos to YouTube like websites