How to convert video to MP4 iPhone

Taking as its premise that the tool should be Free recommend using Free iPhone Video Converter

One great advantage of this software is that it can convert the entire movie or select a partition from the movie to convert to iPhone (trim video).
Supports multiple entry formats as AVI, MPG, MOV, 3GP and more, is fast and delivers a video ready for export to Apple iPhone MP4 format with high quality.
For example you can convert AVI to MP4 iPhone, WMV to iPhone, MOV to iPhone, 3GP to MP4 iPhone.

Once downloaded and installed to convert the steps are:

Step 1: Video Input
Click on Examinar... top button to select an input video file to convert.
Free iPhone Video converter supports video input format. Avi,. Mpg,. Mpeg,. Mpe,. Wmv,. Asf,. Mov,. Qt, .3 gp, .3 g2,. Flv, swf.

Step 2: Output Location
Click on the second button Examinar ... to choose lower the target location and name of the video and then click Save become.

Step 3: Output Profile
Select Presets the main characteristics of the output file from the preset configuration profiles.

Step 4: Trim video
You can select only a portion of the video conversion, this allows you to iPhone only the part you are interested in the original video. Click on the button at the bottom of the interface to open a new window (Trim video)
Utilice la línea de navegación y los botones especiales para establecer la posición de los marcadores de posición de inicio y fin. Use the navigation line and special buttons to set start and end selection markers position.
Finally, click Apply and Close to return to the main program window.

Step 5. Convert video

Another option to convert videos to iPhone is MediaCoder iPod Touch Edition
This shortened version of MediaCoder has the same interface as its big brother but specializes in format compatible with iPhone, Touch iPod, iPod Video and iPod Nano 3G.
You can read the formats known to turn to H.264, or MP4 AAC, and thus be able to transfer to the player from Apple.
Its interface is easy to use, offers preview while we perform the conversion, and enables set both the resolution (from 320x240 to 640x480) and bitrate (between 256 Kbps and 1500 Kbps).

MediaCoder iPod Touch Edition supports the following formats:
Input: MP3, MP4, M4A, 3GP, OGG, AAC, MP2, WAV, RA, MPC, WMA, APE, TTA, APL, FLAC, WV, ALS, CDA, MPG, MPEG, M2V, MPV, MKV, AVI, DAT, RM, MVB, MOV, WMV, ASF, VOB, TP, TS, H.263, H.264, AVS, FLV, SUB, CUE, Y4M, VDR, GIF

Another alternative Software more Free is Videora Converter iPhone.