This is a full guide about Apple iPhone, it should be easy to understand. If you have any problem about this guide, feel free to post here. I will reply to you ASAP.

iPhone Supported Video format:
H.264 video, up to 1.5 Mbps, 640 by 480 pixels, 30 frames per second, Low-Complexity version of the H.264 Baseline Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats;
H.264 video, up to 768 Kbps, 320 by 240 pixels, 30 frames per second, Baseline Profile up to Level 1.3 with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats;
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats

2. How to rip DVD and IFO to MP4 for iPhone

Step1. Download the DVD to iPhone Converter. Run it and Load your DVD by clicking “Load DVD” button, you also can load IFO file from your hard drive by clicking “Load File” button.
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Step3. Click the drop download list to select the Audio and Subtitle you want, you also can change the output location. A regular DVD movie has several titles, such as MTV DVD, by default, this software will merge all the DVD chapters into one video clips, you can check the click box before the title list to select any DVD clips you want to rip.
As format: This software supports three Apple products: iPhone, iPod and Apple TV. It can rip DVD to MP4, M4A; it also can rip audio from DVD to MP3, AAC. Just select “iPhone Video MPEG-4 (*.mp4)”
After you finish the settings, click “Start” button to start the conversion.


3. How to rip DVD and IFO to MP4 for iPhone For Mac Users
  1. Download ikysoft DVD to iphone converter for MAC, For intel users pls download this interl version, For Power PC users, Pls download this Power PC Version . If you browse with Firefox, pls right click and choose save target as..(as firefox now does not full support dmg file download).
Step 1: Add DVD Movie

Click the Load DVD button, browse your computer, find the DVD folder of the movie you want to add from your hard disc or DVD-ROM, open your DVD folder, select the VIDEO_TS folder and click OK.

Or, click the Load IFO button, browse your computer, find the DVD folder of the movie you want to add from your hard disc or DVD-ROM, open your DVD folder, open the VIDEO_TS folder, select all the IFO files and click OK.

After you add your movie, you can choose any titles or chapters that you want to convert by ticking the check boxes before them.

Step 2: Output Settings

At the bottom of the main window, you can name the output file for the current title/chapter, and select a subtitle to put on your movie, select an audio track. Then finish all the settings including selecting an output format, clicking the Settings button to set the video and audio encoding settings, choose if to merge the selected titles or chapters into one file, and set an output directory to save the output files.

Step 3: Start Conversion

After setting the output settings, you can just click the Convert button to start converting your Movie. You can choose to shut down your computer or open the output folder after conversion so you don’t have to sit before your computer waiting for the conversion to finish

3. How to convert AVI, MPEG, FLV, WMV, MOV, ASF, MP4, DAT, RM, RMVB, MPG, 3GP to MP4 for iPhone
 Download “Aimersoft iPhone Converter Suite”, install and run it. For Windows Vista user, you may have to run this program as Administrator, right click the program shortcut and click “Run as Administrator”.
1. Click “Video to iPhone Converter” to load the Aimersoft Video to iPhone Converter. Then click “Add” button to load video files. This software supports batch conversion, so you can add several video clips at one time.

2. The operation is similar with DVD to iPhone Converter, this software can join several different video clips into one file, if you want to join video, just check the box “Merge into one file”. You also can customize the resolution, video bit rate, encoder, frame rate, audio bit rate, channel, etc in the setting panel by clicking the “Settings” button. The program also lets you create a profile and save it, then you can use different settings for each video clips.

3. Click “Start” button to start the conversion after you finish the settings.

Tips:
1. This software provides rich video editing functions for you to trim, crop and edit DVD movie. Click the “Crop” button, and then you will see a pop up window (See the figure below). There is a frame in dashed line around the movie video; you can drag it to cut the black edges.
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2. You can click the “Effect” button and customize the brightness, saturation, contrast, volume, etc . You can even apply special effects such as “Emboss”, “Negative”, “Old film” and “Gray” by selecting an effect from drop-down list.

3. This software can capture pictures from DVD movie, there is a small camera icon below the preview windows, click it when you preview the movie, it can save picture as JPEG and BMP.

YouTube Video Converter is the most powerful YouTube assistant software in market today. The YouTube FLV Converter can download YouTube videos unlimited simultaneously (a real time saver!); Automatically name the downloaded video the same as the YouTube title; Convert YouTube videos to various video formats, including avi, DivX, XviD, rm, rmvb, MOV, MPEG, MPEG4 AVC, H.264 and WMV, VOB; VCD, SVCD and DVD Format .mpg; Convert download YouTube videos to a format compatible with your favorite portable device, including iPod Video, iPod Touch, iPod Nano, iPhone, Zune, PSP, PDA, Apple TV, as well as video capable MP3 players, 3GP mobile phones, and Pocket PC.
 
The FLV Editor is an idea solution to edit the FLV files without changing the FLV format. With the FLV Editor, we can clip the video, crop the video, merge the selected FLV files into one, add watermark on the FLV file, add subtitle, customize the video effect, etc. Moreover, the FLV Editor allows us to trim one selected file into several segments and output one FLV video with several output formats. (you can click the above related links to directly reach the related edit description or refer the left navigation)
 
The DVD to iPod Mac Software also can convert DVD to other popular video formats like: FLV, MPEG1, MPEG2, MP4, 3GP, 3G2, MOV, AVI, MPEG TS/TP (for HD Video), etc. With the DVD to iPod converter for Mac Software, you can freely enjoy your favorite DVD on video iPod, on iPod touch, iPod Video, iPhone, Apple TV, PSP, PS3, Youtube (web), Creative Zen, iRiver PMP, Archos, various video mobile phones and many other digital video and audio players.

Apple TV Converter for Mac is a popular and powerful video to Apple TV conversion software on Mac OS (including Mac OS X 10.5 Leopard).
 
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Mac DVD Ripper  is an all-in-one DVD ripper for Mac OS X software. This Mac DVD Ripper is an excellent DVD Decryption tool for Mac users to rip DVD to various video formats (including MP4, AVI, M4V, MOV, 3GP, MPG, FLV) and audio formats (MP3, M4A, AAC, WAV, OGG, APE, etc.) for playback on iPod touch, iPod classic, iPod nano, iPhone, Apple TV, PSP, PS3, Youtube (web), Creative Zen, iRiver PMP, Archos, all kinds of video cell phones and digital video and audio players. The Mac DVD Ripper is what godgious you need to put your DVD movies on your mobile devices.
iPod Converter Mac   is the best Video to iPod converter Mac OS X software for you. With the iPod Converter for Mac you can easily convert popular video formats including FLV, MPEG1, MPEG2, DivX, Xvid, WMV, 3GP, 3G2, MOV, AVI, MPEG TS/TP (for HD Video), etc to iPod compatible MPEG-4 videos. And also it is not only and iPod Video Converter for Mac, but it can convert all popular videos to iPhone, Apple TV, PSP, PS3, Youtube (web), Creative Zen, iRiver PMP, Archos, MP4, various mobile phones and many other digital video and audio players.
iPod to iTunes for Mac is so powerful and easy to use that it can transfer iPod video, iPod music, podcast and TV shows from your iPod or iPhone to iTunes library with great ease. On the other hand, it is also Mac to iPod/iPhone transfer software. The music and videos on your Mac, whose formats are supported by iPod and iPhone including AAC, MP3, MP4, MOV, WAV etc., can be directly transferred to your iPod/iPhone with this software, no need to buy music from iTunes music store.

TOD Converter is the excellent TOD Converter software for you which can convert .tod files to all format files with high quality and fast speed.The TOD Converter can not only convert TOD to AVI, TOD to MPEG , DVD, WMV, MOV, M4A, Mp4, M4A, Mp3, H264, but also convert TOD to iPod Touch, iPod Nano, iPod Classic, iPhone, iPhone 3G, Apple TV, PSP, Creative, Zen, iRiver, Archos, Zune, Blackberry, etc.Moreover, the TOD Converter provides powerful edit functions We can crop and trim the video when preview. Free download and have a try.TOD to Flah is a powerful conversion software which not only can convert TOD to FLV( flash file with FLV extension) with high quality and fast conversion speed but also can provide powerful edit functions such as "crop TOD", "trim TOD video", etc.