This guide includs five parts as follow:
 
Part 1: How to convert DVD movie to iPhone (Windows)
Part 2: How to convert AVI, WMV, MPEG, RM, RMVB, ASF, MOV, DivX, XviD, MPG to iPhone MP4 or H264 format (Windows)
Part 3: How to convert DVD movie to iPhone on Mac OS.
Part 4: How to convert video to iPhone on Mac OS.
Part 5: How to add movie and video to iPhone.
 
Part 1
 
How to convert DVD movie to iPhone (Windows)
 
1. Download the latest versionDVD to iPhone Converter + iPhone Movie/Video Converter Suite, and install it. You can know more about it by referring here.  
 

 
2. Insert the DVD you'd like to convert to your computer's DVD drive.
 

 
3. Click 'File' menu and 'Open DVD', or directly hit 'Open DVD' button to load the DVD. Set the profile to be iPhone 480*320 mpeg-4 video which is the default DVD video quality.
4. Click around in the DVD's menu to set up DVD playback as you like, select the subtitle and audio sound tracks etc, then begin to play the movie through the software by click the play button.
5. The following window will pop up. Here, you can rename 'Title Name', set 'Save Path' and output quality, then click 'Yes' button to start ripping DVD to iPhone MP4 or iPhone H264 video from the point that the movie starts. That is all. Just so easy!  
 

 
If you'd like to record from certain time point, or want to change some parameters like 'output format', 'video bitrates', 'frame rate', 'audio bitrates', please click 'No' button to close the window.
 
Optional parameters settings
* Select subtitles and languages
Click 'Subtitle' or 'Audio Track' in the 'Setting' menu, choose the related value you like.
* Set output formats
Choose the target file format from 'Profile'. The software supports converting DVD to iPhone 480*320 MP4 video,iPod MP4 video, iPod h264 video, MP3 audio.
 

 
* Set the start time to convert
Use the video playback controls to queue up the point at which you want to start ripping. Or click 'Setting -> Go to' and jump to previous/next chapter.
* More parameters
Click 'Setting -> Output video settings', here you can choose different profile, video/audio bitrates, video size, disable video/audio, aspect ratio, frame/sample rate, etc.
If you are not familiar with these options, please view the descriptions listed at the bottom of the window.
*Crop/cut&Resize the movie
If you want to make the widescreen dvd(16:9) to be outputted as fullscreen(4:3) video, you can use the crop function.
Set Crop to "Crop both black bands" and resize to be "stretch to full screen" if you don't need to keep the subtitle.
Set crop to "Crop the upper black band" so you can keep the subtitle in the down black band.
 

 

 
*Direct/batch conversion
If you want to rip you DVD movie into one whole file, please use the direct ripping mode described above.
If you want to rip your DVD by chapters to into separated output files (for example your music DVDs, TV Episode DVDs), you can use the batch conversion rip mode, just ticket out the titles you want to convert and click convert.
You can switch this two modes by clicking on the mode-Direct&Batch.
7. Hit 'Convert' button, choose the recording time point and quality, then click 'Yes' to begin to convert DVD to iPhone video or audio quickly.
8. After ripping, transfer the converted files to iTunes, and then sync to iPhone.
 
Part 2
 
How to convert movies to iPhone video (H.264, MP4) and iPhone audio (MP3, AAC, WAV), AVI to iPhone, MPEG to iPhone, WMV to iPhone, MOV to iPhone, DivX to iPhone, Xvid to iPhone, DVR-MS to iPhone, RM to iPhone, RMVB to iPhone, ASF to iPhone, AVS to iPhone, MPG to iPhone
 
1. Download the latest versionDVD to iPhone Converter + iPhone Movie/Video Converter Suite, and install it. You can know more about it by referring here.  
 
2. Click 'Open file' button to load the video file(s) you'd like to convert. The iPhone converter software supports batch conversion mode.
 

 
3. The default output format is iPhone 480*320 Mpeg-4 video. If you'd like to change this, click "Profile" button, set the output format to iPhone 480*320 mpeg4 video, iPod MP4 video, iPod h264 video or iPhone audio (MP3). Here, you can also set video size, frame rate and more.
 

 
4. Hit 'Convert' button to start converting video to iPhone.
5. Transfer the converted video or audio files to iTunes library and sync them to iPhone.
 
Troubleshootings (Windows)
1. Why occour a message: 'MPEG2Dec: Error during decoder initialisation' or 'unable to read from E:\VIDEO_TS\vts_01_1.vob' everytime I put any DVD in?  
Check that you select the correct DVD driver. If not, please select the correct DVD driver path.  
2. Audio is out of sync with the video or no audio
There are someone says audio is out of sync with the video or no audio at all when they used videora iphone converter, cucusoft dvd to iphone converter or pqdvd dvd to iphone video converter. It seems that there is no software can work well for ALL users and ALL DVDs.  
In fact, you might as well resolve the problem trying the following one by one.  
A. DVD to iPhone Converter: Click "Setting -> Input settings".  
(a) Check "Audio/Video Synchronisation".  
(b) Set "Deinterlace filter" to "None".  
(c) Set "Output frame rate" to other values.  
B: iPhone Video Converter: Click "Advance", change 'framerate' to 23.976 or 29.97 in 'Video settings'.  
If it doesn't work, might as well change a DVD movie to test. If still doesn't work, try another softwares.  
Load your DVD movie, set the mode you'd like to rip, and Click 'Record it'.  
3. Still doesn't Work  
iPhone official support page: http://www.apple.com/support/iphone/  
iTunes official support page: http://www.apple.com/support/itunes/
 
Part 3
 
How to Convert Rip DVD to iPhone (for Mac users)?
 
DVD to iPhone Converter provides several default iPhone video profiles, which you can use converting your DVD to iPhone Video MP4 formats. The profiles will help you get the video you like such as minimal size video, high quality video, etc. It also has many settings you can customize, for example, convert DVD to iPhone mp4 video by custom file size through setting video bit rate, rip DVD’s any titles or chapters, select target subtitle and audio track. You can get adjustable video what you want to play on your HD TV through iPhone.  
 
DVD to iPhone Converter for Mac also can rip DVD movie to iPhone straight with high video quality. It supports converting an entire DVD to one video file, and also supports ripping any segment by setting "start time" and "end time".  
 
1.Download the latest "DVD to iPhone Mac Suite Converter" or "DVD to iPhone converter for Mac", install and run it.
 

 
2.Insert the DVD movie you'd like to rip into the DVD drive,  
3.Click "DVD" button to load your DVD, select the output format and set the optional parameters like audio track and subtitle,  
4.Hit 'Convert' to start the iPod DVD conversion process.  
 
Part 4
 
How to convert videos to iPhone (for Mac)?
 
iPhone Video Converter for Mac can not only convert AVI, MOV, MPEG, DivX, WMV, VOB, XviD to iPod video MP4, but also extract/convert media files to iPod audio M4a, MP3 on Mac, also it support batch conversion.
 
1.Free download "DVD to iPhone Mac Suite Converter" or "iPhone Video Converter for Mac" install and run. It.
 

 
2.Load your video files by click the 'Add' button
3.Set your the audio channels, video size and frame rate etc or you can leave it to the default setting.
4.Click the "Encode" button, that's it!
 
Part 5
 
How to transfer video to iPhone.
 
You need iTunes version 7.30 or later to sync music and video to iPhone.
If you don’t have iTunes yet, you can download free from here.
http://www.apple.com/itunes/download/
 
If you already have iTunes, just create a play list; drag your music and video to the list (set your iTunes to “manually manage music and video”), connect your iPhone to computer via USB cable, then click iTunes “File -> Sync iPhone”, Done.  

Find a great site for someone who wants to convert DVD, youtube, limewire, myspace and any free video to iTunes for iPhone,iPod touch/classic/nano/video, Apple TV. There are some software which can do the work well:
http://www.dvdtoitunes.net

Nice guide. Also, you can find some best DVD and video conversion software for iPod, Zune, PSP, iPhone, etc on Windows and Mac OS here:
http://www.dvd-video-converters.com/

A great iphone software site, it reviews every DVD to iPhone Video Converter and select the best DVD to iPhone, video to iPhone, flash to iPhone, iPhone Video Converter for Windows and Mac user.  
http://www.dvd-to-iphone.biz/

I get sick of the whole syncing thing. In the past several sync, half my albums do not have any art even though it is right there in itunes. What gives?

I suggest you go to apple forum, there are many posts about these questions.
http://discussions.apple.com

I heard Apple will release the new iPhone on the Macworld 2008, is it true?

uhh.....  right...

Maybe there will be a big surprise.

I did not synch my playlist to my laptop before my iPhone froze and needed replacement. I can not see the songs on iTunes in my playlist but I can see that I purchased them in my account. Where do I find the songs that I purchased on my first iPhone?

In iTunes authorize the account and then you can go to the top menu and "check for purchases".

   There are a lot simple applications.. Easy to use:  http://www.sp-s.com/digiters-dvd-v [...] 60-14.html  Free: http://easynews.dl.sourceforge.net [...] .7-app.zip

Apple has announced that it will be adding five new applications to the iPod touch, including Stocks, Mail, Notes, Maps and Weather as found on the Apple iPhone.  

How to update map on iphone? I went apple website but it just shows video with update announcement...

lullz!

Ok. In my itunes. I clicked on "manually manage music and videos" and suddenly all my music and videos are deleted on my iphone! Is it possible to recover? I don't have the files on my current computer.

sure, you can contact the the Apple to get them recover

I use converter TuneCab, it has many features such as audio conversion, video conversion, extract sound from video, remove DRM, download and convert video from YouTube etc. Easy to use all in one software! http://www.tunecab.com