mp4 is the right format for nokia, but if you can’t play mp4 on your nokia5230, you just need some codec, like avc. You may try a video converter which has an option of profiles for mobile phone.
You can download the trial version for evaluation. Next you can find some converters to use.
Video Converter Platinum Play MP4 on Nokia 5230
Video converter platinum can convert between any video formats including MPG, MPEG, MPEG2, VOB, MP4, M4V, RM, RMVB, WMV, etc and extract audio from these video. It also converts between all audio formats including MP3, MP2, AAC, AC3, WAV, MID, MIDI, WMA, M4A, RA, RAM, OGG, APE, AU, FLAC.
Aiseesoft Total Video Converter Play MP4 on Nokia 5230
Aiseesoft Total Video Converter is the Best total video converter to convert video.
This professional total video converter can convert between almost any video and audio formats such as avi, wmv, flv, 3gp, mp4, rm, mov, dat, mkv, hd ts, rmvb, mpg, mpeg-1, mpeg-2, divx, xvid, asf, swf, 3g2, m4v, dv, QT, mp3, aac, ac3, wma, wav, ogg, flac, m4a, ape, etc.
AVS Video Converter Play MP4 on Nokia 5230
Nokia5230 support 3gp and mp4 format, so use AVS Video Converter for all video conversion, some people used it to convert all DVD rips from .avi to .mp4’s for iPod.
Here’s some of the features from their site:
Convert Video between Almost Any Formats:
HD Video (inc. AVCHD, MPEG-2 HD and WMV HD), TOD, MOD, M2TS, AVI (DivX, Xvid, etc.), MP4 (inc. Sony PSP and Apple iPod), WMV, 3GP, QuickTime (MOV, QT), SWF, DVD, VOB, VRO, MPEG-1, 2, 4, H.263, H.264, Real Video, DVR-MS, MKV, FLV etc.
RZ Video Converter Play MP4 on Nokia 5230
AVC MP4(AVC/H264 video codec, aac audio codec) format, so you just need to use a right software to convert your mp4 videos to the right Nokia 5230 mp4 videos.
The RZ Video Converter which can convert any videos or audios between different formats with good quality, such as convert your mp4 videos to the right Nokia 5230 mp4 videos, etc. Yahoo or google search and download RZ Video Converter.
Super Converter Play MP4 on Nokia 5230
It can help you to convert your videos and encode them in mp4 h264 format to be able to play them in your mobile. Alternatively, download and install core player for symbian s60 5th edition from here and use it to play the videos.