How to Enable More Video Formats Playback on iPhone?

Won’t it be a mood-killer when you are planning to watch some videos on your iPhone and suddenly realize that it only supports that few video formats while travelling on the train or bus? That’s no big deal; you can get rid of such awkward moments either by downloading some universal media player, or by converting the formats.

How to enable your iPhone play more videos of various formats? There are several solutions to get this solved.

1. Free video players:

FlexPlayer

FlexPlayer is free media player for iPhone and iPod Touch as well as iPad.
Video formats it supports: AVI, MPEG, VOB, MKV, MP4 and MOV, FLV DivX, Xvid, and even Webm, etc. Playback of HD videos for QuickTime formats up to 1280x720 is available.
It possesses a user-friendly interface without ads. But it lacks of multiple audio track support and only hard subtitles allowed. Actually, you may encounter WMV video format, which may be a big flaw for it.


AcePlayer

Aceplayer is compatible with iPhone/iPod/iPad. Just transfer the media files to your i-devices by iTunes File Sharing or through Wi-Fi, video will be played.
Video formats it supports: WMV, AVI, RMVB, RM, MP4, 3GP, XVID, MPG, etc.
Audio formats supported: MP3, RM, ACC, FLV, RM, etc.
Subtitles: .smi, .srt, ssa, .ass, .sub txt.
But from its website, it seems it is not always free.

iPhone, iPod, iPad Video Player: Aceplayer

AcePlayer can play almost any file format movies and streaming directly on iPhone/iPod/iPad. Just transfer the media files to your ios devices by iTunes File Shareing or over Wi-Fi,then it can be played at once. With built-in downloader and FTP/Samba client, it is not just a local movie player,it is "Movie Player & Downloader & Streaming Media Player" in fact. You can also stream/download media files from most of all UPnP/DLNA media servers to your ios devices. Note: AcePlayer can not work on iPhone 3G and iPod gen1/gen2.
Features
1.Support almost any video formats: WMV, AVI, MKV, RMVB, RM, XVID, MP4, 3GP, MPG...
2.Support almost any audio formats: MP3, WMA, RM, ACC, OGG, APE, FLAC,FLV...
3.Support smi, srt, ass, ssa, sub txt subtitle.
4.Use iTunes to sync movies to AcePlayer.
5.Easily Wi-Fi transfer to download media files from PC to your ios devices.
6.Build-in Open Url Client to support HTTP, FTP, MMS, RTSP, SMB, RTP streaming.
7.Build-in UPnP Client to stream/download media files from most of all UPnP/DLNA media servers.
8.Build-in FTP Client to stream/download media files from FTP Servers(Note: stream only for PASV mode).
9.Build-in Samba Client to stream/download media files from Samba Servers.
10.Build-in file manager supported: move files from folder to folder,file delete,file rename,folder creation,folder delete.
11.Build-in file downloader. You can download files from FTP/Samba/UPnP Servers, and resume or pause downloads.
12.Multi playlist supported: you can create playlist and and media file to playlist, and every folder is automatically made as a playlist.
13."Open In" feature supported: open video and audio files from Mail email attachments and Safari Web browser.
14. aceplayer://URL scheme.
15.iPad 2 dual core decoding supported.For iPad 2,dual-core of A5 chip could be used to decode at the same time.
16.TV out support.
17.AirPlay supported(Note: only for QuickTime plugin).
18.Buid-in photo viewer to support:jpeg, jpg, png, bmp...
19.It can play music in the background mode, so that build your playlist, you can us it as a music player.
20. You can set password for your folder in the documents, just click the button on the right of the folder.

Below is a video from YouTube showing how to use Aceplayer on iPhone: 

From apple