Known as editor quickly and precisely with professional, flexible editing tools; achieve the look you want with a robust suite of color correction and image adjustment tools, Final Cut Express is considered a step above iMovie in terms of capabilities, but a step underneath Final Cut Pro and its suite of applications.
The latest Final Cut Express 4, which although it does not support real-time editing in the AVCHD format, features an open format Timeline, provides iMovie '09 compatibility, and offers sophisticated effects and filters. It does not include Soundtrack 1.5, but it does still include LiveType which enables users to create advanced text for the movies they create in Final Cut.
FCE works natively with QuickTime DV and AIC video formats at standard resolutions and frame rates. It does not work well with any other formats, especially non-frame based formats like MP4. It has no native support for AVCHD as well as no support for 24 frame/s timeline. If you have had enough of its video format limit, you can choose to change a video editing software, or you can get a video converter which can help you convert videos to FCE supported formats.
iOrgSoft Video Converter for Mac allows Final Cut Express users to convert the FCE unsupported video formats to one of the recognized formats by FCE. It recognize a host of video and audio formats including MP4, MOV, FLV, WMV, MKV, AVI, 3GP, 3G2, RMVB, AVCHD, MTS, M2TS, MXF, XAVC, MOD, TOD, MP3, AAC, AIFF, WMA, WAV, and more. It also allows you to adjust the output frame rate for FCE. Besides, it also has preset for popular applications and devices such as iMovie, Final Cut Pro, iPad, iPhone, Apple TV, Samsung, Tablet, Windows phones, etc.