Different from common online video converters, there is no maximum file size limit.
You can convert QuickTime MOV and other files to MP4 online for free. FVC Free Online Video Converter is a free video to MP4 converter for Windows and Mac users. You may also chop/clip a media file, or extract the audio to make a ring. Also audio profiles: m4a (aac-audio only), 3ga (aac-audio only), oga (flac-audio only) are available for convenience. Media Converter allows you to convert all kinds of media formats to popular media formats: mp3, mp4 (mpeg4/h264,aac), ogg (theora, flac), avi (mpeg4, mp3), mpeg (mpeg1, mp2), flv (flv, mp3), gif and wav.