M4V files can be converted to the MP4 format using the online service Cloud Convert. This website allows you to upload your files to the site, where they are converted and made available for download or distribution via email. You can also send the finished file to a Dropbox account.
Several customization options are available when converting M4V files using Cloud Convert. One useful option is the ability to shorten the film by cutting it at the end or the beginning. To do this, simply select the desired in and out points after the file has been uploaded. The option is also available to change the video’s resolution. The site features common resolutions, such as 720p and 1080p, along with support for custom resolutions as well. Another useful feature is audio normalization, which allows you to increase the volume of the original movie file if you feel that it is too quiet.
When converting an M4V file, remember to keep a copy of the original file so you can later convert it to another format easily or export it as an MP4 file again if you decide you don’t like any of the changes you made with the customization options.