|Why reencode your video?|
In TV studios and production companies, massive MOV files rule.
All files uploaded to the streaming server will be encoded by the server for Internet streaming in the server’s preferred version of the MP4 format.
While the server is very good at converting various video formats, unexpected encoding issues may arise. There is much less chance of this if the uploaded video is in the preferred MP4 format. You have the additional benefit of faster uploads than with other file formats like MOV.
Recommended Video Format
The MP4 container format using the H.264 video codec and the AAC audio codec is recommended. This is also the “native” format of our video hosting service.
If you are in control of the format (e.g. when exporting the video from your editor), we advise you to always upload videos using this format. All widely used editing, compositing, screencasting and transcoding tools support it.
If you don't have a choice, most video formats have been successfully uploaded. Examples are 3GP, AVI, FLV, MOV, MP4 and WMV.
There are a few noteworthy formats that are not supported:
Note: Video files with larger dimensions will be reduced by the streaming server during encoding. For example a 1920x1080 will be reduced to a 1280x720 and you will have gained nothing by uploading the larger dimension file other than a longer wait for the upload to complete.
Video files with smaller dimensions will still work. I'd recomend around 640x480 (standard) and 720x404 (wide) as acceptable lower limits.
The sampling rate should be 44,100 Hz.
Recommended File Sizes
Ideal file size is around 10 to 20 MB per minute of run time.
Some chapters have used MPEG Streamclip. For Windows and Mac. http://www.squared5.com/.
I prefer using WinFF myself. It is a graphical interface for the Swiss Army Knife of all encoders, FFmpeg, and it comes bundled in a Windows installer that can be downloaded from http://winff.org/html_new/downloads.html. Choose the link "WinFF 1.5.4 Windows Installer (all windows versions)" unless you know for sure you have 64 bit Windows.
There are many more settings associated with video encoding. Here are some additional suggestions to follow when exporting your video for upload: