Optimizing videos for Multimedia Manager upload

Requirements

There are two main requirements when uploading video: size and file type.

  • Size: The maximum limit for a single upload is 500MB. Smaller files will upload and convert more quickly.
  • File types: Media Manager will accept the following video formats: .mov, .mp4, .mpg, .wmv, .avi, .m4a*

If your video files are in a different format, there are several free software programs that can help you convert your file into one of the formats listed here, such as Handbrake.

* The .m4a format is common with enhanced podcasts from GarageBand, or videos taken with an iPhone/iPod. These files will only create a 360p version. If you are unable to upload videos with an .m4a or .m4v file extension, change the file extension to .mp4 and try again. For more information, refer to the Knowledge Base article Uploading .m4v or .m4a files to Multimedia Manager.

Considerations

Resolution: Media Manager is capable of converting a video file into four versions. 360p and 480p versions will always be generated by Media Manager, but if you also want HD videos - with 720p or 1080p - the uploaded source files dimensions must meet the height requirements. 

Target Quality 4:3 (W x H) 16:9 (W x H)
360p 480 x 360 640 x 360
480p 640 x 480 854 x 480
720p 960 x 720 1280 x 720
1080p 1440 x 1080 1920 x 1080

In other words, Media Manager will always create small (360p) and medium (480p) versions of your video files and will serve them up to end users as appropriate - users with smaller screen sizes will ordinarily see smaller videos (because larger resolution videos would have to be reduced anyway to fit on the screen). In order to create large (720p) or extra-large (1080p) videos, you must first start with videos that have at least 720 or 1080 lines of vertical resolution, respectively.

For further information on standard video resolutions and aspect ratios, see Optimal dimensions for uploading image/video files.

Frame Rate: 24 or 30 FPS (frames per second) are common settings for a video camera. If your output will be 480p or above, then your typical FPS setting will be 30fps.

Bitrate (variable): This list of standard bitrates will help guide you in your conversion process. These rates are based on different video sizes/resolutions.

Target Quality

Bitrate

360p

450k

480p

900k

720p

2400k

1080p

4800k

Note: If there is a great deal of movement or action in your video, you may see some distortion or pixelation in the final output in Media Manager. In that case, you may consider going back to your original source video and preparing a new copy for upload with an increased bitrate. There may be some trial and error here with certain types of files. 

Audio Codec: AAC is the audio codec used by Media Manager. However, .mp3 files will still upload without a problem.

Video Codec: .H264 is the video codec used by Media Manager.

Tips

  • Balancing quality and file size can take a lot of trial and effort. Many users are willing to sacrifice some quality for increased load times. After all, the quality of a video doesn't matter if the user gives up on watching it. Check out the following Knowledge Base articles to learn more about file sizes and how to keep your uploads lean:
  • You can always reduce the quality of your uploads from the original source to reach your target quality, but it's difficult to increase from the original. Therefore, it helps to keep a high-quality reference file archived that you could return to in order to generate a new version for the website, if necessary.
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