Adobe Captivate lets you publish your projects as MP4 files by choosing any of the following presets:
Smart devices, such as, Apple iPad and iPhone.
YouTube formats, such as, YouTube Widescreen HD, and YouTube Widescreen SD.
Any custom settings.
F4V publishing is replaced with MP4 publishing in Adobe Captivate 5.5 and later.
When you select a smart device or a YouTube format, Adobe Captivate automatically sets the optimum video settings for the chosen option.
If you have used a device or a YouTube preset while creating the project, an appropriate option is displayed automatically in the Publish dialog box.
Click one of the options in the Select Preset list.
Adobe Captivate automatically sets the video settings based on the option you select. If necessary, you can customize the settings by selecting the Customize Video Settings check box. For the description of the settings, see Video settings.
It is recommended that you retain the default settings for optimized outputs.
Upload it to the device stores or to YouTube.
Distribute the file to your users as a stand-alone video over email or host it on your web server.
Stream or embed the MP4 file using Flash.
The profile of the H.264 encoder/decoder.
The higher the profile, the higher is the complexity involved to encode or decode.
The degree of the required decoder for the selected profile. The higher the level, higher is the degree of complexity associated with the decoder.
The maximum bit rate to be used by the encoder. This option available only when you choose variable bit rate.
After specifying the video settings, click Test Settings to verify whether the custom settings are valid.
Some best practices while customizing the video settings:
The higher the profile or level, the greater is the chance of reducing the file size.
Constant bit rate provides a file with lower size compared to variable bit rate.
When you specify a variable bitrate, the encoder decides when to use more bits to maintain good quality. The file size increases when more bits are used. You may encounter issues while streaming such files as more number of bits can be downloaded to show specific sections of a movie.
In the Tags field, type the tags for the project to optimize your users' search for the project. Use commas or semicolons to separate multiple tags.
Generally, the tags are the search terms that your users use to search for your project on YouTube. Some examples are the subject of your project, or the key terms in the project, or the title.
Public: To make your project available for everyone who accesses YouTube.
Private: To make your project available to only specific set of users. After uploading the file, log on to YouTube, and provide permissions for such users. For more information, see this website.