Steps for offering video on demand
The technology behind vodcasting is the same as the magic that makes up podcastingRSS. By preparing your movies properly and creating the right feed, you can offer your audience video on demand through an application familiar to us all: iTunes 4.9, a version of iTunes that supports playback of local and streamed video. Heres how to go about creating and distributing a vodcast of your own.
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alright here we go
Tools Youll Need:
- Some kind of server connected to the Internet (this can be your iDisk, although the faster and more sustainable the server connection, the better)
- A website for hosting the XML file that allows iTunes access to your video
- QuickTime Pro 7 (for encoding your video in a format such as H.264)
Vodcasting is nothing without video. Use a video application such as iMovie or one of the Final Cuts to create your movie. To get great looking video at a smallish size, use the programs Export command to save the movie in H.264 format.
Step 2: Compress the movie
Open the movie in QuickTime Player Pro 7. Choose Export from the File menu and in the resulting Save Exported File As dialog box, choose Movie to MPEG-4 from the Export pop-up menu. **** the Options button and in the MP4 Export Settings window that appears, choose MP4 from the File Format pop-up menu. In the Video Format pop-up menu select H.264. To keep file size smaller, select a modest image size (say 240 x 180) and a frame rate of 15 fps. (Of course, if youre delivering a small file to begin with, feel free to increase the image size and frame rate.)
**** the Audio tab and make sure that AAC-LC (Music) is selected in the Audio Format pop-up menu and choose a modest data rate from that pop-up menu (48 kbps, for example). Youll save even more space if you choose Mono from the Channels pop-up menu and an output sample rate of 32.000 kHz.
**** the Streaming tab and enable the Enable Streaming option. **** OK to dismiss the window and **** Save in the Save Exported File As window to compress your video. Compessing the movie could take quite a while if its long and large.
Step 3: Put it on the server
Mount the server from which the movie will be delivered and place the compressed movie file in a download directory for your websitefor example, ~/Library/WebServer/****/yoursitename where yoursitename is the name of, well, the website that will deliver your content.
If you dont have a server, you can use your iDisk. To do so, mount your iDisk and place the movie file in the Sites folder.
Step 4: Create the XML file
The XML file you create will allow iTunes to access your movie. In the text box below youll find an example file to get you started. Simply copy the code from the box below, paste it into a plain text TextEdit ****, replace the example entries with entries that match your needs (for example, Your Movie Title should be replaced with the real title of your movie), save the file with the .xml extensionmyvodcast.xml, for exampleand youre good to go.
<?xml version="1.0" encoding="UTF-8"?> <rss xmlns:itunes="http://www.itunes.com/DTDs/Podcast-1.0.dtd" version="2.0"> <channel> <title>Vodcast's Title Here</title> <itunes:author>Your Name Here</itunes:author> <link>http://www.sitename.com</link> <description>A description of your vodcast's channel</description> <itunes:subtitle>A subtitle for your vodcast's channel</itunes:subtitle> <itunes:summary>A summary of your vodcast channel</itunes:summary> <language>EN</language> <copyright>(c) 2005 Your Name</copyright> <itunes:owner> <itunes:name>Your Name</itunes:name> <itunes:email>youremail@example.com</itunes:email> </itunes:owner> <category>Technology</category> <itunes:category text="Technology"></itunes:category> <item> <title>Your Movie Title</title> <itunes:author>Your Name</itunes:author> <description>A description of this movie</description> <itunes:subtitle>A subtitle about this movie</itunes:subtitle> <itunes:summary>A summary of your movie</itunes:summary> <enclosure url="http://www.yoursitename.com/moviename.mp4" length="1024" type="video/mov" /> <guid>http://www.yoursitename.com/moviename.mp4</guid> <pubDate>Tues, 25 July 2005 10:00:00 GMT</pubDate> <itunes:explicit>no</itunes:explicit> <itunes:duration>00:01:35</itunes:duration> <itunes:keywords>keyword1, keyword2, keyword3</itunes:keywords> </item> </channel> </rss>
Note that youll need to fill in the length of your movie in the itunes:duration area of the xml file. To learn the length of your movie, open it in QuickTime Player and drag the playback bar to the end of the movie and look at the timecode readout. Enter this number in hours:minutes:seconds01:12:32 for 1 hour, 12 minutes, and 32 seconds, for example. You may also want to add keywords so that those creatures that prowl the web can more easily index the content of your movie.
If youd like to point to additional vodcasts to the file, copy the lines of code between the ITEM and /ITEM entries and paste them before the line of code that reads /CHANNEL.
Step 5: Place the XML file
Place the completed XML file in the same directory as your movie(s). If youre using your iDisk, place the XML file in the Sites folder.
Step 6: Test in your browser
Launch your browser and enter the address to your XML file in this form: http://www.yoursitename.com/yourvodcast.xml. A page should appear that lists the title of your vodcast at the top along with a Read More link that, when ****, takes you to a page where you can view your movie. The URL in the Address field should have changed so that feed replaces http, as in: feed://www.yoursitename.com/yourvodcast.
Step 7: Check it in iTunes
Launch iTunes 4.9 and select Subscribe to Podcast from the Advanced menu. Enter a URL along these lines: http://www.yoursitename.com/vodcast.xml where yoursitename is the name of your website and vodcast.xml is the name of your vodcasts XML filehttp://www.example.com/coolcast.xml, for example. If youre doing this via iDisk, youd type something like http://homepage.mac.com/example1/coolcast.xml.
When you enter this URL in the Subscribe to Podcast window and then **** OK, an entry for the vodcast will appear in the Podcast playlist within iTunes main window and the video will begin downloading to your computer. **** the Play button and the video plays in the small video window in the lower left corner of the iTunes window. **** on this window and the video appears in a larger, separate window. Control-**** (Mac) or Right-**** (Windows) on this window and choose Full Screen to view the video at full screen.
Step 8: Let the world know
Send the link to your vodcast to your nearest, dearest, colleagues, contacts, and those you simply wish to make jealous and instruct them to enter that URL in the Subscribe to Podcasts window to view your work. Your video will appear in iTunes Podcasts area.
