VIDEO STREAMING AT ITP

This is all the information you need to know for streaming at ITP.

Equipment

All necessary equipment should be found in the Streaming Kit.
Equipment Checklist:

streaming laptop + power supply

Sony TRV950 (video camera) + power supply

firewire cable (4-6 pin)

tripod

shotgun microphone

beachtek

XLR cable (male - female)

mic stand

headphones

Using the Streaming Laptop

Turn on & log into ITP Streaming Laptop.

username: ITP student

password: [the usual]

Launch Quicktime Broadcaster.

NOTE: Make sure the camera is plugged into the computer and turned ON before you launch the program.

Check to see that the audio, video, and network settings are using the preset "ITPLive".

Under "Network", change "Title" to the title of the talk.

Make sure "Record to disk is selected".

Hit "Broadcast".

Check audio. Headphones should be plugged into the computer.

Check to see if stream is coming through.

Open the "itptv.mov" file on the desktop to see if the stream is working through Quicktime.

Go to http://itp.nyu.edu/itplive to see if the stream is working through the browser.

Manual Instructions

username: itp-student password: [the usual]

[More manual setup instructions to come]

Saving Archived Stream as Quick Start File

Use VLC to convert archive created by QTBroadcaster to "Fast Start" Movie for presenting on ITPLive site:

Open VLC and choose "Streaming/Export Wizard" from the File menu.

Select "Transcode/Save to file" and click "Next"

Check "Select a stream" and click "Choose"

Navigate to the archive you just created (probably in the "Movies" directory for the current user) and click "Open" then click "Next"

Make sure that both "Transcode video" and "Transcode audio" are NOT checked and click "Next"

For the "Encapsulation format" choose "MOV" and click "Next"

In the text box labeled "Select the file to save to" click "Choose" and create a file with a ".mov" extension. This will be the exported file when you are done. If you are converting an ITPLive file, name it itplive_daymonthyear.mov. Example: itplive_07092007.mov for a Sept 7th event.

Click "Next", review the settings and click "Finish"

Open up the movie you just created to make sure it works as it should and then follow the "Upload to Archive Instructions" below.

There is also a bunch more here about doing the settings up the right way should the presets not work:
https://itp.nyu.edu/~sve204/cgi-bin/pwiki/wiki.pl?PPM_Live_Stream_Settings_Example

Realtime Streaming

Realtime streaming is most often used to broadcast live video and audio over the Internet. You'll still have a file in your directory on the Quicktime server, and you'll still refer viewers to that URL, but the bulk of the work is done by a separate computer running Quicktime Broadcaster, a free download from Apple's Web site. Basically you capture video in realtime using a camera attached to the broadcaster computer. That computer compresses and encodes the video as fast as possible, and then sends that information over the network to the server. The server then makes the video available to all the users connected to it.

Quicktime Broadcaster

You can download and install the software for free on any Mac running OS X. First, plug in an iSight, a DV camcorder, or another Firewire camera, then start up Quicktime Broadcaster. Configuring the broadcast is easy.

First, click the Show Details button if it's available. Click on the Audio tab and choose a preset based on your intended audience and the type of footage you plan to shoot. If you know a lot of people are going to view your clip over a dial-up connection, for instance, select one of the modem presets. The details at the bottom of the window change according to which preset you select. Then click on the Video tab and choose a preset and a source.

Finally, click on the Network tab to point Quicktime Broadcaster to your directory on ITP's Quicktime server. The host name should be qtmedia.itp.tsoa.nyu.edu. The file should be yournetid/filename. (There's no need for a ~ tilde character before your net ID, and the file name can be whatever you want.) Your username should match your net ID (again, no ~ character) and your password is the password you chose when you set up your account on the Quicktime server. You can leave everything else just as it is.

If you want to save the stream to your local computer (the broadcast computer), check the Record to disk box on the left of the screen. Then click the Broadcast button to start streaming. Users can connect to the stream with a URL like this: rtsp://qtmedia.itp.tsoa.nyu.edu/yournetid/yourclip.sdp

(Notice the URL starts with rtsp and not http. It stands for Real Time Streaming Protocol and it tells your Web browser to handle it a little differently than other media.)

Page last modified on November 12, 2007, at 12:28 PM