Video


If you have a Zune 30 or 80, you probably know you can watch videos, podcasts, and view pictures and album art on your television. What you may not know is that you do not have to buy an expensive dock or cable from Microsoft to do it. If you are like me, you have a cable from a camcorder lying around somewhere. If not, you can pick one up for cheap. You can also use a scrap iPod cable if you happen to have one buried in your junk drawer.

Using this chart from anythingbutipod.com, we can determine the pinout of the Zune A/V cable:

Zune A/V Cable Pinout

The only difference between a standard camcorder cable and the Zune is that the right audio channel (the red connector) and the composite video channel (yellow connector) are reversed. This is easy enough to fix. Plug the cable into the Zune and then connect as follows:

Cable’s Yellow Connector –> TV’s Red Connector
Cable’s Red Connector –> TV’s Yellow Connector
Cable’s White Connector –> TV’s White Connector

If you are using an iPod Video cable, the chart shows that the video channel is the same. Only the left and right audio channels (red and white connectors). To use the cable, connect as follows:

Cable’s Yellow Connector –> TV’s Yellow Connector
Cable’s Red Connector –> TV’s White Connector
Cable’s White Connector –> TV’s Red Connector

Once the Zune is plugged in, follow these steps:

  1. Set your TV to use the input you have your Zune connected to.
  2. Go into the Zune’s “settings” menu. Select “tv out”. You will see a message informing you that to turn off “tv out” you need to hold the play/pause button down and shut off the Zune.
  3. Confirm the message.

You should now see the Zune’s main menu on your TV. One thing to note that I found confusing at first: when viewing on the TV, the Zune’s controls are always oriented vertically. Even when watching videos, the Zune is held as if listening to music.

Think back to math class.  Remember when your teacher said, “Pay attention!  This might save your life some day.”  Well, today is that day.  OK, so this might not save your life… unless your life depends on transcoding videos correctly.  Sometimes it is necessary to resize a video to make it fit the Zune’s display.  To do this one needs to understand aspect ratio.

A ratio is simply a comparison.  Like “16 to 9″or “4 to 3”.  Ratios can be represented with a colon between numbers (16:9, 4:3) or as fractions (16/9, 4/3).

The aspect ratio of a video is a comparison of the video’s width to it’s height.  An aspect ratio is always expressed as a ratio of the longer side to the shorter side.

Normal screen video has an aspect ratio of 4:3.  Regardless of the video’s actual dimensions, for every 4 pixels of width, the video will have 3 pixels of height.  Examples of 4:3 include 320×240 and 640×480.  If you pull out a calculator, you will find that 640/480 = 320/240 = 4/3.

Wide screen video has an aspect ratio of 16:9.  For every 16 pixels of width there will be 9 pixels of height.  Examples include 320×180 and 720×405.  Again, with the calculator, 720/405 = 320/180 = 16/9.  (Note: there are actually several ratios that are “widescreen”– 15:9, 16:10, etc.  16:9 is the aspect ratio for HDTV.)

Now that we understand the basics, let’s apply them.  Let’s assume that you have downloaded a video in AVI format and found it to be 450×300.  You decide to resize the video to fit the Zune’s screen while converting it from AVI.  To maximize screen usage, you know that the new width will be 320 (the width of the Zune’s screen).  To calculate the new height, we need to compare the width/height ratio of the source video to the ratio of our new video:

Aspect Ratio Example

450/300 is the ratio of the source video’s width and height.  320/H is the ratio of our transcoded video.  320 is the new width and H will be the new height.  Following the steps, we get 213.33.  Always round decimals to the nearest power of 2.  Doing this makes the new height of the video 214.  You can now start your favorite video transcoding software and set the output video’s resolution to be 320×214.

Video gurus may find this information very basic.  If you have something to add, please comment!  For those of you that are new to converting videos, I hope this makes transcoding your next video a little easier.