Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Can you change the video output aspect ratio to 4:3 to view older shows?
Document: If you plan to use this for rmvb playback don't bother. even though it does play it technically, it is useless unless you want 20 fps even on 480p videos, and also you don't need to fast forward, or skip, which it can't do.The only reason why I give it 3 stars is that playback of other video types are pretty nice, like m2ts from my panny micro 3/4.
This is because the media companies have forced a law on consumers that does not allow manufacturers to provide Component or DVI outputs any longer. Since my television does not have HDMI, I was forced to shop for an older model streaming box that provided Component output. The first box I purchased was returned right away for issues I will not go into in this review, because this is a review for the Iomega ScreenPlay DX.
Browser feature is worthless. Do not let that factor into your decision.The settings that you can change are very limited, and offer little flexibility in the way your interface behaves. Most notably, changing the movie files from list view to gallery view: for one, despite the advertising telling you that you can do it, there is no way to add an icon or preview image to movie files (such as the DVD box cover).
It comes with an Ethernet port on the back for hard-wired Internet (recommended) and a wireless USB Ethernet dongle for wireless connections, in case you absolutely cannot hard wire the unit. The software boots relatively quickly. * THE BAD *I mentioned you can use a USB wireless keyboard and you may want to do this because the included remote is a nightmare. It looks larger in the photo than it actually is. I didn't measure it but I'd guess it's around 3-4 inches square.
I like the fact the device allows me to also view streaming video from the Internet like Netflix, VUDU, and Amazon.
It displays the DVD covers, fan art backgrounds, movie synopsis, information on the actors, the audio/video CODECS used in the file, the playing times. It lists your television series by season, episode, shows banners, backgrounds, episode synopsis, keeps track of which shows you've watched, allow you to rate each episode and does all these things in various layout styles. When you play your MP3s, it shows cover art, background, even automatically downloads lyrics.
I found a work-around for this, should you own this box and want to access other computers. I installed the Plex Server application on my server and was able to view it from the Iomega without it asking for a login. Still not sure why this worked, but it did.The Iomega would have trouble playing all of my videos. It could not handle certain audio/video CODECS, though I can't remember now exactly which ones.
It does have RGB (Component) so having an S-Video output on my computer graphics card, I used an S-Video to Component adapter to connect my television and used MediaPortal software. It was great, that is, until I upgraded my graphics card and realized it did not have S-Video output. Faced between buying a new TV or a dedicated streaming box, I chose the streaming box route, due to its lower price and less difficulty.
This is my 2nd unit I bought and this device works like I expected, except one weird thing that I have to change the word video_ts to capital VIDEO_TS so the device can read my video content.Hope they can fix that on the next update driver.
Provides beta web browser i.e., you can't play anything out of website which ruined my happiness. If it supports Flash it would have been instant hit.E.g. can't play any video from CNN, CNBC!!! !This reduces 1 point in rating.2. Struck when it can't run file types. But "Eject" button is helping to move back to home screen.3. Very very small letters when you are typing. Literally invisible. Just assume you are typing correctly!
Answer: Yep. You can.