Netflix is undoubtedly the most widely used streaming service in the US. Most of the consumers looking to purchase the Roku 2 are probably looking for just a Netflix streamer. Keeping this in mind, we have a whole section devoted to the Netflix streaming experience.

Roku 2 was introduced with some Netflix streaming improvements that finally brought it on par with the PS3 experience. To recount:

  • Roku 2 XS and XD support 1080p Netflix streaming for selected titles
  • Roku 2 supports Dolby Digital Plus 5.1 channel audio bitstreaming for selected Netflix titles.
  • Roku 2 supports subtitles for selected Netflix titles

The gallery below has some screenshots of the Netflix app in action:

An important feature of the Netflix app is the adaptive bitrate streaming aspect. In layman's terms, the app seamlessly shifts to a lower bitrate stream if it recognizes that the bandwidth available is not enough to sustain the current playback bitrate. In a similar manner, it moves on to a higher quality stream as soon as the device is provided with more bandwidth.

I set up an interesting system to test the effectiveness of this scheme. Using an ASRock CoreHT 252B, I connected the wired Ethernet port of the Roku 2 to the PC, which was acting as a router. This port was bridged with the PC's wireless connection to enable access to the Internet for the Roku 2 XS. Wireshark was used to track the network characteristics of the Roku 2. NetBalancer Pro was also used to artificially limit the available bandwidth for the wired Ethernet port (and by extension, the Roku 2).

Our Netflix test stream was the 41 minute long documentary, National Geographic: Lewis and Clark: Great Journey West. I was connected to the Internet with a Comcast 20 Mbps plan, and in the first experiment, I made sure to give the Roku 2 unfettered access to all the available bandwidth. In the other experiments, I set the available bandwidth at 6 Mbps, 3 Mbps and 1 Mbps respectively. The graphs with the instantaneous data rates from WireShark are presented below.

Back in June, DSLReports indicated that the 1080p streams with 5.1 audio came in at 4.8 Mbps for the video and 384 kbps for the audio. Sure enough, we see that the default and 6 Mbps graphs show values around that mark. The anomalous value of the average bit rate (and by extension, amount of data downloaded) in the default graph are due to inaccuracies in the start and stop timestamps for bandwidth measurement. The intent of the graphs is to convey that adaptive bitrate streaming works, and indicate the bitrate which a consumer might end up with depending on their connection speed.

How low can one throttle the bandwidth before the app gives up? One might expect the multichannel audio to give way to a stereo version first, but, even at 384 kbps, the audio continued to remain at 5.1. Instead, the video quality took a very big hit. Somewhere around 384 kbps, the app entered a prolonged 'Loading' screen. After 5 minutes of waiting, I removed the throttling. As the last three bandwidth graphs from NetBalancer in the gallery below show, the app takes a good 3 - 4 minutes to move from the lowest quality stream to the highest quality stream once the bandwidth restrictions are lifted.

The Netflix app is not really user friendly, and I did find many discrepancies between the PC version and the Roku 2 version. For example, the 23.976 short movie presents a host of language and subtitle options on the PC as well as the Boxee Box. On the Roku 2 XS, I could get only English options for both audio and subtitles, and the playback refresh rate was not at 23.976 Hz. All in all, it is not the perfect Netflix experience, but one can't complain too much because this is the only sub-5W streamer that can do both 1080p and 5.1 channel audio from Netflix.

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  • isorashi - Tuesday, October 04, 2011 - link

    I only use it for Netflix in the bedroom, and for that it serves its purpose pretty well. I did get the XS model though, and was really disappointed that they yanked support for MKV containers. When I ordered it, I actually checked that it supported matroska, but when it arrived days later I discovered that the information I had read was out-of-date. They actually had supported formats listed in two different locations on their site, and I just happened to look at the old one. :-/

    I tend to rip dvds to a format that my ps3 supports, and the roku plays those back perfectly fine. However, I was planning on watching fan-subbed anime using the roku, but the lack of MKV support blew that plan out of the water.
  • Aditya369 - Tuesday, October 04, 2011 - link

    Any idea, when youtube is coming back to roku2. Reply
  • richardevans - Tuesday, January 03, 2012 - link

    I have two Roku SMP's. All you have to do is scroll down the page to where it states something like skip this step and away you go. It's small (intentionally) but it is there. Or you can call customer service and they will set up an account for you without a credit card. I've never had a problem setting up my boxes and my new Roku 2 XS is my third Roku. It's a great player that in simple terms 'just works.' I tried out the new WDTV and the latest Sony just recently and they both failed that test. The WDTV had too many issues to list and the Sony wouldn't remember my network from day to day. The Roku has an open SDK so many developers are working on it. Bugs get fixed in short order nad new channels are added. Don't let the CC issue deter you from a great streaming media player. Reply

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