2015年11月17日
By 蒂姆Siglin 特约编辑
专题文章

流媒体西部 '15: Xbox Live Behind the Scenes

At 流媒体西部今天, opening keynote speaker Corey Smith took attendees behind the scenes of the Xbox Live Events interactive (XLEi) platform, which Microsoft uses to deliver large-scale live events, 比如最近的Xbox One发布会. 那件事到底有多大?

“20亿次边缘点击,史密斯说。, senior service engineering manager for the broadcast solutions team with Xbox Live at Microsoft. Smith said that the origin stream count rose to 44 on a 1 gigabit pipe, noting that the the origin streams were "redlining around 980 megabits per second." Smith said the CDN caused a bit of concern when the overall simultaneous delivery passed 3.每秒2太比特.

Smith broke down the delivery solutions, for both live and on-demand content, on the XLEi platform.

在现场现场, Smith said that the company uses an 11Mbps profile, 重新包装为三个分段, 自适应比特率格式:HSS, HLS, 和MPEG-DASH.

“我们现在看到了很多MPEG-DASH技术,史密斯说。, adding that MPEG-DASH can play back on the newest Xbox console.

Smith also said the live platform allows for advertising stitching (stream stitching) as well as two-way interactive engagement and dynamic user playlist manipulation. He also said that, as of 今天, there's not much real demand for 4K.

"There’s a lot of talk about UHD and 4K, but I think we’re still years out,史密斯说。. "There’s not a lot of content being generated in the field right now. I have a theory that HDR 1080p60 will have a faster uptake in the market."

In terms of scale of potential viewers, Smith says that more than 4 million clients are deployed on Xbox One, with more than 10 million clients deployed on Xbox 360.

“Millions of others also watch via our web broadcast client,史密斯说。.

除了, the platform features language localization, 线性和按需调度, 多声道音频, 包括杜比数码. Smith stressed that both the Xbox Live Experience and the OTT linear services are FCC compliant with noise reduction and close-captioning.

"Xbox One is now driven with the power of Windows 10,史密斯说。, demonstrating at one point how he could see the same streaming experience on a Windows 10 device as well as an Xbox console.

在视频点播方面, Smith said there was a 61% increase in media processing fulfillment requests over the past fiscal year. 增长并没有减弱, and Smith said that in the first 90 days of fiscal year 2016, there’s been a 25% increase of in deliverable encoding requests.

Smith also described the growth in another way, noting that 今天’s video-on-demand platform delivers nearly twice as many assets on a monthly basis compared to fiscal year 2014, with process cue times expected to show 100% improvement in the near term.

Smith also highlighted other on-demand platform features.

“在微软的生态系统中, there's a lot of excitement around this feature,史密斯说。, referring to the attempt to do branching narrative experiences, similar to Blu-ray discs that contain that capability.

当涉及到网页浏览, which Smith had previously noted was in the millions, 体验必须是相同的.

"We don’t want to miss the monetization experience with those users,史密斯说。, referring to those who choose a web experience rather than a console experience. Smith’s slides note that the experience for web users and console users should be the same “soon”.

最后, Smith used an example of the power of e-commerce on both the Xbox and the web, as it relates to interactive advertising offers.

His example was a show called Show X, with actual data around the number of unique viewers. Show X拥有66个独特的用户群,728观众, 据史密斯说, 超过35个,000 clicked on an overlay click for an interactive offer. Smith noted that more than 50% of viewers clicked on some version of interactive offer for Show X.

Smith finished by doing a live demo of his own keynote, showing a local Xbox playing back content that was delivered via a 紫溪-enabled box that is then fed into an encoder in Redmond and played back locally in Huntington Beach within the console.

"Services can no longer survive on a single platform,史密斯说。. "We have to be inclusive not only to our own platforms but to platforms of anyone we want to get our message to."

Scroll down to watch the full keynote address.