youtube-eng.blogspot

Using WebM to power the YouTube app for Nintendo Wii

Thursday, November 15, 2012

When we began building the new YouTube app for Nintendo Wii, we wanted to make video playback smooth and beautiful. This meant squeezing the most available power from the console CPU and fitting the video decoding process within the tight bounds of available memory. After trying out several video encoding formats on Wii, we found that 360p WebM encoding performed the best. With the largest install base of current generation consoles, YouTube on Wii is the largest deployment of WebM video in the world today.

WebM is particularly well-suited to devices where available memory is limited, because of its technical approach to video encoding. VP8, the video codec in WebM, uses reference frames (called alternative reference frames, or "alt-ref") from which adjacent video frames are derived and compressed. This type of compression is commonly used in modern video encoding schemes, but VP8 uses the technique with particular efficiency, which results in a smaller memory footprint and smoother video playback on Wii.

We went one step further and performed low-level optimization of the VP8 decoder specifically tuned to the Wii’s processor. This included: using paired-single floating point operations to perform motion compensation, loop filtering, and idct; using the GPU to do color conversion and scaling; and dcbz instructions to copy buffers. This kind of optimization is available to anyone, as the VP8 code is open source under a BSD license.

We’ll keep looking into other ways we can use WebM, so stay tuned on this blog to learn more.

Fritz Koenig, Engineer, recently watched Phantogram - "Don't Move", and Matt Darby, Product Manager, recently watched “JP Auclair Street Segment.”

Upcoming HTTPS Certificate Change

Tuesday, November 13, 2012

If you’re a developer who uses the YouTube API, and if you make your requests to the API using HTTPS, there’s an upcoming change that you should be aware of. Sometime in early August 2013, Google will be changing the certificates used for establishing secure HTTPS connections to all of our servers, in what we anticipate will be a backwards-compatible manner. Still, since there are so many slight differences in HTTPS client implementations, we encourage you to test your existing code in advance of this change and to report any issues that you do encounter.
The new certificates are currently active on https://cert-test.sandbox.google.com/, and we recommend testing your HTTPS client implementation against that URL.
If you’re using HTTP instead of HTTPS to access the YouTube Data API then you also won’t be affected by the new security certificates—but you really should start using HTTPS!
This post on the Google Online Security Blog has more information about the upcoming change, which roll out in early August, 2013.
Cheers,—Jeff Posnick, YouTube API Team

Cool YouTube apps from Google I/O 2012

Friday, September 28, 2012

We're constantly amazed at the innovative ways that developers incorporate YouTube into their applications. At Google I/O this year, 12 partners (over 30% from outside the U.S.) demonstrated their apps in the YouTube section of the Developer Sandbox, a demo area highlighting applications based on technologies and products featured at I/O.Google's own Daniel Sieberg, an Emmy-nominated journalist, interviewed some of our partners about their use of the YouTube APIs.With Daniel’s hectic schedule, he only had time to interview a handful of our great partners. With that in mind, we highlighted all the awesome apps showcased by our partners at the YouTube API Developer Sandbox.Business.me (YouTube Data API and YouTube Player API)

Overview	Business.me, headquartered in Singapore, is the place to share and discover videos about business. They have created a video-sharing site to help producers of business videos reach their audience. The site also helps business professionals discover relevant business information in video format.
Fun Fact	Oscar Moreno, CEO, not only holds Business and Law degrees, he helped launch several startups (Business.me, Netjuice, Keldoo, and Tuenti).

Code Hero (YouTube Data API)

Overview	Code Hero teaches you to code through a fun, 3D game. Become a code hero and shape the future!
Fun Fact	The Code Hero Team implemented the recording mechanism in the game that exports to YouTube at a 3 day hackathon! Bonus: The game has sharks with lasers attached to their heads!

Flipboard (YouTube Data API and YouTube Player API)

Overview	See everything on Flipboard, all your news and life’s great moments in one place. Using the YouTube Data API, Flipboard lets users discover, rate, share, and comment on top videos from YouTube. In addition, users can access their own videos and subscriptions, and subscribe to other YouTube users.
Fun Fact	Flipboard launched an Android app one week before I/O with a YouTube and Google+ integration!

LOOT Entertainment by Sony DADC (YouTube Data API)

Overview	Gather your friends and set up your own production crew inside PlayStation®Home! What will you be? Director? Actor? Cinematographer? Extra? Try them all! Check out the amazing Machinima tools to help you record, light and build your film or television sets! What will you make?
Fun Fact	LOOT gives you tons of sets to make your own movies (machinima) on the PS3, including a Ghostbusters Firehouse Stage Set!

Moviecom.tv (YouTube Data API and YouTube Player API)

Overview	A simple and easy online video platform for businesses. Record, centralize and share instantly. Moviecom.tv also allows you to link directly to your YouTube account through the YouTube APIs.
Fun Fact	The founders flew all the way from Glasgow to attend Google I/O!

Parrot (YouTube Data API and YouTube Player API)

Overview	The Parrot AR.Drone is a quadricopter that can be controlled by a smartphone or tablet. Get more out of your AR.Drone with the AR.Drone Academy. Keep track of all your flights on the Academy map. Watch your best videos with added statistical feedback and directly share online with pilots from all over the world!
Fun Fact	Parrot makes remote controlled flying devices that can record and track their flights!

PicoTube - Vettl, Inc. (YouTube Data API and YouTube Player API)

Overview	Picotube uses content from YouTube and allows users to create avatars, watch clips together, create playlists, and rate videos selected by other video jockeys.
Fun Fact	Picotube was the Grand Prix winner of TechCrunch Tokyo 2011!

Skimble (YouTube Data API and YouTube Player API, and new Android Player API)

Overview	Here to power the mobile fitness movement, Skimble offers fun, dynamic and social applications for everyone. Available now are Skimble's Workout Trainer and GPS Sports Tracker apps that help motivate people to get and stay active. Skimble uses the YouTube Player API to display fitness videos.
Fun Fact	Co-founder Maria Ly got the crowd moving at one of YouTube’s Google I/O Sessions!

Squrl (YouTube Data API and YouTube Player API)

Overview	Squrl is a great place to watch and discover video. Know what videos are trending, receive recommendations on what to watch and see what your friends are watching.
Fun Fact	Co-founders Mark Gray and Michael Hoydich also founded the successful software development company IndustryNext together in 2004!

Telestream (YouTube Data API and YouTube Player API)

Overview	Telestream demonstrated Wirecast for YouTube, a live video production and streaming product, which was developed specifically for Google YouTube partners. Telestream specializes in products that make it possible to get video content to any audience regardless of how the content is created, distributed or viewed (entire process).
Fun Fact	Telestream’s NASCAR Project won the IBC2012 Innovation Award!

Vidcaster (YouTube Data API and YouTube Player API)

Overview	VidCaster is a video site creation platform that allows you to create a video portal instantly from your existing video library on YouTube or other video hosts. Choose from a beautiful set of designer themes and customize to your heart's content using VidCaster's powerful template language.
Fun Fact	Kieran Farr, CEO and co-founder, used to drive a taxi full-time in San Francisco before becoming a successful entrepreneur!

WeVideo (YouTube Data API)

Overview	WeVideo is a cloud-based video editing suite that allows easy, full-featured, collaborative HD video editing across Google Drive, Chromebooks, and Android devices.
Fun Fact	WeVideo partnered with Marvel and YouTube to allow fans to create their own trailers!

YouTube Channels: Get with the Program!

Monday, September 24, 2012

It's never been easier to create compelling videos and build a social presence on YouTube. At this year's Google I/O, YouTube product managers and channel gurus Dror and A.J. presented tips and tricks for making great content centered around raising brand awareness, raising money, and obtaining feedback about your products and services.

Don't worry if you missed their talk, we recorded it! So, sit back, grab some popcorn, and get ready to learn how to showcase your brand in front of YouTube's 800 million unique visitors per month!

Click here to view the slides from the video above.

Not sold yet? Well, have a sneak peek at some of the great material they cover below, and remember Dror and A.J.’s number one recommendation: make content, not commercials!

Sneak Peek

Tips and Tricks

Hook the user in the first 15 seconds (or they'll leave)
Brand your channel!
Make the most of your budget

Review YouTube’s Trends for ideas
Camera shy? Consider animation. (It might actually be cheaper than video.)
Several successful channels focus on curating videos from their community
Enhance your videos without fancy software/hardware using the YouTube Editor or other integrated web editors

Many, many more...

What's your goal?

Raising awareness

Master your PR via video (include all your features and make bloggers’ lives easier)
Provide product/service demo videos to promote your company
Tell backstories about clients using your products/services

Raising money

Add video to your crowdfunding pitch to increase funds raised by 114% (source: Indiegogo)

Researching and supporting users

Record tutorials to promote and educate (see which features are the most popular using YouTube’s Analytics... you might be surprised)
Use Google Hangouts for scalable office hours and virtual focus groups
Figure out what features customers like/dislike via the world’s largest focus group

Resources to learn more

Creator Hub
Creator Playbook (what you wish you knew about YouTube)
Trends Dashboard
YouTube for Developers (that’s us)

Wow, you made it this far without watching the video? Did we tell you they fill the presentation with awesome videos that showcase their points (including Chuck Testa)? Nope!? Well, now you know, and you will definitely want to watch the whole thing!

-Jeremy Walker, YouTube API Team

The YouTube API on Stack Overflow

Friday, September 14, 2012

Many of you are already familiar with the terrific Stack Overflow website, which has become the de facto resource on the web for all types of programming questions. And many of you have been asking YouTube API questions on Stack Overflow for some time now, but haven’t received any official responses from the YouTube API Developer Relations team. That’s because, for the past five years or so, our focus has been on providing developer support via our dedicated Google Group. We’ve decided that instead of continuing to maintain a dedicated Google Group for YouTube API questions, it would help more users if we focused on responding to Stack Overflow posts.

We encourage all developers who have questions about the YouTube API to start posting on Stack Overflow today using the tag youtube-api. You can use this new question template to pre-populate the tag for you so that you don’t forget. While we’ll do our best to find and answer relevant questions that aren’t tagged with youtube-api, you’d be making our job easier (and you’d get a quicker answer) if you tag things correctly from the get-go.
Here are a few tips for folks new to Stack Overflow:

Before posting, search to make sure your question hasn't been asked before. To do this, put [youtube-api] as the first part of your search, then type in some keywords that describe your problem or question.

If you need to ask a question, make sure you apply the youtube-api tag, as well as the tag that indicates the language that you're using. If you're using PHP to access the API, your question should be tagged youtube-api as well as php.

Make sure you watch your question after posting it, as experts that can provide you with an answer might leave comments to ask you for clarification.

Stack Overflow prides itself in being a destination for questions and answers, and not a place to file bug reports or feature requests. We ask that developers do not post on Stack Overflow for those sorts of things, and instead make use of the templates we have for filing a bug or filing a feature request in our existing public issue tracker. (Be sure to check the list of existing open issues before filing a duplicate.)

On October 15, we’ll be switching the existing discussion Google Group into archive-only mode, meaning that it will no longer accept any new posts. You don’t have to wait until October 15 to start asking questions on Stack Overflow or to file reports in the issue tracker, though.

For those developers who mainly “lurked” in the discussion Google Group and used it as a way of getting official announcements about the YouTube API, we have a number of other communication channels to recommend. Subscribing to this blog’s RSS feed is a great idea, for instance. You can also follow us on Google+ at http://google.com/+YouTubeDev. If you’d like to submit a question to one of our weekly YouTube Developers Live broadcasts, you can do that for the next upcoming scheduled show. Finally, for those who prefer to get updates via email, we will be keeping the announce-only Google Group active, and we’ll continue to post important messages there.

Cheers,
—Jeff Posnick, YouTube API Team

Video Tags: Just for Uploaders

Tuesday, August 28, 2012

Update: This change also applies to <category scheme="http://gdata.youtube.com/schemas/2007/keywords.cat"> tags, which were not mentioned in the original announcement.
If you follow the YouTube Creator Blog, you might have recently seen a post announcing that video tags (also known as keywords) would no longer be displayed to viewers of a video on YouTube’s website. They aren’t going away from the video itself, though—the owner of the video can still create tags for new videos and edit tags for existing videos, and video tags will still provide an important signal used to surface relevant results when searching for videos.

We’re going to be making some corresponding changes to all versions of the YouTube Data API to mimic this behavior in API responses. Starting later today, August 28, on the staging server and September 4 on the production server, any time you get a video entry back from any API method, it will have an empty <media:keywords/> element. This is a valid response from the API that your application should already handle gracefully, since videos are not required to have any keywords to begin with.

The exception to this rule is when you make authenticated requests to the API, and you request a video entry that’s owned by the currently authorized user. In that scenario, you will get back a <media:keywords> element that contains the full list of tags for the video, and you can read, update, or remove those video tags using the standard API operations.

Important: If your application allows video owners to update the metadata of their videos, please ensure that you include the proper Authorization header for both read and write operations. Otherwise, you could accidentally return an empty list of video tags when retrieving an existing video, and end up overwriting the video’s tags if you update the metadata. Video tags continue to play an important role in helping viewers discover your videos when searching on YouTube.com or via the API, so if your application does support metadata editing, please make sure you allow owners to tag their videos properly.

Cheers,
—Jeffrey Posnick, YouTube API Team

PLaylists: now with more PL

Wednesday, August 22, 2012

If you ever pay attention to your browser’s location bar, you may have noticed that, for a while now, the YouTube.com website has used playlist IDs that are prefixed with the characters “PL” when constructing the URLs for playlist pages. http://www.youtube.com/playlist?list=PL72CF07D200AA2AFA is one example of that. This practice of prepended playlist IDs previously didn’t extend over to the Data API—PL72CF07D200AA2AFA would not have been recognized as a valid playlist ID, but 72CF07D200AA2AFA would have.

Starting later today, Wednesday, August 22, the YouTube Data API will accept playlist IDs with the “PL” prefix whenever they’re used as metadata or in API request URLs. In most responses, the API will return playlist IDs with “PL” prefixes. The one exception is that for the next few days, searching for playlists will return playlist ids without the “PL” prefix. This will change on Tuesday, August 28, at which point the “PL” prefix will be included in playlist search results as well.

While we will continue to support using unprefixed playlist IDs as metadata or in API request URLs for the time being, at some point in the future we may require the “PL” prefix to be used whenever a playlist ID is provided. We’ll provide additional guidance if we do decide to stop supporting requests with unprefixed playlist IDs.

This change should be backwards compatible, but if you’re currently manipulating or comparing the playlist IDs that are returned via the API in any way, or making any assumptions about the length of the ID (which you shouldn't be), please make sure that your code will handle IDs that contain the “PL” prefix.

If you have any questions about this changes, please let us know in our developer forum.

Cheers,
—Jeffrey Posnick, YouTube API Team

Engineering and Developers Blog