What Are Ad Impressions?

Part 3 of 5 from JW Player’s “Anatomy of a Video” Series

So far in our exploration of video fundamentals, we’ve examined embeds and plays. But there’s often a step in between that underlies the success of all AVOD (advertising video on-demand) publishers. Ad impressions are the engines that turn plays into profits. Measuring them correctly and using these insights in evaluating audience loyalty are critical if you want to monetize successfully.


An ad impression is measured when an ad is delivered in the first frame. If the ad was skipped before reaching the end, the impression still counts.

Ad impressions can occur before the start of a video (preroll), in the middle (midroll), or after the end (postroll). For the purposes of this blog, we’ll focus on the most common form—preroll.

If prerolls are done poorly, they are the first point of viewer drop-off after the embed. Perhaps the ad took too long to load, or the ad content didn’t grab people’s attention. Or, worse yet, the ad was requested but never filled by advertisers.



Luckily, these potential challenges have a silver lining—they provide insight into audience fatigue and loyalty. By tracking how your viewers are interacting (or not interacting) with ads, you can make important business decisions, such as how best to retain your customers.

For example, if you detect high levels of ad fatigue and want to prevent viewers from bouncing from your site, you might exercise a certain restraint. You might intentionally hold off on serving ads in the next instance—in the hopes that some users will return tomorrow.

Essentially, you are investing in the lifetime value of the customer. You’re saying: I choose not to give you this ad now, so you are more likely to come back later. Over time, this increased loyalty translates into more ad revenue.



At JW Player, we offer tools to help you make the most of your ad impressions. Our ad scheduler gives you full control over when to show your ads, and it takes factors into account like video length.

For instance, if your video is 10 minutes long, it could make sense to use a midroll, whereas a 2- to 3-minute video would be a better match for a preroll.

You can gain a more detailed breakdown of your ad impressions through our segmentation tool. The tool is a great way to deep dive into how your ads are doing, slicing out which assets, configurations, or pages are driving the most impressions.


To learn more about how to successfully monetize your videos, schedule time to talk with one of our video experts.

Contact Us


The “Anatomy of a Video” Series explores key measures of a video’s life cycle: embed, ad impression, play, complete, and time watched. Together, they provide a comprehensive picture of how and why viewers engage.

The post What Are Ad Impressions? appeared first on JW Player.

Starting Video Instantly after a Pre-roll Ad

Achieving a server-side ad insertion experience on the client-side with JW 8.1

One of the most lucrative and engaging placements for online video advertising is the pre-roll ad. This is the ad that comes before main content that a viewer is attempting to watch. When the ad completes or is skipped to the main content, it is imperative to start video as quickly as possible. If viewers are stuck waiting for the video to load, they will leave and likely not come back. The rate at which viewers abandon video increases the longer they have to wait. Studies show that most viewers are willing to wait 1-2 seconds for video to start. After that, you can expect a 6% drop-off for each additional second of wait time.

When it comes to transitioning smoothly from advertising to content, online video has always trailed behind broadcast TV. This is due to the nature of client-side ad insertion and programmatic video. Server-side ad insertion is a potential solution to achieve a seamless experience, but it has been two years since it was added to the VAST 4.0 specification. Overall adoption is slow and expensive because of the lack of standardization around the actual insertion and tracking. It also requires infrastructure changes that only premium media publishers can typically afford.

We launched JW8 to provide a broader base with a broadcast-quality online video experience. Using intelligence gleaned from our large network of video players, we learned how to get 75% of all of our video starts after an ad plays to be under two seconds. Our latest iteration of JW8 improves time to first frame by 100%. In JW 8.1, 75% of videos start up in under a second, with the vast majority of these plays starting close to instantaneously.

The result? An online video experience that’s as seamless as cable TV, even on slower mobile networks. Check out this video that shows the difference in performance when on a cellular network.

What’s next? We are going to extend this functionality and keep making those green bars bigger.

To learn more about how to become a video-first publisher, schedule time to talk with one of our video experts.

Contact Us

The post Starting Video Instantly after a Pre-roll Ad appeared first on JW Player.

Video Player Bidding: The Future of Video & Ad Tech

JW Player partners with SpotX to deliver a groundbreaking solution for online video advertising  

We’re thrilled to announce the launch of Video Player Bidding, a breakthrough header bidding solution for video with our exclusive partner SpotX, the leading video ad serving platform for publishers.

This special partnership marks the first time video advertising will be directly integrated into a player. Rather than inserting an ad script into the header of a page, publishers can simply flip a switch from a video platform to activate header bidding, no implementation required. In essence, you get the benefits of header bidding without the header.

By connecting JW Player publishers with Spot X’s vast ad server network, video player bidding overcomes the challenges inherent in header bidding—greatly improving monetization with maximum CPMs and ad fills. For publishers trying to achieve the unenviable task of merging video tech with ad tech, video player bidding brings together the best of both worlds.


Header bidding is the practice by which publishers can simultaneously garner bids for ad impressions from multiple demand sources before calling the ad server, resulting in more overall ad yield for publishers.

While in theory these programmatic exchanges should happen automatically, in practice the process is complicated and hard to implement, especially in a fragmented marketplace.

In addition, header bidding is a direct cause of page latency. Plugging in more SSP tags slows pages down significantly and increases the likelihood of viewers installing ad blockers.


Video player bidding offers a powerful solution to these challenges. By integrating directly into the web player, the ad decision is made server-side before a viewer hits play, vastly reducing latency.

Compared to header bidding, the process is much more streamlined. Publishers will have access to 65+ DSPs, driving demand and giving advertisers access to previously unavailable premium inventory. Publishers can also leverage valuable video metadata to increase the value of their inventory.


We couldn’t be more excited to join SpotX in bringing this innovation to the market. In an age when brand safety, trust, and transparency are of paramount importance in the digital ad world, we believe our one-of-a-kind solution will help both publishers and advertisers reach unprecedented success.

Video player bidding will be available beginning March 1, 2018. To learn more and to sign up for more information, go to www.jwplayer.com/video-player-bidding or watch this interview with JW Player Co-founder Brian Rifkin and SpotX Chief Revenue Officer Sean Buckley discussing the solution:



Ready to become a video-first publisher? Schedule time to talk with one of our video experts.

Contact Us

The post Video Player Bidding: The Future of Video & Ad Tech appeared first on JW Player.

Buffering, Be Gone

Smoothly transition video ads to content with background loading in JW 8.1

It’s a common problem in the world of digital video: After an ad plays, the video buffers. And buffers. (And buffers.) It can take so long that you stop watching.

When it comes to transitioning smoothly from advertising to content, online video has always trailed behind broadcast TV.

At JW Player, we tackle this issue head-on by reducing buffer times to 2-3 seconds on average. And with our new player JW 8.1, we’ve cut that time down even more. JW 8.1 loads video while prerolls and midrolls play, so there’s virtually no buffering—and content continues instantly after these ads. The result? An online video experience that’s as seamless as cable TV.

Background loading has reduced time to first frame (TTFF) to just milliseconds. Comparing JW7 with JW8, we’ve seen immediate success:

  • 3x faster median TTFF across the board
  • Up to 65% more players with nearly instant TTFF of under 100ms
  • Up to 3x faster TTFF with preload auto instead of preload metadata (default)

One of the most common reasons for viewer drop-off is buffering before playback. Keep eyeballs on the video with smarter preloads and sub-second load times in JW 8.1.

To learn more about how to become a video-first publisher, schedule time to talk with one of our video experts.


Contact Us

The post Buffering, Be Gone appeared first on JW Player.

Browser-Level Autoplay Restrictions: The Advertising Impact

As desktop browsers place restrictions on autoplay, publishers have more reason than ever to embrace click-to-play advertising

With changes in the industry over the last year and a half around supporting autoplay for mobile (when muted) and the more recent newsworthy restrictions implemented by Safari 11 and soon Chrome 66, there are some clear pieces of information and actions necessary for anyone in the digital video world.


Click-to-play is king

As we’ve said many times before, click-to-play is the future of the online video world. Not only does it help with monetization, but web browsers are making autoplay harder as a way to improve the user experience of viewers across the web. Embracing click-to-play is the clear path forward.


Desktop, meet Mobile

Mobile devices only allow autoplay when the content or ad is muted. Desktop is now joining the party in an effort to improve user experience and save bandwidth for viewers. Fortunately, this unifies the behaviors, simplifying things and making it easier to remember what the behavior will be.


Safari 11 desktop

Safari 11 brought autoplay restrictions with it.


The new default (which is configurable by the viewer) is to only allow autoplay if the content or ad is muted. This is set on a page by page basis, and viewers can choose to always allow autoplay, or never allow autoplay for that page.


Chrome 66* desktop

Chrome will implement similar restrictions as Safari that you can read more about here.

* While the Chrome version number and date have been shuffled around a bit, the current timeline from Google puts these changes around mid-April 2018.


Safari 11 came with a fair amount of buzz even with it only being 5% of traffic; surely Chrome’s 45% is nothing to ignore.


Why do desktop autoplay restrictions matter?

When desktop browsers restrict autoplay, ads will start immediately and then get paused, requiring users to click on them to continue OR the ad will error out and then require the user to click to start the content:


This change is a departure from autoplay ads, which allow ad requests and ad impressions to happen automatically, eating up bandwidth and inflating numbers for what may not be a real, watched ad. More importantly, user experience is poor.


While autoplay ads pump up impressions, they often aren’t the most effective. A click-to-play ad (in an autoplay-restricted browser) supports intent to watch and, in the long run, reaches audiences much better.


So long story short: These desktop autoplay restrictions might seem daunting. But they’re actually a significant step toward creating online videos that place user experience first and make ads more successful.  


How will JW Player handle the change?

Given how poor the user experience is in autoplay, the player needs to detect the browser setting and react accordingly, prior to starting playback. To do this, the player will have to test to see which scenario is allowed:

  1. If the publisher wants to autoplay, and we detect we can autoplay, we will
  2. If we detect we can’t autoplay, but can autoplay muted, we’ll check to see whether the publisher has confirmed they want to run ads muted, and we’ll mute the player to let it run
  3. If we can’t autoplay at all, the player will disregard the autoplay setting and remain in a click-to-play state


There are some pretty serious advertising implications, not the least of which is that advertisers may not be keen to have their ads run muted, and that plays and impressions will likely drop for many sites. But as mentioned above, the quality of those impressions will likely be improved with click-to-play.


Google IMA

Aside from the functionality above, Google has a requirement that entails passing autoplay and mute settings along with ad requests so that advertisers have more transparency around what the player functionality will be when their ad would run. This allows advertisers to decide whether they want to run ads on autoplay players, muted players, etc.


So what do I need to do?

JW Player will be releasing a new version of the player that fixes the user experience and passes the appropriate information to Google. If you’re on the latest version of JW8, you’ll get the update.


If you’re not on the latest version of the player, you’ll need to update. This isn’t a bad thing as you’ll get loads of new functionality and better performance as you can see in some of our other posts, like this one about the benefits of JW8.


What happens if I don’t do anything?

If you’re not on the latest version of the player, a few key things will happen as the browser changes proliferate:

  1. The user experience on your pages will remain poor, driving viewers away
  2. Advertisers may opt out of bidding on your ad inventory, resulting in a lower fill rate, or bid less, resulting in a lower CPM
  3. You may simply get ad errors rather than impressions


Much like the Flashpocalypse, this is an unavoidable industry movement for the better. With such advance notice, the Flashpocalypse passed quietly into the night and is now a distant memory. Take this opportunity to get on the latest and greatest version of JW Player and ensure you get out in front of these important upcoming changes.


You can read more about autostarting and some of these issues in more detail in our support article.


Ready to become a video-first publisher? Schedule time to talk with one of our video experts.


Contact Us

The post Browser-Level Autoplay Restrictions: The Advertising Impact appeared first on JW Player.