Save your FREE seat for Streaming Media Connect this August. Register Now!

Pros and Cons of Shot-Based Encoding

Learn more about per-title encoding at Streaming Media's next event.

Watch Jan Ozer's complete presentation from Streaming Media East 2019, T103. A Survey of Per-Title Encoding Technologies, in the Streaming Media Conference Video Portal.

Read the complete transcript of this clip:

Jan Ozer: If you have one easy-to-compress segment, you have a very low bitrate. If the next one is a high motion segment, you can up the bitrate. The viewer is not going to notice any difference in the encoding because it happens at a scene change. Whereas if you--we've all seen a keyframe in the middle of a scene where that was noticeable because either it was a higher-quality frame or the encoding was different--that's something you eliminate with the shot-based encoding.

Netflix's point is that they don't have to use CBR or VBR, they can use QP-based encoding if they want to within a segment because it's just not that important. Okay, so Netflix's statistic, they call this dynamic optimization, and they found significant bitrate reductions. They're saying they're saving 17% bitrate and increasing the VMAF score by 3.7 points. 3.7 points is very significant, particularly in the context of a 17% data rate reduction.

And it's not codec-dependent. We're seeing bandwidth savings here for H.264, VP9, and HEVC, and they're all quite significant, whether you measure them with VMAF or whether you measure them with PSNR. And again, this is a situation where traditional bitrate techniques don't apply. If this makes you nervous, shot-based encoding may not be for you. If you're okay with this, then it's a pretty good technology.

The other issue is, I'm not aware of any third-party vendors offering shot-based technology at this point, so if you want it you're gonna have to make it yourself.

Streaming Covers
for qualified subscribers
Subscribe Now Current Issue Past Issues
Related Articles

Hardware-Based Transcoding Solutions Roundup: Testing Performance

We put hardware-based solutions from NVIDIA, Intel, and NGCodec to the test to see which offers the strongest performance and the highest quality.

Video: How Per-Title Encoding Works

Streaming Learning Center Principal Jan Ozer explains per-title encoding and rates the different per-title encoding technologies in this clip from his presentation at Streaming Media East 2019.

NAB 2019: NPAW Talks Analytics and Quality of Engagement

At NAB, NPAW showed off its new smart ads service, which not only measures whether or not an ad is delivered but looks at its streaming quality and how it impacts overall viewer engagement.

Buyers' Guide to Per-Title Encoding

Per-title encoding is now a required feature on most encoding platforms. Here's an overview of the features to look for, and how to get the most out of them

Video: How Has Per-Title Encoding Evolved from 1.0 to 2.0?

SSIMWAVE Chief Science Officer Zhou Wang identifies the key evolutionary points in the development of per-title encoding to greater efficiency in this clip from his presentation at Streaming Media East.

Video: How Does Per-Title Optimization Improve the Streams You Deliver?

SSIMWAVE Chief Science Officer introduces the key benefits of per-title encoding optimization in this clip from his presentation at Streaming Media East.

Buyers' Guide to Per-Title Encoding 2018

If you're not already using per-title encoding, it's time. Here's a guide to choosing the tool that's best for you.

One Title at a Time: Comparing Per-Title Video Encoding Options

Save on bandwidth and keep costs down: Per-title video encoding solutions let publishers break free from fixed encoding ladders. Explore the benefits of four methods.