Save your seat for Streaming Media NYC this May. Register Now!

Video: Audio Analysis and Machine Learning for Video

Learn more about machine learning and AI at Streaming Media's next event.

Watch Jun Heider's complete presentation, VES103. Enhancing Media with Machine Learning in 2019, in the Streaming Media Conference Video Portal.

Read the complete transcript of this clip:

Jun Heider: In my opinion, this is one of the more mature areas of machine learning for video. These services are pretty accurate when it comes to speech-to-text, from what I've seen. Obviously they're not perfect. But I feel that they're more perfect in this regard than they are with object detection, especially when we're talking about videos in the wild.

Say I'm a machine learning service, for instance, maybe Video Indexer or Valossa. And I'm tuning my models and they're going to probably cover 80%. But there are going to be those videos that they're not expecting, and they haven't been properly tuned to. So what I would say now is speech-to-text and translation or speech-to-text iare actually pretty good so far.

Translation builds on top of that. In addition to being able to get a transcript, you can then take that transcript and translate it to other languages. Here's another really cool one. There are sounds in this world that aren't just speech. So we have, you know, bird sounds. We have applause, we have music. Things like that. Certain services can actually tell you what other audio is happening within the video as well. So that's really useful.

What you see on the left is Valossa and what their JSON looks like. I ran it through video, and it detected applause. In the Fauna category, it detected a pet sound, probably a dog bark or something.

Then there's Video Indexer from Azure Media Services. They have this really cool speaker statistics that they give you. Let's say you have some kind of like training system where you're teaching toastmasters, and you want them to be able to have a two-way conversation. You can leverage these statistics to know who's the one that's talking and not letting anyone else talk.

In this case, it's me, because I'm sitting up here talking to all of you and you're all quiet. But speakers' statistics are pretty interesting.

There's also sentiment analysis as well. Sentiment analysis is where you analyze how much happiness or sadness is in a video. Or how positive or negative is a particular point in the video. Valossa has a pretty cool visualizer within their UI where you can get some sentiment.

AMS Video Indexer does positive and negative, and I think they just recently started putting some emotions in there as well.

Watson Video Enrichment has been doing sentiment analysis for a while. So what you can see here in the bottom right is joy, sadness, anger, fear, and disgust.

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

What Is Machine Learning as a Service?

RealEyes Media CTO Jun Heider discusses MLaaS and how to leverage it in this clip from his Video Engineering Summit presentation at Streaming Media East 2019.

Video: How to Make MLaaS Work for You

Will MLaaS work for you? Depends on the kind of content you have, how you're using it, and the type of results you need, as RealEyes' Jun Heider explains in this clip from his Video Engineering Summit presentation at Streaming Media East 2019.

Video: What's the Difference Between Machine Learning and AI?

Microsoft's Andy Beach and IBM/Watson Media's Ethan Dreilinger break down the differences between machine learning and AI in this clip from their panel at Streaming Media West 2018.

Video: Key Considerations When Choosing a Video AI Platform

RealEyes Director of Technology Jun Heider discusses the importance of internal self-assessment and which use-case elements to consider when choosing a platform for video AI in this clip from Streaming Media East 2018.

Video: Tips for Getting Started with Video AI Platforms

RealEyes Director of Technology Jun Heider outlines the first steps in choosing an AI platform in this clip from his presentation at Streaming Media East 2018.