Cloudinary Blog

Video Manipulations and Delivery for Angular Video Apps

Video Manipulations and Delivery for Angular Video Apps

On social media, videos posted by users constitute a significant amount of the content appeal on those platforms. From upload to manipulation to delivery, a smooth, efficient, and effective pipeline for the posting process is mandatory to ensure consistent user sessions and their steadily increasing volume. However, building such an infrastructure is a complex, labor-intensive, and problem-prone undertaking.

Enter Cloudinary, whose capabilities impressively form such an infrastructure. This article shows you how to manipulate, transform, and deliver videos in Angular apps with Cloudinary’s robust drop-in components.


Sign up for Cloudinary free today!


Installing the Angular SDK

To manipulate and transform videos while on Cloudinary, leverage the parameters in its Angular video component.

First, install the Cloudinary SDK for your Angular version. Type this NPM command:

Copy to clipboard
npm install cloudinary-core @cloudinary/angular-5.x --save

Afterwards, import from the SDK the <cl-video> component, which places in your app an HTML 5 video player. That player plays videos—whether in webm, ogv, or mp4 format—without a glitch on all major web browsers.

Note
AngularJS 1.x developers: You can obtain the <cl-video> component by typing this Bower command line:

Copy to clipboard
bower install cloudinary_ng#1.x --save

You can now transform and manipulate videos with no need for a dedicated server. Read on for the specific tasks and their related procedures.

Transcoding Video Formats

The format parameter takes one of these three values: webm, ogv, and mp4.

For example, to transcode the existing format of an Angular video called cat to the webm format, code as follows:

Copy to clipboard
<cl-video public-id="cat" format="webm">

</cl-video>

Concatenating Angular Videos

To concatenate multiple Angular videos by overlaying one on top of another, specify the related values for the overlay parameter for the <cl-video> and <cl-transformation> components. For example:

Copy to clipboard
<cl-video public-id="footballer" >
  <cl-transformation width="400" height="250" crop="fill">
  </cl-transformation>
  <cl-transformation overlay="video:ball" flags="splice" width="300" height="200" crop="fill">
  </cl-transformation>
</cl-video>

Adjusting Video Quality

The quality parameter takes any value between 0 and 100. The lower the value, the smaller the video size. By specifying a value for quality, you set the level of quality you desire for the video size at delivery.

For example:

Copy to clipboard
<cl-video public-id="drink" >
  <cl-transformation quality="60">
  </cl-transformation>
</cl-video>

Controlling the Playback Speed

While playing videos, users often accelerate or reduce the playback speed to accommodate various scenarios. For example, to watch as many course videos offered by a time-limited subscription as possible, a user might choose to skim through some of them.

To enable control of playback speed, specify a value of between -50 and 100 for the accelerate attribute in the effect parameter.

Note
That value applies to both acceleration and deceleration. For example:

Copy to clipboard
<cl-video public-id="dog" >
  <cl-transformation width="300" effect="accelerate:100" crop="scale">
  </cl-transformation>
</cl-video>

Generating Video Previews With AI

AI automatically identifies the appealing excerpts of a video and generates a preview version of the duration that you specify. Code as follows:

Copy to clipboard
<cl-video public-id="afcon" >
  <cl-transformation effect="preview:duration_10">
  </cl-transformation>
</cl-video>

The value 10 above denotes 10 minutes. You can specify any value between [?] and [?].

Note
This feature, currently in Beta, truly rocks! Do take a spin with it. You’ll be awed.

Adding Captions and Subtitles

To add a caption to a video, specify the caption’s font type, font size, wording, and such for the text attribute in the overlay parameter. Here is a self-explanatory code example:

Copy to clipboard
<cl-video public-id="dog" >
  <cl-transformation overlay="text:arial_60:Angular%20Video" gravity="south" y="80" start-offset="2" end-offset="5">
  </cl-transformation>
</cl-video>

As soon as that video called dog starts playing, its text caption, Angular Video, is displayed.

To add subtitles to a video as an overlay, specify in the overlay parameter the font type and size that you desire along with the name of the related SRT file. For example:

Copy to clipboard
<cl-video public-id="cat" >
  <cl-transformation overlay="subtitles:arial_20:sample_sub_en.srt">
  </cl-transformation>
</cl-video>

Reminder: Be sure to upload the SRT.srt file to Cloudinary first.

For other transformations you can apply to Angular videos, see the related documentation.

Browsing Other References

The following Cloudinary documentation contains many nuances that are worth a look:


Further Reading on Video Manipulation

Recent Blog Posts

New for DAM: Media Library Extension for Chrome

By Sharon Yelenik
A New Media Library Chrome Extension for Cloudinary DAM

With the introduction of the Media Library Extension, a Chrome-browser add-on that streamlines the access to, search for, and management of images and videos, Cloudinary offers yet another effective tool for its Digital Asset Management (DAM) solution. Let’s have a look at how most teams are currently working with media assets and how the new add-on not only boosts efficiency, but also renders the process a pleasure to work with.

Read more
New Features Supercharge Cloudinary’s Digital Asset Management Solution.

Today, I’m thrilled to announce the launch of Apps for Digital Asset Management and a Media Library Extension for the Chrome browser, which enables easy, flexible integration with all web-based applications in addition to making asset discovery more robust and accessible to all.

Read more
Scale and Automate Workflows With Modern Digital Asset Management Systems

With building, growing, and maintaining a strong digital presence being a top priority for all brands, high-quality visual content is paramount. In fact, consumers are 40 times more likely to share visual content on social networks than on other forums. Plus, a recent study from Wyzowl found that 84% of consumers made purchase decisions after watching a video, which explains why many brands are adding more and more visual media to their sites.

Read more
Speed Up Your Website With No Code Through Cloudinary’s Media Optimizer

As website and mobile apps rely more on visual media to create engaging user experiences, delivering strong web and app performance becomes more challenging for developers. The faster your site, the more time visitors would spend on it. Conversely, the slower the site, the higher the bounce rate, and the lower Google ranks it in SEO.

Read more
Bizzabo Holds Virtual and Simulive Events and Delivers VOD

While facing the pandemic-induced setbacks to its live-events business in the past two years, our customer and event innovator Bizzabo decided to reshape its offering into a digital-first Event Experience OS that fosters human connections and generates excitement. Toward that end, Bizzabo turned to Cloudinary for support of high-performance, visual events for large audiences to replace or augment live shows.

Read more