tencent cloud

Overview

Data workflow is a new data processing service launched by COS. It offers two features: workflow and task.

• Workflow: With the workflow feature, you can quickly and flexibly create data processing processes as needed. A workflow is bound to a path of an input bucket. When a file is uploaded to the path, the workflow will be automatically triggered to perform the specified processing operation, with the processing result automatically saved to the specified path of the output bucket.
• Task: For files in a bucket, you can create tasks to perform data processing operations.
• Template: When using data workflows, you usually need to set a series of parameters, which can be combined through a template. This simplifies your operations and allows you to reuse the configured parameters with no need to enter them repeatedly.

  Note：

  For audio/video transcoding, audio/video splicing, video frame capturing, and animated image generation, you need to specify a template when creating a task or workflow, which can be either a preset or custom one.

• Queue and callback: When you activate the data workflow service, the system will automatically create a user queue for you. When you submit a task, the task will be arranged in the queue first and executed in sequence according to the priority and order of submission. You can also set a callback rule to stay up to date with the task or workflow progress, and the system will send the processing result and status information to the specified address.

The processing operations currently supported by data workflow include:

Use Cases

Multi-device adaptability

As content platforms are generally intended for multiple types of devices, they need to provide media files in different formats for different users. The audio/video transcoding feature covers most transcoding needs and provides diversified compression capabilities to increase the compression efficiency and downsize files. This reduces lags, storage space usage, and traffic fees.

Video platform

For traditional video platforms, reviewers need to watch videos and then manually select thumbnails, which is labor consuming and slows down video release.

The intelligent thumbnail generation feature can quickly select the most striking frames as thumbnails, which saves labor resources and accelerates video release.

The animated image generation feature allows you to select the highlights in a video to convert them into an animated image for video preview, so that users can get a glimpse of the video without playing it back. Compared with traditional static video thumbnails, animated image thumbnails increase the click rate and video playbacks.

Video subtitles generation

A list of words and corresponding timestamps can be generated for audio files, which makes it easier to subtitle corresponding videos.

Meeting recording transcription

The minutes of large meetings are complex. If a meeting is lengthy and attended by many people, it would be more difficult to keep the complete minutes. The speech recognition feature of COS can recognize Mandarin, English, and Cantonese, which reduces the workload of taking meeting minutes and improves the meeting effect.

Online education

The file preview feature enables viewing various types of files such as courseware and handouts in online education, which delivers an easier user experience.

Website transcoding

The display of file content at websites is subject to browser rules. The file preview feature of COS allows generating images from multiple types of files for preview. This addresses the display problems of file content on webpages.

Directions

Through COS console

You can use the data workflow service in the COS console. For more information, see the documentation for workflow and task configuration.

Through RESTful APIs

You can use APIs to manage workflows and tasks. For more information, see the data workflow API documentation.