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Torch Object Storage

Task processing

Video transcoding

Video transcoding allows you to process video files stored in TOS by converting their format, codec, resolution, bitrate, and other parameters. The feature produces output files based on specific templates, which makes it easier to adapt playback, reduce file size, and distribute files across multiple devices.

Billing notes

Video transcoding is currently free. We will announce in advance if it becomes a paid feature. To avoid unexpected costs due to changes in billing rules, please stay tuned to our announcements.

Prerequisites

Before you begin, make sure that you have completed the following:

Item	Description
Cross-service authorization	You have authorized TOS to access the files in the bucket so that it can read the source video and write the transcoded one.
KMS authorization	If the source or transcoded video file involves server-side encryption, you have authorized TOS to access Key Management Service (KMS). This enables TOS to read, process, or write encrypted files.
Source video file	The video file to be transcoded has been uploaded to the bucket and is in MP4, TS, or HLS format.
Save path	You have chosen a save path for the transcoded video file in order to prevent overwriting existing files or writing to the wrong directory.

Steps

In the left navigation pane, click Buckets.

In the top menu bar, select the project of the bucket you want to manage.

On the Buckets page, click the name of the bucket.

In the left navigation pane, select Data processing > task processing.

On the task processing page, click Create task on the Video transcoding tab.

In the Create video transcoding task dialog box, configure the following parameters.

Parameter	Required	Description
Source file path	Yes	Select the source video file to be transcoded.
Target bucket	Yes	Select the bucket where you want to save the transcoded video file.
Target file path	No	Enter the path where you want to store the transcoded video file. If this field is left empty, the file will be saved to the root directory of the bucket by default.
Target file name	Yes	Enter the name of the output file after transcoding.
Transcoding template type	Yes	Select the template type for the transcoding task. The options include System default template and Custom template.
Transcoding template	Yes	Select a transcoding template. This template defines the output parameters, including the video codec, resolution, and bitrate. For more information about system templates, see Video transcoding operator. Custom templates must be created before they can be selected. See Creating custom templates for instructions.

Once you have finished configuring, click OK.

Managing video transcoding tasks

The Video transcoding tab on the task processing page shows you the list of created tasks and lets you perform operations on them.

Operation	Steps
View task details	Click the ID of the task you want to check. This will take you to the details page, where you can find the Basic information, Enter information, and Output information.
Search for a task	At the top of the task list, select a time range to filter tasks or search for a task using its ID.

Last updated: 2026.09.04 10:42:49