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Video on Demand
Just-in-Time Transcoding
最終更新日:2024-05-07 19:06:43
Just-in-Time Transcoding
最終更新日: 2024-05-07 19:06:43
Traditional transcoding technology requires decoding and encoding the entire audio and video before playback, which operates in an asynchronous processing mode, leading to longer waiting times for users. However, Just-in-time transcoding technology allows for immediate playback without waiting, regardless of the video's length, achieving a seamless start within seconds and providing users with an entirely new playback experience.
Note:
If you need to use the Just-in-time transcoding feature, please contact sales to apply for activation.

Just-in-Time Transcoding Template

The JIT transcoding template includes parameters such as resolution and bitrate. VOD uses a JIT transcoding template to represent a set of transcoding parameters. Through the template, you can specify the following transcoding-related parameters.
Item
Parameter
Description
Video transcoding
Resolution
Supported width range:128px - 1920px
Supported height range:128px - 1920px
Bitrate
Supported video bitrate range:128kbps - 10000kbps
Watermark
Watermark image
the base64 of watermark image
Watermark position
the position of watermark
Watermark resolution
the resolution of watermark
For common usage scenarios, VOD provides the following preset JIT transcoding templates.
Template name
Video resolution
Bitrate
Watermark
hls_avc_540_preset
540P
1000kbps
none
hls_avc_720_preset
720P
1800kbps
none
hls_avc_1080_preset
1080P
2500kbps
none
In addition, you can create and manage custom JIT transcoding templates through the server-side API.

Guide

1. After uploading the video to VOD, you could obtain the URL address of the video through the VOD console or server API :
2. Splice the JIT transcoding parameters and replace templateName in the URL with the template name to get the JIT transcoded playback URL.
3. The following case uses the preset template name hls_avc_720_preset as an example to show how to splice the JIT transcoding playback URL.
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