- Release Notes and Announcements
- Release Notes
- Announcements
- Announcement about the addition of mobile player SDK premium features authorization verification
- Announcement about the addition of web player SDK license authorization verification
- Announcement on the Official Launch of the Video on Demand Real-Time Log Analysis Feature
- Notice about the adjustment of the VOD adding domain feature
- Announcement on official commercial billing of Video on Demand STANDARD_IA data retrieval and Application Management functions
- Announcement on the Official Launch of the Media Quality Inspection and Play Channel Features
- Announcement on the official launch of the Video-on-Demand QUIC Acceleration feature
- VOD Launched Remaster Feature
- Prepaid Packages Supported for Monthly Billed Accounts
- Cost Allocation by Tag Supported
- Content Moderation Upgraded
- VOD Player Signature Upgrade
- Live Clipping to Become Paid Feature
- Content Recognition to Become Paid Feature
- The “startPlay” API of the Player SDK Renamed
- TESHD Renamed as TSC
- Announcement on VOD Video Acceleration Price Change
- Launching Video on Demand (VOD) Features for Regions Outside the Chinese Mainland
- About Changing the Billing Rule of Transcoding Service for VOD/MPS
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Service Overview
- Application Management
- Media Management
- Package Management
- License Management
- Real-Time Log Analysis
- Best Practice
- Media Upload
- Smart Cold Storage of VOD Media Asset Files
- Video Processing
- Distribution and Playback
- How to Receive Event Notification
- How to Migrate Files from Origin Server to VOD
- Live Recording
- How to Make VOD Videos Live Streaming-Like
- Using VOD and WordPress to Build a Website
- How to Pull from Custom Origin Servers
- Development Guide
- Player SDK
- Server APIs
- History
- Introduction
- API Category
- Other APIs
- Media processing related API
- No longer recommended APIs
- Task Management APIs
- Media Upload APIs
- Media Management APIs
- Media Categorization APIs
- Distribution APIs
- AI-based Sample Management APIs
- Region Management APIs
- Statistics APIs
- Just In Time Transcode APIs
- Making API Requests
- AI-based image processing APIs
- Parameter Template APIs
- CreateWatermarkTemplate
- CreateSnapshotByTimeOffsetTemplate
- CreateSampleSnapshotTemplate
- CreateImageSpriteTemplate
- CreateAnimatedGraphicsTemplate
- CreateAdaptiveDynamicStreamingTemplate
- CreateAIAnalysisTemplate
- ModifyWatermarkTemplate
- ModifySnapshotByTimeOffsetTemplate
- ModifySampleSnapshotTemplate
- ModifyImageSpriteTemplate
- ModifyAnimatedGraphicsTemplate
- ModifyAdaptiveDynamicStreamingTemplate
- ModifyAIRecognitionTemplate
- ModifyAIAnalysisTemplate
- DescribeTranscodeTemplates
- DescribeWatermarkTemplates
- DescribeSnapshotByTimeOffsetTemplates
- DescribeSampleSnapshotTemplates
- DescribeImageSpriteTemplates
- DescribeAnimatedGraphicsTemplates
- DescribeAdaptiveDynamicStreamingTemplates
- DescribeAIRecognitionTemplates
- DescribeAIAnalysisTemplates
- DeleteTranscodeTemplate
- DeleteWatermarkTemplate
- DeleteSnapshotByTimeOffsetTemplate
- DeleteSampleSnapshotTemplate
- DeleteImageSpriteTemplate
- DeleteAnimatedGraphicsTemplate
- DeleteAdaptiveDynamicStreamingTemplate
- DeleteReviewTemplate
- DeleteAIRecognitionTemplate
- DeleteAIAnalysisTemplate
- DeleteHeadTailTemplate
- DeleteImageProcessingTemplate
- DescribeReviewTemplates
- CreateReviewTemplate
- CreateTranscodeTemplate
- ModifyReviewTemplate
- ModifyTranscodeTemplate
- CreateAIRecognitionTemplate
- CreateHeadTailTemplate
- CreateImageProcessingTemplate
- DescribeHeadTailTemplates
- DescribeImageProcessingTemplates
- ModifyHeadTailTemplate
- CreateQualityInspectTemplate
- DeleteQualityInspectTemplate
- DescribeQualityInspectTemplates
- ModifyQualityInspectTemplate
- CreateEnhanceMediaTemplate
- DeleteEnhanceMediaTemplate
- ModifyEnhanceMediaTemplate
- DescribeEnhanceMediaTemplates
- Task Flow APIs
- Event Notification Relevant API
- Domain Name Management APIs
- Playlist APIs
- Data Types
- Error Codes
- FAQs
- Agreements
- VOD Policy
- Contact Us
- Glossary
- Release Notes and Announcements
- Release Notes
- Announcements
- Announcement about the addition of mobile player SDK premium features authorization verification
- Announcement about the addition of web player SDK license authorization verification
- Announcement on the Official Launch of the Video on Demand Real-Time Log Analysis Feature
- Notice about the adjustment of the VOD adding domain feature
- Announcement on official commercial billing of Video on Demand STANDARD_IA data retrieval and Application Management functions
- Announcement on the Official Launch of the Media Quality Inspection and Play Channel Features
- Announcement on the official launch of the Video-on-Demand QUIC Acceleration feature
- VOD Launched Remaster Feature
- Prepaid Packages Supported for Monthly Billed Accounts
- Cost Allocation by Tag Supported
- Content Moderation Upgraded
- VOD Player Signature Upgrade
- Live Clipping to Become Paid Feature
- Content Recognition to Become Paid Feature
- The “startPlay” API of the Player SDK Renamed
- TESHD Renamed as TSC
- Announcement on VOD Video Acceleration Price Change
- Launching Video on Demand (VOD) Features for Regions Outside the Chinese Mainland
- About Changing the Billing Rule of Transcoding Service for VOD/MPS
- Product Introduction
- Purchase Guide
- Getting Started
- Console Guide
- Console Overview
- Service Overview
- Application Management
- Media Management
- Package Management
- License Management
- Real-Time Log Analysis
- Best Practice
- Media Upload
- Smart Cold Storage of VOD Media Asset Files
- Video Processing
- Distribution and Playback
- How to Receive Event Notification
- How to Migrate Files from Origin Server to VOD
- Live Recording
- How to Make VOD Videos Live Streaming-Like
- Using VOD and WordPress to Build a Website
- How to Pull from Custom Origin Servers
- Development Guide
- Player SDK
- Server APIs
- History
- Introduction
- API Category
- Other APIs
- Media processing related API
- No longer recommended APIs
- Task Management APIs
- Media Upload APIs
- Media Management APIs
- Media Categorization APIs
- Distribution APIs
- AI-based Sample Management APIs
- Region Management APIs
- Statistics APIs
- Just In Time Transcode APIs
- Making API Requests
- AI-based image processing APIs
- Parameter Template APIs
- CreateWatermarkTemplate
- CreateSnapshotByTimeOffsetTemplate
- CreateSampleSnapshotTemplate
- CreateImageSpriteTemplate
- CreateAnimatedGraphicsTemplate
- CreateAdaptiveDynamicStreamingTemplate
- CreateAIAnalysisTemplate
- ModifyWatermarkTemplate
- ModifySnapshotByTimeOffsetTemplate
- ModifySampleSnapshotTemplate
- ModifyImageSpriteTemplate
- ModifyAnimatedGraphicsTemplate
- ModifyAdaptiveDynamicStreamingTemplate
- ModifyAIRecognitionTemplate
- ModifyAIAnalysisTemplate
- DescribeTranscodeTemplates
- DescribeWatermarkTemplates
- DescribeSnapshotByTimeOffsetTemplates
- DescribeSampleSnapshotTemplates
- DescribeImageSpriteTemplates
- DescribeAnimatedGraphicsTemplates
- DescribeAdaptiveDynamicStreamingTemplates
- DescribeAIRecognitionTemplates
- DescribeAIAnalysisTemplates
- DeleteTranscodeTemplate
- DeleteWatermarkTemplate
- DeleteSnapshotByTimeOffsetTemplate
- DeleteSampleSnapshotTemplate
- DeleteImageSpriteTemplate
- DeleteAnimatedGraphicsTemplate
- DeleteAdaptiveDynamicStreamingTemplate
- DeleteReviewTemplate
- DeleteAIRecognitionTemplate
- DeleteAIAnalysisTemplate
- DeleteHeadTailTemplate
- DeleteImageProcessingTemplate
- DescribeReviewTemplates
- CreateReviewTemplate
- CreateTranscodeTemplate
- ModifyReviewTemplate
- ModifyTranscodeTemplate
- CreateAIRecognitionTemplate
- CreateHeadTailTemplate
- CreateImageProcessingTemplate
- DescribeHeadTailTemplates
- DescribeImageProcessingTemplates
- ModifyHeadTailTemplate
- CreateQualityInspectTemplate
- DeleteQualityInspectTemplate
- DescribeQualityInspectTemplates
- ModifyQualityInspectTemplate
- CreateEnhanceMediaTemplate
- DeleteEnhanceMediaTemplate
- ModifyEnhanceMediaTemplate
- DescribeEnhanceMediaTemplates
- Task Flow APIs
- Event Notification Relevant API
- Domain Name Management APIs
- Playlist APIs
- Data Types
- Error Codes
- FAQs
- Agreements
- VOD Policy
- Contact Us
- Glossary
Combining the time shifting feature of CSS and the delivery acceleration capability of VOD, time shifting for live stream playback allows users to rewind and play back earlier parts of a live stream. This is commonly used to play back highlights during live streamed sports events. Users can drag the progress bar to view earlier parts of a live stream, and they can also switch back to continue viewing the currently ongoing live stream.
Strengths
Users can specify the delay for playing live content, i.e., the difference between the playback start time and current time.
Users can specify the bitrate for time shifting if a live stream is recorded in multiple bitrates.
Prerequisites
You have activated CSS and added a push domain.
Must-Knows
Before you can use the time shifting feature, you must first enable the feature for a stream.
Currently, the smallest time-shift offset is 90 seconds, which means there must be a delay of at least 90 seconds between live content and time-shifted content.
Time shifting relies on the live recording feature. Therefore, you may also incur VOD storage and traffic costs.
Directions
Step 1. Activate VOD
1. Go to the VOD console. Click Activate Now.
2. Agree to the service agreement, and click OK to activate VOD.
Step 2. Add a domain for time shifting
Follow the steps below to add a VOD domain for time shifting:
1. Log in to the VOD console. Select Application Management on the left sidebar and select the target application. Go to Distribution and Playback > Domain Name.
2. Click Add Domain and enter a domain name. For detailed directions, see Distribution and Playback Settings.
3. Add a CNAME record for the domain.
Step 3. Bind a recording template
1. Go to the CSS console and select Feature Configuration > Live Recording.
2. Click Create Template. For detailed directions, see Live Recording.
Note:
Select HLS as the file format.
Set the file storage period, which cannot be shorter than the time-shift period.
3. Bind the recording template to the push domain. For detailed directions, see Recording Configuration.
Step 4. Enable time shifting
You need to submit a ticket to enable the time shifting feature: Select "CSS", make your request, and provide the following parameters:
The domain added in Step 2.
The ID of the recording template created in Step 3.
The time-shift period (
timeshift_dur) in seconds.Note:
Time-shift period indicates how further back you can go in terms of time shifting. The maximum time-shift period allowed currently is 7 days.
This feature may not work exactly according to the period configured. We recommend you set the period a little longer than you actually need.
If the time-shift period is set to
7200 (two hours), you will be able to request content generated as early as two hours ago. (i.e., the value range for playback delay is 90 seconds to 2 hours). If content generated earlier than two hours ago is requested, HTTP 404 will be returned even if there is live streaming content at the requested time.Playback Request
Request URL format
http://[Domain]/timeshift/[AppName]/[StreamName]/timeshift.m3u8?delay=xxx
Parameter description
Parameter | Description |
[Domain] | The domain you registered for time shifting (the domain you added in the VOD console). |
timeshift | This is a fixed field. You don't need to modify it. |
[AppName] | The application name. For example, if your application is named live, pass in live. |
[StreamName] | The stream name. |
timeshift.m3u8 | This is a fixed field. You don't need to modify it. |
delay | The playback delay (seconds). This parameter cannot be smaller than 90. If you pass in a value smaller than 90, 90 will be used. |
Example
Suppose the time-shift domain name is
testtimeshift.com, application name live, and stream name SLPUrIFzGPE. If you need to play back live content generated 5 minutes ago, the request URL should be:http://testtimeshift.com/timeshift/live/SLPUrIFzGPE/timeshift.m3u8?delay=300
Yes
No
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