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- What's New
- Function Overview
- Product Bulletin
- Service Overview
-
Billing
- Billing Items
- Basic Service Billing
- Value-added Service Billing
- Billing Modes
- Changing the Billing Option
- Renewing a Resource Package
- Bills
- Arrears
- Billing Termination
- Cost Management
-
Billing FAQs
-
Common Cases
- What Do I Need to Pay?
- Do I Need to Buy the CDN Service Before Using Live?
- How Do I Change the Billing Option?
- Do I Need to Delete Resources If I Don't Want to Use Live Any More?
- How Do I View the Usage and Expenditure of Pay-per-Use Live Resources?
- Is Downstream Traffic or Upstream Traffic Billed?
- Will I Be Billed for URL Validation?
- How Is Transcoding Billed?
- Does the Daily Peak Bandwidth Mean the Upstream Bandwidth or Downstream Bandwidth?
- Why Is a Recording Fee Deducted on the First Day of Each Month?
- Arrears
-
Common Cases
- Cloud Live
-
Media Live
- Overview
- Scenarios
- Functions
- Product Advantages
- Constraints
- Getting Started
-
Console Operations
- Prerequisites
- Functions
- Permissions Management
- Domain Name Management
- Channels
- Live Transcoding
- Service Monitoring
- Cloud Resource Authorization
- Tools
- Best Practices
-
Cloud Live API Reference
- Before You Start
- API Overview
- Calling APIs
- Examples
-
Domain Name Management
- Creating a Domain Name
- Deleting a Domain Name
- Modifying a Domain Name
- Querying a Domain Name
- Mapping Domain Names
- Deleting a Domain Name Mapping
- Configuring the Domain Name IPv6 Function
- Querying IP Address Information
- Modifying the Streaming Domain Name Delay
- Querying the Streaming Domain Name Delay
- Modifying the HLS Configuration of a Domain Name
- Querying HLS Configurations of Domain Names
- Modifying Origin Pull Settings
- Querying Origin Pull Settings
- Notification Management
-
Authentication Management
- Configuring a Referer Validation ACL
- Deleting a Referer Validation ACL
- Querying Referer Validation ACLs
- Querying IP Address ACLs
- Modifying an IP Address ACL
- Generating a Signed URL
- Querying Supported Areas of a Streaming Domain Name
- Modifying Supported Areas of a Streaming Domain Name
- Querying the URL Validation Configuration of a Specified Domain Name
- Modifying the URL Validation Configuration of a Specified Domain Name
- Deleting the URL Validation Configuration of a Specified Domain Name
- Snapshot Management
- Log Management
- Recording Management
- Recording Callback Management
- HTTPS Certificate Management
- OBS Bucket Management
- Transcoding Template Management
- Stream Management
-
Statistics Analysis
- Querying Peak Bandwidth
- Querying Total Traffic
- Querying HTTP Status Codes for Pulling Live Streams
- Querying the Duration of Transcoded Outputs
- Querying Recording Channels
- Querying the Number of Snapshots
- Querying Upstream Bandwidth
- Querying the Number of Stream Channels
- Querying the Historical Stream List
- Querying the Playback Profile
- Querying the Distribution of Live Streaming Metrics by Region
- Querying Stream Data of a Streaming Domain Name
- Stream Analytics
- Appendix
- Change History
-
Media Live API Reference
- Before You Start
- API Overview
- Calling APIs
- Examples
-
OTT Channel Management
- Creating an OTT Channel
- Querying Channel Information
- Deleting Channel Information
- Modifying Channel Packaging Information
- Modifying Channel Input Stream Information
- Modifying Channel Recording Information
- Modifying General Channel Information
- Changing the Channel Status
- Modifying Channel Transcoding Template Information
- Appendix
- Change History
- Cloud Live Server SDK Reference
- Low Latency Live Client SDK Reference
-
FAQs
-
Product Consulting
- Do I Need to Buy the CDN Service Before Using Live?
- How Do I Use Live? Do I Need to Create a Channel?
- In Which Regions Is Live Available?
- Can I Use a Camera to Stream Live Video?
- Do I Need to Have a Domain Name?
- Can I Send HTTP Requests After Configuring an HTTPS Certificate?
- How Do I Select a Live Origin Server and Acceleration Area?
-
Billing
- What Do I Need to Pay?
- How Do I View the Usage and Expenditure of Pay-per-Use Live Resources?
- How Do I Change the Billing Option?
- Do I Need to Delete Resources If I Don't Want to Use Live Any More?
- Is Downstream Traffic or Upstream Traffic Billed?
- Why Charges Are Still Debited to My Account Even Though My Account Is in Arrears?
- Will I Be Billed for URL Validation?
- How Is Transcoding Billed?
- How Do I Know Whether My Account Is in Arrears?
- Does the Daily Peak Bandwidth Mean the Upstream Bandwidth or Downstream Bandwidth?
- Why Is a Recording Fee Deducted on the First Day of Each Month?
-
Domain Name Management
- How Many Domain Names Can I Add?
- Are There Any Requirements for the Streaming and Ingest Domain Names?
- What Does CNAME Mean on the Domains Page?
- What Can I Do If a Message Is Displayed Indicating that the Domain Name Fails to Be Added and the User Is in the Deleted State?
- Why Does the Domain Status Change from Normal to Configuring?
- A Conflict Occurs When Adding a CNAME Record
- Can the Ingest and Streaming Domain Names Be Second-level Domain Names?
- Can a Domain Name Be Added to Live in Multiple Regions?
- How Do I Check Whether Acceleration Has Been Enabled for a Live Domain Name?
- Will My Domain Names Be Cleared If My Account Is in Arrears?
- How Long Should I Disconnect a Stream for the New Streaming Configuration to Take Effect?
-
Recording
- Can Live Recordings Be Stored in OBS?
- How Long Is the Maximum Recording Length?
- Can I Configure a Recording Template for Each Live Stream?
- Are Transcoded Streams Recorded During Live Recording?
- How Long Is the TS Segment Length Supported by Live?
- How Many Recordings Are Created for a Live Recording Task?
- Why Still Are Recording Files Created Even Though I Have Already Deleted the Recording Template?
- Why Are There Two Recording Files When A Live Stream Is Not Interrupted?
- How Do I Obtain the URL of Recordings?
- Can I Call an API to Record a Live Video?
- Why Are No Recording Files Created After I Configured a Recording to OBS Template?
- Can I Enter Wildcard Characters in Stream Name When I Configure Recording to OBS?
- How Do I Delete a Recording?
- Can Live Stream Recording Be Started and Stopped at Any Time?
- Why Didn't I Receive a RECORD_FILE_COMPLETE Callback?
- Do StreamNames Support Regular Expressions?
- Why Can't I Download Videos Using the download_url Generated During Recording?
- Why Do the Modified Recording Rule and File Storage Path Not Take Effect?
- Can I Record and Store the Live Streams That Are Disconnected for Multiple Times in One File?
-
Transcoding
- How Do I Play a Transcoded Live Video?
- Why Is the Live Video Resolution During Playback Inconsistent with That Configured In the Transcoding Template?
- How Does the System Define the Effective Template If I Configure Multiple Transcoding Templates?
- How Is a Video Transcoded When Only the Width or Height Is Configured?
- Why Is the BANDWIDTH Value in a Level-1 M3U8 File for Pulling a Transcoded Stream Not the Bitrate of the Transcoded Stream?
- How Do I Configure Definitions of Video Streams?
- Snapshot Capturing
-
Security
- How Do I Protect Live Videos?
- Are There Any Requirements for the Key and Timeout Interval in URL Validation?
- Why Does Referer Validation Not Take Effect?
- Do I Need to Use the Same Key for Streaming Authentication and Playback Authentication?
- How Do I Set the Validity Period of a Signed Ingest URL to a Longer Period?
- Why Does HTTPS Access Fail When an HTTPS Certificate Has Been Configured for My Domain Name?
- Why Are Messages Indicating Insecurity Displayed During Video Playback After an HTTPS Certificate Is Configured?
-
Streams Pushing
- Which Ingest Protocols Are Supported?
- How Do I Live Stream?
- How Do I Get the Ingest URL?
- Are There Any Requirements for StreamName in an Ingest URL?
- How Do I Obtain a StreamName?
- How Do I Set the Resolution and Bitrate?
- What Do I Do If Stream Pushing Failed?
- How Many Live Streams Can I Push Simultaneously?
- How Long Is the Latency If a Live Video Resolution is 1080p?
- What Can I Do If I Use OBS to Push Streams but the Latency Is Too High?
- Why Does Open Broadcaster Software Fail to Push Streams?
- How Do I Disable a Live Stream?
- How Do I View Disabled Live Streams?
- How Do I Resume a Disabled Live Stream?
- What Are the Differences Between Stream Disabled and Stream Interrupted?
- Can an Ingest URL Push Multiple Streams at the Same Time?
-
Live Streaming
- Which Streaming Protocols Are Supported?
- How Do I Get the Streaming URL?
- Are There Any Requirements for StreamName in a Streaming URL?
- What Can I Do If I Fail to Play a Live Video?
- Is There Any Limit on the Daily Downstream Traffic?
- Is There Any Limit on the Number of Concurrent Viewers?
- Can I Pull Live Streams from Other Platforms to Huawei Cloud Live?
- Why Do Black Bars Appear on the Video?
- Why Does Playback Using the HTTPS Address Fail?
- Callback
-
API Usage
- What Is the Token for Calling Live APIs?
- Why Does the System Display a Message Indicating that the API Does Not Exist When I Call an API?
- Why Is "projectId in token is nil" Returned When I Call an API?
- Why Is "The token must be updated" Returned When I Call an API?
- Why Is a Message Stating "APIG.0301" Displayed When a VOD API Is Called?
- How Can I Query the Peak Number of Concurrent Recording Channels in a Month?
- Why Do I Receive Only the Recording Completion Callback But Not the Recording Start Callback After Configuring Recording Callbacks?
- Statistics Analysis
- Third-Party Tools
-
Product Consulting
- Troubleshooting
- Videos
- General Reference
Copied.
Live Video Freezing
Symptom
Live video freezes while being played. The entire livestreaming process involves the streaming end, playback end, and origin server in Live (CDN), as shown in Figure 1. All of them may lead to video freezing. Perform the following operations to locate the cause and rectify the fault:
Checking the Streaming End
- Device configurations
Stream push will occupy a certain proportion of CPU resources. If a low-end device with poor hardware configurations is used and its overall CPU usage exceeds 80%, freezing and artifacts will occur, compromising video quality. You can change device configurations or use a higher version of streaming device to ensure device stability.
- Streaming SDK configurations
If the bitrate, frame rate, and encoding level set on the encoder are too high, the encoding speed will be lowered due to hardware constraints. If you use an iOS streaming device, hard coding is recommended because iOS is highly compatible with hardware devices and is more power-saving. If you use an Android streaming device, hard coding is recommended for Android 4.3 or later, as there are too many models and CPU types.
- Video parameter settings
To ensure smooth video playback, the frame rate is set to be greater than 15 frames per second (FPS). If the frame rate is lower than 10 FPS, noticeable freezing occurs. Therefore, a frame rate of 15–30 FPS is recommended. If the frame rate exceeds 30 FPS, human eyes cannot tell the difference and the bandwidth cost for video transmission will rise. A higher frame rate does not necessarily mean better video quality.
- Network bandwidth
Perform an online bandwidth test on the network of the streaming device. The recommended upstream bandwidth is higher than 10 Mbit/s.
- System resource usage
Check whether a large number of programs are running on the server. It yes, delete or stop these programs to release resources.
Checking the Playback End
- Most players have a receive buffer. A player decodes and plays the video after the buffer is full. The size of the receive buffer is also a factor of freezing during playback. You are advised to adjust the size of the receive buffer to avoid video freezing.
- If the player uses hard encoding in a poor network environment, drop frames and reduce audio bitrate to avoid video freezing.
- Perform an online bandwidth test. If the bandwidth of the player is insufficient or jitter occurs, video will freeze. Check whether there is ongoing download. Bandwidth-consuming operations such as download should be avoided during video playback.
- If you use the third-party tool Open Broadcaster Software (OBS) to push streams, perform the following steps to configure parameters:
- Choose Output and set Output Mode to Advanced.
- Set Keyframe Interval (seconds, 0=auto) to 2.
Figure 2 OBS streaming delay settings
Checking the Origin Server (CDN) in Live
If no problems are found on the streaming end and playback end, check whether the origin server and acceleration area are correctly configured.
If no problems are found, submit a service ticket to check whether the origin server or CDN in Live is faulty.
Attach the following information to the service ticket:
- Time when the problem occurs
- Symptom, including the ingest URL, streaming URL, and URLs with failed or slow access
- Information about the faulty node and the returned result diagram of pinging the domain name
- User egress IP address and egress DNS, for example, http://dns-detect-portal.n.cdnhwc5.cn/?domain=xx.xx.xx, and the access screenshots
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