# Common issues and solutions for audio-video out-of-sync in live streaming
[中文](/books/091d5/page/a02ff)
WhenAudio and video are out of sync during the live stream, affecting the viewing experience, you can match the corresponding solution according to the live streaming tool and scenario for processing ##### ##### ##### ##### ##### 1 OBSStreaming tool
Problem Scenario ProblemCause SolutionMethod
1 OBSStreaming + Network frame loss Streaming deviceNetworkPacket loss,resulting in frame loss or skipping in the input picture of the stream/Frame skipping It is recommendedCheck the OBS monitor andadjust the network by yourself:【OBS】How to monitor the streaming quality? [2](https://helpcenter.xiaoe-tech.com/#/problem/detail?document_id=doc_638ee87753ca1_2rTTp)
OBS Streaming + Ultra - high bitrateStreaming Configuring an ultra - high bitrate requires a high network bandwidth. When the bandwidthis not sufficient, frame loss occursBandwidthIt is recommended to set the bitrate according to therecommendedbitrate value:【OBS】Recommended live streaming settings [3](https://helpcenter.xiaoe-tech.com/#/problem/detail?document_id=doc_638ee4af4ff2b_XgV9i)
OBS streaming + Beauty filter plugin The camera uses YY Beautyand otherplugins, causing a delay in the camera picture output and resulting in audio - video out - of - sync● If the beautypluginis enabled,it is recommendedto turn off the beautyplugin and try● If a voice - tuning software is enabled,it is recommendedto turn off the voice - tuning software and try● If the sound card has a built - in voice - tuning console,it is recommendedto set it back to thedefaultconfiguration and try4OBSStreaming + Device performance
The CPU usage of the streaming device is high, resulting in audio - video out - of - sync It is recommended to check the OBS monitor. If the device performance is poor, consider replacing thedevice: 【OBS】How to monitor the streaming quality?5 OBS streaming + Non - network and non - device performance scenarioIf it is confirmed that the network and CPU of the streaming device are normal, [it may be related to the audio offset](https://helpcenter.xiaoe-tech.com/#/problem/detail?document_id=doc_638ee87753ca1_2rTTp)
1. You can try to adjust the audio synchronization offset and manually correct the audio and video 2. If the previous steps have no effect, try restarting OBS2 elink Live streaming clientProblemScenario Problem
##### CauseSolution
Method 1 Network jitterNetwork jitter causes packet loss and frame loss in the audio and video upload When the clientshows a poor network prompt,
it is recommended to switch to a stable network 2 Device performance (mainly CPU)When the CPU load is high, the frame rate of audio and video picture capture fluctuatesIt is recommendedto close unused software or replace the device with better performance3
External microphone malfunction The input delay of the external microphone causes audio - video out - of - sync 1. It is recommended to test whether there is a delay when using this peripheral in other software 2. If it malfunctions in all software, it is recommended to replace the problematic peripheral4
Custom beauty filter Users use a custom beauty filter, which consumes performance and affects audio and video encoding and decoding It is recommended to temporarily turn off the beauty effect
or replace the device with better performance 5 Virtual camera input delayUsers use virtual cameras such as YY and OBS, but input delay occurs, resulting in audio - video out - of - sync Third - party virtual cameras are currently uncontrollable. It is recommended to try turning off the virtual camera for debugging and observe whether there is a delay in the pictureTemporarily turn off the beauty effectOr replace with a device with better performance
5 Input delay of the virtual camera The user is using virtual cameras such as YY or OBS, but input delay occurs, resulting in out-of-sync audio and video Currently, third-party virtual cameras cannot be controlled. It is recommended to try turning off the virtual camera for debugging and observe if there is any delay in the picture