Common issues and solutions for audio-video out-of-sync in live streaming

中文 When Audio 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  OBS Streaming tool Problem Scenario Problem Cause Solution Method 1 OBS Streaming + Network frame loss Streaming device Network Packet loss , resulting in frame loss or skipping in the input picture of the stream / Frame skipping It is recommended Check the OBS monitor and adjust the network by yourself: 【OBS】How to monitor the streaming quality? 2 OBS Streaming + Ultra - high bitrate Streaming Configuring an ultra - high bitrate requires a high network bandwidth. When the bandwidth is not sufficient, frame loss occurs Bandwidth It is recommended to set the bitrate according to the recommended bitrate value: 【OBS】Recommended live streaming settings 3 OBS streaming + Beauty filter plugin The camera uses YY Beauty and other plugins, causing a delay in the camera picture output and resulting in audio - video out - of - sync ●   If the beauty plugin is enabled, it is recommended to turn off the beauty plugin and try ●   If a voice - tuning software is enabled, it is recommended to turn off the voice - tuning software and try ●   If the sound card has a built - in voice - tuning console, it is recommended to set it back to the default configuration and try 4 OBS Streaming + 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 the device: 【OBS】How to monitor the streaming quality? 5 OBS streaming + Non - network and non - device performance scenario If it is confirmed that the network and CPU of the streaming device are normal, it may be related to the audio offset 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 OBS 2  elink Live streaming client Problem Scenario Problem Cause Solution Method 1 Network jitter Network jitter causes packet loss and frame loss in the audio and video upload When the client shows 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 fluctuates It is recommended to close unused software or replace the device with better performance 3 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 peripheral 4 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 delay Users 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 picture Temporarily turn off the beauty effect Or 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