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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →If audio starts in sync but gradually moves ahead of or behind the picture, first check for mismatched sample rates and independently clocked audio devices. If the gap stays the same throughout, measure it and use an OBS sync offset. A fixed offset cannot correct drift that keeps growing. The reviewed guidance does not establish an India-specific OBS sync fault or setting.
First identify whether it is drift or a fixed delay
Watch or listen at two points: near the start of the stream and after the problem becomes obvious. Note whether the audio is early or late at each point.
- Growing gap: Audio begins in sync, then becomes increasingly early or late. This suggests a timing problem, such as different audio-device clocks or inconsistent sample rates.
- Constant gap: Audio is already early or late by roughly the same amount and stays that way. This is consistent with a fixed latency, which may be corrected with a measured OBS sync offset.
Do not start by adding an arbitrary number of milliseconds. Measure the actual gap in the scene and signal path you use for the live stream. A specialist guide discusses this distinction and recommends checking sample rates for long-session drift: OBS-Studio.net’s audio/video desynchronization guide.
Compare the local OBS output with YouTube
Make a local OBS recording while reproducing the usual setup, then compare it with the YouTube live output or archive, if available. Check the beginning and the point where the mismatch is clear. This is a practical isolation step: it helps show whether the problem is already present in the OBS capture path or appears different in the YouTube output, but it does not by itself prove the cause.
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- If the local recording also drifts, focus first on the audio devices, their sample rates, and the OBS capture chain.
- If the local recording stays in sync while the YouTube output does not, keep that distinction in your troubleshooting notes and inspect OBS connection statistics and YouTube stream-health messages before changing source offsets.
Keep the test representative of the session length at which the problem normally appears. There is no universal minimum test duration established by the cited guidance.
Match the sample rate across OBS and audio devices
Check the sample rate in OBS and in the operating-system control panel or device software for each microphone, capture device, mixer, and virtual audio cable in use. Make the rates consistent across the chain. YouTube’s live-stream health documentation recommends 44.1 kHz and 48 kHz; 48 kHz is a practical common choice when the devices in your setup support it. The same documentation identifies a sample-rate mismatch between primary and backup streams as a configuration issue: YouTube Live stream health and configuration messages.
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- In OBS, open Settings → Audio and note the configured sample rate.
- Open the relevant operating-system audio settings or device control panel. Check every audio device OBS captures, including any mixer, capture device, or virtual cable.
- Set the devices and OBS to the same supported rate, and confirm the channel configuration is appropriate for your sources.
- If you send a backup feed to YouTube, make sure its audio sample rate matches the primary feed.
- Repeat the local-and-YouTube comparison, changing no other setting until you have checked the result.
Reduce independent audio clocks when your setup uses them
A USB capture device and a separate USB microphone may each provide audio on an independent clock. If you are capturing audio from multiple such devices and sample rates already match, test consolidating the sources through one audio interface or mixer, then repeat a representative long-session check. This is conditional troubleshooting, not a guarantee that new hardware will fix every setup. First try the free checks: compare outputs, match sample rates, and inspect the relevant diagnostics.
Use an OBS sync offset only for a stable gap
When the audio is consistently early or late by approximately the same amount, adjust the relevant source rather than applying a blanket correction to unrelated audio. In OBS, open Edit → Advanced Audio Properties, locate the source, and adjust its Sync Offset after measuring the delay. Test the actual live scene and path again.
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If the gap changes as the stream continues, a fixed offset will only align one moment; it cannot track a delay that keeps growing. Return to the sample-rate and device-clock checks instead.
Separate network symptoms from audio-clock drift
Open OBS View → Stats and watch the connection-related dropped-frame counter during the stream. OBS says rising dropped frames indicate an unstable connection to the remote streaming server or a bitrate the connection cannot sustain. Investigate the bitrate and network route if that counter rises; do not treat it as proof of an audio clock problem.
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OBS describes dynamic bitrate as a congestion-management option, not a root-cause fix; using it can reduce stream quality. Its connection guidance is here: OBS Stream Connection Troubleshooting. Viewer buffering is also distinct from dropped frames at the sender; OBS explains that distinction in its Stream Buffering Troubleshooting guide.
The available official OBS and YouTube guidance does not identify a special sync setting for India. Geography alone does not establish the cause. If you see connection-related evidence, investigate your individual connection and ingest route; otherwise, continue checking the capture chain.
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Verify one change at a time
- Save or note your current OBS settings so you can restore them.
- Record the sync near the start and when the problem normally appears, checking both local and YouTube outputs where possible.
- Change one relevant setting, such as matching a sample rate, then repeat the comparison.
- Write down the change and the time at which you checked the gap. If the result worsens, revert that setting before testing another cause.
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