If a gunshot follows the muzzle flash or the microphone falls farther behind over time, first decide whether the offset stays constant or grows. If audio is completely missing, use game recording no-sound fixes; if you are still building the inputs, see recording game and microphone audio.
The sync pattern points to the cause
Pattern
Likely cause
First action
Same delay from start to finish
Device, Bluetooth, or filter latency
Test a sync offset or wired device
Gap grows over time
Sample-rate mismatch or timing drift
Align app and device sample rates
Jumps only under load
Rendering or encoding lag
Reduce load and inspect Stats
Different in each player
Playback or variable-frame handling
Compare the original in another player/editor
Duplicate the source file before editing and note the direction and time of each mismatch.
Correct it without risking the original
1Measure the patternCompare the same kind of sound event near the beginning and end.
2Cross-check playbackOpen the original in another player and an editor.
3Align sample ratesKeep OBS and active Windows playback/recording devices consistent.
4Remove wireless latencyRun a short test with wired headphones and microphone instead of Bluetooth.
5Reduce encoder loadIf frames are missed, ease game and output settings before recording again.
6Edit a fixed offsetOn a copy, move audio and align a clap, click, or gunshot waveform.
Before re-recording a long session, make a short test containing a visible and audible event such as a clap, menu click, or shot. Its waveform is easier to align than speech by eye.
Actual DOR editing screen used to review and edit a recorded game clip.
Prevent the next recording from drifting
DOR does not claim to automatically repair every out-of-sync recording. You can test DOR automatic game recording as a separate workflow for supported games, but always make a short sync test before an important session.
Use it for a delay that remains the same from beginning to end. A single offset cannot correct a gap that grows over time.
Can Bluetooth headphones cause sync problems?
Wireless devices can add latency and switch audio profiles. A short wired-device test quickly shows whether Bluetooth is involved.
Which sample rate should I use?
Consistency matters more here than prescribing one value. Match OBS with the active Windows playback and recording devices, reinitialize them, and test.
Does DOR automatically fix out-of-sync audio?
This guide makes no such guarantee. Test video and audio with a short recording before any important DOR session too.