OBS diagnostic issues
Full troubleshooting articles with symptoms, fixes, verification, and rollback.
NVENC session limit or encoder init failure
NVENC will not start or fails mid-stream because sessions are exhausted or the driver faults.
OS permission blocks screen capture
All capture types fail until the operating system grants screen recording permission.
Outdated encoder plugin conflicts
Third-party encoder plugins conflict with built-in NVENC/AMF/QSV paths.
Platform authentication expired
Connected account / OAuth session expired so streaming auth fails.
Plugin incompatible or outdated
OBS crashes or misbehaves because a plugin was built for another OBS version.
Preview black while stream looks fine
Local Preview/Program is black or stuck, but the live stream or recording file is correct.
Recording corruption — prefer MKV then remux
MP4 recordings are corrupt or unplayable after a crash or improper stop; MKV recovers.
Recording encoder overload causing stutter files
The recording encoder cannot keep up, producing stuttery files even when not streaming.
Recording stutters from slow disk or full volume
Local recordings hitch, freeze, or stop because the disk cannot sustain write speed or is full.
Rendering lag high in OBS Stats
Stats show elevated rendering lag; frames miss compose deadlines before encode.
Replay Buffer memory pressure
Replay Buffer uses large RAM and can destabilize OBS on long sessions.
Replay Buffer save fails
Save Replay fails from permissions, disk space, or path issues.
Safe Mode recovers a broken launch
OBS only starts cleanly in Safe Mode, indicating plugin or third-party interference.
Sample-rate mismatch causing crackles or drift
OBS and devices disagree on 44.1 vs 48 kHz, causing crackles, pitch issues, or drift.
Scene complexity causing render stalls
Heavy scenes with nests, media, and alerts cause freezes and render stalls.
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