One mono channel from dual-channel source audio goes silent after a while, returns after restarting Resolve
I am working in DaVinci Resolve Studio 20.3.2, build 20.3.20009 on macOS.
In my timeline, the two embedded audio channels from the source clips are placed on separate mono tracks.
The project was copied and the media was relinked to the original source files. Since then, one of the two mono tracks carrying one embedded source channel intermittently stops playing:
- After opening Resolve, both mono channels play correctly.
- After some time, one of the two mono tracks becomes silent.
- Restarting Resolve restores the missing channel temporarily.
- After a while, it disappears again.
- In Clip Attributes > Audio, both embedded source channels are still present and correctly mapped.
- The media is correctly relinked to the original source files.
It feels like an audio playback/cache/state issue rather than incorrect channel mapping. Any advice?
- Is there any way to reset the affected audio playback/cache state inside Resolve without restarting?
- Is this a known issue in Resolve with dual-channel PCM source audio split onto mono timeline tracks?
- Could copying a project and relinking the original source files trigger this behavior?
- What diagnostic logs or project information would be useful to investigate this?
System: iMac20,1, 10-Core Intel Core i9 3.6 GHz, 64 GB RAM, macOS 26.2 (25C56)
Source media: Panasonic DC-S5, .MOV
- Video: H.264 / AVC High 4:2:2@L5.1, 10-bit, 4:2:2, Long GOP, 150 Mb/s, 4096 × 2160, 25 fps
- Audio: PCM, 2 channels L/R, 48 kHz, 16-bit