Audio silent on Windows

Help/How To
1

Hello. I have a project on Windows 10 using Shotcut 26.8.1. The project is set to be 2 channel audio, and I am using a Samsung screen over HDMI for audio. Audio works in other applications, but whatever interface I use, audio is non functional in Shotcut. The meters work and the audio isn’t muted in Shotcut, but the log reveals SDL failures and fallback attempts (also failing):

[Info   ] <MainWindow::open> "F:/France 2026/France2026.gpu.mlt" 
[Info   ] <MLT> [chain avformat] "F:/France 2026/HLG/P1157515.MOV" hwaccel d3d11 av_hwdevice_ctx_create() success
[Info   ] <Util::isMemoryLow> available RAM =  26143628 KB 
[Info   ] <MLT> Failed to open audio device: WASAPI can't initialize audio client: Not enough memory resources are available to complete this operation.
[Info   ] <MLT> [sdl2] Try alternative driver: wasapi
[Info   ] <MLT> [sdl2] Open failed: WASAPI can't initialize audio client: Not enough memory resources are available to complete this operation.
[Info   ] <MLT> [sdl2] Try alternative driver: directsound
[Info   ] <MLT> [sdl2] Open failed: DirectSoundCreate8: Out of memory (0x8007000e)
[Info   ] <MLT> [sdl2] Try alternative driver: winmm
[Info   ] <MLT> [sdl2] Open failed: waveOutOpen(): There is not enough memory available for this task.  Quit one or more applications to increase available memory, and then try again.
[Error  ] <MLT> [consumer sdl2_audio] SDL failed to open audio

Since the available RAM is over 20GB I do not believe it is really running out of RAM, but merely failing an allocation somewhere.

Is there anywhere I can troubleshoot this?

2

Settings > Player > Audio API

3

Yes, I have tried that and restarted. Like I said, no matter what interface I use, it fails. As you can also see from the log I provided, the audio system is attempting to use the different APIs (wasapi, directsound and winmm) and all are failing.

4

Restarted the computer (OS)? You should try that if you only restarted Shotcut. The audio driver might report some kind of other problem as memory allocation failed. Also, check if Shotcut Settings > Audio Channels is set to stereo.