[BUG] There is a problem with the exported encoding.

Platform

Ubuntu 14.4

Browser

Chrome Version 144.0.7559.132 (Official Build) (64-bit)

Current Behavior

I encountered an error when trying to export to WebM video format: Input audio buffer is incompatible with codec parameters.

and when i trying to export to mp4 format also encountered error: This specific encoder configuration (mp4a.40.2, 128000 bps, 2 channels, 44100 Hz) is not supported by this browser. Consider using another codec or changing your audio parameters.

Expected Behavior

i not have any expected behavior! and i just change my system from windows to linux ubuntu ?!

Recurrence Probability

Always

Steps To Reproduce

1. just to open the opencut;
2. and made an video;
3. then i trying to export;

Anything else?

i think i can solove the question about export to WebM video format, but the mp4 format i can't:

cd the doc:

OpenCut/apps/web/src/services/renderer/scene-exporter.ts

and find this part of the code:

		let audioSource: AudioBufferSource | null = null;
		if (this.shouldIncludeAudio && this.audioBuffer) {
			audioSource = new AudioBufferSource({
				codec: this.format === "webm" ? "opus" : "aac",
				bitrate: qualityMap[this.quality],
			});
			output.addAudioTrack(audioSource);
		}

Modified to：

let audioSource: AudioBufferSource | null = null;
		if (this.shouldIncludeAudio && this.audioBuffer) {
			console.log("DEBUG: AudioBuffer info:", {
				sampleRate: this.audioBuffer.sampleRate,
				channels: this.audioBuffer.numberOfChannels
			});

			audioSource = new AudioBufferSource({
				codec: this.format === "webm" ? "opus" : "aac",
				bitrate: this.format === "webm" ? qualityMap[this.quality] : 128000,
				sampleRate: this.audioBuffer.sampleRate,
				numberOfChannels: this.audioBuffer.numberOfChannels,
			} as any); 

			output.addAudioTrack(audioSource);
		}

Then you can successfully export the WebM video format.

Start in OpenCut/apps/web/src/services/renderer/scene-exporter.ts, especially the AudioBufferSource setup used during WebM and MP4 export. Reproduce the audio export failure on Ubuntu with Chrome, then inspect the browser encoder constraints and the supplied audio buffer details. Done means exporting both formats succeeds without the reported codec errors.