Function checkHasAudioTrack

apps/web/lib/audio-extract.ts:205–254

(videoUrl: string)

}

export async function checkHasAudioTrack(videoUrl: string): Promise<boolean> {
	let ffmpeg: string;
	try {
		ffmpeg = getFfmpegPath();
	} catch (err) {
		console.error(
			`[checkHasAudioTrack] ffmpeg binary not found, cannot check audio track:`,
			err,
		);
		throw new Error("ffmpeg binary not available — cannot check audio track");
	}
	const ffmpegArgs = ["-i", videoUrl, "-hide_banner"];

	return new Promise((resolve, reject) => {
		const proc = spawn(ffmpeg, ffmpegArgs, {
			stdio: ["pipe", "pipe", "pipe"],
		});

		let stderr = "";

		proc.stderr?.on("data", (data: Buffer) => {
			stderr += data.toString();
		});

		proc.on("error", (err) => {
			console.error(`[checkHasAudioTrack] ffmpeg process error:`, err);
			reject(new Error(`ffmpeg process error: ${err.message}`));
		});

		proc.on("close", () => {
			const hasVideo = /Stream #\d+:\d+.*Video:/.test(stderr);
			const hasAudio = /Stream #\d+:\d+.*Audio:/.test(stderr);

			if (!hasVideo) {
				console.error(
					`[checkHasAudioTrack] No video stream found — ffmpeg may not be able to read the file. stderr: ${stderr.substring(0, 500)}`,
				);
				reject(
					new Error(`ffmpeg could not read video file: no streams detected`),
				);
				return;
			}

			console.log(
				`[checkHasAudioTrack] Result: hasVideo=${hasVideo}, hasAudio=${hasAudio}`,
			);
			resolve(hasAudio);
		});
	});
}