init commit

remotion/node_modules/@remotion/renderer/dist/assets/get-audio-channels.js

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+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.getAudioChannelsAndDuration = exports.getAudioChannelsAndDurationWithoutCache = void 0;
+const call_ffmpeg_1 = require("../call-ffmpeg");
+const p_limit_1 = require("../p-limit");
+const limit = (0, p_limit_1.pLimit)(1);
+const getAudioChannelsAndDurationWithoutCache = async ({ src, indent, logLevel, binariesDirectory, cancelSignal, audioStreamIndex, }) => {
+    const args = [
+        ['-v', 'error'],
+        ['-select_streams', audioStreamIndex ? `a:${audioStreamIndex}` : 'a:0'],
+        [
+            '-show_entries',
+            'stream=channels:stream=start_time:format=duration:format=format_name',
+        ],
+        ['-of', 'default=nw=1'],
+        [src],
+    ]
+        .reduce((acc, val) => acc.concat(val), [])
+        .filter(Boolean);
+    try {
+        const task = await (0, call_ffmpeg_1.callFf)({
+            bin: 'ffprobe',
+            args,
+            indent,
+            logLevel,
+            binariesDirectory,
+            cancelSignal,
+        });
+        const channels = task.stdout.match(/channels=([0-9]+)/);
+        const duration = task.stdout.match(/duration=([0-9.]+)/);
+        const startTime = task.stdout.match(/start_time=([0-9.]+)/);
+        const container = task.stdout.match(/format_name=([a-zA-Z0-9.]+)/);
+        const isMP3 = container ? container[1] === 'mp3' : false;
+        const result = {
+            channels: channels ? parseInt(channels[1], 10) : 0,
+            duration: duration ? parseFloat(duration[1]) : null,
+            // We ignore the start time for MP3 because that is an inherent encoder thing
+            // not in the sense that we want
+            startTime: startTime ? (isMP3 ? 0 : parseFloat(startTime[1])) : null,
+        };
+        return result;
+    }
+    catch (err) {
+        if (err.message.includes('This file cannot be read by `ffprobe`. Is it a valid multimedia file?')) {
+            throw new Error('This file cannot be read by `ffprobe`. Is it a valid multimedia file?');
+        }
+        throw err;
+    }
+};
+exports.getAudioChannelsAndDurationWithoutCache = getAudioChannelsAndDurationWithoutCache;
+async function getAudioChannelsAndDurationUnlimited({ downloadMap, src, indent, logLevel, binariesDirectory, cancelSignal, audioStreamIndex, }) {
+    const cacheKey = audioStreamIndex ? `${src}-${audioStreamIndex}` : src;
+    if (downloadMap.durationOfAssetCache[cacheKey]) {
+        return downloadMap.durationOfAssetCache[cacheKey];
+    }
+    const result = await (0, exports.getAudioChannelsAndDurationWithoutCache)({
+        src,
+        indent,
+        logLevel,
+        binariesDirectory,
+        cancelSignal,
+        audioStreamIndex,
+    });
+    downloadMap.durationOfAssetCache[cacheKey] = result;
+    return result;
+}
+const getAudioChannelsAndDuration = ({ downloadMap, src, indent, logLevel, binariesDirectory, cancelSignal, audioStreamIndex, }) => {
+    return limit(() => getAudioChannelsAndDurationUnlimited({
+        downloadMap,
+        src,
+        indent,
+        logLevel,
+        binariesDirectory,
+        cancelSignal,
+        audioStreamIndex,
+    }));
+};
+exports.getAudioChannelsAndDuration = getAudioChannelsAndDuration;