implement URL download

closes #1486

README.md

@@ -59,6 +59,7 @@ The main feature is lossless trimming and cutting of video and audio files, whic
 - Speed up / slow down video or audio file ([changing FPS](https://github.com/mifi/lossless-cut/issues/1712))
 - Basic [CLI](cli.md) and [HTTP API](api.md)
 - Show (DJI) embedded GPS track on a map
+- Losslessly Download videos over HTTP (e.g. HLS `.m3u8`)
 
 ## Example lossless use cases
 

package.json

@@ -11,8 +11,8 @@
     "start": "electron-vite preview",
     "dev": "electron-vite dev -w",
     "icon-gen": "mkdirp icon-build build-resources/appx && tsx script/icon-gen.mts",
-    "download-ffmpeg-darwin-x64": "mkdirp ffmpeg/darwin-x64 && cd ffmpeg/darwin-x64 && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-1/ffmpeg-macos-X64 -O ffmpeg && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-1/ffprobe-macos-X64 -O ffprobe && chmod +x ffmpeg && chmod +x ffprobe",
+    "download-ffmpeg-darwin-x64": "mkdirp ffmpeg/darwin-x64 && cd ffmpeg/darwin-x64 && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-5/ffmpeg-macos-X64 -O ffmpeg && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-5/ffprobe-macos-X64 -O ffprobe && chmod +x ffmpeg && chmod +x ffprobe",
-    "download-ffmpeg-darwin-arm64": "mkdirp ffmpeg/darwin-arm64 && cd ffmpeg/darwin-arm64 && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-1/ffmpeg-macos-ARM64 -O ffmpeg && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-1/ffprobe-macos-ARM64 -O ffprobe && chmod +x ffmpeg && chmod +x ffprobe",
+    "download-ffmpeg-darwin-arm64": "mkdirp ffmpeg/darwin-arm64 && cd ffmpeg/darwin-arm64 && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-5/ffmpeg-macos-ARM64 -O ffmpeg && wget https://github.com/mifi/ffmpeg-build-script/releases/download/6.0-5/ffprobe-macos-ARM64 -O ffprobe && chmod +x ffmpeg && chmod +x ffprobe",
     "download-ffmpeg-linux-x64": "mkdirp ffmpeg/linux-x64 && cd ffmpeg/linux-x64 && wget https://github.com/mifi/ffmpeg-builds/releases/download/6.0/ffmpeg-n6.0-12-ga6dc92968a-linux64-gpl-shared-6.0.tar.xz -O ffmpeg-ffprobe.xz && tar -xv -f ffmpeg-ffprobe.xz && mv ffmpeg-n6.0-12-ga6dc92968a-linux64-gpl-shared-6.0 extracted && mkdirp lib && mv extracted/bin/ffmpeg extracted/bin/ffprobe extracted/lib/lib*.so* lib",
     "download-ffmpeg-win32-x64": "mkdirp ffmpeg/win32-x64 && cd ffmpeg/win32-x64 && npx download-cli https://github.com/mifi/ffmpeg-builds/releases/download/6.0/ffmpeg-n6.0-12-ga6dc92968a-win64-gpl-shared-6.0.zip --out . --filename ffmpeg-ffprobe.zip && 7z x ffmpeg-ffprobe.zip && mkdirp lib && cd ffmpeg-n6.0-12-ga6dc92968a-win64-gpl-shared-6.0/bin && npx shx mv ffmpeg.exe ffprobe.exe *.dll ../../lib",
     "build": "yarn icon-gen && electron-vite build",

src/main/ffmpeg.ts

@@ -664,5 +664,19 @@ export function createMediaSourceProcess({ path, videoStreamIndex, audioStreamIn
   return execa(getFfmpegPath(), args, { encoding: null, buffer: false, stderr: enableLog ? 'inherit' : 'pipe' });
 }
 
+export async function downloadMediaUrl(url: string, outPath: string) {
+  // User agent taken from https://techblog.willshouse.com/2012/01/03/most-common-user-agents/
+  const userAgent = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36';
+  const args = [
+    '-hide_banner', '-loglevel', 'error',
+    '-user_agent', userAgent,
+    '-i', url,
+    '-c', 'copy',
+    outPath,
+  ];
+
+  await runFfmpegProcess(args);
+}
+
 // Don't pass complex objects over the bridge (process)
 export const runFfmpeg = async (...args: Parameters<typeof runFfmpegProcess>) => runFfmpegProcess(...args);

src/main/index.ts

@@ -40,6 +40,8 @@ export { isLinux, isWindows, isMac, platform } from './util.js';
 
 export { pathToFileURL } from 'node:url';
 
+export { downloadMediaUrl } from './ffmpeg.js';
+
 
 const electronUnhandled = import('electron-unhandled');
 

src/main/menu.ts

@@ -35,6 +35,13 @@ export default ({ app, mainWindow, newVersion, isStoreBuild }: {
             mainWindow.webContents.send('openDirDialog');
           },
         },
+        {
+          label: esc(t('Open URL')),
+          async click() {
+            mainWindow.webContents.send('promptDownloadMediaUrl');
+          },
+        },
+        { type: 'separator' },
         {
           label: esc(t('Close')),
           accelerator: 'CmdOrCtrl+W',

src/renderer/src/App.tsx

@@ -74,13 +74,14 @@ import {
   deleteFiles, isOutOfSpaceError, readFileSize, readFileSizes, checkFileSizes, setDocumentTitle, getOutFileExtension, getSuffixedFileName, mustDisallowVob, readVideoTs, readDirRecursively, getImportProjectType,
   calcShouldShowWaveform, calcShouldShowKeyframes, mediaSourceQualities, getFrameDuration, isExecaError, getStdioString,
   isMuxNotSupported,
+  getDownloadMediaOutPath,
 } from './util';
 import { toast, errorToast } from './swal';
 import { formatDuration, parseDuration } from './util/duration';
 import { adjustRate } from './util/rate-calculator';
 import { askExtractFramesAsImages } from './dialogs/extractFrames';
 import { askForHtml5ifySpeed } from './dialogs/html5ify';
-import { askForOutDir, askForImportChapters, promptTimecode, askForFileOpenAction, confirmExtractAllStreamsDialog, showCleanupFilesDialog, showDiskFull, showExportFailedDialog, showConcatFailedDialog, openYouTubeChaptersDialog, showRefuseToOverwrite, openDirToast, openExportFinishedToast, openConcatFinishedToast, showOpenDialog, showMuxNotSupported } from './dialogs';
+import { askForOutDir, askForImportChapters, promptTimecode, askForFileOpenAction, confirmExtractAllStreamsDialog, showCleanupFilesDialog, showDiskFull, showExportFailedDialog, showConcatFailedDialog, openYouTubeChaptersDialog, showRefuseToOverwrite, openDirToast, openExportFinishedToast, openConcatFinishedToast, showOpenDialog, showMuxNotSupported, promptDownloadMediaUrl } from './dialogs';
 import { openSendReportDialog } from './reporting';
 import { fallbackLng } from './i18n';
 import { createSegment, getCleanCutSegments, findSegmentsAtCursor, sortSegments, convertSegmentsToChapters, hasAnySegmentOverlap, isDurationValid, playOnlyCurrentSegment, getSegmentTags } from './segments';
@@ -178,7 +179,7 @@ function App() {
 
   // Store "working" in a ref so we can avoid race conditions
   const workingRef = useRef(!!working);
-  const setWorking = useCallback((valOrBool: { text: string, abortController?: AbortController } | true | undefined) => {
+  const setWorking = useCallback((valOrBool?: { text: string, abortController?: AbortController } | true | undefined) => {
     workingRef.current = !!valOrBool;
     const val = valOrBool === true ? { text: t('Loading') } : valOrBool;
     setWorkingState(val ? { text: val.text, abortController: val.abortController } : undefined);
@@ -2149,6 +2150,23 @@ function App() {
     onEditSegmentTags(currentSegIndexSafe);
   }, [currentSegIndexSafe, onEditSegmentTags]);
 
+  const promptDownloadMediaUrlWrapper = useCallback(async () => {
+    if (customOutDir == null) {
+      errorToast(i18n.t('Please select a working directory first'));
+      return;
+    }
+    const outPath = getDownloadMediaOutPath(customOutDir, `downloaded-media-${Date.now()}.mkv`);
+    try {
+      setWorking(true);
+      const downloaded = await promptDownloadMediaUrl(outPath);
+      if (downloaded) await loadMedia({ filePath: outPath });
+    } catch (err) {
+      handleError(err);
+    } finally {
+      setWorking();
+    }
+  }, [customOutDir, loadMedia, setWorking]);
+
   type MainKeyboardAction = Exclude<KeyboardAction, 'closeActiveScreen' | 'toggleKeyboardShortcuts' | 'goToTimecodeDirect'>;
 
   const mainActions = useMemo(() => {
@@ -2486,6 +2504,7 @@ function App() {
         // todo separate actions per type and move them into mainActions? https://github.com/mifi/lossless-cut/issues/254#issuecomment-932649424
         importEdlFile,
         exportEdlFile: tryExportEdlFile,
+        promptDownloadMediaUrl: promptDownloadMediaUrlWrapper,
       }).map(([key, fn]) => [
         key,
         async (...args: unknown[]) => {
@@ -2544,7 +2563,7 @@ function App() {
       ipcActions.forEach(([key, action]) => electron.ipcRenderer.off(key, action));
       electron.ipcRenderer.off('apiAction', tryApiAction);
     };
-  }, [checkFileOpened, customOutDir, detectedFps, filePath, getFrameCount, getKeyboardAction, goToTimecodeDirect, loadCutSegments, mainActions, selectedSegments, toggleKeyboardShortcuts, userOpenFiles]);
+  }, [checkFileOpened, customOutDir, detectedFps, filePath, getFrameCount, getKeyboardAction, goToTimecodeDirect, loadCutSegments, mainActions, promptDownloadMediaUrlWrapper, selectedSegments, toggleKeyboardShortcuts, userOpenFiles]);
 
   useEffect(() => {
     async function onDrop(ev: DragEvent) {

src/renderer/src/dialogs/index.tsx

@@ -15,7 +15,10 @@ import Checkbox from '../components/Checkbox';
 import { isWindows, showItemInFolder } from '../util';
 import { ParseTimecode, SegmentBase } from '../types';
 
-const { dialog, shell } = window.require('@electron/remote');
+const remote = window.require('@electron/remote');
+const { dialog, shell } = remote;
+
+const { downloadMediaUrl } = remote.require('./index.js');
 
 
 export async function promptTimecode({ initialValue, title, text, inputPlaceholder, parseTimecode, allowRelative = false }: {
@@ -710,3 +713,18 @@ export async function askForPlaybackRate({ detectedFps, outputPlaybackRate }) {
 
   return parseValue(value);
 }
+
+export async function promptDownloadMediaUrl(outPath: string) {
+  const { value } = await Swal.fire<string>({
+    title: i18n.t('Open media from URL'),
+    input: 'text',
+    inputPlaceholder: 'https://example.com/video.m3u8',
+    text: i18n.t('Losslessly download a whole media file from the specified URL, mux it into an mkv file and open it in LosslessCut. This can be useful if you need to download a video from a website, e.g. a HLS streaming video. For example in Chrome you can open Developer Tools and view the network traffic, find the playlist (e.g. m3u8) and copy paste its URL here.'),
+    showCancelButton: true,
+  });
+
+  if (!value) return false;
+
+  await downloadMediaUrl(value, outPath);
+  return true;
+}

src/renderer/src/util.ts

@@ -52,6 +52,8 @@ export function getOutPath({ customOutDir, filePath, fileName }: { customOutDir?
   return join(getOutDir(customOutDir, filePath), fileName);
 }
 
+export const getDownloadMediaOutPath = (customOutDir: string, fileName: string) => join(customOutDir, fileName);
+
 export const getSuffixedFileName = (filePath: string | undefined, nameSuffix: string) => `${getFileBaseName(filePath)}-${nameSuffix}`;
 
 export function getSuffixedOutPath<T extends string | undefined>(a: { customOutDir?: string | undefined, filePath?: T | undefined, nameSuffix: string }): T extends string ? string : undefined;