3 files changed, 47 insertions, 4 deletions

diff --git a/server/helpers/youtube-dl/youtube-dl-cli.ts b/server/helpers/youtube-dl/youtube-dl-cli.ts
index 13c990a1e..5a87b99b4 100644
--- a/server/helpers/youtube-dl/youtube-dl-cli.ts
+++ b/server/helpers/youtube-dl/youtube-dl-cli.ts
@@ -87,6 +87,7 @@ export class YoutubeDLCLI {
     return result.concat([
       'bestvideo[vcodec!*=av01][vcodec!*=vp9.2]+bestaudio',
       'best[vcodec!*=av01][vcodec!*=vp9.2]', // case fallback for known formats
+      'bestvideo[ext=mp4]+bestaudio[ext=m4a]',
       'best' // Ultimate fallback
     ]).join('/')
   }
@@ -103,11 +104,14 @@ export class YoutubeDLCLI {
     timeout?: number
     additionalYoutubeDLArgs?: string[]
   }) {
+    let args = options.additionalYoutubeDLArgs || []
+    args = args.concat([ '--merge-output-format', 'mp4', '-f', options.format, '-o', options.output ])
+
     return this.run({
       url: options.url,
       processOptions: options.processOptions,
       timeout: options.timeout,
-      args: (options.additionalYoutubeDLArgs || []).concat([ '-f', options.format, '-o', options.output ])
+      args
     })
   }
 
@@ -129,6 +133,25 @@ export class YoutubeDLCLI {
       : info
   }
 
+  getListInfo (options: {
+    url: string
+    latestVideosCount?: number
+    processOptions: execa.NodeOptions
+  }): Promise<{ upload_date: string, webpage_url: string }[]> {
+    const additionalYoutubeDLArgs = [ '--skip-download', '--playlist-reverse' ]
+
+    if (options.latestVideosCount !== undefined) {
+      additionalYoutubeDLArgs.push('--playlist-end', options.latestVideosCount.toString())
+    }
+
+    return this.getInfo({
+      url: options.url,
+      format: YoutubeDLCLI.getYoutubeDLVideoFormat([], false),
+      processOptions: options.processOptions,
+      additionalYoutubeDLArgs
+    })
+  }
+
   async getSubs (options: {
     url: string
     format: 'vtt'
@@ -175,7 +198,7 @@ export class YoutubeDLCLI {
 
     const output = await subProcess
 
-    logger.debug('Runned youtube-dl command.', { command: output.command, ...lTags() })
+    logger.debug('Run youtube-dl command.', { command: output.command, ...lTags() })
 
     return output.stdout
       ? output.stdout.trim().split(/\r?\n/)
diff --git a/server/helpers/youtube-dl/youtube-dl-info-builder.ts b/server/helpers/youtube-dl/youtube-dl-info-builder.ts
index 71572f292..303e4051f 100644
--- a/server/helpers/youtube-dl/youtube-dl-info-builder.ts
+++ b/server/helpers/youtube-dl/youtube-dl-info-builder.ts
@@ -13,6 +13,7 @@ type YoutubeDLInfo = {
   thumbnailUrl?: string
   ext?: string
   originallyPublishedAt?: Date
+  webpageUrl?: string
 
   urls?: string[]
 }
@@ -81,7 +82,8 @@ class YoutubeDLInfoBuilder {
       thumbnailUrl: obj.thumbnail || undefined,
       urls: this.buildAvailableUrl(obj),
       originallyPublishedAt: this.buildOriginallyPublishedAt(obj),
-      ext: obj.ext
+      ext: obj.ext,
+      webpageUrl: obj.webpage_url
     }
   }
 
diff --git a/server/helpers/youtube-dl/youtube-dl-wrapper.ts b/server/helpers/youtube-dl/youtube-dl-wrapper.ts
index 176cf3b69..7cd5e3310 100644
--- a/server/helpers/youtube-dl/youtube-dl-wrapper.ts
+++ b/server/helpers/youtube-dl/youtube-dl-wrapper.ts
@@ -46,6 +46,24 @@ class YoutubeDLWrapper {
     return infoBuilder.getInfo()
   }
 
+  async getInfoForListImport (options: {
+    latestVideosCount?: number
+  }) {
+    const youtubeDL = await YoutubeDLCLI.safeGet()
+
+    const list = await youtubeDL.getListInfo({
+      url: this.url,
+      latestVideosCount: options.latestVideosCount,
+      processOptions
+    })
+
+    return list.map(info => {
+      const infoBuilder = new YoutubeDLInfoBuilder(info)
+
+      return infoBuilder.getInfo()
+    })
+  }
+
   async getSubtitles (): Promise<YoutubeDLSubs> {
     const cwd = CONFIG.STORAGE.TMP_DIR
 
@@ -103,7 +121,7 @@ class YoutubeDLWrapper {
 
           return remove(path)
         })
-        .catch(innerErr => logger.error('Cannot remove file in youtubeDL timeout.', { innerErr, ...lTags() }))
+        .catch(innerErr => logger.error('Cannot remove file in youtubeDL error.', { innerErr, ...lTags() }))
 
       throw err
     }