diff --git a/lib/core/storage/file_metadata_cache.dart b/lib/core/storage/file_metadata_cache.dart
index a3ffad6..4a08e8f 100644
--- a/lib/core/storage/file_metadata_cache.dart
+++ b/lib/core/storage/file_metadata_cache.dart
@@ -16,6 +16,9 @@ class FileMetadataCache {
   static Future<List<CloudFile>?> folderChildren(String? folderID) =>
       _store.folderChildren(folderID);
 
+  static Future<List<CloudFile>?> siblingFiles(String fileID) =>
+      _store.siblingFiles(fileID);
+
   static Future<CloudFile?> file(String fileID) => _store.cachedFile(fileID);
 
   static Future<void> updateFolderChildren(
diff --git a/lib/core/storage/media_library_store.dart b/lib/core/storage/media_library_store.dart
index b2b5763..cae345e 100644
--- a/lib/core/storage/media_library_store.dart
+++ b/lib/core/storage/media_library_store.dart
@@ -293,6 +293,31 @@ class MediaLibraryStore {
     }
   }
 
+  Future<List<CloudFile>?> siblingFiles(String fileID) async {
+    final rows = await (await _db).query(
+      'folder_children',
+      columns: const ['children_json'],
+      where: 'child_ids LIKE ?',
+      whereArgs: ['%"$fileID"%'],
+    );
+    for (final row in rows) {
+      try {
+        final raw = jsonDecode(row['children_json']?.toString() ?? '[]');
+        if (raw is! List) continue;
+        final files = raw
+            .whereType<Map>()
+            .map(
+              (value) => CloudFile.fromJson(Map<String, dynamic>.from(value)),
+            )
+            .toList();
+        if (files.any((file) => file.id == fileID)) return files;
+      } catch (_) {
+        // A stale cache row should not prevent looking at the next folder.
+      }
+    }
+    return null;
+  }
+
   Future<CloudFile?> cachedFile(String fileID) async {
     final rows = await (await _db).rawQuery(
       '''SELECT d.file_json FROM file_index i
diff --git a/lib/providers/file_provider.dart b/lib/providers/file_provider.dart
index 3f77138..99f332d 100644
--- a/lib/providers/file_provider.dart
+++ b/lib/providers/file_provider.dart
@@ -721,6 +721,17 @@ class FileNotifier extends StateNotifier<FileState> {
 
   Future<Uri> playbackUrl(CloudFile file) => _resolveOpenUrl(file);
 
+  Future<List<CloudFile>> siblingFiles(CloudFile file) async {
+    final siblings = await FileMetadataCache.siblingFiles(file.id);
+    if (siblings == null) return [file];
+    return siblings;
+  }
+
+  Future<List<CloudFile>> siblingMediaFiles(CloudFile file) async {
+    final siblings = await siblingFiles(file);
+    return siblings.where((candidate) => candidate.isVideo).toList();
+  }
+
   Future<void> _openRemoteFile(
     CloudFile file, {
     required String preparingMessage,
diff --git a/lib/widgets/media_player_dialog.dart b/lib/widgets/media_player_dialog.dart
index adb982a..00148be 100644
--- a/lib/widgets/media_player_dialog.dart
+++ b/lib/widgets/media_player_dialog.dart
@@ -1,10 +1,12 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:file_picker/file_picker.dart';
 import 'package:media_kit/media_kit.dart';
 import 'package:media_kit_video/media_kit_video.dart';
 import 'package:shadcn_ui/shadcn_ui.dart';
 
 import '../models/cloud_file.dart';
+import '../models/media_library.dart';
 import '../providers/file_provider.dart';
 
 class MediaPlayerDialog extends ConsumerStatefulWidget {
@@ -19,23 +21,44 @@ class MediaPlayerDialog extends ConsumerStatefulWidget {
 class _MediaPlayerDialogState extends ConsumerState<MediaPlayerDialog> {
   late final Player _player;
   late final VideoController _controller;
+  final _videoKey = GlobalKey<VideoState>();
+  late CloudFile _currentFile;
   String? _error;
   bool _loading = true;
+  bool _showEpisodes = false;
+  List<CloudFile> _episodes = const [];
+  List<CloudFile> _subtitleCandidates = const [];
 
   @override
   void initState() {
     super.initState();
     _player = Player();
     _controller = VideoController(_player);
+    _currentFile = widget.file;
     Future.microtask(_open);
   }
 
-  Future<void> _open() async {
+  Future<void> _open([CloudFile? file]) async {
+    if (file != null && mounted) {
+      setState(() {
+        _currentFile = file;
+        _loading = true;
+        _error = null;
+      });
+    }
     try {
       final url = await ref
           .read(fileProvider.notifier)
-          .playbackUrl(widget.file);
+          .playbackUrl(_currentFile);
       await _player.open(Media(url.toString()), play: true);
+      final siblings = await ref
+          .read(fileProvider.notifier)
+          .siblingMediaFiles(_currentFile);
+      _episodes = _matchingEpisodes(_currentFile, siblings);
+      final folderFiles = await ref
+          .read(fileProvider.notifier)
+          .siblingFiles(_currentFile);
+      _subtitleCandidates = _matchingSubtitles(_currentFile, folderFiles);
     } catch (error) {
       _error = error.toString();
     } finally {
@@ -43,6 +66,85 @@ class _MediaPlayerDialogState extends ConsumerState<MediaPlayerDialog> {
     }
   }
 
+  List<CloudFile> _matchingEpisodes(CloudFile file, List<CloudFile> siblings) {
+    final current = ParsedMediaName.parse(file.name);
+    final title = _normalizedTitle(current.title);
+    final values = siblings.where((candidate) {
+      final parsed = ParsedMediaName.parse(candidate.name);
+      return parsed.isEpisode && _normalizedTitle(parsed.title) == title;
+    }).toList();
+    if (!values.any((candidate) => candidate.id == file.id)) values.add(file);
+    values.sort((a, b) {
+      final first = ParsedMediaName.parse(a.name);
+      final second = ParsedMediaName.parse(b.name);
+      final season = (first.season ?? 1).compareTo(second.season ?? 1);
+      if (season != 0) return season;
+      return (first.episode ?? 9999).compareTo(second.episode ?? 9999);
+    });
+    return values;
+  }
+
+  String _normalizedTitle(String title) =>
+      title.toLowerCase().replaceAll(RegExp(r'[^a-z0-9\u4e00-\u9fff]'), '');
+
+  List<CloudFile> _matchingSubtitles(CloudFile file, List<CloudFile> siblings) {
+    const extensions = {'srt', 'ass', 'ssa', 'sub', 'vtt', 'sup'};
+    final title = _normalizedTitle(ParsedMediaName.parse(file.name).title);
+    return siblings.where((candidate) {
+      final extension = candidate.name.split('.').last.toLowerCase();
+      if (!extensions.contains(extension)) return false;
+      final candidateTitle = _normalizedTitle(
+        ParsedMediaName.parse(candidate.name).title,
+      );
+      return candidateTitle.contains(title) || title.contains(candidateTitle);
+    }).toList();
+  }
+
+  Future<void> _searchDirectorySubtitles() async {
+    if (_subtitleCandidates.isEmpty) {
+      await showShadDialog<void>(
+        context: context,
+        builder: (context) => const ShadDialog(
+          title: Text('同目录字幕'),
+          description: Text('缓存的当前目录中没有找到匹配的字幕文件。'),
+        ),
+      );
+      return;
+    }
+    final selected = await showShadDialog<CloudFile>(
+      context: context,
+      builder: (context) => _SubtitlePickerDialog(
+        title: '同目录字幕 (${_subtitleCandidates.length})',
+        subtitles: _subtitleCandidates,
+      ),
+    );
+    if (selected == null || !mounted) return;
+    try {
+      final url = await ref.read(fileProvider.notifier).playbackUrl(selected);
+      await _player.setSubtitleTrack(
+        SubtitleTrack.uri(url.toString(), title: selected.name),
+      );
+    } catch (error) {
+      if (mounted) setState(() => _error = '加载字幕失败：$error');
+    }
+  }
+
+  Future<void> _loadLocalSubtitle() async {
+    final result = await FilePicker.pickFiles(
+      type: FileType.custom,
+      allowedExtensions: const ['srt', 'ass', 'ssa', 'sub', 'vtt', 'sup'],
+      dialogTitle: '选择外挂字幕',
+    );
+    final path = result?.files.single.path;
+    if (path == null) return;
+    await _player.setSubtitleTrack(
+      SubtitleTrack.uri(
+        Uri.file(path).toString(),
+        title: result!.files.single.name,
+      ),
+    );
+  }
+
   @override
   void dispose() {
     _player.dispose();
@@ -54,12 +156,19 @@ class _MediaPlayerDialogState extends ConsumerState<MediaPlayerDialog> {
     final cs = ShadTheme.of(context).colorScheme;
     return ShadDialog(
       title: Text(
-        widget.file.name,
+        _currentFile.name,
         maxLines: 1,
         overflow: TextOverflow.ellipsis,
       ),
       description: const Text('内置播放器'),
       actions: [
+        ShadButton.outline(
+          onPressed: _episodes.length < 2
+              ? null
+              : () => setState(() => _showEpisodes = !_showEpisodes),
+          leading: const Icon(Icons.format_list_bulleted_rounded, size: 16),
+          child: const Text('同目录剧集'),
+        ),
         ShadButton.outline(
           onPressed: () => Navigator.of(context).pop(),
           child: const Text('关闭'),
@@ -68,25 +177,437 @@ class _MediaPlayerDialogState extends ConsumerState<MediaPlayerDialog> {
       child: SizedBox(
         width: 960,
         height: 610,
-        child: ClipRRect(
-          borderRadius: BorderRadius.circular(6),
-          child: ColoredBox(
-            color: Colors.black,
-            child: _loading
-                ? const Center(child: ShadProgress())
-                : _error != null
-                ? Center(
-                    child: Padding(
-                      padding: const EdgeInsets.all(24),
+        child: Row(
+          children: [
+            Expanded(
+              child: ClipRRect(
+                borderRadius: BorderRadius.circular(6),
+                child: ColoredBox(
+                  color: Colors.black,
+                  child: _loading
+                      ? const Center(child: ShadProgress())
+                      : _error != null
+                      ? Center(
+                          child: Padding(
+                            padding: const EdgeInsets.all(24),
+                            child: Text(
+                              '无法播放：$_error',
+                              textAlign: TextAlign.center,
+                              style: TextStyle(color: cs.destructive),
+                            ),
+                          ),
+                        )
+                      : Stack(
+                          children: [
+                            Positioned.fill(
+                              child: Video(
+                                key: _videoKey,
+                                controller: _controller,
+                                controls: NoVideoControls,
+                              ),
+                            ),
+                            Positioned.fill(
+                              child: _MediaPlaybackControls(
+                                player: _player,
+                                controller: _controller,
+                                onSearchSubtitles: _searchDirectorySubtitles,
+                                onLoadLocalSubtitle: _loadLocalSubtitle,
+                                onToggleFullscreen: () =>
+                                    _videoKey.currentState
+                                        ?.toggleFullscreen() ??
+                                    Future.value(),
+                              ),
+                            ),
+                          ],
+                        ),
+                ),
+              ),
+            ),
+            if (_showEpisodes) ...[
+              const SizedBox(width: 10),
+              SizedBox(width: 240, child: _episodeList(cs)),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _episodeList(ShadColorScheme cs) {
+    return DecoratedBox(
+      decoration: BoxDecoration(
+        color: cs.card,
+        borderRadius: BorderRadius.circular(6),
+        border: Border.all(color: cs.border),
+      ),
+      child: ListView.builder(
+        itemCount: _episodes.length,
+        itemBuilder: (context, index) {
+          final episode = _episodes[index];
+          final parsed = ParsedMediaName.parse(episode.name);
+          final selected = episode.id == _currentFile.id;
+          return Material(
+            color: Colors.transparent,
+            child: InkWell(
+              onTap: selected ? null : () => _open(episode),
+              child: Container(
+                padding: const EdgeInsets.symmetric(
+                  horizontal: 10,
+                  vertical: 9,
+                ),
+                color: selected ? cs.primary.withValues(alpha: 0.10) : null,
+                child: Row(
+                  children: [
+                    SizedBox(
+                      width: 42,
                       child: Text(
-                        '无法播放：$_error',
-                        textAlign: TextAlign.center,
-                        style: TextStyle(color: cs.destructive),
+                        'S${(parsed.season ?? 1).toString().padLeft(2, '0')}E${(parsed.episode ?? 0).toString().padLeft(2, '0')}',
+                        style: TextStyle(fontSize: 11, color: cs.primary),
                       ),
                     ),
-                  )
-                : Video(controller: _controller),
+                    Expanded(
+                      child: Text(
+                        episode.name,
+                        maxLines: 2,
+                        overflow: TextOverflow.ellipsis,
+                        style: TextStyle(
+                          fontSize: 11,
+                          fontWeight: selected
+                              ? FontWeight.w700
+                              : FontWeight.w500,
+                          color: cs.foreground,
+                        ),
+                      ),
+                    ),
+                  ],
+                ),
+              ),
+            ),
+          );
+        },
+      ),
+    );
+  }
+}
+
+class _MediaPlaybackControls extends StatefulWidget {
+  final Player player;
+  final VideoController controller;
+  final Future<void> Function() onSearchSubtitles;
+  final Future<void> Function() onLoadLocalSubtitle;
+  final Future<void> Function() onToggleFullscreen;
+
+  const _MediaPlaybackControls({
+    required this.player,
+    required this.controller,
+    required this.onSearchSubtitles,
+    required this.onLoadLocalSubtitle,
+    required this.onToggleFullscreen,
+  });
+
+  @override
+  State<_MediaPlaybackControls> createState() => _MediaPlaybackControlsState();
+}
+
+class _MediaPlaybackControlsState extends State<_MediaPlaybackControls> {
+  double? _scrubbingValue;
+
+  Future<void> _seekBy(int seconds) async {
+    final position = widget.player.state.position + Duration(seconds: seconds);
+    final duration = widget.player.state.duration;
+    final target = position < Duration.zero
+        ? Duration.zero
+        : (duration > Duration.zero && position > duration
+              ? duration
+              : position);
+    await widget.player.seek(target);
+  }
+
+  Future<void> _selectRate() async {
+    final rate = await showShadDialog<double>(
+      context: context,
+      builder: (context) => ShadDialog(
+        title: const Text('播放速度'),
+        child: Wrap(
+          spacing: 8,
+          runSpacing: 8,
+          children: [
+            for (final value in const [0.5, 0.75, 1.0, 1.25, 1.5, 2.0])
+              ShadButton.outline(
+                onPressed: () => Navigator.of(context).pop(value),
+                child: Text('${value}x'),
+              ),
+          ],
+        ),
+      ),
+    );
+    if (rate != null) await widget.player.setRate(rate);
+  }
+
+  Future<void> _selectAudio() async {
+    final tracks = widget.player.state.tracks.audio;
+    final track = await showShadDialog<AudioTrack>(
+      context: context,
+      builder: (context) => _TrackPickerDialog<AudioTrack>(
+        title: '选择音轨',
+        tracks: tracks,
+        selectedID: widget.player.state.track.audio.id,
+        label: _trackLabel,
+        id: (track) => track.id,
+      ),
+    );
+    if (track != null) await widget.player.setAudioTrack(track);
+  }
+
+  Future<void> _selectSubtitle() async {
+    final tracks = widget.player.state.tracks.subtitle;
+    final track = await showShadDialog<SubtitleTrack>(
+      context: context,
+      builder: (context) => _TrackPickerDialog<SubtitleTrack>(
+        title: '选择字幕',
+        tracks: tracks,
+        selectedID: widget.player.state.track.subtitle.id,
+        label: _trackLabel,
+        id: (track) => track.id,
+      ),
+    );
+    if (track != null) await widget.player.setSubtitleTrack(track);
+  }
+
+  String _trackLabel(dynamic track) {
+    if (track.id == 'no') return '关闭';
+    if (track.id == 'auto') return '自动';
+    final values = [
+      track.title,
+      track.language,
+      track.codec,
+    ].whereType<String>().where((value) => value.isNotEmpty).toSet();
+    return values.isEmpty ? '轨道 ${track.id}' : values.join(' · ');
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return StreamBuilder<Duration>(
+      stream: widget.player.stream.position,
+      initialData: widget.player.state.position,
+      builder: (context, snapshot) {
+        final position = snapshot.data ?? Duration.zero;
+        final duration = widget.player.state.duration;
+        final max = duration.inMilliseconds.toDouble();
+        final current = _scrubbingValue ?? position.inMilliseconds.toDouble();
+        final value = max <= 0 ? 0.0 : current.clamp(0.0, max);
+        final cs = ShadTheme.of(context).colorScheme;
+        return GestureDetector(
+          behavior: HitTestBehavior.translucent,
+          onDoubleTap: widget.onToggleFullscreen,
+          onTap: () => widget.player.playOrPause(),
+          child: Stack(
+            children: [
+              Positioned(
+                left: 0,
+                right: 0,
+                bottom: 0,
+                child: Container(
+                  padding: const EdgeInsets.fromLTRB(12, 28, 12, 10),
+                  decoration: const BoxDecoration(
+                    gradient: LinearGradient(
+                      begin: Alignment.topCenter,
+                      end: Alignment.bottomCenter,
+                      colors: [Colors.transparent, Color(0xE6000000)],
+                    ),
+                  ),
+                  child: Column(
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      SliderTheme(
+                        data: SliderTheme.of(context).copyWith(
+                          trackHeight: 3,
+                          thumbShape: const RoundSliderThumbShape(
+                            enabledThumbRadius: 6,
+                          ),
+                          activeTrackColor: cs.primary,
+                          inactiveTrackColor: Colors.white.withValues(
+                            alpha: 0.28,
+                          ),
+                          thumbColor: cs.primary,
+                        ),
+                        child: Slider(
+                          value: value,
+                          min: 0,
+                          max: max <= 0 ? 1 : max,
+                          onChangeStart: max <= 0
+                              ? null
+                              : (next) =>
+                                    setState(() => _scrubbingValue = next),
+                          onChanged: max <= 0
+                              ? null
+                              : (next) =>
+                                    setState(() => _scrubbingValue = next),
+                          onChangeEnd: max <= 0
+                              ? null
+                              : (next) async {
+                                  await widget.player.seek(
+                                    Duration(milliseconds: next.round()),
+                                  );
+                                  if (mounted) {
+                                    setState(() => _scrubbingValue = null);
+                                  }
+                                },
+                        ),
+                      ),
+                      SingleChildScrollView(
+                        scrollDirection: Axis.horizontal,
+                        child: Row(
+                          mainAxisSize: MainAxisSize.min,
+                          children: [
+                            _controlButton(
+                              widget.player.state.playing
+                                  ? Icons.pause_rounded
+                                  : Icons.play_arrow_rounded,
+                              widget.player.playOrPause,
+                            ),
+                            _controlButton(
+                              Icons.replay_10_rounded,
+                              () => _seekBy(-10),
+                            ),
+                            _controlButton(
+                              Icons.forward_10_rounded,
+                              () => _seekBy(10),
+                            ),
+                            const SizedBox(width: 6),
+                            Text(
+                              '${_formatTime(position)} / ${_formatTime(duration)}',
+                              style: const TextStyle(
+                                color: Colors.white,
+                                fontSize: 12,
+                              ),
+                            ),
+                            const SizedBox(width: 20),
+                            _menuButton(
+                              '${widget.player.state.rate.toStringAsFixed(widget.player.state.rate % 1 == 0 ? 0 : 2)}x',
+                              _selectRate,
+                            ),
+                            _menuButton('音轨', _selectAudio),
+                            _menuButton('字幕', _selectSubtitle),
+                            _menuButton('搜字幕', widget.onSearchSubtitles),
+                            _menuButton('加载字幕', widget.onLoadLocalSubtitle),
+                            _controlButton(
+                              Icons.fullscreen_rounded,
+                              widget.onToggleFullscreen,
+                            ),
+                          ],
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+            ],
           ),
+        );
+      },
+    );
+  }
+
+  Widget _controlButton(IconData icon, Future<void> Function() onPressed) {
+    return IconButton(
+      tooltip: '',
+      onPressed: onPressed,
+      icon: Icon(icon, color: Colors.white, size: 23),
+    );
+  }
+
+  Widget _menuButton(String label, Future<void> Function() onPressed) {
+    return TextButton(
+      onPressed: onPressed,
+      style: TextButton.styleFrom(
+        foregroundColor: Colors.white,
+        minimumSize: const Size(44, 36),
+        padding: const EdgeInsets.symmetric(horizontal: 6),
+      ),
+      child: Text(label, style: const TextStyle(fontSize: 12)),
+    );
+  }
+
+  String _formatTime(Duration value) {
+    final hours = value.inHours;
+    final minutes = value.inMinutes.remainder(60).toString().padLeft(2, '0');
+    final seconds = value.inSeconds.remainder(60).toString().padLeft(2, '0');
+    return hours > 0 ? '$hours:$minutes:$seconds' : '$minutes:$seconds';
+  }
+}
+
+class _TrackPickerDialog<T> extends StatelessWidget {
+  final String title;
+  final List<T> tracks;
+  final String selectedID;
+  final String Function(T track) label;
+  final String Function(T track) id;
+
+  const _TrackPickerDialog({
+    required this.title,
+    required this.tracks,
+    required this.selectedID,
+    required this.label,
+    required this.id,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    final cs = ShadTheme.of(context).colorScheme;
+    return ShadDialog(
+      title: Text(title),
+      child: SizedBox(
+        width: 360,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            for (final track in tracks)
+              ListTile(
+                onTap: () => Navigator.of(context).pop(track),
+                title: Text(label(track)),
+                trailing: id(track) == selectedID
+                    ? Icon(Icons.check_rounded, color: cs.primary)
+                    : null,
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _SubtitlePickerDialog extends StatelessWidget {
+  final String title;
+  final List<CloudFile> subtitles;
+
+  const _SubtitlePickerDialog({required this.title, required this.subtitles});
+
+  @override
+  Widget build(BuildContext context) {
+    final cs = ShadTheme.of(context).colorScheme;
+    return ShadDialog(
+      title: Text(title),
+      description: const Text('从当前视频同目录的缓存文件中匹配'),
+      child: SizedBox(
+        width: 520,
+        height: 360,
+        child: ListView.separated(
+          itemCount: subtitles.length,
+          separatorBuilder: (_, _) => Divider(height: 1, color: cs.border),
+          itemBuilder: (context, index) {
+            final subtitle = subtitles[index];
+            return ListTile(
+              onTap: () => Navigator.of(context).pop(subtitle),
+              leading: Icon(Icons.closed_caption_rounded, color: cs.primary),
+              title: Text(
+                subtitle.name,
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+              ),
+              subtitle: Text(subtitle.formattedSize),
+            );
+          },
         ),
       ),
     );