Update README.md

README.md

@@ -6,39 +6,146 @@ task_categories:
 - text-generation
 - video-text-to-text
 language:
+- en
 - es
 - fr
 - ko
 - ja
-- en
 tags:
 - music
 - art
-pretty_name: mavl
+- multimodal
+- lyrics
+- animation
+pretty_name: MAVL
 size_categories:
 - n<1K
 ---
 ---
 
-# MAVL
+# MAVL: Multilingual Audio-Video Lyrics Dataset for Animated Song Translation
 
 ## Dataset Description
-This dataset contains a collection of YouTube URLs corresponding to songs from animations. It may also include song titles, artist, timestamps for lyrics. **Crucially, this dataset does not contain the actual audio, video, or lyric files.**
+
+This dataset contains a collection of YouTube URLs corresponding to songs from animated musicals. It includes meticulously aligned lyrics (English, Spanish, French, Korean, and Japanese) with corresponding timestamps, song titles, and artist information. MAVL is designed as the first multilingual, multimodal benchmark for singable lyrics translation.
+
+**Crucially, this dataset does not contain the actual audio, video, or full lyric text files directly due to copyright considerations.** Instead, it provides structured metadata and URLs, along with a compact representation of lyrics (e.g., first letters of words, first/last words of lines) and their syllable counts, and precise timestamps. This allows for the reconstruction of original lyrics and the download of associated multimedia content via provided scripts.
+
+## Dataset Structure
+
+The dataset is provided in a JSON format. Each entry represents a song and contains:
+
+  * **Song Title:** The name of the animated song.
+  * **`lyrics`**: A nested structure containing lyric lines for each language (`US_og` for original English, `ES` for Spanish, `FR` for French, `KO` for Korean, `JA` for Japanese). Each line includes:
+      * `text`: A compact representation of the original lyric line (e.g., `["Tsimp", "There's", "pants"]` for "Squirrels in my pants"). This is designed to allow for the reconstruction of the full lyric text using external resources.
+      * `line_number`: The sequential number of the lyric line.
+      * `syllable_count`: The syllable count of the lyric line.
+      * `character_count`: The character count of the lyric line.
+      * `start`: Start timestamp of the lyric line in the audio/video.
+      * `end`: End timestamp of the lyric line in the audio/video.
+  * **`youtube_url`**: Dictionary containing YouTube URLs for the original and dubbed versions in different languages.
+  * **`lyrics_url`**: Dictionary containing URLs to external websites where the full lyrics can be found for each language.
+  * **`video`**: Boolean flags indicating the availability of video for each language.
+
+**Example Data Snippet (Simplified for clarity):**
+
+```json
+{
+  "2_guyz_n_the_parque_s.i.m.p._(squirrels_in_my_pants)": {
+    "lyrics": [
+      [
+        {
+          "US_og": {
+            "text": [["Tsimp", "There's", "pants"]],
+            "line_number": 0,
+            "syllable_count": 6,
+            "start": 21.054856,
+            "end": 22.274856
+          },
+          "ES": {
+            "text": [["Ectaeep", "Esa", "pantalón"]],
+            "line_number": 0,
+            "syllable_count": 14,
+            "start": 13.920436,
+            "end": 15.600436
+          }
+          // ... other languages and lines
+        }
+      ]
+    ],
+    "youtube_url": {
+      "US": "https://www.youtube.com/watch?v=5WzswZXTMZQ",
+      "ES": "https://www.youtube.com/watch?v=_z9JdEohNJY"
+      // ... other languages
+    },
+    "lyrics_url": {
+      "US": "https://genius.com/Phineas-and-ferb-simp-squirrels-in-my-pants-lyrics",
+      "ES": "https://lyricstranslate.com/en/phineas-and-ferb-ost-apd-ardillas-por-doquier-simp-squirrels-lyrics.html"
+      // ... other languages
+    },
+    "video": {
+      "US": true,
+      "ES": true
+      // ... other languages
+    }
+  }
+}
+```
+
+## Dataset Statistics
+
+MAVL comprises data for **228 songs** across five languages: English, Spanish, French, Japanese, and Korean.
+
+  * **English:** 228 songs, 1,923 sections, 6,623 lines
+  * **Spanish:** 201 songs, 181 sections, 1,595 lines, 5,739 total lines
+  * **French:** 158 songs, 143 sections, 1,421 lines, 4,821 total lines
+  * **Japanese:** 138 songs, 114 sections, 1,264 lines, 4,280 total lines
+  * **Korean:** 133 songs, 117 sections, 1,138 lines, 3,974 total lines
 
 ## Intended Uses & Limitations
-This dataset is intended solely for **non-commercial research purposes**, such as lyrics translation, music-lyrics alignment, and music information retrieval.
+
+This dataset is intended solely for **non-commercial research purposes**, such as lyrics translation, music-lyrics alignment, music information retrieval, and multimodal language model development.
 
 **IMPORTANT LIMITATIONS:**
-*   Users must independently ensure their use of the content linked via URLs complies with copyright law and YouTube's Terms of Service.
-*   The dataset provides only URLs and potentially research-generated metadata/annotations; it does not grant any rights to the underlying copyrighted content.
-*   YouTube links may become invalid over time.
+
+  * Users must independently ensure their use of the content linked via URLs complies with copyright law and YouTube's Terms of Service.
+  * The dataset provides only URLs and research-generated metadata/annotations; it does not grant any rights to the underlying copyrighted content.
+  * YouTube links and external lyrics links may become invalid over time.
+  * The dataset primarily focuses on animated musicals and may not generalize to all musical genres or styles.
+  * The current lyric representation requires external processing to reconstruct full lyric text.
+
+## Data Collection Methodology
+
+The MAVL dataset was collected through a multi-step web crawling and human alignment process:
+
+1.  **Multilingual Lyrics Collection:** Metadata (song titles, artists) for English animated film music was gathered from last.fm. Original English lyrics were retrieved from Genius. Non-English lyrics corresponding to official dubbed versions were collected from platforms like lyricstranslate.com, ensuring they represent singable interpretations.
+2.  **Lyrics Human Alignment:** A crucial step involved cross-referencing original English audio/video with non-English candidate lyrics and their official dubbed audio/video to rigorously verify authenticity and exclude non-official or non-singable versions.
+3.  **Audio-Video-Lyrics Alignment:** The `stable-ts` tool (based on Whisper model) was used to generate precise timestamps, aligning audio, video, and lyrics to extract synchronized multimodal information.
+
+For more detailed information on the data collection pipeline, please refer to Section 3.1 and Appendix D of our accompanying paper.
 
 ## License
 
 This dataset is distributed under a **Custom License** (see the `LICENSE` file for full details). Key points include:
 
-*   **Usage:** Strictly for **non-commercial research purposes only**.
-*   **Underlying Content:** The dataset **does not grant any rights** to the copyrighted songs/videos linked by the URLs. Users are responsible for respecting the original copyrights.
-*   **Dataset Compilation & Annotations:** Permission is granted to use, copy, and modify the URL compilation and any original annotations for non-commercial research, provided attribution is given to the dataset creators ([Woohyun Cho/MIRLAB]) and the license terms are followed.
-*   **NO WARRANTY:** The dataset is provided "AS IS" without warranty. Links may be broken.
-*   **Liability:** The dataset creators are not liable for any issues arising from the use of the dataset or the linked content.
+  * **Usage:** Strictly for **non-commercial research purposes only**.
+  * **Underlying Content:** The dataset **does not grant any rights** to the copyrighted songs/videos linked by the URLs. Users are responsible for respecting the original copyrights.
+  * **Dataset Compilation & Annotations:** Permission is granted to use, copy, and modify the URL compilation and any original annotations for non-commercial research, provided attribution is given to the dataset creators ([Woohyun Cho/MIRLAB]) and the license terms are followed.
+  * **NO WARRANTY:** The dataset is provided "AS IS" without warranty. Links may be broken.
+  * **Liability:** The dataset creators are not liable for any issues arising from the use of the dataset or the linked content.
+
+## Citation
+
+If you use the MAVL dataset in your research, please cite our paper:
+
+```bibtex
+@misc{cho2025mavlmultilingualaudiovideolyrics,
+      title={MAVL: A Multilingual Audio-Video Lyrics Dataset for Animated Song Translation}, 
+      author={Woohyun Cho and Youngmin Kim and Sunghyun Lee and Youngjae Yu},
+      year={2025},
+      eprint={2505.18614},
+      archivePrefix={arXiv},
+      primaryClass={cs.CL},
+      url={https://arxiv.org/abs/2505.18614}, 
+}
+```