ytmusic-to-spotify-sync 0.5.0

Automatically sync your YouTube Music playlists to Spotify with smart track matching, diff-based updates, and metadata enrichment

ytmusic-to-spotify-sync

Automatically sync your YouTube Music playlists to Spotify — with smart track matching, diff-based updates, and full metadata enrichment.

---

Why?

YouTube Music and Spotify don't talk to each other. If you curate playlists on one platform you either listen on two platforms or manually rebuild them. This tool automates the bridge: it reads your YT Music playlist, finds the matching tracks on Spotify, and keeps the two in sync. Only changes since the last run are processed — no full re-scan, no duplicates.

---

Features

Feature	Description
Live YT Music API	Fetches your playlist directly via ytmusicapi — no manual export required
3-pass smart matching	ISRC exact match → normalised title + artist → fuzzy fallback with duration validation
Diff-based sync	JSON snapshots track playlist state; only added/removed tracks are touched each run
Spotify playlist management	Adds new matches and removes deleted tracks automatically
Audio features enrichment	Annotates every track with danceability, energy, valence, tempo, key, and 7 more
Metadata enrichment	Captures ISRC, explicit flag, and album release date from Spotify
CSV fallback	Works from a CSV export if you prefer not to use the live API
Resume after rate limits	Match progress is cached every 25 tracks; re-running continues where you left off
Quota-friendly --limit	Cap new tracks per run to stay within Spotify's daily API quota
Interactive menu	Run without arguments for a guided step-by-step experience
Dry-run mode	Preview every change before it is applied
Unmatched tracking	Saves failed matches to data/unmatched.csv for manual review or later retry

---

Quick Start

1. Install

git clone https://github.com/davidmalko87/ytmusic-to-spotify-sync.git
cd ytmusic-to-spotify-sync
pip install -r requirements.txt

2. Configure

cp .env.example .env

Edit .env with your credentials:

Variable	Where to get it
SPOTIPY_CLIENT_ID	Spotify Developer Dashboard → Create App
SPOTIPY_CLIENT_SECRET	Same app page, under "Settings"
SPOTIPY_REDIRECT_URI	Set to http://127.0.0.1:8888/callback and add it in the Spotify app settings
SPOTIFY_PLAYLIST_ID	Create a playlist on Spotify; the ID is the last segment of its URL
YTMUSIC_PLAYLIST_ID	From your YT Music playlist URL: ...playlist?list=<ID>

3. Authenticate YT Music

python playlist_sync.py setup-ytmusic

One-time setup — paste request headers from browser DevTools. Auth is valid for ~2 years.

How to get the request headers

1. Open music.youtube.com in your browser (logged in)
2. Press F12 to open DevTools
3. Go to the Network tab and type /browse in the filter bar
4. Click on any playlist or page in YT Music to trigger a request
5. Find a POST request to browse with status 200
6. Click it → Headers tab → Request Headers
7. Copy all the request headers and paste them into the terminal when prompted

Both the Chrome two-line format and the standard key: value format are accepted.

4. Run your first sync

# Preview what would happen (no changes made)
python playlist_sync.py sync --dry-run

# Run the actual sync
python playlist_sync.py sync

---

Configuration reference

All options are set via environment variables (.env file or shell environment).

Variable	Required	Default	Description
SPOTIPY_CLIENT_ID	Yes	—	Spotify app client ID
SPOTIPY_CLIENT_SECRET	Yes	—	Spotify app client secret
SPOTIPY_REDIRECT_URI	No	http://127.0.0.1:8888/callback	OAuth redirect URI
SPOTIFY_PLAYLIST_ID	Yes	—	ID of the target Spotify playlist
YTMUSIC_PLAYLIST_ID	Yes*	—	ID of the source YT Music playlist (*not needed with --from-csv)
YTMUSIC_AUTH_FILE	No	browser.json	Path to the YT Music auth JSON file
SOURCE_CSV	No	—	Path to a CSV export to use instead of the live API

---

Usage

Interactive mode

python playlist_sync.py

==================================================
  Playlist Sync: YT Music -> Spotify
==================================================

  [1] Setup YT Music auth
  [2] Import from CSV
  [3] Snapshot YT Music playlist
  [4] Show diff (changes)
  [5] Full sync to Spotify
  [6] Sync from CSV file
  [7] Retry unmatched tracks
  [8] Show status
  [0] Exit

Command-line mode

python playlist_sync.py setup-ytmusic          # One-time browser auth setup
python playlist_sync.py snapshot               # Save current playlist state
python playlist_sync.py diff                   # Show changes since last snapshot
python playlist_sync.py sync                   # Full sync (YT Music API → Spotify)
python playlist_sync.py sync --from-csv        # Sync from CSV export instead
python playlist_sync.py sync --dry-run         # Preview without making changes
python playlist_sync.py sync --limit 50        # Match at most 50 new tracks this run
python playlist_sync.py retry-unmatched        # Retry previously failed matches
python playlist_sync.py status                 # Show sync statistics

All commands accept --verbose / -v for debug-level log output.

---

How it works

YT Music Playlist ──(API or CSV)──> Current State
                                        │
                                    Diff Engine  ←── Previous Snapshot
                                    ╱         ╲
                            Added Tracks   Removed Tracks
                                │               │
                            Matcher         Spotify Remove
                            ╱       ╲
                    Matched     Unmatched
                        │           │
                Spotify Add    unmatched.csv
                        │
                    Enricher  (audio features + metadata)
                        │
              playlist_enriched.csv

Track matching strategy

The matcher runs three passes in order of reliability:

1. ISRC match — searches Spotify by isrc: query; highest accuracy, ~95 % confidence
2. Title + Artist — normalised search (feat. stripped, HTML decoded), validated by duration ± 5 s
3. Relaxed — title-only search with fuzzy artist matching; catches live versions and alternate releases

Unmatched tracks are written to data/unmatched.csv and can be retried later with retry-unmatched.

---

Project structure

ytmusic-to-spotify-sync/
├── playlist_sync.py           # Entry point
├── playlist_sync/
│   ├── __init__.py            # Package version (canonical version source)
│   ├── cli.py                 # Commands and interactive menu
│   ├── config.py              # Environment variables and paths
│   ├── models.py              # Track, MatchResult, DiffResult dataclasses
│   ├── utils.py               # Text normalisation and logging setup
│   ├── csv_manager.py         # CSV I/O (BOM-aware)
│   ├── ytmusic_client.py      # YT Music API wrapper
│   ├── spotify_client.py      # Spotify API wrapper with rate-limit handling
│   ├── matcher.py             # 3-pass track matching engine
│   ├── differ.py              # Snapshot diff engine
│   └── enricher.py            # Metadata and audio feature enrichment
├── data/                      # Created at runtime
│   ├── snapshots/             # JSON snapshots (latest.json + timestamped)
│   ├── playlist_enriched.csv  # Full enriched output
│   └── unmatched.csv          # Tracks that could not be matched
├── .env.example               # Credential template
├── requirements.txt
├── CHANGELOG.md
├── CONTRIBUTING.md
└── SETUP.md                   # Detailed step-by-step setup guide

---

Output: enriched CSV

The sync produces data/playlist_enriched.csv with 32 columns:

Column	Source
title, artist, album	YT Music
trackId, url, duration	YT Music
spotify_uri, spotify_url	Spotify match
isrc, explicit, album_release_date	Spotify metadata
danceability, energy, valence	Spotify audio features
tempo, key, mode, loudness	Spotify audio features
speechiness, acousticness	Spotify audio features
instrumentalness, liveness, time_signature	Spotify audio features
match_method, match_confidence	Matching diagnostics
first_synced, last_synced	Sync timestamps

Audio features reference

Feature	Range	Meaning
danceability	0.0 – 1.0	Suitability for dancing (tempo, rhythm, beat strength)
energy	0.0 – 1.0	Intensity and activity (loud, fast, noisy = high)
valence	0.0 – 1.0	Musical positiveness (happy = high, sad/angry = low)
tempo	BPM	Estimated beats per minute
speechiness	0.0 – 1.0	Presence of spoken words
acousticness	0.0 – 1.0	Confidence the track is acoustic
instrumentalness	0.0 – 1.0	Likelihood of no vocal content
liveness	0.0 – 1.0	Presence of a live audience
loudness	dB	Overall loudness (typically −60 to 0)
key	0 – 11	Pitch class (0 = C, 1 = C♯, …, 11 = B)
mode	0 or 1	Modality (0 = minor, 1 = major)
time_signature	int	Estimated beats per bar

---

Known limitations

• Spotify Developer Mode limits search to 10 results per request and imposes a daily quota. Use --limit N to spread large initial syncs over multiple days.
• YT Music-exclusive tracks (unreleased, region-locked, user uploads) will not have Spotify matches — these are tracked in data/unmatched.csv.
• ytmusicapi OAuth is broken in v1.11.x — the tool uses browser-based authentication instead (stable, valid ~2 years).

---

Requirements

• Python 3.10+
• Spotify Developer account (free)
• YouTube Music account

pandas>=2.0.0
spotipy>=2.24.0
ytmusicapi>=1.8.0
python-dotenv>=1.0.0
tqdm>=4.66.0

---

Changelog & Contributing

• CHANGELOG.md — full version history
• CONTRIBUTING.md — development setup, semver policy, two-file update rule

---

License

MIT