Ranking improvements:
- Wider candidate pool (4x limit) with ±12pt score perturbation so
same-score videos shuffle differently each load
- Recent channel engagement signal: channels watched in past 30 days
get a +4pts/watch boost
- Bail penalty: -25pts for videos started but abandoned before 20%
- Impression penalty: -3pts per prior feed appearance (capped at 10),
so repeatedly-skipped videos sink naturally
- rn cap raised to 5 for more candidates; Python-side sampling picks top limit
Feed UX:
- Reshuffle button now available on For You (ranked) mode, not just Explore
- shuffleKey now always included in query key (not just random mode)
- Ranked mode staleTime reduced from 10min to 90s
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- search_youtube, fetch_trending, fetch_featured_channels now use _meta_run
- Replaced ThreadPoolExecutor(4) parallel searches with sequential loop
- Replaced ThreadPoolExecutor(3) parallel featured-channel fetches with sequential
- _fetch_and_index_channel passes polite=True to fetch_channel/video_metadata
Discovery was firing 4+ simultaneous yt-dlp processes, each with cookies,
which is what invalidated the session.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The refresh endpoint was passing the request's db session to the
background task, which is closed before the task runs — silently
doing nothing on every refresh.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
fetch_video_metadata and fetch_channel_metadata now take polite=True for
background tasks (enforces 5s+ gap via global lock) while user-facing
calls (watch page, follow channel, download) use polite=False and run
immediately.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
All fetch_video_metadata / fetch_channel_metadata / fetch_channel_playlists
/ fetch_available_subs calls now go through _meta_run which enforces a
minimum 5s gap (+ 0.5-2.5s random jitter) across all concurrent tasks.
Per-task sleep loops removed since the global lock serializes everything.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Top 10 shown as variable-size tag cloud, all tags below as a
two-column bar chart. Backend limit raised from 20 to 60.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Writes a Kodi/Jellyfin-compatible .nfo XML file next to each .mp4 on
download completion, deletes it when the download record is removed, and
exposes POST /api/downloads/nfo/generate to backfill NFOs for existing
downloads. Frontend adds a "Generate NFO" button in the Downloads header.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Popular fetch phase 2: sequential with 2s delay between requests (was 3 parallel workers)
- Reduced from 200 to 100 videos per popular fetch run
- DB writes happen after each video instead of all at end (no data loss on interrupt)
- _enrich_missing_task: delay increased 0.5s → 2s between requests
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Stats:
- Peak watching hours chart (24-bar) from last_watched_at timestamps
RSS:
- GET /api/channels/rss — last 100 videos from followed channels as RSS 2.0
- RSS link in Following > Health tab
Channel health:
- New Health tab in Following groups channels into Active / Slow / Dormant / Dead
based on days since last upload
Bulk video download:
- Select mode on Channel page (Videos tab) with checkboxes
- Sticky bottom bar shows count + Download button
- Queues a download for each selected video
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Offline banner in nav when backend is unreachable (network error, not 4xx)
- GET /channels/{id}/random — picks random unwatched video, navigates to watch
- GET /channels/{id}/in-progress — videos with >30s progress, not yet watched
- Channel page: 'Surprise me' button (desktop + mobile) navigates to random video
- Channel page: 'Continue watching' row above video list when in-progress videos exist
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Phase 1 (crawling) now creates the task immediately so Downloads shows it
- Phase label updates to 'Enriching view counts' when phase 2 starts
- Nav bar DownloadIndicator also polls /channels/tasks and shows spinning
indicator + progress % for background tasks (not just file downloads)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Track active background tasks in an in-memory dict with a lock
- Expose GET /api/channels/tasks returning running task list
- _fetch_popular_task updates done count as each video fetch completes
- Downloads page polls /tasks every 2s and shows progress bars
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
8 simultaneous yt-dlp processes hitting video pages looks like a bot
attack and causes YouTube to nuke the session cookies. Drop to:
- Popular fetch view_count enrichment: 8→3 workers
- Discovery search: 8→4 workers
- Graph signal (featured channels): 8→3 workers
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Previously ORDER BY published_at DESC meant only the newest 200 videos
ever got view counts. Now ORDER BY RANDOM() spreads the 200 slots across
the full channel history — videos without a count are still prioritised,
but among those they're drawn randomly. Each run of Fetch Popular covers
a different slice, converging toward full coverage over time.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Phase 1: crawl the full channel with flat-playlist to store any videos
not yet in DB (fast, no individual requests).
Phase 2: fetch real view_count for up to 200 channel videos in parallel
(8 workers), prioritising those missing a count.
Popular tab sorts all channel videos by view_count DESC NULLS LAST.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
yt-dlp's own test suite marks channel sort as 'Query for sorting no
longer works' — YouTube blocked it. New approach: fetch view_count for
up to 200 indexed videos in parallel (8 workers, prioritising those
missing counts), then Popular tab sorts by view_count DESC WHERE
view_count IS NOT NULL. Accurate for any channel once enrichment runs.
Frontend refetch wait raised to 60s to cover ~200 parallel fetches.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The outer try had no except — any exception (e.g. table missing) killed
the whole background task with no error visible to the user. Now:
- CREATE TABLE IF NOT EXISTS inline so the task works even if the
startup migration hasn't run (no server restart required)
- Wrap DELETE in its own try/except
- Catch and print outer exceptions so failures appear in server logs
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
flat-playlist mode returns timestamp=null for most playlist entries so
published_at is missing after the initial index. Now kicks off
_enrich_missing_task (scoped to the playlist size) as a daemon thread
immediately after indexing commits, filling in dates and view counts
in the background via individual video fetches.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Previously the task waited for all 30 parallel metadata fetches before
writing anything to the DB (~30s). Now Phase 1 (flat-playlist IDs +
basic info) commits to channel_popular_videos immediately (~5s), so the
tab populates fast. Phase 2 (view_count + dates) runs in a daemon thread
while the user is already browsing.
Also: catch table-not-found errors in the sort=popular query so a cold
server returns [] instead of 500. Frontend refetch wait 35s→8s to match
the faster Phase 1 commit time.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
When yt-dlp returns no thumbnail for a playlist entry, fetch the
playlist's first video (max_videos=1) and derive a stable thumbnail
URL from its video ID. Applied during both the initial fetch and
on index (already done on index in previous commit).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
_stable_thumbnail expects a video ID but was being passed a playlist ID
(PLxxx), producing a broken URL. Now picks the best thumbnail from
yt-dlp's thumbnails array, falling back to the singular thumbnail field.
Also backfills playlist.thumbnail_url from the first video when indexing
a playlist that still has no thumbnail.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Add channel_popular_videos table (channel_id, video_id, rank).
_fetch_popular_task clears and rewrites this table after each fetch.
GET /channels/{id}/videos?sort=popular now JOINs this table and orders
by rank instead of view_count, so the tab shows exactly the videos
YouTube returned in popularity order — nothing more.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Popular fetch now does a two-phase approach: fast flat-playlist to get
IDs in popularity order, then parallel full metadata fetch (8 workers)
to get real view_count and published_at for each video. Previously
flat-playlist mode returned timestamp/view_count as null.
Enrich task now also backfills published_at and view_count (not just
description). Startup limit 3→50, enrichment sleep 2s→0.5s.
Raise all thread pool sizes to match 8-core machine:
- Discovery search: 5→8 workers
- Graph signal: 4→8 workers
- Popular fetch: 5→8 workers
- Download semaphore default 3→6, cap 10→16
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- New playlists router: fetch channel playlists from YouTube, index
playlist videos, browse by playlist with pagination
- Playlist model gets video_ids column to store ordered video list
- Register playlists router in main.py with DB migration
- Add Playlists tab to Channel page: grid of playlist cards, click to
browse videos, index/re-index per playlist
- Fix explore older videos skipping all entries without published_at;
flat-playlist entries for older videos rarely include timestamp data
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- YouTube sort=p fetch: indexes top 100 most-viewed videos from a channel,
storing view_count in the DB
- Popular tab on channel page shows videos sorted by view_count DESC
- Videos/Popular tab switcher with context-appropriate fetch buttons
- Expose view_count in VideoOut; add 'popular' sort to channel videos endpoint
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Channel page:
- "Explore older videos" button fetches 100 videos at a time further back
in the channel history using yt-dlp --playlist-start/--playlist-end
- "Fetch entire history" still available for full crawl
- Backend: /channels/{id}/explore?page=N endpoint + playlist offset support
in fetch_channel_metadata(start_video=N)
Home feed:
- New "Rediscover" mode: older unwatched videos (90+ days old) from
followed channels, randomly sampled then re-ranked by tag affinity
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Search bar filters indexed videos server-side; "Search YouTube" button
triggers a deep channel search and indexes matching results
- Server-side sort (newest/oldest/A-Z/unwatched) + infinite scroll (60/page)
- "Fetch recent" indexes last 30, "Fetch all" indexes full history
- Auto-reindex on page visit if stale (>1h), refetches at 8s
- Add /channels/{id}/index-full endpoint (max_videos=0)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
SQLite returns datetime columns as strings via raw text() queries.
Parse crawled_at safely before comparing against utcnow().
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
GET /channels/{id} now fires a background _index_channel_task if the
channel hasn't been crawled in the last hour. The frontend refetches
channel + videos 8s after page load to pick up the updated data.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Run search queries concurrently (5 workers) instead of sequentially —
cuts crawl time dramatically. Add graph signal: fetch featured channels
from followed channels' /channels tab in parallel (4 workers), which
surfaces creator-curated recommendations as a high-signal, diverse pool
that search alone can't reach.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Double search results per query (20→40), increase query budget (15→25),
use more tags per signal (6→10-12), index more new channels per refresh
(5→10). Remove the YT logo from the header.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Strip yt-dlp's align:start position:0% cue settings from VTT files
after both video download and subtitle-only download so CSS ::cue centers them
- CC chip now shows already-downloaded langs (e.g. 'CC: en') directly
from disk with a '+' button to add more — no YouTube call needed
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- download_subs_only(): yt-dlp --skip-download to fetch just .vtt sidecar
- POST /by-yt/{ytId}/download-subs endpoint
- CC chip now visible on downloaded videos; clicking checks YouTube,
shows lang picker with "Add subtitles" button separate from re-download
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Convert subs to .vtt (was .srt which browsers don't support in <track>)
- Add GET /subtitle-files endpoint: instant disk scan for .vtt sidecar files,
no yt-dlp call needed
- Inject <track> elements into the video player for each .vtt on disk;
browser CC button appears automatically
- Before download: CC chip triggers YouTube availability check (slow, on demand)
- After download with subs: shows "CC ✓" — subtitles live in the player controls
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- fetch_available_subs() queries yt-dlp for manual + auto-generated
subtitle langs available on YouTube for any given video
- GET /api/videos/by-yt/{ytId}/subs exposes this to the frontend
- DownloadRequest now accepts subtitle_langs to override the global
setting on a per-download basis
- Watch page fetches available subtitle langs on load (in parallel),
shows a CC dropdown with manual langs + auto-generated langs labeled
"(auto)"; selected lang is passed through to the download
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- auto-sync daemon: background thread checks every hour and syncs followed
channels for users with sync_interval_hours set (6/12/24h options)
- disk stats: /api/stats now returns total/used/free/download bytes;
Stats page shows a disk usage bar
- subtitles: subtitle_langs setting (e.g. "en,sv") passed through all
download paths; yt-dlp writes .srt files alongside the video
- Settings page: sync interval dropdown + subtitle languages input
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The Merger+ffmpeg faststart postprocessor arg was overwritten by the
subsequent embed-metadata and embed-thumbnail passes anyway, making it
a pointless extra ffmpeg remux. Dropped it and restored the embeds.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Both flags trigger extra ffmpeg passes over the entire file after the
stream merge. They're unnecessary — metadata lives in the DB and
thumbnails come from YouTube. Removing them cuts the post-join wait
to just the faststart rewrite.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
yt-dlp 2026.03.17 dropped support for tv_embedded — it silently skips it
and falls back to web-only, which only exposes the pre-merged 360p format
(ID 18). The override was added to avoid SABR restrictions but is now the
cause of the low-quality downloads.
Removing --extractor-args restores yt-dlp's default client selection
(android_vr + web fallback) which exposes all formats up to 2160p.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The per-quality format strings fell back to best[height<=NNN] which on
YouTube resolves to pre-merged streams capped at ~360p, causing every
quality selector choice to silently download low-res video. Replace with
bestvideo+bestaudio as the intermediate fallback so adaptive streams are
always preferred over pre-merged ones.
Also fix detect_resolution to correctly label 1440p and 2160p files
instead of capping the display at 1080p.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
YouTube's web client gets SABR format restrictions in 2025-2026 yt-dlp,
limiting available streams and causing fallback to 360p. tv_embedded
bypasses SABR and exposes the full format list including 4K.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Most modern YouTube videos use VP9/AV1, so the old bestvideo[ext=mp4][vcodec^=avc1]
filter always failed and fell through to format codes 22/18 (720p/360p).
--merge-output-format mp4 handles the container; no need to restrict codec.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Previously the engine was blind to dislikes/dismissals:
- _build_user_tag_profile only used liked/watched (positive only)
- dismiss_penalty was capped at 80% so hated content still surfaced
- _search_and_store had zero affinity filtering, any YouTube result entered the queue
- user_tag_affinity negative scores (written by dismiss/dislike) were never read
Now:
- _build_user_tag_profile reads directly from user_tag_affinity (positive + negative)
- _tag_relevance_score returns negative values, so disliked-tag channels score below zero and get dropped
- _search_and_store skips channels whose indexed videos match 3+ negatively-rated tags
- list_discovery post-filters channels already in the queue using the same neg-affinity check
- Removed the old _dismissed_channel_tags + dismiss_penalty (superseded)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Default list view across all pages (Home, Following, History, Queue,
ContinueWatching, Liked, Discovery, SearchResults, Channel)
- Watch.jsx mobile: smaller chips/title/avatar/meta, hide tags + keyboard
hint on mobile, tighter gaps, compact description padding
- Fix mobile bottom nav showing focus outline on tap
- Fix _update_affinity to write negative entries (not just positive) so
dislikes/dismissals on unseen content actually register
- Dismissing a discovery video now fires -3.0 affinity against its tags,
matching the dislike weight
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Ranked feed — affinity was broken:
- Was looking up user_tag_affinity by v.category (e.g. "Science & Technology")
but affinity is stored using fine-grained video tags ("linux", "rust", etc.)
- Now uses SUM across all matching affinities: category OR any tag found in the
video's tags JSON via instr() — up to 5 matches to prevent runaway scores
Ranked feed — completion rate now influences channel scoring:
- Added avg_completion_pct to channel_stats CTE (AVG of completion_percent)
- Channels where you finish videos score higher; channels you bail on score lower
- Defaults to 50% (neutral) for channels with no tracked completions
Progress endpoint — backend auto-watched safety net:
- If completion_percent reaches ≥90% on a video >60s, mark watched automatically
- Catches cases where browser closes before the 10s debounce fires
- Guards against double-calling _update_affinity with not prev_watched check
VideoPlayer — seamless local file switch:
- Removed switchedToLocal state which caused a race condition: video loaded with
local_file_url already set but flag was still false, requiring a page refresh
- local_file_url from the backend is the single source of truth (backend gates
it with os.path.exists so it only appears when the file is actually on disk)
- Show spinner while video metadata loads, then immediately show local player
if file exists — no YouTube flash for already-downloaded videos
- After download completes, single refetchVideo() picks up the new URL and
React re-renders directly into local player
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Rewrite list_channels to run exactly 4 SQL queries regardless of channel
count: channel rows, aggregated video stats (GROUP BY), new-video counts,
and latest video (derived-table JOIN replaces per-row correlated subquery)
- Remove dead _CHANNEL_STATS_SELECT (orphaned after the rewrite)
- Fix upload_frequency_days: use pre-computed date_span_days from vstats
instead of a broken per-channel db.execute() call
- Restrict new_counts query to id_csv so it uses idx_videos_channel_indexed
- markChannelsSeen: optimistic setQueryData instead of invalidateQueries,
eliminating a full channel-list re-fetch on every Following page visit
- DownloadIndicator idle poll: 10s → 30s (no need to hit DB when idle)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
The CTE approach returned 0 rows — likely a SQLite/SQLAlchemy interaction
with :user_id appearing in multiple CTEs. Reverted to the original
correlated-subquery form which is proven correct.
The 4 indexes added in the previous commit still apply and will make
the per-channel subqueries faster once the DB is indexed on startup.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
