SponsorCut

An Android app that permanently removes SponsorBlock-marked segments from locally downloaded YouTube videos using FFmpeg. Works on de-Googled phones with no Google Play Services.

Features Permanent cutting — segments physically removed from the file, not just skipped SponsorBlock category selection — choose which segment types to cut (Sponsor checked by default); all 11 categories supported, persisted between sessions SponsorBlock API — segments pre-fetched automatically by video ID; Process button disabled if none found Readable segment preview — fetched segments are shown as h:mm:ss.ms timestamps before processing Title + channel display — fetched from YouTube oEmbed API, shown in UI and pinned during processing Three cut modes — Fast (stream copy), HW-Accurate (device GPU via MediaCodec, single-pass), SW-Accurate (mpeg4 CPU, single-pass) Audio-only support — works on .m4a, .opus, .mp3 downloads; saved to Music/SponsorCut Background processing — foreground service with notification, wake lock prevents CPU throttling Busy-state guard — new share/direct intents are rejected while a job is running (please wait for current job to conclude and try again...) Cancel anytime — ⏹ Cancel button stops the job mid-encode and restores the UI De-Googled friendly — no Google Play Services, no Firebase, no tracking Smart ID memory — captures YouTube ID from URL share, file share, clipboard; remembered 7 days File browser — always available to pick or swap the video file All settings persisted — cut mode, category selection, output folder saved between sessions Diagnostic log — 📋 Show log button after each run for debugging Container inference — output container is inferred from ffprobe metadata (not only filename extension) Performance diagnostics — logs charging/power state and full processing equation (processing_time_s = a * (duration_time_s) + b) when available