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SottoCraft
Transcribe, review, and export subtitles without the drift
SottoCraft is a Windows desktop app for subtitle QC work. Unlike browser tools that upload your files or editors that cause sync drift, SottoCraft runs entirely local — no cloud, no subscription, no per-minute fees. Built-in AI transcription via Whisper, VLC-powered playback with zero seek drift, automatic audio quality flagging, spell check, character counter for broadcast compliance, foot pedal support, and export to SRT, VTT, TTML and ASS. One-time purchase.
I started this as an experiment to see what I could actually build with AI assistance — and ended up with something I'd genuinely use myself.
The core problem: every subtitle tool I tried either had sync drift when seeking, required a cloud subscription, or was priced for broadcast studios. I wanted something local, simple, and affordable for independent subtitlers and creators.
The biggest technical challenge was replacing the playback engine mid-development. The original cv2/ffplay approach caused 2-4 second audio drift on every seek — completely unreliable for QC work. Switching to VLC eliminated that entirely.
Happy to answer any questions about the build process or the tool itself.
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About SottoCraft on Product Hunt
“Transcribe, review, and export subtitles without the drift”
SottoCraft was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #109 on the daily leaderboard. SottoCraft is a Windows desktop app for subtitle QC work. Unlike browser tools that upload your files or editors that cause sync drift, SottoCraft runs entirely local — no cloud, no subscription, no per-minute fees. Built-in AI transcription via Whisper, VLC-powered playback with zero seek drift, automatic audio quality flagging, spell check, character counter for broadcast compliance, foot pedal support, and export to SRT, VTT, TTML and ASS. One-time purchase.
SottoCraft was featured in Productivity (653.8k followers), Developer Tools (514k followers) and Video (1.9k followers) on Product Hunt. Together, these topics include over 216.3k products, making this a competitive space to launch in.
Who hunted SottoCraft?
SottoCraft was hunted by Christopher Contreras. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Christopher Contreras