Show HN: Remove Silence from Videos with Ffmpeg There was recently a Show HN for a program that lets one remove silence from video files [0]. I was almost certain that ffmpeg could do this... But after searching for it, it turned out I was wrong: ffmpeg can't do this out of the box, and also can't read input from an EDL file [1]. So I set out to write a solution, as simple as possible: produce a list of select filters that are applied to video and audio, and retain only the non-silent parts. The 'silencedetect' audio filter detects silences, and produces timestamps for when silences start and end. So one can pipe the output of that to a Python script, that builds an ffmpeg command with the appropriate select filters. The resulting ffmpeg command can be run to re-encode the video without the silent parts. Hope this helps. - - - Notes: 1/ I did find something somewhat similar to what I ended up doing [2], but it's complicated, and does the video encoding inside of Python. Granted, moviepy uses ffmpeg under the hood, but it's still better if ffmpeg does all the encoding directly. 2/ This solution doesn't produce a myriad of intermediary files that it would recombine afterwards; there is just one encoding of the output video file. 'silencedetect' is very fast, so all in all running this should be pretty fast. [0] https://ift.tt/Z3rGyml [1] https://ift.tt/4Ek3ZIP [2] https://ift.tt/woEcbdH... https://ift.tt/nIL07A6 June 18, 2022 at 11:51PM
Show HN: Tape It, iOS recording app for musicians Hello HN, Over the last 15 months, two friends and I developed the music recording app we felt we wanted based on our own needs as musicians. It's called Tape It [1] and has just recently hit the Apple App Store [2]. We put a lot of effort into a good UX to help musicians really focus on playing their instrument instead of pretending to be a recording engineer. The app records in stereo on newer iPhones (although that's a premium feature; the free version only records in standard mono audio quality). I would be really grateful for advice from this community on how to best approach marketing. We had a great TechCrunch article covering our launch [3], and we posted it on various music websites. Turns out advertising on Google or Apple Search is a dark art, though. We have some good ideas for developing a good social media presence, but they will take time. Please hit us with feedback, opinions and advice that you think a young ind...
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