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GPL2
Since FFmpeg is GPL2, doesn’t that require CompressX to disclose its source code?
IANAL, apologies if I miss understand license requirements.
https://github.com/FFmpeg/FFmpeg?tab=License-1-ov-file
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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The macOS integration on this app is impressive, but the technical compression bits are a combination of ffmpeg and off-the-shelf image compression libraries. The 90% number is a pretty typical (with lossy) image savings when taking a totally unoptimized jpeg out of a program like Photoshop. There's just a bunch of extra data that can be stripped out (EXIF for one), that doesn't affect how the image looks. For video, I have no idea. Handbrake can usually get me around 50% savings with the same resolution and frame rate.
ImageOptim is a good example of a nice UI on top of image compression libraries. Sadly, it hasn't been kept up to date. It's now slower and compresses worse than what's possible now. It also doesn't support webp. For my own work, I made an open source clone[0] with the newest stuff in it. I use libcaesium, which is a Rust wrapper around all the compression libraries. Check out the source to see how easy it is.
[0]: https://github.com/blopker/alic
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For lossless cut, there's the LosslessCut [1] app, which even has an experimental but mostly working version of a "smart cut" feature [2] (aka. only re-encode the minimal mandatory amount of frames if you trim at a point between 2 key frames)
[1]: https://github.com/mifi/lossless-cut
[2]: https://github.com/mifi/lossless-cut/issues/126
