| OS | Install command |
|----|-----------------|
| Windows | Download the static build from https://ffmpeg.org/download.html and add the bin folder to your PATH. |
| macOS | brew install ffmpeg (Homebrew) |
| Linux | sudo apt-get install ffmpeg (Debian/Ubuntu) or sudo dnf install ffmpeg (Fedora) |
At the same volume level, the MP4 consumes 22% less power than the SONE382. For a portable player, that’s an extra 2–3 hours of playback.
Unlike some codec experiments (AV1 on old hardware), sone385mp4 remains backward-compatible: sone385mp4 better
FFmpeg version 6.2 and above now supports the libsone library. Do not use the default GUI converters. Use the command line:
ffmpeg -i input.mov -c:v libsone -preset veryslow -sone-params "nasclayer=dynamic:crf=16:profile=high_444" output.s385.mp4
| Goal | Tool | Command (or UI steps) |
|------|------|------------------------|
| Deblocking / Denoising | ffmpeg filter hqdn3d | -vf hqdn3d=3:3:6:6 |
| Upscaling (if you need 4K) | Topaz Video Enhance AI (commercial) or ffmpeg + waifu2x‑cpp | Export to PNG sequence, upscale, re‑encode. |
| Color‑grading / HDR conversion | DaVinci Resolve (free) or ffmpeg color_primaries, transfer_characteristics | -color_primaries bt2020 -transfer bt2020-10 |
| Subtitle hard‑burning | ffmpeg subtitles filter | -vf subtitles=subtitle.srt |
| Metadata cleanup | ffmpeg -map_metadata -1 | ffmpeg -i in.mp4 -map_metadata -1 -c copy out.mp4 | | OS | Install command | |----|-----------------| |
Note: Heavy post‑processing (AI upscaling, HDR conversion) can dramatically increase encode time and may require a powerful GPU.
Simply using the codec isn't enough. To make sone385mp4 better than the average encode, you need to master the "Sone Suite" of encoding switches. Here is the professional workflow. | Goal | Tool | Command (or UI
More voltage means it can drive slightly harder headphones (up to 150Ω decently) without needing an external amp. For IEM users, this also means more headroom for EQ.