FastFlix is a simple and friendly GUI for encoding videos.
FastFlix keeps HDR10 metadata for x265, which will be expanded to AV1 libraries when available.
FFmpeg (version 4.3 or greater) under the hood for the heavy lifting, and can work with a variety of encoders.
FastFlix supports the following encoders if available:
|Encoder||x265||NVENC HEVC||NVEncC HEVC||VCEEncC HEVC||x264||rav1e||AOM AV1||SVT AV1||VP9||WEBP||GIF|
✓ - Full support | ✓* - Limited support
View the releases for binaries for Windows, MacOS or Linux
You will need to have
ffprobe executables on your PATH and they must be executable. Version 4.3 or greater is required. The one in your in your package manager system may not support all encoders or options.
Check out the FFmpeg download page for static builds for Linux and Mac.
git clone https://github.com/cdgriffith/FastFlix.git cd FastFlix python3 -m venv venv . venv/bin/activate pip install -r requirements.txt python -m fastflix
On any 10-bit or higher video output, FastFlix will copy the input HDR colorspace (bt2020). Which is different than HDR10 or HDR10+.
FastFlix was created to easily extract / copy HDR10 data, which it can do with the above listed encoders (x265, NVEncC, VCEEncC).
VP9 has limited support to copy some existing HDR10 metadata, usually from other VP9 files. Will have the line "Mastering Display Metadata, has_primaries:1 has_luminance:1 ..." when it works.
AV1 is still in development, and as such none of them currently support setting mastering-display data through FFmpeg (aka not supported with FastFlix), but some do if you use them directly.
For Windows users with Nvidia cards, NVEncC is the best option currently to use HDR10+.
FastFlix also supports using generated or extracted JSON HDR10+ Metadata with HEVC encodes via x265. However, that is highly dependent on a FFmpeg version that has been compiled with x265 that has HDR10+ support. BtbN's Windows FFmpeg builds have this support as of 10/23/2020 and may require a manual upgrade.
If you add HDR10+ metadata file, make sure the encoding log does NOT contain the line
x265 [warning]: –dhdr10-info disabled. Enable HDR10_PLUS in cmake or else it is unsupported.
FastFlix (v4.0.2+) passes through HLG color transfer information to everything except webp and GIF.
FastFlix does not plan to support Dolby Vision's proprietary format at this time.
Check out the different ways you can help support FastFlix!
Copyright (C) 2019-2021 Chris Griffith
The code itself is licensed under the MIT which you can read in the
Read more about the release licensing in the docs folder.
Various button icons from https://uxwing.com
Sample videos and thumbnail for preview image provided by Jessica Payne