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FastFlix is a simple and friendly GUI for encoding videos. FastFlix keeps HDR10 metadata for x265, NVEncC HEVC, and VCEEncC HEVC, which will also be expanded to AV1 libraries when available. It needs FFmpeg (version 4.3 or greater) under the hood for the heavy lifting, and can work with a variety of encoders.

Free software
OS: Win
File size: 42MB
Portable version
Old versions
Version history
9.1/10
6 votes
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Screenshots

FastFlix screenshot

FastFlix screenshot 2

FastFlix screenshot 3
Latest version

5.7.4 (July 19, 2024)



Download


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Download FastFlix 5.7.4 Windows 64-bit  45MB  Win64

Download FastFlix 5.7.4 Mac 64-bit  51MB

Download FastFlix 5.7.4 Linux 64-bit  91MB




Download Portable and other versions

Download FastFlix 5.7.4 Portable Windows 64-bit  57MB  Win64  Portable




Download old versions


Download FastFlix old versions



Software License

Free software / FOSS (Free download and also Free and Open Source Software)



Supported operating systems

WinWindows




Version history / Release notes / Changelog / What's New


Version 5.7.4

Fixing #578 Missing code signing to FastFlix exec inside of the installer (thanks to Sam Katakouzinos)
Fixing #579 Missing Infos and no Mouse-Over info in Subs-Panel since 5.7 (thanks to GeZorTenPlotZ)
Fixing #580 No Downmix key error on profile save (thanks to Hankuu)
Fixing #581 Fastflix could not recognize hevc video containing hdr10plus metadata with recent ffmpeg build (thanks to alpha-0)

View full changelog




All features


HDR
On any 10-bit or higher video output, FastFlix will copy the input HDR colorspace (bt2020). Which is different than HDR10 or HDR10+.

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.

rav1e - can set mastering data and CLL via their CLI but not through ffmpeg.
SVT AV1 - accepts a "--enable-hdr" flag that is not well documented, not supported through FFmpeg.
aomenc (libaom-av1) - does not look to support HDR10
HDR10+
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.

HLG
FastFlix (v4.0.2+) passes through HLG color transfer information to everything except webp and GIF.




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Alternative to FastFlix


clever FFmpeg-GUI







Guides and How to's


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6 reviews, Showing 1 to 5 reviews


Rating by Mike on Oct 20, 2023 Version: 5.5.7 OS: Windows 11 64-bit Ease of use: 8/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




Rating by b0unty on Aug 29, 2023 Version: 5.5.7 OS: Windows 10 64-bit Ease of use: 8/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




Rating by Damudai on Apr 9, 2023 Version: 5.3.0 OS: Windows 11 64-bit Ease of use: 9/10 Functionality: 10/10 Value for money: 10/10 Overall: 10/10




NEG:
-unclear formatting params [libaom], how to enable film-grain:8 etc.
-outright terrible, missing documentation
-can not create proper profile, without having to enable single pass every time
-can not modify raw commands, override, adjust settings
-no vmaf [sample] encoding

POS:
+delivers best quality [aom>svt] versus cleverffmpeg-gui, handbrake etc.


Review by Stiff Martin on Nov 28, 2022 Version: 5.0 OS: Windows 10 64-bit Ease of use: 7/10 Functionality: 7/10 Value for money: 10/10 Overall: 8/10




The Bad:
-no av1 intelx86-64 tune support [like with clever ffmpeg gui]
-no quicksync hevc
-no quicksync vp9
-no quicksync avc
-trimming is bad, it needs sliders
-no presets for proxies

The Good:
-replaces handbrake for software hevc encoding
-lots of options
-free and fast
-easy setup


Review by Martin Steve on Mar 8, 2022 Version: 4.6.0 OS: Windows 10 64-bit Ease of use: 10/10 Functionality: 5/10 Value for money: 10/10 Overall: 8/10


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