• R/O
  • HTTP
  • SSH

x264-launcher: Repository summary

Simple x264 Launcher development repository

Recent Commits RSS

Rev. Time Author Message
5c51d84 2023-06-24 21:07:44 lordmulder master v3.03 Updated build script.
8721ba5 2023-06-18 21:13:06 lordmulder Updated NVEncC version.
20f229d 2023-06-18 21:01:30 lordmulder Updated x264 and x265 versions.
7471037 2023-06-18 20:46:07 lordmulder Updated cURL and CodeSign binaries.
e03fa75 2023-06-18 20:32:08 lordmulder Updated copyright year.
ab6f363 2023-06-18 20:25:00 lordmulder Drop VS2015 project/solution.
04310cb 2022-06-16 23:37:14 lordmulder v3.02 Updated copyright year.
413c93a 2022-06-16 23:36:58 lordmulder Updated CA certificates file for cURL.
fc49f8a 2022-06-16 23:19:46 lordmulder Bump NVEncC binaries to version 6.05 + updated detection ...
0da5ba8 2022-06-16 22:59:16 lordmulder Bump x264 version and updated changelog.

Recently edited Tags

Name Rev. Time Author
v3.03 5c51d84 2023-06-24 21:16:17 lordmulder
v3.02 04310cb 2022-06-16 23:54:36 lordmulder
v3.01 1157c58 2021-12-08 08:57:40 lordmulder
v3.00 2b1ba73 2021-05-30 02:50:52 lordmulder
v2.99 9aa00d2 2020-11-19 09:07:02 lordmulder
v2.98 b687872 2020-06-26 03:46:16 lordmulder
v2.97 26f5e16 2020-05-16 06:45:47 lordmulder
v2.96 718c88e 2020-04-18 06:10:46 lordmulder
v2.94 bb45909 2019-10-06 05:59:29 lordmulder
v2.93 00b713c 2019-08-07 04:23:29 lordmulder
v2.92 cb42e52 2019-07-22 22:53:56 lordmulder
v2.91 528acc0 2019-07-15 03:38:20 lordmulder
v2.90 fc14a14 2019-05-02 22:48:02 lordmulder
v2.89 ea40bc5 2018-10-13 04:43:42 lordmulder
v2.88 eb1c91c 2018-08-13 04:09:51 lordmulder
v2.87 7cafc15 2018-05-11 18:45:26 lordmulder
v2.86 6b0e1ff 2018-02-28 04:20:48 lordmulder
v2.85 8d440d7 2017-10-06 05:08:17 lordmulder
v2.84 00c53d7 2017-07-16 04:31:12 lordmulder
v2.83 339fb9a 2017-06-12 01:40:20 lordmulder
v2.82 bd82c8c 2017-05-26 20:45:39 lordmulder
v2.81 f00c0d2 2017-05-06 20:36:38 lordmulder
v2.80 4fdc96a 2017-04-02 03:33:29 lordmulder
v2.79 452c518 2017-03-24 05:03:50 lordmulder
v2.78 a348b67 2017-01-08 06:00:34 lordmulder
v2.77 36f3507 2016-12-14 05:20:13 lordmulder
v2.76 eba9f57 2016-10-21 19:54:28 lordmulder
v2.75 983601e 2016-09-25 22:59:01 lordmulder
v2.74 f63ad23 2016-07-18 18:46:16 lordmulder
v2.73 17f6303 2016-07-03 21:16:48 lordmulder
v2.72 18aa620 2016-06-18 03:00:42 lordmulder
v2.71 363b472 2016-06-12 21:37:17 lordmulder
v2.70 587c29a 2016-04-30 00:51:46 lordmulder
v2.69 669a915 2016-04-23 22:09:39 lordmulder
v2.68 a1bf0db 2016-04-10 02:48:53 lordmulder
v2.67 cbec1e3 2016-03-18 06:35:24 lordmulder
v2.66 5af1d81 2016-02-06 20:12:34 lordmulder
v2.65 8caee77 2016-01-24 23:09:17 lordmulder
v2.64 fd6486e 2015-12-20 08:19:10 lordmulder
v2.63 92a6549 2015-12-20 03:24:19 lordmulder
v2.62 83b79ca 2015-11-19 04:49:36 lordmulder
v2.61 b373b3d 2015-10-20 03:15:57 lordmulder
v2.60 db68e2a 2015-10-13 04:02:40 lordmulder
v2.51 dc16304 2015-04-27 00:50:34 lordmulder
v2.50 72d8d7d 2015-04-18 02:52:33 lordmulder
v2.46 ce6d991 2015-02-01 04:17:36 lordmulder
v2.44 c1fd967 2014-11-03 00:57:43 lordmulder
v2.42 621f7bc 2014-08-16 23:04:23 lordmulder
v2.41 860add9 2014-08-16 00:11:10 lordmulder
v2.40 e2ad461 2014-06-05 02:36:53 lordmulder
v2.39 3ebb3d9 2014-05-11 00:45:35 lordmulder
v2.38 1af6d6c 2014-05-02 04:30:51 lordmulder
v2.37 2586bdb 2014-04-21 23:57:26 lordmulder
v2.36 5cc6f24 2014-04-17 05:36:59 lordmulder
v2.35 8f6ccd0 2014-04-12 07:26:06 lordmulder
v2.34 14cbc72 2014-04-11 07:12:58 lordmulder
v2.31 1dd25db 2014-02-07 21:37:08 lordmulder
v2.28 8d9fb21 2013-12-15 06:31:35 lordmulder
v2.27 d4459d8 2013-12-09 03:06:29 lordmulder


Name Rev. Time Author Message
master 5c51d84 2023-06-24 21:07:44 lordmulder Updated build script.


% Simple x264/x265 Launcher % Created by LoRd_MuldeR <<mulder2@gmx>> – check http://muldersoft.com/ for news and updates!


This application is a lightweight GUI front-end for the x264 H.264/AVC as well as the x265 H.265/HEVC encoder, based on the Qt toolkit.

Some key features of the Simple x264/x265 Launcher software include:

  • Support for creating H.264/AVC (x264) and H.265/HEVC (x265) files
  • Fully self-contained, no additional Codecs or Plugin's are required
  • 64-Bit as well as 32-Bit encoder binaries are fully supported
  • Optionally the "high bit-depth" encoder variants can be selected
  • Batch encoding (job control) support is implemented
  • If desired, multiple encoding jobs can be executed concurrently
  • Adding new jobs via command-line interface is supported
  • Input from the Avisynth and VapurSynth frame servers is supported
  • 32-Bit Avisynth/VapourSynth can be mixed with 64-Bit x264/x265
  • Straightforward encoder setup thanks to the Preset and Tuning system
  • Custom encoder parameters can be added, if desired
  • Easily manage your encoder configurations with user-defined templates
  • Consistent "look & feel" on all systems thanks to the Qt toolkit

System Requirements

Simple x264 Launcher is 100% standalone, i.e. it does not require Mircrosoft.NET, Java Runtime Environment or other "external" dependencies.

The required Qt DLLs as well as the encoder binaries are included with the application. Frameservers, like Avisynth or VapourSynth, may need to be installed separately though.

The minimum system requirements to run Simple x264/x265 Launcher are as follows:

  • Windows Vista with Service Pack 2 or any later Windows system – note that Windows XP is not supported anymore!
  • 64-Bit editions of Windows are highly recommended, though 32-Bit editions will work as well
  • The CPU must support at least the MMX and SSE instruction sets
  • Avisynth input only available with Avisynth 2.6 installed – Avisynth 2.5.x is not recommended!
  • VapourSynth input only available with VapourSynth R46+ installed – Python is a prerequisite for VapourSynth!
  • YV16/YV24 color spaces require Avisynth 2.6 (see section 10)

Note: Most of these requirements are not imposed by Simple x264 Launcher itself, but by the encoders (e.g. x264 and x265) that we use.

Anti-Virus Warning

Occasionally your Antivirus program may mistakenly detect "malware" (virus, trojan, worm, etc.) in some of the files here. This is called a "False Positive" and the files are actually innocent/clean. It's an error in your specific Antivirus software. In case you encounter such problems, go to http://www.virustotal.com/ and check the file again with multiple Antivirus engines! And take care with results like "suspicious" , "generic" or "packed". Those are not real hits, they are just wild speculation. Apparently Antivirus programs tend to suspect installers/uninstaller created with NSIS. Furthermore some Antivirus programs blindly suspect all UPX'd (packed) executables of being malware. Obviously this is a stupid generalization, so you can safely ignore those warnings! Last but not least: Always keep in mind that this is OpenSource software! If you don't trust the people providing the pre-compiled binaries, download the source codes and compile them yourself.



Simple x264/x265 Launcher is Copyright (C) 2004-2023 LoRd_MuldeR.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.


Third-Party Software

The following third-party software is used by this application:

  • The Qt GUI Toolkit is Copyright (C) 2012 Digia Plc. http://qt.digia.com/ Qt is a free software, released under the terms of GNU GPL, version 3.

  • The x264 encoder software is Copyright (C) 2003-2023 x264 project. http://www.videolan.org/developers/x264.html x264 is a free software and is released under the terms of the GNU GPL.

  • The x265 encoder software is Copyright (C) 2013-2023 x265 project. http://www.videolan.org/developers/x265.html x265 is a free software and is released under the terms of the GNU GPL.

  • The NVEncC encoder software is Copyright (c) 1999-2023 rigaya. https://onedrive.live.com/?id=6BDD4375AC8933C6%212293&cid=6BDD4375AC8933C6 NVEncC is a free software and is released under the terms of the MIT License.

  • AviSynth is Copyright (C) 2002-2006 Ben Rudiak-Gould et al. http://avisynth.nl/index.php/Main_Page AviSynth is a free software, released under the terms of the GNU GPL.

  • VapourSynth is Copyright (c) 2012-2023 Fredrik Mellbin. http://www.vapoursynth.com/ VapourSynth is free software, released under the terms of the GNU LGPL.

All third-party binaries included in this distribution package are redistributed in full accordance with the GNU General Public License, version 2. For further information see the respective web sites!

Portable Mode

Simple x264/x265 Launcher can be run in a "portable" mode. This may be helpful, for example, if you want to run the application directly from your USB stick, and on different machines. There is no separate portable version though, since all binaries of Simple x264/x265 Launcher support the portable mode. In order to trigger the portable mode, simply rename the EXE file to x264_launcher_portable.exe. Once the portable mode has been enabled, all configuration files will be saved to (and loaded from) the same folder where the EXE file resides. Otherwise, they are stored in the user's %LOCALAPPDATA% folder. Note, however, that in portable mode, the program folder (i.e. the folder where the EXE file resides) must always be writeable. If the program folder happens to not be writeable, your settings can not and will not be saved, in portable mode!

Note: Regardless of whether you enable the portable mode or not, the Simple x264/x265 Launcher application is always "portable", in the sense that the program is fully self-contained. It does not require any "external" libraries or frameworks to be installed on the computer. The only exceptions here are Avisynth and VapourSynth, which have to be installed separately, if they are needed. The sole purpose of the portable mode is to control where the configuration files will be stored. There is no such thing as a separate "portable" version of Simple x264/x265 Launcher.


There now is a "portable" edition VapourSynth available, which Simple x264/x265 Launcher can use. For this purpose, download the "portable" edition VapourSynth an extract it into the sub-directory extra\VapourSynth inside of the Simple x264/x265 Launcher "main" directory (i.e. where the x264_launcher.exe file is located). More specifically, the 32-Bit version of "portable" VapourSynth needs to go to the extra\VapourSynth-32 sub-directory and the 64-Bit version needs to go to the extra\VapourSynth-64 sub-directory. Be aware, however, that "portable" VapourSynth requires embeddable Python to work! So, you must download Python as "embeddable zip file" from the Python web-site and extract that into the same sub-directory as the VapourSynth "portable" binaries. In the end, it should look like this:

├─ x264_launcher_portable.exe
└─ extra\
   ├─ VapourSynth-32\
   │  ├─ VapourSynth.dll  <32-Bit>
   │  ├─ VSPipe.exe       <32-Bit>
   │  ├─ python37.dll     <32-Bit>
   │  └─ etc…
   └─ VapourSynth-64\
      ├─ VapourSynth.dll  <64-Bit>
      ├─ VSPipe.exe       <64-Bit>
      ├─ python37.dll     <64-Bit>
      └─ etc…


There now is a "portable" edition Avisynth available, which Simple x264/x265 Launcher can use. For this purpose, download and run the standard Avisynth 2.6 (or later) installer, but be sure to select "Standalone, Unpack Files only" as the installation type! Note that this needs to be selected on the "Choose Components" page of the installer. This will create a "portable" version of Avisynth in the selected output directory. Let the installer extract the Avisynth files into the sub-directory extra\Avisynth inside of the Simple x264/x265 Launcher "main" directory (i.e. where the x264_launcher.exe file is located). More specifically, the 32-Bit version of "portable" Avisynth needs to go to the extra\Avisynth\x86 sub-directory and the 64-Bit version needs to go to the extra\Avisynth\x64 sub-directory. In the end, it should look like this:

├─ x264_launcher_portable.exe
└─ extra\
   └─ Avisynth\
      ├─ x86\
      │  ├─ avisynth.dll  <32-Bit>
      │  ├─ devil.dll     <32-Bit>
      │  └─ etc…
      └─ x64\
         ├─ avisynth.dll  <64-Bit>
         ├─ devil.dll     <64-Bit>
         └─ etc…

Updating Your Encoder Binaries

This application works best with the encoder binaries that are included in the distribution package. That's because these binaries have been tested to work properly with the GUI. Nonetheless, in some cases, you may wish to replace the included binaries with a newer encoder version or with an alternative build of the same version. Generally, newer versions of x264/x265 should work properly, though there is no guarantee! In rare cases, the CLI syntax (or console output) may have changed in a way that breaks compatibility with the GUI program. Furthermore, this application does not provide any support for "unofficial" patches. Usually custom builds that contain such patches will work anyway, but again there is no guarantee. Also, using outdated binaries with this application is not supported or intended. Please report bugs rather than reverting to an old version!

Timeout Warning

This application provides "deadlock" prevention. This means that if an encoder process (x264 or Avisynth) stops responding, it will be terminated. This is done in order to ensure that the main program as well as the other encoder processes can continue properly. More specifically, a warning will be raised if the process does not respond for one minute. If the process still didn't respond after five minutes, it will be terminated and consequently the encoding job is aborted. In some rare cases, your Avisynth script may take a very long time to initialize and thus the process will be aborted before the encoding can start. For example, this can happen if FFMS2/FFVideoSource takes a very long time to index the source file. In that case, we recommend to index the source file beforehand, e.g. by using the 'ffmsindex' tool.

Custom Parameters

This application provides a "Custom Parameters" edit box. All command-line parameters that you enter there will be passed to x264 or x265 unmodified. You can send arbitrary parameters - even such ones that are only available in patched builds. See the x264/x265 manuals or the Help Screen for a list of available parameters. However be aware that the GUI will not check your parameters at all! Thus using an unknown or unsupported parameter will cause your encode to fail. Using an existing parameter in the wrong way will cause your encode to fail too. Last but not least, some parameters are forbidden by the GUI. If some parameter is forbidden, that's because the GUI will set that parameter for you (if required) or because that parameter is NOT compatible with the GUI.

HINT: Occasionally your custom parameters string may become very long, especially when working with zones. In that case you can right-click on the "Custom Parameters" edit box and choose "Open the Text-Editor". This will open a multi-line text editor for easier parameter handling!

Color Spaces / Chroma Subsampling

Avs2YUV converts the output of your Avisynth script to the YV12 format, i.e. YUV data with 4:2:0 chroma subsampling and 8-Bit precision. Usually this is exactly what you want/need. If, however, your Avisynth script outputs image data with a higher chroma resolution, e.g. YUY2 (4:2:2), then the conversion to YV12 (4:2:0) will discard some of the information. In that case, and if you want/need to keep the full chroma resolution of your Avisynth script's output, you will have to pass the -csp switch to Avs2YUV as a custom parameter! Use -csp I422 for YUV 4:2:2 (YV16) and use -csp I444 for YUV 4:4:4 (YV24). Please note that Avs2YUV can NOT pass through the "packed" YUY2 format. Thus it has to be converted to the "planar" YV16 format. As both, YUY2 and YV16, are YUV 4:2:2 formats, converting from YUY2 to YV16 is a lossless operation. Note, however, that Avisynth 2.5 did NOT support YV16/YV24, so you need to use Avisynth 2.6; otherwise Avs2YUV will fail to do the conversion! Also be aware that the x264 encoder itself will convert any YV16 or YV24 input back to the YV12 format, if you don't pass the suitable --output-csp i422/i444 switch to x264 as a custom parameter! In short, to encode YUY2 from Avisynth, you have to pass -csp I422 to Avs2YUV and --output-csp i422 to x264 to avoid 4:2:0 downsampling.

Audio Processing/Encoding

This application is a front-end to the x264 encoder. And, as x264 does NOT support audio processing/encoding yet, there is NO explicit support for audio encoding in this application. Thus, if you want to create a video file with audio, you will have to add the audio stream to the encoded video file afterwards. This process is called 'multiplexing' or just 'muxing'. In case you are dealing with Matroska (MKV) files, then "MKVMerge GUI" from the "MKVToolNix" package is the right tool for this task. If, instead, you are dealing with MP4 files, then you may use "MP4Box" or the "YAMB" front-end for muxing the audio stream.

Having said all that, there now is an unofficial "Audio" branch of x264 available. If you are using one of the modified x264 builds with "audio support" patch (e.g. those provided by JEEB), then you can process the audio with x264 and skip the additional muxing step. Basically the audio patch adds a new --acodec switch, which you can pass to x264 as a custom parameter. For example, you can pass --acodec aac for encoding the audio to the AAC format (recommended for MP4 files). Or you can pass --acodec vorbis for encoding the audio to the Ogg/Vorbis format (recommended for MKV files). Please be aware that audio encoding will work only, if your input file contains an audio stream! When using the built-in LAVF/FFMS input of x264, the audio can be encoded straight from the input file. This does NOT work with Avisynth input! Instead, if you want to encode audio from an Avisynth script, you must pass the --audiofile switch to x264 as a custom parameter. For convenience, the string --audiofile $(INPUT) may be used.

OpenCL Support

Newer builds of x264 now support OpenCL Lookahead, i.e. GPU accelerated encoding. This can be enabled with the --opencl custom parameter. But OpenCL Lookahead will only work if you have an OpenCL-capable graphics card and if you have an up-to-date video driver installed!

Note that x264 will now only try to load the OpenCL.DLL if you really use the --opencl option. Therefore, the "dummy" OpenCL.DLL included in older versions of the Simple x264 Launcher is not needed any more!!

Command-line Syntax

PLEASE NOTE: These are parameters you can pass to Simple x264 Launcher (x264_launcher.exe), they can NOT be passed to x264 or x265 as "custom" parameters !!!

The following command-line switches are available:

--add-file="<file>" .............. Create a new job via GUI dialog
--add-job="<src>|<dest>|<tpl>" ... Create a new job directly from CLI
--[no-]force-start ............... Start the next job immediately
--[no-]force-enqueue ............. Append the next job to the queue
--skip-avisynth-check ............ Skip Avisynth detection
--skip-vapoursynth-check ......... Skip VapourSynth detection
--skip-version-checks    ......... Skip x264/x265 version checks, NOT recommended!
--force-cpu-no-64bit ............. Forcefully disable 64-Bit support
--no-deadlock-detection .......... Do not abort a sub-process on possible deadlock
--[no-]console ................... Do [not] show the Debug console
--no-style ....................... Don't use the Qt "Plastique" style

Some details on the "--add-job" command-line switch:

<src> .... Specifies the source media file or AVS/VPY script file
<dest> ... Specifies the output H.264/HEVC/MKV/MP4 file to be written
<tpl> .... Specifies the template to be used ("-" uses defaults)

Use --[no-]force-start or --[no-]force-enqueue to tweak startup behavior. If neither is used, the default startup behavior applies.

Downloads & Updates

Please download the latest version of Simple x264/x265 Launcher from one of the official download mirrors:

  • https://github.com/lordmulder/Simple-x264-Launcher/releases/latest
  • https://bitbucket.org/muldersoft/simple-x264-launcher/downloads
  • https://osdn.net/projects/x264-launcher/releases/
  • https://sourceforge.net/projects/muldersoft/files/Simple%20x264%20Launcher/
  • https://www.mediafire.com/folder/7sac4w9fdszuf/x264_x64_Launcher
  • https://www.assembla.com/spaces/simple-x264-x265-launcher/documents

Help & Support

For help and support, please join the discussion at: * http://forum.doom9.org/showthread.php?t=144140

Please avoid sending me e-mail with support requests. I get a lot of mail every day and cannot answer everything. Thank you!

Source Codes

Simple x264/x265 Launcher is written in C++ and currently developed with Microsoft Visual Studio 2013. It is based on the Qt toolkit.

The source codes can be obtained from the official Git repository:

  • https://github.com/lordmulder/Simple-x264-Launcher
  • https://gitlab.com/simple-x264-launcher/simple-x264-launcher/
  • https://bitbucket.org/muldersoft/simple-x264-launcher/src
  • https://osdn.net/projects/x264-launcher/scm/git/x264-launcher/
  • https://www.assembla.com/code/simple-x264-x265-launcher/git/nodes

Download Visual Studio Express 2017 for Windows Desktop here: * http://www.visualstudio.com/

Download the latest Qt toolkit (4.8.x) from the Qt Project web-site: * http://download.qt-project.org/official_releases/qt/4.8/

Alternatively, you can download my pre-compiled "prerequisites" package: * https://sourceforge.net/projects/lamexp/files/Miscellaneous/Prerequisites/


Show on old repository browser