Avidemux

Avidemux is a free and open-source video editing program designed for video editing and video processing. It is written in C++, and uses either GTK+ or Qt for its user interface.

Avidemux

Features

Avidemux is capable of non-linear video editing, applying visual effects (called "Filters" by Avidemux) to video, and transcoding video into various formats. Some of the filters were ported from MPlayer and Avisynth. Avidemux can also insert audio streams into a video file (an action known as multiplexing or "muxing") or extract audio streams from video files (an action known as "demuxing").

An integral and important part of the design of the program is its project system, which uses the SpiderMonkey JavaScript engine. Whole projects with all options, configurations, selections, and preferences can be saved into a project file. Like VirtualDub's VCF scripting capabilities, Avidemux has advanced scripting available for it both in its GUI and command line modes. It also supports a non-project system just like VirtualDub, where users can simply create all of their configurations and save the video directly without making a project file. A project queue system is also available.

Avidemux has built-in subtitle processing, both for Optical Character Recognition of DVD subtitles and for rendering hard subtitle. Avidemux supports various subtitle formats, including MicroDVD (.SUB), SubStation Alpha (.SSA), Advanced SubStation Alpha (.ASS) and SubRip (.SRT).

While it is primarily a GUI program, Avidemux can also be run from the command line.

Components

Avidemux was written from scratch, but additional code from FFmpeg, MPlayer, Transcode and Avisynth has been used on occasion as well. Nonetheless it is a completely standalone program that does not require any other programs to read, decode, or encode other than itself. The built-in libavcodec library from the FFmpeg project is used for decoding and encoding of various audio and video formats such as MPEG-4 ASP. The primary (though not the only) Avidemux programmer uses the nickname 'Mean' on the Avidemux forum.<ref>Template:Cite web</ref> The Avidemux project is open to user input and many suggestions from its users have already been implemented as fully written features.

Multithreading

Multithreading has been implemented in the following areas of Avidemux (some partially through libavcodec):

Encoding
- H.264/MPEG-4 AVC (using x264)
- MPEG-1 and MPEG-2 (using libavcodec)
- MPEG-4 Part 2 (SP/ASP, using libavcodec or Xvid)
  - Earlier versions of Xvid are not compatible with this feature.
Decoding
- MPEG-1 and MPEG-2 (using libavcodec)
- MPEG-4 Part 2 (SP/ASP, using libavcodec)

Versions and ports

Avidemux is available for almost all distributions of GNU/Linux that are capable of compiling C++, GTK+ and the SpiderMonkey JavaScript engine. A Win32 version of this program is also available for Microsoft Windows users, as well as Mac OS X, FreeBSD, NetBSD and OpenBSD ports and packages.<ref>Template:Cite web</ref><ref>Template:Cite web</ref><ref>Template:Cite web</ref> Starting with version 2.4, Avidemux offers a command-line interface and two graphical ones: One based on GTK+ and another based on Qt 4.

Supported formats

Avidemux supports the following file formats:

Multimedia container formats<ref name="input_formats">Template:Cite web</ref><ref name="output_formats">Template:Cite web</ref>
Name	File extension	As input	As output
Audio Video Interleave	.AVI	Template:Yes	Template:Yes
Advanced Systems Format	.ASF, .WMV and .WMA	Template:Yes	Template:No
Flash Video	.FLV	Template:Yes	Template:Yes
Matroska	.MKV	Template:Yes	Template:Yes
MPEG elementary stream	Template:N/A	Template:Yes	Template:No
MPEG program stream	.MPG and .MPEG	Template:Yes	Template:Yes<ref group="Note">Can create files that are compatible with Video CD, SVCD or DVD Video</ref>
MPEG transport stream	.TS	Template:Yes	Template:No
MPEG-4 Part 14	.MP4	Template:Yes	Template:Yes
NuppelVideo	.NUV	Template:Yes	Template:No
OGM	.OGM	Template:Yes	Template:Yes
QuickTime	.MOV	Template:Yes	Template:No
3GP	.3GP	Template:Yes	Template:No

Video formats<ref>Template:Cite web</ref><ref>Template:Cite web</ref>
Name	As Input	As Output
Cinepak	Template:Yes	Template:No
DV	Template:Yes	Template:No
FFV1	Template:Yes	Template:Yes
H.263	Template:Yes	Template:Yes
H.264/MPEG-4 AVC	Template:Yes	Template:Yes<ref group="Note">Using x264</ref>
HuffYUV	Template:Yes	Template:Yes
MPEG-1	Template:Yes	Template:Yes
MPEG-2	Template:Yes	Template:Yes
MPEG-4 Part 2<ref group="Note">Both Simple Profile and Advanced Simple Profile</ref>	Template:Yes<ref group="Note">Supported codec FourCCs: DIVX, DX50, XVID, FMP4, M4S2</ref>	Template:Yes<ref group="Note">Using FFmpeg or Xvid</ref>
Motion JPEG	Template:Yes	Template:Yes
MSMPEG-4 v2<ref group="Note">FourCC: DIV3</ref>	Template:Yes	Template:No
Raw video – RGB	Template:Yes	Template:No
Raw video – YV12	Template:Yes	Template:No
Snow	Template:No	Template:Yes
Sorenson Video 3 (SVQ3)	Template:Yes	Template:No
VC-1<ref group="Note">FourCC: WMV3</ref>	Template:Yes	Template:No
VP3	Template:Yes	Template:No
VP6	Template:Yes<ref group="Note">Through libavcodec</ref>	Template:No
Windows Media Video 8<ref group="Note">FourCC: WMV2</ref>	Template:Yes	Template:No
Y800	Template:Yes	Template:Yes

Audio formats<ref>Template:Cite web</ref><ref>Template:Cite web</ref>
Name	As Input	As Output
Adaptive Multi-Rate – Narrow Band (AMR-NB)	Template:Yes	Template:No
Advanced Audio Coding (AAC)	Template:Yes	Template:Yes
AC-3	Template:Yes	Template:Yes
DTS	Template:Yes	Template:No
Linear pulse code modulation (LPCM)	Template:No	Template:Yes
MP2	Template:Yes	Template:Yes
MP3	Template:Yes	Template:Yes
Pulse-code modulation (PCM)	Template:No	Template:Yes
Vorbis	Template:Yes	Template:Yes