It supports many file types, including AVI, MP4, Matroska, MPEG-2, H.264 and H.265. It does not yet, or only partially supports modern open formats, like Opus, WebM, VP8, VP9 and AV1. Tasks can be automated using projects, job queue and powerful scripting capabilities.
Avidemux enables you to edit most video files by your requirements to make them play on any selected device. Multi-threading is supported! The graphical user interface of Avidemux looks pretty similar to VirtualDub. The most features known from VirtualDub are available too and natively supports a great file types, such as AVI, MKV, MPEG, VOB, MP4, TS, ASF, OGM and FLV.
Avidemux cannot open raw MPEG streams. Instead, it can open indexed MPEG streams. The index is a text file containing navigation information. It is needed to allow frame accuracy.
As for MPEG streams, a NuppelVideo file has no internal index. Avidemux will rebuild it automatically upon loading (that could take some minutes).
Avidemux can also open a stream of uncompressed BMP files (RGB) or a set of JPEG files or a set of PNG files. The latest version of Avidemux can usually decode the WMV/ASF containers, there are occasionally some files that still have problems with opening or playing. If you have that problem, then you can try to place the WMV contents into an AVI container.
Multithreading has been implemented in the following areas of Avidemux (some partially through libavcodec):
- 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.
- H.264/MPEG-4 Part 10 AVC (using x264)
- H.265/HEVC (using x265)
- MPEG-1 and MPEG-2 (using libavcodec)
- MPEG-4 Part 2 SP/ASP (using libavcodec)
Changes in Avidemux 2.7.8:
- Many new video filters added by courtesy of szlldm
- A dedicated MOV muxer is now available, replacing silent fallback to MOV muxing mode within the MP4 muxer.
- A subset of color info relevant for HDR support is retained in copy mode when both input and output video are stored in Matroska / WebM containers. Settings to add or override color info have been added to MKV and WebM muxers.
- The indexer in the MPEG-TS demuxer now detects resolution changes in MPEG-2 and H.264 streams which are entirely unsupported and suggests aborting indexing. If the user chooses to continue, it records file offsets of all resolution changes to the log. This allows advanced users to split the file at these offsets using other tools like head and tail into chunks which can be processed with Avidemux.
- YUV varieties of the lossless Ut Video codec are supported now for decoding and encoding via bundled FFmpeg libraries.
- Uncompressed 24-bit audio is now supported for a subset of file formats.
- Limited support for 7.1 channel layout.
- Decode and stream copy support for XLL substream in DTS audio tracks.
- Audio properties are now updated on resuming playback. This allows to start saving after an audio format change. When audio format changes during playback, the FFmpeg-based audio decoder will output silence and keep format rather than producing garbage.
- An option to keep the identity of markers A and B instead of swapping them automatically has been added to Preferences.
- The keyboard shortcut for “Delete” action has been made customizable with alternative keyboard shortcuts enabled.
- Multi-threaded video decoding is now available for the bundled FFmpeg.
- On powerful multi-core CPUs, this can drastically improve decoding performance. A maximum of 8 threads can be created, but a conservative custom upper limit of 4 is recommended. Values above 8 cause decoding failures. Multi-threaded decoding and HW accelerated decoding are mutually exclusive, changes require application restart to have effect.
- The maximum supported resolution has been increased to 8192×8192
- The bundled FFmpeg has been updated to the 4.2.4 release.
- Non-standard display aspect ratios can be configured in MP4 muxer by specifying display width.
- MP4 muxer accepts now MPEG-1 and MPEG-2.
- The configuration dialog of the x265 video encoder plugin enjoyed massive cleanup and refactoring by Trent Piepho , more Adaptive Quatization Variance methods have been added.
- Python interface has been substantially extended, includes now methods to query segment properties, the number and filenames of loaded videos, PTS of keyframes, methods to seek to time with preview updated, to open file dialogs filtered by extension and a built-in method to split filename extension from a given path.
- Scripting shell now supports unicode characters.
- On macOS, files can be loaded via Finder context menu or by dropping them onto Avidemux icon in the dock.
- On Linux, Jobs GUI and the CLI executable can be launched from AppImage by creating a symlink with _jobs or _cli in filename respectively and running the AppImage via this symlink.
- Rate control was broken in some video encoders, especially in VP9 and in NVENC-based encoders, fixed now.
- Multiple issues in cut point checks for H.264 and HEVC streams in copy mode, leading to incorrect check results, were identified and resolved.
- The first two frames of external AC3 or EAC3 audio tracks are not dropped anymore. This regression from enhanced protection against false positives, added 3 years ago, has been finally identified and fixed.
- Indexing of MPEG-TS files with HEVC video was broken when video stream lacked access unit delimiters. The issue was identified and fixed right after 2.7.7 had been tagged as released and is the reason why version 2.7.7 was superseded by 2.7.8.
- VU meter was grossly ahead of audio output on Windows, now it is just a tiny little bit ahead.
- Numerous other fixes and overall polish.
Changes in Avidemux 2.7.6:
- New Feature:Detect and warn when cut points in HEVC video streams may result in grave playback issues despite being on keyframes
- New Video Decoder:Add libaom-based AV1 decoder
- New Video Encoder:Add libvpx-based VP9 encoder
- New Video Filter:Add hardware accelerated deinterlacer and resizer based on VA-API (Linux only)
- FFmpeg:Update to the 4.2.3 release
- Core:Increase maximum supported resolution to 4096×4096
- Core:Fix crash on macOS with HW accel. decoding enabled and H.264 video streams containing both frame- and field-encoded slices
- Encoder:Extend configuration options for NVENC-based H.264 and HEVC encoders, add 2-pass mode
- Demuxer:Support MPEG-TS files with duration in excess of 13:15:36
- Demuxer:Use DTS core from DTS XLL audio in MPEG-TS files instead of rejecting the track
- Demuxer:Fix mono MP3 audio tracks in MP4 files misdetected as stereo
- Demuxer:Try to correct timestamp jitter in MP4 files produced by older Avidemux versions
- Muxer:Fix timestamp rounding which caused pseudo-VFR output from CFR sources
- Muxer:Fix saving to network shares on Windows using the Mp4 muxer when index should be moved to the start of the file
- Muxer:Support LPCM audio in the Mp4 muxer by silently switching to the MOV muxing mode
- Muxer:Add support for Vorbis audio to the Mp4 muxer
- Filter:Fix “Fade” and “Fade to black”, broken on macOS
- Filter:Allow to toggle rubber band visibility in “Crop” and “Blacken Borders” video filters
- Filter:Fix keyboard input in “Resize” video filter by recalculating values only on moving focus to another field or on accepting dialog
- Audio:Add HE-AAC and HE-AACv2 profiles to the FDK AAC encoder plugin
- Audio:Support external audio tracks in DTS format
- UI:Fix navigation slider with RTL locales
- UI:Restore the shutdown option in encoding dialog on Windows
- Scripting:Add PTS query and keyframe seek methods to Python interface
- Miscellaneous:Allow user-defined fragment size for auto-append of chunked MPEG-TS files
- Miscellaneous:Improve handling of field-encoded video streams throughout the chain
- Miscellaneous:Improve handling of H.264 video streams with parameter sets changing on the fly
- Miscellaneous:Try to keep track of video time base throughout the chain
- Miscellaneous:Numerous other fixes and polish
Changes in Avidemux 2.7.5:
- Some support libraries were not properly generated. That led to issues with x265 and png support.
Changes in Avidemux 2.7.4:
- New Feature:Detect and warn when cut points in H.264 video streams may result in playback issues despite being on keyframes
- FFmpeg:Update to the 4.1.4 release
- Core:Fix MSVC++ builds do not run when the path to user directory contains non-ASCII characters
- Decoder:Fix DXVA2 HW accelerated decoding on Windows 7
- Decoder:Fix DXVA2 HW accelerated decoding stops sometimes on cuts* Decoder:Enable HW accelerated decoding of 8-bit HEVC for recent versions of Intel graphics driver on Windows
- Encoder:Fix regression with saved x264 and x265 profiles not found (MSVC++ only)
- Demuxer:Dynamically load VapourSynth Script library to avoid error messages on Windows if VapourSynth is not found
- Demuxer:Provide correct average audio bitrate in the Mp4 demuxer if the exact value for the particular codec is unknown
- Demuxer:Fix crash loading MP4 file with number of audio tracks exceeding the max supported
- Demuxer:Support audio tracks in fragmented MP4 files (the variety with empty moov only)
- Demuxer:Support E-AC3 audio tracks in MP4 files
- Demuxer:Fix ASF demuxer still broken by chance with MSVC++ only, the fix relevant for all platforms
- Demuxer:Support more varieties of BMP images
- Muxer:Optimize output of the Mp4 muxer for streaming on Windows too
- Muxer:Add option to the Mp4 muxer to output fragmented MP4 files
- Muxer:Label HEVC video in Mp4 in a way compatible with QuickTime on macOS
- Filter:Fix assembly in Yadif deinterlacer with MSVC++
- UI:Enable automatic application scaling on Windows for recent Qt versions
- UI:Fix silent mode, automatically confirm dialogs instead of choosing the default option
- Audio:Support WMAPRO audio codec for decoding
- Audio:Support AAC with signal band replication (SBR) in external audio tracks
- Audio:Fix saving AAC audio tracks with SBR to a file
- Audio:Improve resilience to false positives when probing external audio files for AAC
- Miscellaneous:Fix crash with OpenGL or DXVA2 video output in 32 bits Avidemux on Windows (better late than never)
- Miscellaneous:Fix regressed handling of empty frames in MPEG-4 and FRAPS video streams
- Miscellaneous:Numerous other fixes and polish
Homepage – https://avidemux.sourceforge.net/
Avidemux can be used on almost all known operating systems and computer platforms. It is available for Linux, BSD, Mac OS X and Microsoft Windows under the GNU GPL license.
Size: 39.7 MB