Avidemux 2.6.21

4.2 out of 5 stars 4.2 (165 votes)


Mac, Unix, Windows 7/8/10/Vista / Open Source / 8,239 downloads

Avidemux is a free video editor designed for simple cutting, filtering and encoding tasks. It supports many file types, including AVI, DVD compatible MPEG files, MP4 and ASF, using a variety of codecs. Tasks can be automated using projects, job queue and powerful scripting capabilities.

Reviews of Avidemux

  1. 1 out of 5 stars

    Reviewing 2.6.8 (Mar 13, 2014)

    Well, despite Avidemux 2.6.8's long list of bug fixes, the TV/PVR .MPG audio sync bug is STILL NOT FIXED in this version (see my review for 2.6.7 below).

    This is a truly serious bug in Avidemux, and a peculiar one at that. Peculiar, because I cannot find a single media player that actually plays these MPG files incorrectly in their unedited form! However, after the simplest Avidemux edit, they're all stuffed!

    (That's to say media players such as MPC-HC, VLC, MPlayer, WMP, et al, play the files perfectly--i.e.: with absolutely NO audio/lip sync problem but AFTER they're edited with Avidemux all these players play them with the audio out of sync.)

    [FYI, below is a MediaInfo's properties list of one of these MPG files.]

    Yet, Avidemux 2.6.8--even in its 'player mode' (before any editing)--plays every one of these MPG files completely out of lip sync. The audio is out of sync by at least 350 to 500 ms (depending on file). This means that if one uses Avidemux, then even the simplest of edits has to be done manually using the offset, which is a real pain unless you've a clapper sync point (which is not often the case on TV/PVR programs).

    Forget Avidemux, there's just far too much wrong with it!

    (Buy a cheap program such as VideoRedo - http://www.videoredo.com/en/index.htm. It edits perfectly without a trace of out-of-sync audio on these MPEGs. Which also proves there's nothing essentially wrong with any of these MPEGs. )


    Typical MPEG file properties for files that Avidemux 2.6.x cannot audio sync:

    Complete name : C:\AVI\TEST\000.mpg
    Format : MPEG-PS
    File size : 2.98 GiB
    Duration : 1h 31mn
    Overall bit rate mode : Variable
    Overall bit rate : 4 668 Kbps

    ID : 224 (0xE0)
    Format : MPEG Video
    Format version : Version 2
    Format profile : Main@Main
    Format settings, BVOP : Yes
    Format settings, Matrix : Custom
    Format settings, GOP : Variable
    Duration : 1h 31mn
    Bit rate mode : Variable
    Bit rate : 4 319 Kbps
    Maximum bit rate : 10 000 Kbps
    Width : 720 pixels
    Height : 576 pixels
    Display aspect ratio : 16:9
    Frame rate : 25.000 fps
    Standard : PAL
    Color space : YUV
    Chroma subsampling : 4:2:0
    Bit depth : 8 bits
    Scan type : Interlaced
    Scan order : Top Field First
    Compression mode : Lossy
    Bits/(Pixel*Frame) : 0.417
    Time code of first frame : 02:42:46:22
    Time code source : Group of pictures header
    Stream size : 2.76 GiB (93%)

    ID : 192 (0xC0)
    Format : MPEG Audio
    Format version : Version 1
    Format profile : Layer 2
    Duration : 1h 31mn
    Bit rate mode : Constant
    Bit rate : 256 Kbps
    Channel(s) : 2 channels
    Sampling rate : 48.0 KHz
    Compression mode : Lossy
    Delay relative to video : -393ms **
    Stream size : 168 MiB (5%)

    ** Note the delayed audio.

  2. 1 out of 5 stars

    Reviewing 2.6.7 (Dec 15, 2013)

    There are very significant bugs in Avidemux 2.6.6 and 2.6.7 (I've not tested earlier versions). These bugs have to do with audio/video sync of .mpg files.

    Certain .mpg files which work and sync AOK in all common players such as VLC, MPC-HC etc., (and edit fine in other editors) play out of sync in Avidemux--even in the view mode before an edit is commenced. Essentially, Avidemux is broken before it even starts an edit.

    This bug is so bad and significant I thought I was going a bit crazy. In a facetious post on the videohelp forum I sought help to which I received good suggestions which proved Avidemux is at fault. See dialog here:


    Another downer is that I could not find a feedback link on the Avidemux web site to even report the bug! If one can't easily report bugs then this product is just too problematic to even consider.

    It seems this bug is the same or very similar to that which Aegis69 has experienced. Clearly, the Avidemux developers don't read these reviews -- as it's now quite some months and a point version later since Aegis69 posted his comment.

  3. 4 out of 5 stars

    Reviewing 2.6.6 (Sep 30, 2013)

    I hope they fix the sound issue, whenever I make edits and do a direct copy save, the sound goes out of sync every time unless I re-encode the audio.

  4. 5 out of 5 stars

    Reviewing 2.6.4 (May 13, 2013)

    Excellent software.

    Regarding documentation, you can check this link http://www.avidemux.org/admWiki/doku.php

  5. 4 out of 5 stars

    Reviewing 2.6.4 (May 10, 2013)

    I realize that this software is powerful but it's also difficult to use.
    Is there a guide somewhere?

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