Avidemux Forum

Blues,

If you don't reencode, then the video plays back with the aspect ratio that the metadata dictates on stand alone, 3rd party players, but not with browsers. There is no problem.  But if you reencode AVIDemux starts by treating the pixels as square.  You can stretch or squash them to whatever is correct, or you can force to set the AR metadata to do whatever you like.  The forced metadata container resize option is a little tricky to find inside the encoding setup and it depends on which video codec you are using.

I have a calculator that lets you reset forced AR in the metadata if you really want to do it at the bottom of this page: https://www.producerelease.com/blu-ray/parcalc.htm#wrapprcalc

Is there any player nowadays which ignores container metadata? I don't think so. IMHO that's the way to go instead of re-coding.

May I recommend building it for yourself? It is not hard and the resulting binaries have never crashed for me. IMHO nothing beats locally built software, using compiler optimizations for your CPU. I run Gentoo, BTW, over 21 years now. An OS that never crashed on me, except some very rare hardware lockups.

Adding an external AC3 6 channel to a project, this has happened several times:

1) open project and save in copy mode 6 channel AC3 audio
2) execute some edits to the video
3) add back in the external, unmolested 6 channel AC3 audio
4) encode both audio and video

The audio becomes muffled, skewed to the right channels.
Encoding the original internal track is fine. The problem is only with adding the external track.

Workaround, use mkvtoolnix, remux the encoded video with the original source file, then encode the audio in avidemux and the result is fine.

Audio samples attached.

https://we.tl/t-vrNluaaFIl

Hello everyone, latest build was avidemux_r240316 from Mar 16 2024. When we can expect newest version on https://www.avidemux.org/nightly?

Bonjour, et excusez moi d'abord pour avoir répondu si tard.

J'avais relancé un encodage et Xubuntu s'était encore bloqué.

Je vous donne en lien les deux fichiers : https://we.tl/t-bw5MdHDujt
(le script de job, et le retour de l'encodage).

Bonne journée à vous et merci !

The MP4v2 (libmp4v2-based) muxer is obsolete and effectively unmaintained, the supported MP4 (libavformat-based) one is the way to go.

Quote from: samsonwilliams on May 08, 2024, 07:56:35 AMI used to have an older Version where there was MP4v2 Muxer that did not have this error

You haven't provided any info about an error you experience.

In any case, please try the latest 2.8.2 nightly build and, if the problem persists, please launch Avidemux, reproduce the error, close Avidemux (do not launch it again yet, else the log will be overwritten) and attach Avidemux log file (admlog.txt from %localappdata%\avidemux on Windows) to your reply. You may consistently anonymize paths and file names contained in the log. If the file is too large, compress it or use a service like Pastebin, WeTransfer, Mega, Dropbox or Google Drive.

Avidemux always displays videos as coded using square pixels. No stretching / squeezing specified at the VUI (video usability information) or at container metadata level. This is by design, you are not doing anything wrong except for expecting Avidemux to act as a video player.

If the result after editing has wrong proportions when played in a video player, you need either to specify an anamorphic display in muxer configuration ("force display ratio"), specify it (additionally) in encoder configuration when re-encoding or resize the video to square pixels which implies re-encoding (this time without need to do anything with VUI parameters).

Hi,
Sorry to bother with a dumb question:
I have a TV show that I want to edit a couple of things, when I drag the file into avidemux, it's very stretched looking. As if avidemux is seeting it as 16:9 when it's 4:3? This is DURING editing. I understand that I can force aspect to 4:3... but it's ALREADY 4:3.. I just don't understand why it's showing as 16:9 in the actual program. Am I doing something wrong? Thanks

Copy mode several OBS created MKV files loaded directly into avidemux, copy mode, no cuts trying to make them into MP4 with the MP4 Muxer + Move index to the beginning of the file.

I used to have an older Version where there was MP4v2 Muxer that did not have this error, but I am on a new system now and find it hard to find where the older versions are.