Avidemux Forum

The MP4v2 (libmp4v2-based) muxer is obsolete and effectively unmaintained, the supported MP4 (libavformat-based) one is the way to go.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

Quote from: jimmyjim on February 10, 2024, 03:10:15 PMIf you are using python (i've never used it), I recommend asking the user for the csv file and reading the csv file into the script: https://www.w3schools.com/python/python_file_handling.asp

Also, if you are using loselesscut to get the timestamps, why not just cut the video with it?

Hi Jimmyjim, thanks for your imformation. As I tried, the tiny python script in Avidemux do not support to read from .csv or .txt files (or maybe only my version can't). And for the second question, Losslesscut is powerful but it doesn't support as more formats as Avidemux. Some of my friends cutting from .ts files, there are sometimes problem with the sounds (not going correctly with the frames).

Quote from: Drakon66 on May 04, 2024, 09:16:28 PMI hope option with reencoding not reduce quality.

- did you try this?:

Quote from: Geo_log on May 01, 2024, 02:58:13 PM1) Append 2nd video;
2) "Video Output" -> "Configure" -> Encoding Mode = Video Size (Two Pass) = Vid1 + Vid2 [Mb];
3) Save video.

How good or bad is the resulting quality?

Installing 2.8.2 build 240324 there is no longer a problem opening files on the network. Thanks!

Please verify that the problem exists with the latest available 2.8.2 nightly build (which is also quite old, I need to update translation files and request a refresh). The 2.8.1 release has become long in the tooth, really ancient.

Just recently upgraded to 2.8.1. A bit late, I know . There was no problem with 2.8.0 to open files from NAS drive on my network (i.e. without mapping to windows letter E: or similar). With 2.8.1 this can no longer be done. "Could not open the file". I can find no setting. It does not matter whether I drag and drop or select File, Open... The question has been asked for another version long time ago https://avidemux.org/smif/index.php/topic,11726.msg61237.html

What is the problem and how do I fix it?

That's understandable.  Just spit-balling an idea.  I'm not as savvy a user as many here, so I have to research tweaking settings when I veer from default(s).  Anyway, new nightly version is awesome.  Thanks again to all those who work  hard on the application.  Peace