Recover Kazam mux file to mp4

[rizmut]

From this question I see you to try your project. But actually I have zero undestanding about media format. How to do that exactly in command?

[bartwr]

If you did not finish your Kazam screen recording, you'll have an 0 bytes .movie file and a .movie.mux file with a bigger size. See screenshot below.

To make use of mp4fixer for recovering the video file from the .mux file, you need to do the following:

1. Run Kazam again and this time finish the video.

Now you have three files:

• badvideo.movie
• badvideo.movie.mux
• goodexamplevideo.movie

Now, by following the README of this project, you can rebuild the movie file from the .movie.mux file:

perl fixer.pl goodexamplevideo.movie badvideo.movie.mux recovered

The new generated file recovered-out-video.h264 will be the recovered video file. Getting sound is explained in the README as well.

[lamidesbetes]

Don't forget to install ffmeg ;)

sudo apt install ffmpeg

(Moreover, using sudo for the perl command can make it works:VLC can't read it but youtube can upload it)

[rizmut]

Hello, I have encountered similar problem, but now I can not file the .mux file. The issue occured when I tried to save Kazam video but the Save button in file choose dialog did not work. I canceled the operation but Kazam window still opened with grayed out color. Then I close the dialog and got Kazam to the first state. I am not sure I have to report to Kazam dev or not but my question with regarding your amazing tools is there any chance I can recover my file?

This is my "saved" file. I can not open it with VLC

[paulomp90]

Hello, I have encountered similar problem, but now I can not file the .mux file. The issue occured when I tried to save Kazam video but the Save button in file choose dialog did not work. I canceled the operation but Kazam window still opened with grayed out color. Then I close the dialog and got Kazam to the first state. I am not sure I have to report to Kazam dev or not but my question with regarding your amazing tools is there any chance I can recover my file?

This is my "saved" file. I can not open it with VLC

We're you able to recover? I had an error when i was recording, but I feel I will lose everything :/

[Setigi3]

Hello!

I need some help. I followed the procedure step by step but the recovery.h264 file has 0 bytes which means I cannot convert it to mp4.

Can someone please suggest a solution?

[rizmut]

Hello, I have encountered similar problem, but now I can not file the .mux file. The issue occured when I tried to save Kazam video but the Save button in file choose dialog did not work. I canceled the operation but Kazam window still opened with grayed out color. Then I close the dialog and got Kazam to the first state. I am not sure I have to report to Kazam dev or not but my question with regarding your amazing tools is there any chance I can recover my file? This is my "saved" file. I can not open it with VLC

We're you able to recover? I had an error when i was recording, but I feel I will lose everything :/

Yes, just simply convert this file to MP4 with VLC, it solved my problem

[vmlnayak]

Hello!

I need some help. I followed the procedure step by step but the recovery.h264 file has 0 bytes which means I cannot convert it to mp4.

Can someone please suggest a solution?

[Setigi3]

@vmlnayak , I wound up installing ffmpeg before running the perl command. sudo apt install ffmpeg

Make sure you do that first.

[jguillem]

I have been able to retrieve the video from kazam, but it has no audio. What have you done to get it back?

[vmlnayak]

I missed that video

On Tue, 30 Mar, 2021, 9:53 PM jguillem, @.***> wrote:

I have been able to retrieve the video from kazam, but it has no audio. What have you done to get it back?

— You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub https://github.com/bookkojot/mp4fixer/issues/6#issuecomment-810399694, or unsubscribe https://github.com/notifications/unsubscribe-auth/APIIAVONFCPMCWILBAQ6DGLTGH3JRANCNFSM4FQEQC6Q .

[Setigi3]

First I have used this website https://h264-to-mp4.file-converter-online.com/ to convert h264 to mp4 thn I have used vlc to merge the video and audio (recored raw audio).

You can do so following this video: https://www.youtube.com/watch?v=3h_Iq3a7ul8

[jguillem]

In my case I only hear noises with the raw audio file recovered. I convert the h264 to mp4 with ffmpeg and I have the video without audio. The raw audio file (recovered-out-audio.raw) is inaudible (only noises). I'm not able the raw audio file recovered to mp3 with the aacfixer executable or change the extension to mp3, and if I try to merge the raw with the mp4 with VLC, I only hear noises.

[Arof2]

Hi there. I followed the procedure but i encountered an Error saying: Only ACC streams can ne muxed by the ADTS muxer Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument I'm clueless of what to do next as no one else seems to have encountered this error. For some reason only 4 files were created which do not include the audio or video file i need. These files are: recovered-headers.acc, recovered-headers.h264, recovered-nals.txt, recovered-stat.mp4. My two original files are labeled: kazam_0l245qzg.movie kazam_0l245qzg.movie.mux I dont have any experience with corrupted files so i dont know what the error message means. I hope someone can help me. Thx

[amzker]

guys, i don't even have mux files in my save location

[caiot5]

Yeah, it works, but the video gets artifacts where it was supposed to be static images, it shows where the image changes but the part of image which is static keeps frozen onscreen. So I guess that's something to do with mp4 compression, it should be fixable, but I don't know how.