I'm on Ubuntu 14.04. I used Kazam to record a video of my desktop (a Hangouts chat) After I was done, I clicked "finish recording" and I did not get the pop-up asking me to rename and save file. So I hit "quit" , and still did not get the prompt. Now it seems the video is gone. I can't find a Kazam folder on my file desktop, and it's certainly not in video folder, but is it possible that it could be stored in a deep folder somewhere? I haven't shut down my computer yet, hoping it's somewhere temporarily cached, at least. I used Kazam yesterday, for this exact same purpose, and it worked perfectly. Perhaps because the screencast today was over an hour? I'm not very familiar with Kazam. I just started using it last week.

EDIT: It appears after much googling, that there are a number of bug reports concerning this exact behavior( no pop-up window, asking how to save) I still can't find if there is a tmp file location that may have the video sitting somewhere. I'm trying to find if I can resurrect the file, before shutting down my computer, because I'm sure once I reboot, the possibility of saving it will be gone ( if not already)

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    I also had this happen to me today. I am hoping you figured it out and can tell me what the solution was. – Erin Ishimoticha Sep 28 '16 at 15:59
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    @Erin Sorry to say, I never did. I changed my settings to "auto save" from now on. But as far as that video, I lost it for good. – 5th Wheel Sep 28 '16 at 16:49
  • i found this aout movie.mux files (perl) video.stackexchange.com/questions/22279/… – lamidesbetes Jul 12 '20 at 17:09

This worked for me:

  1. Download the perl script
  2. install ffmpeg
  3. try sudo for the perl command

VLC can't read the mp4 but youtube can upload and read it


The same happened to me when using Kazam, recording a long video, and I was able to find and recover the files. I wrote the step by step in this post:


Basically, I converted the unfinished temp .mux file into .h264 video file and raw audio file using the mp4fixer utility, and ffmpeg utility to convert into .mp4 video + audio file.

It doesn't matter if you shut down your computer, the files wont be deleted.

Good luck!

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