<p>Camtasia file format is a <strong>colsed</strong> and composed file with multiple assets and instructions called MS-CFB. The binary header does not correspond to 7zip, rar, zip or gzip. You can not conver <code>.camrec</code> from <code>ffmpeg</code> or <code>unzip</code>.</p>
<p>In Microsoft website says: <a href="https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-cfb/68530324-9d3d-4441-9ea9-66a2c8f79567" rel="nofollow noreferrer">https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-cfb/68530324-9d3d-4441-9ea9-66a2c8f79567</a></p>
<blockquote>
<p>[MS-CFB]: Compound File Binary File Format</p>
</blockquote>
<pre><code>000000: D0CF 11E0 A1B1 1AE1 0000 0000 0000 0000 ................
</code></pre>
<p>And i have a <code>.camrec</code> file for the example:</p>
<pre><code>whk@machine:~/Vídeos$ file fest.camrec;
fest.camrec: Composite Document File V2 Document, Cannot read section info
whk@machine:~/Vídeos$ head -n 16 fest.camrec | xxd;
00000000: d0cf 11e0 a1b1 1ae1 0000 0000 0000 0000  ................
</code></pre>
<p>The best option is download Camtasia Studio and install it on a Windows machine and export the project as video file format.</p>

CC BY-SA 4.0
2022-10-23T04:52:26.507Z
2022-10-23T05:04:37.730Z
2022-10-23T05:04:37.730Z
e-info128
<p>I raise such problem but in the same post I raise the solution.</p>
<p>The first thing to know is that the .camrec format (from Camtasia) is a compressed file, so we must first decompress these files before converting them to .mp4.</p>
<p>Using 7z it is possible to decompress a .camrec file, and generate a .avi:</p>
<pre><code>7z e &quot;*file.camrec&quot; &quot;file.avi&quot;
</code></pre>
<p>The second thing, is to convert this .avi file to .mp4 with ffmpeg.</p>
<pre><code>ffmpeg -i &quot;file.avi&quot; &quot;file.mp4&quot;
</code></pre>
<p>If someone has a better solution I invite you to post it here.</p>

<ffmpeg><mp4><avi>
How to convert camrec to mp4 using ffmpeg?
GIO
# How to convert camrec to mp4 using ffmpeg?

(Asked by: username_0 on 2022-08-09)

I raise such problem but in the same post I raise the solution.
The first thing to know is that the .camrec format (from Camtasia) is a compressed file, so we must first decompress these files before converting them to .mp4.
Using 7z it is possible to decompress a .camrec file, and generate a .avi:
7z e "*file.camrec" "file.avi"

The second thing, is to convert this .avi file to .mp4 with ffmpeg.
ffmpeg -i "file.avi" "file.mp4"

If someone has a better solution I invite you to post it here.

**Tags:** ffmpeg, mp4, avi


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## 1 answers

### Answer by username_1 on 2022-10-23. Score: 1

Camtasia file format is a colsed and composed file with multiple assets and instructions called MS-CFB. The binary header does not correspond to 7zip, rar, zip or gzip. You can not conver .camrec from ffmpeg or unzip.
In Microsoft website says: https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-cfb/68530324-9d3d-4441-9ea9-66a2c8f79567

[MS-CFB]: Compound File Binary File Format

000000: D0CF 11E0 A1B1 1AE1 0000 0000 0000 0000 ................

And i have a .camrec file for the example:
whk@machine:~/Vídeos$ file fest.camrec;
fest.camrec: Composite Document File V2 Document, Cannot read section info
whk@machine:~/Vídeos$ head -n 16 fest.camrec | xxd;
00000000: d0cf 11e0 a1b1 1ae1 0000 0000 0000 0000  ................

The best option is download Camtasia Studio and install it on a Windows machine and export the project as video file format.


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