user35955: Source: Quicktime movie or MP4 container which has chapter markers.
Intended output: Plain text for use in YouTube or similar services. Chapter start time code as (HH:)MM:SS at the beginning of the line followed by the chapter name.
00:00 Intro
00:30 Another Chapter
02:00 Fin


user35955: LosslessCut (GUI for ffmpeg and ffprobe, multi-platform, free)

Open video file with video markers.
A dialog opens:


This file has embedded chapters. Do you want to import the chapters as cut-segments?


Click "Import chapters"


Menu > File > Export project > Start times as Youtube Chapters
A dialog with a multi line text area opens:


Copy the desired chapter names and timecodes
Offers a "copy all" button for your convenience too.






35955: <p><strong>Source</strong>: Quicktime movie or MP4 container which has chapter markers.</p>
<p><strong>Intended output</strong>: Plain text for use in YouTube or similar services. Chapter start time code as (HH:)MM:SS at the beginning of the line followed by the chapter name.</p>
<pre><code>00:00 Intro
00:30 Another Chapter
02:00 Fin
</code></pre>
 35955: <p><a href="https://mifi.no/losslesscut/" rel="nofollow noreferrer">LosslessCut</a> (GUI for ffmpeg and ffprobe, multi-platform, free)</p>
<ol>
<li>Open video file with video markers.</li>
<li>A dialog opens:</li>
</ol>
<blockquote>
<p>This file has embedded chapters. Do you want to import the chapters as cut-segments?</p>
</blockquote>
<ul>
<li>Click &quot;Import chapters&quot;</li>
</ul>
<ol start="3">
<li>Menu &gt; File &gt; Export project &gt; Start times as Youtube Chapters</li>
<li>A dialog with a multi line text area opens:</li>
</ol>
<ul>
<li>Copy the desired chapter names and timecodes</li>
<li>Offers a &quot;copy all&quot; button for your convenience too.</li>
</ul>
<hr />
<img src="https://i.stack.imgur.com/e4qkZ.png" width="240" alt="LossLessCut chapter markers 2 Import dialog">
<img src="https://i.stack.imgur.com/4YuaI.jpg" width="240" alt="LossLessCut chapter markers 3 Export start time as YouTube chapters">
<img src="https://i.stack.imgur.com/Orwyg.png" width="240" alt="LossLessCut chapter markers 4 Copy timecode and chapters">
