user32765: ie.,
a)If I want to keep from 10 seconds to 20 seconds of the video then I should be able type “10” , “20”;
b)I don’t want 21 to 35 seconds;
c)If I want from 36 to 43 seconds of the video then I should be able type “36” , “43”?
d) combine (a) & (b)
You might be wondering why I require to type the numbers ?
This is because , if I don't type the timeline numbers. the clipping is not very accurate. In  YouCut Android App this option is there. But not 100%. Similar thing I am looking for in Windows for free.

user31818: the ffmpeg commands are
ffmpeg -y -i Sony_HDR_AX2000.mts -ss 10 -to 20 -c copy out_a.ts

for the case of a), and
ffmpeg -y -i Sony_HDR_AX2000.mts -ss 36 -to 43 -c copy out_b.ts

for the case of c)
Then, prepare a list.txt file as
# this is a comment
file './out_a.ts'
file './out_b.ts'

the ffmpeg concat files command is
ffmpeg -y -f concat -safe 0 -i list.txt -c copy out_d.ts

for case d)
References:

https://trac.ffmpeg.org/wiki/Seeking
https://trac.ffmpeg.org/wiki/Concatenate


32765: <p>ie.,</p>
<p>a)If I want to keep from 10 seconds to 20 seconds of the video then I should be able type “10” , “20”;</p>
<p>b)I don’t want 21 to 35 seconds;</p>
<p>c)If I want from 36 to 43 seconds of the video then I should be able type “36” , “43”?</p>
<p>d) combine (a) &amp; (b)</p>
<p>You might be wondering why I require to type the numbers ?
This is because , if I don't type the timeline numbers. the clipping is not very accurate. In  YouCut Android App this option is there. But not 100%. Similar thing I am looking for in Windows for free.</p>
 31818: <p>the ffmpeg commands are</p>
<pre><code>ffmpeg -y -i Sony_HDR_AX2000.mts -ss 10 -to 20 -c copy out_a.ts
</code></pre>
<p>for the case of a), and</p>
<pre><code>ffmpeg -y -i Sony_HDR_AX2000.mts -ss 36 -to 43 -c copy out_b.ts
</code></pre>
<p>for the case of c)</p>
<p>Then, prepare a <em>list.txt</em> file as</p>
<pre><code># this is a comment
file './out_a.ts'
file './out_b.ts'
</code></pre>
<p>the ffmpeg concat files command is</p>
<pre><code>ffmpeg -y -f concat -safe 0 -i list.txt -c copy out_d.ts
</code></pre>
<p>for case d)</p>
<p>References:</p>
<ul>
<li><a href="https://trac.ffmpeg.org/wiki/Seeking" rel="nofollow noreferrer">https://trac.ffmpeg.org/wiki/Seeking</a></li>
<li><a href="https://trac.ffmpeg.org/wiki/Concatenate" rel="nofollow noreferrer">https://trac.ffmpeg.org/wiki/Concatenate</a></li>
</ul>
