user30312: For each frame I want to crop multiple areas using ffmpeg but I am not sure how to proceed.
This is what I have done to crop one part of the image,
fmpeg -i video.mp4 -filter:v "fps=1,crop=759:41:33:99,scale=128:44" %d.png

This is one frame of the video,

The above command crops the number one row or first position from the image. Likewise I want to crop all the positions or rows from this frame.

user1871: Add more outputs.
ffmpeg -i video.mp4 -filter:v "fps=1,crop=759:41:33:99,scale=128:44" row1-%d.png -filter:v "fps=1,crop=759:41:33:140,scale=128:44" row2-%d.png -filter:v "fps=1,crop=759:41:33:181,scale=128:44" row3-%d.png

Or do one row per command.

30312: <p>For each frame I want to crop multiple areas using ffmpeg but I am not sure how to proceed.</p>
<p>This is what I have done to crop one part of the image,</p>
<pre><code>fmpeg -i video.mp4 -filter:v &quot;fps=1,crop=759:41:33:99,scale=128:44&quot; %d.png
</code></pre>
<p>This is one frame of the video,</p>
<p><a href="https://i.stack.imgur.com/7kH74.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/7kH74.jpg" alt="enter image description here" /></a></p>
<p>The above command crops the number one row or first position from the image. Likewise I want to crop all the positions or rows from this frame.</p>
 1871: <p>Add more outputs.</p>
<pre><code>ffmpeg -i video.mp4 -filter:v &quot;fps=1,crop=759:41:33:99,scale=128:44&quot; row1-%d.png -filter:v &quot;fps=1,crop=759:41:33:140,scale=128:44&quot; row2-%d.png -filter:v &quot;fps=1,crop=759:41:33:181,scale=128:44&quot; row3-%d.png
</code></pre>
<p>Or do one row per command.</p>
