user1571: I have a video that has 4 up-down-left-right black borders of different sizes.  
I want to get rid of these black borders so the exported file has the exact size of the cropped area.
To do this, I used the "crop" effect (I would have preferred a tool that allows me to set the crop dimensions in pixels, but I guess that's not supported). But then I had a problem when exporting the video:
I'd like to be able to keep a hand on the parameters of the exported video, and ensure that the video will have the exact resolution of the cropped area. But I could not accomplish this.
Can someone tell me how to do this?
EDIT:
My source video is 1002 x 720 (so it's in landscape mode)
It contains a 316 x 562 portion I want to extract  (so, portrait mode)
The minimum I want is to be able to obtain a 316 x 562 video containing just the cropped section. The best I could obtain is a 632 x 1124 (or any other proportional scale) video on output.

user19185: I had the same basic problem, but mine was a little more complex.  I shot all the video footage on the same camera, and didn't need to crop any of the clips except the welcome speech clip.  I didn't realize it at the time, but in the frame was a kid picking his nose and eating his discoveries, not once but four times!  So I had to crop the whole frame, and then resize it so it would be the same size as the rest of the clips.  Here's what I did:
I opened up the clip I needed to crop in Premiere Pro, just that clip.  I cropped it by holding down the shift key to keep the proper proportions,  went to File - Export, and then Source in the upper left.  I cropped the black edges out again, and processed the video.  Once that was done, I imported the clip into the video I was working on, went back to the same time stamp in that clip as it was before, and inserted the clip right into where the original clip was with the nose picking going on.
There may be easier and faster ways to do this, but this worked for me, and I hope it will work for you, too.

user32542: Summarizing what I learned from this page and the steps I ended up taking to crop & make a new clip at that exact size:
Crop Video & Export at that exact new size
(e.g. for getting rid of any unwanted black bars):
Import video into Project Panel.
Drag onto Timeline Window to create a Sequence.
Choose In/Out points. (“i” and “o” keys)
File > Export > Media
Export Settings: Go to top left, click “Source” (so it’s blue), the Crop sign shows, and you can adjust your desired crop section right there, dragging the crop lines or via precise pixel info. Video & adjustments should be visible.
At the bottom of that window set Source Range to “Sequence In/Out,” so Premiere is only working on the segment you actually want.
On the right, within the same Export Settings window, you may have to enter the new video dimensions, after deducting the pixels that you ended up cropping out in the left side of the window. Then on the right side, under “Video,” find “Basic Video Settings,” Width and Height, make sure to UN-check those check marks that would force you to keep the old/original dimensions and image ratio. Then enter the new pixel info.
Scroll that same window up to get to the (currently still undisplayed) Bitrate Settings and choose the appropriate Bitrate.
(etc.)
Double-check in the right side of the window under “Summary” - “Output” that all the values are correct.
Then Export.
This will give you the cropped video as intended, in the new specified format size.

user5743: Oliver, have you tried changed your sequence settings to the new dimensions?
You can also restrict/define dimensions in the export settings under 'Basic Video Settings'.
Hope this helps!

user2836: I would probably approach it by first measuring the size of the area that you want to crop to.  This can be done by exporting a frame of the image and cropping in another program (like Photoshop).  
I would then create a sequence based on the other settings of the video, but alter the resolution of the sequence to be that of the portion of the video you want.  
After that, you should be able to bring in the video to the sequence.  By default, it will be come in at 100% of it's size.  It may not be perfectly centered in your frame though, so use the Motion settings under the effects control to position the actual video portion in the center of the frame.
You should then simply be able to export and the outside potions will be cropped off without any scaling.
This may seem a bit complicated, but it is the simplest way to do it since the default behavior is to fit the sequence to the size of the original clip and cropping doesn't do anything to change the sequence size.  That's why we have to start with the correct sequence size and when we have that, no crop effect is needed as only the content we want fits in the sequence.

user17346: I think I've found the easiest way!

Just crop the area you want.
Go to the Export window without worrying about the black margins showing.
Set the final resolution and export settings as you would want.
(THIS IS THE IMPORTANT ONE) On the top left of the Export Window, there are two tabs; SOURCE and OUTPUT. Go to the Source Tab.
On the left-most side, find the crop icon and activate it.
Now, MANUALLY crop the black margins out AGAIN.
Proceed to export. 

I've been worrying about it all day and I am so happy now!
Thank you guys for the other answers that put me in the right direction.

user6643: I found that using Adobe Media Encoder is much easier when just cropping.
Add the video to the queue and open the export settings.
On the source tab you can crop the video and there you can also enter how many pixels to remove at each side.
Remember to set the correct output size in the video tab on the right side.
Here is a screenshot showing how i did it:


1571: <p>I have a video that has 4 up-down-left-right black borders of different sizes.  </p>

<p>I want to get rid of these black borders so the exported file has the exact size of the cropped area.</p>

<p>To do this, I used the "crop" effect (I would have preferred a tool that allows me to set the crop dimensions in pixels, but I guess that's not supported). But then I had a problem when exporting the video:</p>

<p>I'd like to be able to keep a hand on the parameters of the exported video, and ensure that the video will have the exact resolution of the cropped area. But I could not accomplish this.</p>

<p>Can someone tell me how to do this?</p>

<p><strong>EDIT:</strong><br>
My source video is 1002 x 720 (so it's in landscape mode)
It contains a 316 x 562 portion I want to extract  (so, portrait mode)<br>
The minimum I want is to be able to obtain a 316 x 562 video containing just the cropped section. The best I could obtain is a 632 x 1124 (or any other proportional scale) video on output.</p>
 19185: <p>I had the same basic problem, but mine was a little more complex.  I shot all the video footage on the same camera, and didn't need to crop any of the clips except the welcome speech clip.  I didn't realize it at the time, but in the frame was a kid picking his nose and eating his discoveries, not once but four times!  So I had to crop the whole frame, and then resize it so it would be the same size as the rest of the clips.  Here's what I did:</p>

<p>I opened up the clip I needed to crop in Premiere Pro, just that clip.  I cropped it by holding down the shift key to keep the proper proportions,  went to File - Export, and then Source in the upper left.  I cropped the black edges out again, and processed the video.  Once that was done, I imported the clip into the video I was working on, went back to the same time stamp in that clip as it was before, and inserted the clip right into where the original clip was with the nose picking going on.</p>

<p>There may be easier and faster ways to do this, but this worked for me, and I hope it will work for you, too.</p>
 32542: <p>Summarizing what I learned from this page and the steps I ended up taking to crop &amp; make a new clip at that exact size:</p>
<p>Crop Video &amp; Export at that exact new size
(e.g. for getting rid of any unwanted black bars):</p>
<p>Import video into Project Panel.</p>
<p>Drag onto Timeline Window to create a Sequence.</p>
<p>Choose In/Out points. (“i” and “o” keys)</p>
<p>File &gt; Export &gt; Media</p>
<p>Export Settings: Go to top left, click “Source” (so it’s blue), the Crop sign shows, and you can adjust your desired crop section right there, dragging the crop lines or via precise pixel info. Video &amp; adjustments should be visible.</p>
<p>At the bottom of that window set Source Range to “Sequence In/Out,” so Premiere is only working on the segment you actually want.</p>
<p>On the right, within the same Export Settings window, you may have to enter the new video dimensions, after deducting the pixels that you ended up cropping out in the left side of the window. Then on the right side, under “Video,” find “Basic Video Settings,” Width and Height, make sure to UN-check those check marks that would force you to keep the old/original dimensions and image ratio. Then enter the new pixel info.</p>
<p>Scroll that same window up to get to the (currently still undisplayed) Bitrate Settings and choose the appropriate Bitrate.</p>
<p>(etc.)</p>
<p>Double-check in the right side of the window under “Summary” - “Output” that all the values are correct.</p>
<p>Then Export.</p>
<p>This will give you the cropped video as intended, in the new specified format size.</p>
 5743: <p>Oliver, have you tried changed your sequence settings to the new dimensions?</p>

<p>You can also restrict/define dimensions in the export settings under 'Basic Video Settings'.</p>

<p>Hope this helps!</p>
 2836: <p>I would probably approach it by first measuring the size of the area that you want to crop to.  This can be done by exporting a frame of the image and cropping in another program (like Photoshop).  </p>

<p>I would then create a sequence based on the other settings of the video, but alter the resolution of the sequence to be that of the portion of the video you want.  </p>

<p>After that, you should be able to bring in the video to the sequence.  By default, it will be come in at 100% of it's size.  It may not be perfectly centered in your frame though, so use the Motion settings under the effects control to position the actual video portion in the center of the frame.</p>

<p>You should then simply be able to export and the outside potions will be cropped off without any scaling.</p>

<p>This may seem a bit complicated, but it is the simplest way to do it since the default behavior is to fit the sequence to the size of the original clip and cropping doesn't do anything to change the sequence size.  That's why we have to start with the correct sequence size and when we have that, no crop effect is needed as only the content we want fits in the sequence.</p>
 17346: <p>I think I've found the easiest way!</p>

<ol>
<li>Just crop the area you want.</li>
<li>Go to the Export window without worrying about the black margins showing.</li>
<li>Set the final resolution and export settings as you would want.</li>
<li>(THIS IS THE IMPORTANT ONE) On the top left of the Export Window, there are two tabs; SOURCE and OUTPUT. Go to the Source Tab.</li>
<li>On the left-most side, find the crop icon and activate it.</li>
<li>Now, MANUALLY crop the black margins out AGAIN.</li>
<li>Proceed to export. </li>
</ol>

<p>I've been worrying about it all day and I am so happy now!
Thank you guys for the other answers that put me in the right direction.</p>
 6643: <p>I found that using Adobe Media Encoder is much easier when just cropping.
Add the video to the queue and open the export settings.
On the source tab you can crop the video and there you can also enter how many pixels to remove at each side.
Remember to set the correct output size in the video tab on the right side.</p>

<p>Here is a screenshot showing how i did it:
<img src="https://i.stack.imgur.com/EGy8w.png" alt="Here is a screenshot showing how i did it"></p>
