Image offset only applies to single frame and not to metastrip I put a series of images in the Video Editor but they get scaled to fit the render size. To prevent that i click "Image offset" and that puts the original dimensions back. However it only does it for a single image frame.
If I metastrip the image sequence and apply "Image offset" to it, the dimensions are not brought back. 

So I would need to apply the option to every single frame manually....very inconvenient.....is there some command to apply the setting to every selected frame?

Note: I tried scaling up the strip to the correct ratio, but i notice a signficant loss in Image quality, when comparing 2 identical strips with the 2 techniques..the Image offset retains the frame detail, while scaling up degrades the image..
You will need to activate a Sequencer addon, that comes included with the official Blender download. 
Extra Sequencer Actions https://wiki.blender.org/index.php/Extensions:2.6/Py/Scripts/Sequencer/Extra_Sequencer_Actions

Change one image to the Offset value you want, then select all the other images and include the changed image last, eg. shift right-click to make this last one active.

Go down to the Strip Menu in the VSE timeline and select Copy Properties > Input - Image Offset



Now all of the other images will inherit the setting from the active strip.