video - Faster image export with ffmpeg

In my application the user can seek to a specific position (media.currentPosition), then press the save button, the image will then be exported, here is my ffmpeg command I'm using to achieve this:

"-i",Video.mp4,"-filter_complex","[1:v][0:v]scale2ref=iw:ih[ovr][base];[ovr]colorchannelmixer=aa=0.7[ovrl];[base][ovrl]overlay[v]","-map","[v]","-ss",GetPositionInVideo,"-vframes","1","-q:v","2", "-preset", "ultrafast",directoryToStore+"/"+"Image.jpg"};

It is a android application so that is way it is in a string array. The command works perfectly BUT it takes forever to complete.

In my log it will show this repeatedly:

[Progress]: frame=    0 fps=0.0 q=0.0 size=N/A time=00:00:00.00 bitrate=N/A speed=   0x

until the frame is reached, then it shows this:

[Progress]: frame=    1 fps=0.0 q=2.0 Lsize=N/A time=00:00:00.04 bitrate=N/A speed=0.00151x  

it then instantly finishes.

So what I think is happening is, ffmpeg processes each frame until it reaches the desired frame and then processes it.

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My question:

Is there a way to increase the speed/processing time of exporting a single frame from a video to a image? - Perhaps by skipping the unwanted frames and going directly to the frame the user wants to export?

Answer

"-ss",GetPositionInVideo, goes immediately before "-i",Video.mp4 for fast seeking.