Transcription for screencast videos into written instructional documentation

Seeking a transcription professional who can review various screencast videos with voiceover and convert the video content into written, step-by-step instructional documentation. This person should not just transcribe the video word-for-word, but modify and edit the content into understandable written instructions. This should also include taking screenshots/stills from the videos and adding them to the written instructions where it makes sense to include them.