I'm fully available captioner, transcriptionist, editor and reviewer on both verbatim and non verbatim speech. I have worked with transcription platform such as Rev.com for four years. I do captioning to videos and films where i align the speakers sound to appear simultaneously. The aligned words are exactly what the speaker said incuding sycing atmospherics exactly the real timestamp they were played. Speaker labelling is key to accurate captioning and transcribing.