The accusations were that the video was looped late in the footage, the audio was not. Inference being something was cut from the video portion. Irrelevant now because the edits claimed to have been there are not in the video at the link.
AZ, the audio shows that the arresting officer is recounting the incident to a superior on his cell phone. If you watch the whole video, it's clear how the incident escalated, which appears to have been Bland's intention.
Is it possible that somebody came into the frame and was speaking...but that audio has been removed...and this is why the video was altered.
Yes its wild speculation...but the video is clearly edited. I wish these dashcams and body cams were instantly uploaded to site that could be accessed by a third party. Keeping the police as the gatekeepers fosters distrust...especially when they doctor video like this.