Sandra Bland video 'was not edited', say police

US officials have denied editing Texas police dashcam footage showing the arrest of an African-American woman who died three days later in custody.

Footage of the 10 July arrest shows Sandra Bland's car being pulled over for failing to signal and then an ensuing confrontation with the officer.

There were several jumps in the 52-minute film, which was watched more than one million times on YouTube, but police later posted a version without glitches.

Gary O'Donoghue reports.