parse file if action is not cancelled
parse file if action is not cancelled

gpac/mp4box.js,hanzeil/mp4box.js,sjames1958gm/mp4box.js,b123400/mp4box.js,gpac/mp4box.js,b123400/mp4box.js,hanzeil/mp4box.js,sjames1958gm/mp4box.js