This standard specifies the picture area and the position and size of the variable integral optical sound strip on 16 mm film distribution prints. It also specifies the width and lateral position of the sound return light blade and the relative position of the corresponding frame. This standard applies to 16 mm film releases.
JB/T 9411-2014 history
2014JB/T 9411-2014 Picture image area and photographic sound record on 16 mm motion-picture release prints.Position and dimensions
1999JB/T 9411-1999 Position and dimensions for issuing positive pictures and optical sound track of 16 mm motion-picture film