Film winding system for a film stretching line having the following features: - a film entry area is provided, through which a film web to be wound can be fed to the film winding system; - a first winding station is provided, the first winding station being configured in a winding position to wind the film web into a film roll; - a contact roller and a measuring roller are provided, the contact roller being arranged adjacent to the first winding station in the winding position and being configured to guide the film web to the first winding station; - the measuring roller is arranged upstream of the contact roller in the direction of movement of the film web and is configured to guide the film web to the contact roller; - a first adjustment device is provided and configured to displace the measuring roller relative to the contact roller along a travel path in such a way that a degree of wrapping over which the film web covers the contact roller can be changed, characterised by the following features: - a deflection roller and a second adjustment device are provided; - the deflection roller is arranged between the film entry area and the measuring roller; - the second adjustment device is configured to displace the deflection roller in a vertical direction in such a way that the film web can be aligned approximately horizontally between: a) the deflection roller and the measuring roller; and/or b) the deflection roller and the contact roller; and/or by the following features: - a first and a second stabilising roller (20, 21) are provided and can be arranged on a first edge region of the film web, wherein the first stabilising roller can be brought into contact with an upper side of the film web and the second stabilising roller can be brought into contact with an underside of the film web, the first and second stabilising rollers (20, 21) only being spaced apart from each other in the vertical direction; - a third and a fourth stabilising roller are provided and can be arranged on a second edge region, opposite the first edge region, of the film web, wherein the third stabilising roller can be brought into contact with an upper side of the film web and the fourth stabilising roller can be brought into contact with an underside of the film web, the third and fourth stabilising rollers only being spaced apart from each other in the vertical direction. - a film entry area is provided, through which a film web to be wound can be fed to the film winding system; - a first winding station is provided, the first winding station being configured in a winding position to wind the film web into a film roll; - a contact roller and a measuring roller are provided, the contact roller being arranged adjacent to the first winding station in the winding position and being configured to guide the film web to the first winding station; - the measuring roller is arranged upstream of the contact roller in the direction of movement of the film web and is configured to guide the film web to the contact roller; - a first adjustment device is provided and configured to displace the measuring roller relative to the contact roller along a travel path in such a way that a degree of wrapping over which the film web covers the contact roller can be changed, characterised by - a deflection roller and a second adjustment device are provided; - the deflection roller is arranged between the film entry area and the measuring roller; - the second adjustment device is configured to displace the deflection roller in a vertical direction in such a way that the film web can be aligned approximately horizontally between: a) the deflection roller and the measuring roller; and/or b) the deflection roller and the contact roller; and/or by the following features: a) the deflection roller and the measuring roller; and/or b) the deflection roller and the contact roller; and/or by the following features: - a first and a second stabilising roller (20, 21) are provided and can be arranged on a first edge region of the film web, wherein the first stabilising roller can be brought into contact with an upper side of the film web and the second stabilising roller can be brought into contact with an underside of the film web, the first and second stabilising rollers (20, 21) only being spaced apart from each other in the vertical direction; - a third and a fourth stabilising roller are provided and can be arranged on a second edge region, opposite the first edge region, of the film web, wherein the third stabilising roller can be brought into contact with an upper side of the film web and the fourth stabilising roller can be brought into contact with an underside of the film web, the third and fourth stabilising rollers only being spaced apart from each other in the vertical direction.