[DCP-o-matic] DCP issue

Hi, I am using DCP -o - matic to create a DCP from a video file that runs 30 minutes. In the authoring process it is adding an extra minute of black at the end. As this is part of a scheduled show it is causing problems with the timing of what comes afterwards as well as causing our projectionists to think that there has been some sort of failure! Would you know what is causing this and how I might solve the problem? I look forward to hearing from you. Best regards John Martin Artistic Director Phone: 07762 587768 E-mail: john@trinitytheatre.net<mailto:john@trinitytheatre.net> Website: www.trinitytheatre.net<https://emea01.safelinks.protection.outlook.com/?… Get more info at: [icon_16_facebook] <https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.facebook.com%2Ftrinitytheatre&data=02%7C01%7CGary.Norman%40nuffieldhealth.com%7C773900d97a3d4299f83e08d4cf38b822%7C1badfb81fefa4bfc85d8eece023a15f5%7C1%7C0%7C636361289900484002&sdata=sWs02oVqXxl61WoOqBLZuNdli3NtE43NlVfEa9Nhbio%3D&reserved=0> [icon_16_linkedin] <https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftrinity-theatre&data=02%7C01%7CGary.Norman%40nuffieldhealth.com%7C773900d97a3d4299f83e08d4cf38b822%7C1badfb81fefa4bfc85d8eece023a15f5%7C1%7C0%7C636361289900484002&sdata=%2FeRXmPIjvYTv%2F2EZ2W%2F4URzADcTZzdPYXfSCcGscGoo%3D&reserved=0> [icon_16_twitter] <https://emea01.safelinks.protection.outlook.com/?url=http%3A%2F%2Ftwitter.com%2Ftrinitytheatre&data=02%7C01%7CGary.Norman%40nuffieldhealth.com%7C773900d97a3d4299f83e08d4cf38b822%7C1badfb81fefa4bfc85d8eece023a15f5%7C1%7C0%7C636361289900484002&sdata=taG0RlfbE%2BIko7BNqOnJWl87kgLUEu0COg1880X3rhg%3D&reserved=0> [One-Man-Email-Banner]<https://emea01.safelinks.protection.outlook.com/?u… Trinity Theatre, Church Road, Tunbridge Wells, Kent TN1 1JP. Switchboard: 01892 678 670. Box office: 01892 678678. enquiries@trinitytheatre.net<mailto:enquiries@trinitytheatre.net> [Description: Trinity Logo Magenta (WinCE)]Trinity Theatre and Arts Centre Ltd Registered Charity Number 1054547 Registered Company Number 3179063 This email and its attachments may be confidential and are intended solely for the use of the individual to whom it is addressed. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Trinity Theatre.If you are not the intended recipient of this email and its attachments, you must take no action based upon them, nor must you copy or show them to anyone. Please contact the sender if you believe you have received this email in error.