Video Timecode
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Why video timecode and blacked tapes are so important

Why video timecode and blacked tapes are so important

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Video Timecode Presentation Transcript

  • 1. Video Timecodes Please download full version to activate animations
  • 2. Video Timecodes
  • 3. What is Timecode?
    • When you open a brand new video tape it is completely blank. If you put it in a camcorder and press play, you will get a screen full of static:
  • 4. What is Timecode?
    • ...although many modern camcorders spare us the eyestrain by covering the static with a blue screen:
  • 5. What is a Timecode?
    • … the tape is completely blank – there is absolutely nothing on it. This creates a problem when we come to record some footage...
  • 6. What is a Timecode?
    • Basically, a completely blank tape is not primed. It is like painting a window frame without first using undercoat – there’s nothing to bond to :
  • 7. What is a Timecode?
    • Video editing systems rely on a hidden recording on a tape. This recording is called the timecode . The timecode keeps precise track of where you are on a tape, a bit like a tape counter
  • 8. What is a Timecode?
    • Timecodes obviously measure time. Here’s what the numbers mean:
    Hours Minutes Seconds Frames
  • 9. What is a Timecode?
    • Timecodes obviously measure time. Here’s what the numbers mean:
    H ours M inutes S econds F rames Timecode is usually expressed as: HH:MM:SS:FF … so in this case: 10:20:28:18
  • 10. The SMPTE Standard
    • Some timecode trivia…
    • This format of timecode is called SMPTE (pronounced ‘simptee’)
    • SMPTE stands for S ociety of M otion P icture and T elevision E ngineers
  • 11. Why Timecodes Matter
    • The good news is that when you make your first recording on a new tape a timecode is recorded automatically :
  • 12. Why Timecodes Matter
    • The good news is that when you make your first recording on a new tape a timecode is recorded automatically :
  • 13. The Big Problem
    • This is fine if you are going to make one long recording on a tape. However, if you keep starting and stopping the tape there is a good chance that the timecode will have gaps in it :
  • 14. The Big Problem
    • This is fine if you are going to make one long recording on a tape. However, if you keep starting and stopping the tape there is a good chance that the timecode will have gaps in it :
  • 15. The Big Problem
    • Now the bad news : these gaps confuse video editing software and often cause problems when capturing video:
  • 16. The Solutions
    • There are two solutions to this problem:
    • Record black video (ie leave the lens cap on) over the entire tape before you film. This is the professional solution and is known as
    • ‘ blacking a tape ’
    • Or ensure that you leave the tape recording for at least 10 seconds at both the start and end of a recording. This is not ideal but is often used
  • 17. Video Timecodes