A Film Restoration Diary


    Mapping Out a Restoration Roadmap

    17 Aug 2015

    Having assessed the four Tarax Show Christmas Pantomime kine scans, it is time to plan out a restoration roadmap.

    Restoration Steps

    The steps now required to restore these scans ready for release on DVD are (not necessarily in this order):

    • Stabilisation of jitter if possible and practical. Tests have shown jitter can be most accurately measured and corrected at high resolution.
    • Downsampling of the scanned frames to PAL SD+ resolution — this means PAL SD resolution (720 x 576 pixels) plus allowance for the overscan.
    • Grading of the video levels so that white peaks and shadow detail are not clipped — i.e not too much contrast. At the same time, we don’t want the result to be “flat”. We want want to utilise the full “broadcast safe” tonal range.
    • Reduction of film artefacts: dust and scratches if possible and practical.
    • Cropping to PAL SD resolution which is required for DVD release.
    • Repair and equalisation of the soundtrack.
    • Mastering for DVD or release on the web.

    In the next post, we’ll try out some commercial film restoration software and see how good a job it does at stabilisation and dust and scratch removal.

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