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Fix a PAL film field-order mismatch with the FFmpeg phase filter
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What this guide covers
For people restoring interlaced PAL film transfers whose motion judders because one field is out of step. You end with a choice of phase mode and a before-and-after check. Based on the FFmpeg manual only; no command was run.
More about this guide
Guide ID: art_01M6WK2Z8YG1K7JX5VDJ21M4C8
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Guide title
Fix a PAL film field-order mismatch with the FFmpeg phase filter
Coverage
For people restoring interlaced PAL film transfers whose motion judders because one field is out of step. You end with a choice of phase mode and a before-and-after check. Based on the FFmpeg manual only; no command was run.
Example
A hypothetical juddering PAL film capture, tried with the default mode and then fixed modes. Nothing was run, so no picture result is reported.
Useful starting points
- Check motion on a pan before and after, because the filter only fixes a one-field phase error.
- If motion gets worse, the fixed mode is probably wrong; switch between the two fixed modes or use an automatic one.
- If the filter flaps between choices, fix the mode by hand.
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