Duplicate Python Function Silently Ignored Trim Parameters in Solo Developer's Flask App

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A solo developer running an AI video editing platform called snipforge.video discovered a bug where GIF trimming failed to respect user-selected start and end times, always converting the entire video instead. The root cause was a duplicate function definition in a 16,000-line single-file Flask app — Python silently overwrites a function name when it is defined twice, and the second, older version accepted the trim parameters but never used them. Because both definitions had identical signatures and the app produced no errors or exceptions, the bug went undetected for some time. The fix was straightforward: delete the shadowing duplicate and retain only the complete implementation that correctly passes trim values to FFmpeg. After the fix, a requested five-second clip dropped from a 48 MB, 74-second job to a 1.9 MB output completed in just six seconds.

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