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OpenAI charges by the minute, so speed up your audio
I discovered a fun and strangely obvious trick for summarizing videos faster and reducing costs: just speed them up. Cheaper, faster OpenAI transcriptions with a little ffmpeg trick.
I just saved you time by jumping straight to the point, but read-on if you want more of a story about how I accidentally discovered this while trying to summarize a 40-minute talk from Andrej Karpathy. I already had an old, home-brewed script that would extract the audio from any video URL, pipe it through whisper locally and dump the transcription in a text file. There’s also a parallel in my head between this and the brain’s ability to still comprehend text with spelling mistakes, dropped words and other errors, i.e. transposed letter effects.
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