Jesse Casco
70a3c2d9c9
perf(discord): stream voice PCM to ffmpeg instead of a temp file
...
pcm_to_wav staged every captured utterance in a NamedTemporaryFile just to
hand ffmpeg an input path, then unlinked it. Feed the PCM to ffmpeg's stdin
instead: one fewer file created, written, read back and removed per voice
utterance, and the try/finally cleanup goes away with it.
The WAV output deliberately still goes to output_path rather than being
captured from stdout. ffmpeg cannot seek on a pipe, so a piped WAV is
written with placeholder 0xFFFFFFFF RIFF/data chunk sizes -- Python's wave
module then reports 2147483647 frames for a 1s clip, and strict readers
misjudge the length. Writing to the real path lets ffmpeg seek back and
patch the header.
Tests cover both halves: that the PCM goes over stdin with no temp file,
and (when ffmpeg is installed) that the resulting header reports the true
frame count.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com >
2026-08-02 23:21:00 +05:30
..
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