Files
hermes-agent/tests
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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