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lighter audio encoding

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legop3
2025-11-27 22:27:51 -05:00
parent c141fd151a
commit 5a1ff61bc0
1 changed files with 4 additions and 2 deletions
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pi/bin/video-publisher.sh
+4 -2
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@@ -25,10 +25,11 @@ AUDIO_CHANNELS="${AUDIO_CHANNELS:-1}"
AUDIO_BITRATE="${AUDIO_BITRATE:-24000}" AUDIO_BITRATE="${AUDIO_BITRATE:-24000}"
# Normalize device/rate to match the HAT capture; plughw handles any minor conversions. # Normalize device/rate to match the HAT capture; plughw handles any minor conversions.
# Keep audio encode light for the Pi Zero by using 16 kHz mono Opus at a low complexity.
AUDIO_DEVICE="plughw:0,0" AUDIO_DEVICE="plughw:0,0"
AUDIO_RATE=48000 AUDIO_RATE=16000
AUDIO_CHANNELS=1 AUDIO_CHANNELS=1
AUDIO_BITRATE=24000 AUDIO_BITRATE=16000
# Flip the camera 180deg (supported by rpicam-vid/libcamera-vid) # Flip the camera 180deg (supported by rpicam-vid/libcamera-vid)
FLIP_ARGS=(--rotation 180) FLIP_ARGS=(--rotation 180)
@@ -90,6 +91,7 @@ run_pipeline() {
-c:v copy \ -c:v copy \
-c:a libopus \ -c:a libopus \
-b:a "${AUDIO_BITRATE}" \ -b:a "${AUDIO_BITRATE}" \
-compression_level 0 \
-application voip \ -application voip \
-frame_duration 60 \ -frame_duration 60 \
-ac:a "${AUDIO_CHANNELS}" \ -ac:a "${AUDIO_CHANNELS}" \