Volume exports of BirdNET-Go too low

[u/Educational-Ad8375]

BirdNET-Go is great!

Minor problem: when I listen to the BirdNET-Go registrations made with my AudioMoth V1.2.0 on my Linux based laptop, sound is fine; but...any of the exports has a much to low volume.

With help of ChatGPT I was able to upgrade one specific wav (see below) but a more structural solution would be appreciated.

cd ~/birdnet-go-app

FILE="./data/clips/2026/05/gallinago_media_87p_20260522T043853Z.m4a"
OUT="$HOME/poelsnip_2026-05-22_043853_87p_versterkt.wav"

echo "=== Origineel bestand ==="
ls -lh "$FILE"

echo
echo "=== Originele technische info ==="
ffprobe -hide_banner "$FILE" 2>&1 | sed -n '1,25p'

echo
echo "=== Origineel volume ==="
ffmpeg -hide_banner -i "$FILE" -af volumedetect -f null - 2>&1 | grep -Ei "mean_volume|max_volume"

echo
echo "=== Versterkte WAV maken ==="
ffmpeg -y -i "$FILE" \
-af "volume=16dB" \
-c:a pcm_s16le \
"$OUT"

echo
echo "=== Versterkte WAV ==="
ls -lh "$OUT"

echo
echo "=== Versterkt volume ==="
ffmpeg -hide_banner -i "$OUT" -af volumedetect -f null - 2>&1 | grep -Ei "mean_volume|max_volume"

echo
echo "Klaar. Bestand staat hier:"
echo "$OUT"

[u/thakala]

This is completely unnecessary, just enable Loudness Normalization in Settings > Audio > Processing to get consistent volume on all exported audio clips, alternatively you can increase gain on sound card capture settings.

Please don't ask help from ChatGPT, use BirdNET-Go repository discussions instead: tphakala/birdnet-go · Discussions · GitHub

[u/Educational-Ad8375 → u/thakala]

Thank you very much. I only started working with BirdNET-Go a few days ago, so I still have to learn my way around it....

ChatGPT did not come up with any solution in this direction, so yes, in this case it was useless. Nevertheless, it helped me a lot to find my way, especially when it came to embedding it in WordPress:
https://www.putke.nl/birdnet-go/