mirrors/copyparty
1
0
Fork 0
mirror of https://github.com/9001/copyparty.git synced 2025-08-16 08:32:13 -06:00
Code Issues Actions Packages Projects Releases Wiki Activity

more accurate bpm detector

Browse source
This commit is contained in:
ed 2023-03-31 21:20:37 +00:00
parent 854ba0ec06
commit e7f3e475a2
1 changed files with 28 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

34
bin/mtag/audio-bpm.py
View file

@ -16,6 +16,10 @@ dep: ffmpeg
"""
# save beat timestamps to ".beats/filename.txt"
SAVE = False
def det(tf):
# fmt: off
sp.check_call([
@ -23,12 +27,11 @@ def det(tf):
b"-nostdin",
b"-hide_banner",
b"-v", b"fatal",
b"-ss", b"13",
b"-y", b"-i", fsenc(sys.argv[1]),
b"-map", b"0:a:0",
b"-ac", b"1",
b"-ar", b"22050",
b"-t", b"300",
b"-t", b"360",
b"-f", b"f32le",
fsenc(tf)
])
@ -47,10 +50,29 @@ def det(tf):
print(c["list"][0]["label"].split(" ")[0])
return
# throws if detection failed:
bpm = float(cl[-1]["timestamp"] - cl[1]["timestamp"])
bpm = round(60 * ((len(cl) - 1) / bpm), 2)
print(f"{bpm:.2f}")
# throws if detection failed:
beats = [float(x["timestamp"]) for x in cl]
bds = [b - a for a, b in zip(beats, beats[1:])]
bds.sort()
n0 = int(len(bds) * 0.2)
n1 = int(len(bds) * 0.75) + 1
bds = bds[n0:n1]
bpm = sum(bds)
bpm = round(60 * (len(bds) / bpm), 2)
print(f"{bpm:.2f}")
if SAVE:
fdir, fname = os.path.split(sys.argv[1])
bdir = os.path.join(fdir, ".beats")
try:
os.mkdir(fsenc(bdir))
except:
pass
fp = os.path.join(bdir, fname) + ".txt"
with open(fsenc(fp), "wb") as f:
txt = "\n".join([f"{x:.2f}" for x in beats])
f.write(txt.encode("utf-8"))
def main():