bta2dpd plays too fast

[Emmanuel Dreyfus <manu%netbsd.org@localhost>]

Hello

I have an odd problem with dpa2dpd: when sending audio to a bluetooth 
device, it starts fine for one or two seconds, then playing acceleraate.
I measured a 676s video is played in 293s. Speed is not constant, after
the initial acceleration, it slows and accelerate several time.

I use bta2dpd -a addr file.wav

file.wav was created from a webm video: 
ffmpeg4 -i  file.webm  -f wav -r 44100 file.wav

audioplay file.wav plays the file correctly.  Here is waht ffprobe4
tells about it:
Input #0, wav, from '/tmp/test.wav':
  Metadata:
    encoder         : Lavf58.76.100
  Duration: 01:02:49.99, bitrate: 1536 kb/s
  Stream #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s
 
Is this a known problem? What do I do wrong?

-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost