I'm using a Raspberry pi zero with a Bluetooth dongle and I'm trying to play an mp3 file to a Bluetooth speaker. I managed to get them both connected after a lot of trying, this is the full list of commands I execute to get everything working:
rfkill unblock 0
sudo hciconfig hci0 up
sudo hciconfig hci0 piscan
To now stream the audio to the speaker I'm using the following gstreamer command:
gst-launch-1.0 filesrc location=song.mp3 ! pulsesink device=bluez_source.30_95_E3_95_46_F7
And that results in the following error:
pi@raspberrypi:~ $ gst-launch-1.0 filesrc location=song.mp3 ! pulsesink device=bluez_source.30_95_E3_95_46_F7
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
ERROR: from element /GstPipeline:pipeline0/GstPulseSink:pulsesink0: The stream is in the wrong format.
Additional debug info:
gstaudiobasesink.c(1119): gst_audio_base_sink_preroll (): /GstPipeline:pipeline0/GstPulseSink:pulsesink0:
sink not negotiated.
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...
Freeing pipeline ...
song.mp3 is a normal audio file, I can play it just fine with my phone, vlc and windows media player. The speaker also works fine with my phone.
What can I do to solve this issue?