So the plugin download the audio file (Correct) only can not play it ?!
Now test thess commands
Test 1: The "No-Sync" Bypass
This forces GStreamer to push audio without waiting for the hardware clock (often bypasses the 'Busy' lock).
gst-launch-1.0 filesrc location=/tmp/a.mp4 ! qtdemux ! aacparse ! avdec_aac ! audioconvert ! audioresample ! autoaudiosink sync=false
Test 2: The "Software Mixer" (dmix)
This tries to use the ALSA software mixer plugin which allows multiple sounds at once.
gst-launch-1.0 filesrc location=/tmp/a.mp4 ! qtdemux ! aacparse ! avdec_aac ! audioconvert ! audioresample ! alsasink device="dmix"
Test 3: The "Radio Mode" Test (The most important check)
Crucial: switch the box to a Radio Channel (so the TV audio is gone) then run:
gst-launch-1.0 playbin uri=file:///tmp/a.mp4
If this works on Radio but not on TV channels, the hardware cannot mix audio, and we must use a "Mute" fix in Python.
>>>>>>>>>>>>>>>>>>>
Test 4: High-Priority Buffer
This uses a large queue to prevent the Amlogic CPU from dropping the stream if the video process is heavy.
gst-launch-1.0 filesrc location=/tmp/a.mp4 ! qtdemux ! aacparse ! avdec_aac ! audioconvert ! audioresample ! queue max-size-buffers=0 max-size-time=0 max-size-bytes=0 ! autoaudiosink
Test 5: Hardware Sub-Device (The "Second Pipe")
Amlogic usually has multiple sub-devices. This tries to send audio to the second hardware path.
gst-launch-1.0 filesrc location=/tmp/a.mp4 ! qtdemux ! aacparse ! avdec_aac ! audioconvert ! audioresample ! alsasink device=hw:0,2
test and feedback with send output
- Did you hear any sound?
- Did it say "Device or resource busy"?
- Did it say "PLAYING" but with silence?
Please send me results for all 5.