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mp3 files from qingtingfm can not be decoded properly. #491

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DeqingSun opened this issue Feb 2, 2022 · 3 comments
Closed

mp3 files from qingtingfm can not be decoded properly. #491

DeqingSun opened this issue Feb 2, 2022 · 3 comments

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@DeqingSun
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Hi, Thanks for creating this library, it makes audio steaming so easy.

I tried to stream radio from qingting.fm, a major Mandarin radio host and the output was not smooth, I can hear music for about a half second, and noise for about 1 second, and repeat. The similar issue was also mentioned with #141

I did some search and did some experiment. I downloaded a few seconds of stream and I did not find any "ID3" "3DI" or "TAG" ascii in binary, so it should not be a ID3 tag issue. I also checked the connection speed, the download speed is about 20~40KB/s for the 64Kbps stream, and it played properly on computer. I also check the fill level of the AudioFileSourceBuffer, it increased steadily.

Is there any suggestions on how to troubleshoot this issue? Thanks.

Here is some log with http://lhttp.qingting.fm/live/388/64k.mp3

Connecting to WiFi
...Connecting to WiFi
...Connecting to WiFi
...Connecting to WiFi
Connected
Running for 5 seconds ...Free mem=266888
Changing URL to: http://lhttp.qingting.fm/live/388/64k.mp3, vol=0
Before stop...Free mem=266888
After stop...Free mem=266888
created icystream
created buffer
created decoder
Decoder start...
+0 0x3ffb26f0
Done start new URL
Free PSRAM=3883435
Running for 6 seconds*...Free mem=259092
getFillLevel 0
status: 'Refilling buffer'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 2562'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'forbidden bitrate value' at byte offset 7081'
status: 'Decoding error 'forbidden bitrate value' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'lost synchronization' at byte offset 7081'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 708'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 727'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 727'
Free PSRAM=3883427
Running for 7 seconds*...Free mem=259092
getFillLevel 10350
title: ''
status: 'Decoding error 'lost synchronization' at byte offset 18800'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'lost synchronization' at byte offset 18609'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 186'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 188'
status: 'Decoding error 'bad main_data_begin pointer' at byte offset 188'
Free PSRAM=3883435
Running for 8 seconds*...Free mem=259092
getFillLevel 16218
@DeqingSun
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Some update of the test, I used wget to fetch a section of the broadcast, it worked flawlessly if I used AudioFileSourcePROGMEM or put the fetched file on a local server. Seems to be a speed issue, but I also tried to implement #122 to pre-fill the buffer, and the sound still doesn't work well, even at the beginning.

@DeqingSun
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Seems related to #394
The header does include Tranfer-Encoding: chunked streams and this explains why the wget works and direct connection does not.

@DeqingSun
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Confirmed. It is a chunked issue.

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@DeqingSun