Your logs show there was audio in the captured file and testing here I get audio.
If you are still having issues try changing the HLS downloader. Settings > Internet Downloads > Advanced > HLS
Thank you. I just found that if I use edge browser to play the video, I get the sound. However, if I use window media player to play the video, then there is no sound.
Yuminghu
When I use stream downloader to record video stream from stripchat.com, there is no sound with the video. However, if I use the same method to record youtube video, the sound is normal. Attached please find the log file for my download.