About 20 years ago I bought some live concert DVDs but the band did not release an audio CD version of it. I wanted to listen to it in my car so I ripped the a

About 20 years ago I bought some live concert DVDs but the band did not release an audio CD version of it. I wanted to listen to it in my car so I ripped the audio from the DVD but when I made a CD it sounded a little off. Then I learned that DVD was 48 kHz and not 44.1 kHz so the conversion program I used didn't account for this. I went back and used a polyphase filter to adjust the sampling rate. It sounded normal again but there were some audio glitches at various times. I went back about 10 years ago and ripped it again and converted it to FLAC which supports multiple sampling rates like 44.1, 48, 96, whatever and now everything sounds good.