ffmpeg -headers "Referer:https://www.c-span.org/" -i https://m3u8-1.c-spanvideo.org/program/program.554829.234.m3u8 -c copy -bsf:a aac_adtstoasc 123.mp4
ffmpeg -headers "Referer:https://www.c-span.org/" -i https://m3u8-1.c-spanvideo.org/program/program.554829.234.m3u8 -c copy -bsf:a aac_adtstoasc 123.mp4