http live streaming – Delay video (and audio) by x seconds in FFMPEG HLS Stream – Stack Overflow

I have an input HLS stream stream.m3u8 (e.g. using my macbook camera by running ffmpeg -f avfoundation -framerate 30 -i 0 -c:v libx264 -c:a aac -b:a 128k -ac 2 -crf 5 -preset veryfast -hls_time 1 -g 30 -sc_threshold 0 -f hls -hls_init_time 1 -hls_list_size 180 -hls_delete_threshold 180 -hls_flags delete_segments -hls_start_number_source datetime stream.m3u8).

I want to use FFMPEG to create another HLS stream stream-60.m3u8 in which the video is delayed by an arbitrary amount of seconds, e.g. 30s.

I tried ffmpeg -itsoffset 30 -i ./stream.m3u8 -c copy stream-60.m3u8 but the video delay is around 5s.