HLS_I_FRAMES_ONLY 1500 libavformat/hlsenc.c                                  target_duration, sequence, hls->pl_type, hls->flags & HLS_I_FRAMES_ONLY);
HLS_I_FRAMES_ONLY 1528 libavformat/hlsenc.c                                       en->filename, prog_date_time_p, en->keyframe_size, en->keyframe_pos, hls->flags & HLS_I_FRAMES_ONLY);
HLS_I_FRAMES_ONLY 2982 libavformat/hlsenc.c     {"iframes_only", "add EXT-X-I-FRAMES-ONLY, whenever applicable", 0, AV_OPT_TYPE_CONST, { .i64 = HLS_I_FRAMES_ONLY }, 0, UINT_MAX, E, "flags"},