Pass-2: ffmpeg -y -i input.mp4 -pix_fmt yuv420p -vcodec libx265 -profile:v main -preset fast -filter_complex scale=w="min(trunc(iw/2)*2\,640)":h=-2,unsharp=5:5:0.75,eq=saturation=1.06:contrast=1.05,colortemperature=6900 -b:v 1500k -maxrate 1500k -bufsize 1500k -acodec aac -ab 128k -subq 6 -async 2 -tag:v hvc1 -movflags faststart -map 0 -vsync 2 -max_muxing_queue_size 9999 -hls_segment_type fmp4 -force_key_frames expr:gte(t,n_forced*3) -hls_flags single_file -hls_list_size 0 -hls_time 6 -hls_playlist_type vod -hls_segment_filename output.mp4 -x265-params min-keyint=90:keyint=90:pass=2:stats=logfile output.I have an mp4 file (converted from an mkv file) that has a longer audio than video stream. Pass-1: ffmpeg -y -i input.mp4 -pix_fmt yuv420p -vcodec libx265 -profile:v main -preset fast -vf scale=w="min(trunc(iw/2)*2\,640)":h=-2 -b:v 1500k -maxrate 1500k -bufsize 1500k -acodec aac -ab 128k -subq 6 -async 2 -tag:v hvc1 -movflags faststart -map 0 -vsync 2 -max_muxing_queue_size 9999 -hls_segment_type fmp4 -force_key_frames expr:gte(t,n_forced*3) -hls_flags single_file -hls_list_size 0 -hls_time 6 -hls_playlist_type vod -hls_segment_filename output.mp4 -x265-params min-keyint=90:keyint=90:pass=1:stats=logfile -f null /dev/null When serving a HLS+fMP4+HEVC video, its unable to play on iOS, and plays smoothly on Android. We have got to know, in order to serve hevc videos on iOS, we need to use HLS+fMP4 approach from the following link
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