On 5/12/19 11:03 PM, Ted Park wrote:
I am using: ffmpeg -i
"rtsp://192.168.x.y:554/user=admin_password=XXXXXXXX_channel=1_stream=0.sdp?real_stream"
-y -c:a aac -b:a 160000 -ac 2 -s 960x540 -c:v libx264 -b:v 800000 -hls_time 10
-hls_list_size 10 -start_number 1 mystream.m3u8
ffmpeg creates a new file "mystreamnn.ts" every so much time, can the old files be
deleted automatically, or can it "wrap around" and start from the start of the file again
after a certain amount of time?
You set the maximum number of entries in the playlist to 10, so if you add
-hls_flags delete_segments by default it should only keep 10 + 1 segments
before deleting them.
I changed it to this:
ffmpeg -i
"rtsp://192.168.x.y:554/user=admin_password=XXXXXXXX_channel=1_stream=0.sdp?real_stream"
-y -c:a aac -b:a 160000 -ac 2 -s 960x540 -c:v libx264 -b:v 800000
-hls_time 6 -hls_list_size 10 -hls_flags delete_segments -start_number 1
mystream.m3u8
that doesn't delete the "old files" though
mystream.m3u8 is created after "mystream1.ts" is created/finished, can it be created as
soon as ffmpeg starts, so the stream is "immediately" available?
Well this is partly because HLS isn’t really a streaming protocol, I can’t
think of any good way to avoid that initial delay. The recommended target
duration of each segment is 6 seconds (or adjusted for drop frame) so if you
change hls_time from 10 to 6 you could make it shorter but I don’t think that’s
usually the “bottleneck,” so to speak. There’s the time needed to connect to
the original rtsp source and transcode, for instance.
If you keep an instance running constantly, this would be a non-issue though?
true, but the delay is about 60 seconds or so, I think that is because
each segment is about that long?
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