[FFmpeg-user] hls_init_time problem

[白 桦]

hmmm, i checked ffmpeg document again

hls_init_time seconds

Set the initial target segment length in seconds. Default value is 0. Segment will be cut on the next key frame after this time has passed on the first m3u8 list. After the initial playlist is filled ffmpeg will cut segments at duration equal to hls_time

i think i find the problem, maybe hls_init_time is not what i want

as you know, in order to open his video as fast as possible
i need the first segment to be a small size

so, i just need the first segment to be 2 seconds or 5 seconds and every segment after it can be 60 seconds (larger than the first one as the video play has always begun)

does ffmpeg has some options like this?



On 26 Apr 2017, at 7:53 AM, Steven Liu <lingjiujianke at gmail.com<mailto:lingjiujianke at gmail.com>> wrote:

2017-04-14 16:46 GMT+08:00 ? ? <closezling at outlook.com<mailto:closezling at outlook.com>>:

Hi,

I’m record a stream from ip camera with H264 video encoding & PCMA audio
encoding to m3u8
Ffmpeg version:3.2.4
OS:OSX

Here is my command:

ffmpeg -rtsp_transport tcp -i rtsp://192.168.0.40/1/h264major -vcodec
copy -acodec aac -hls_init_time 2 -hls_time 60
-hls_list_size 0 -hls_flags +single_file+round_durations
-hls_segment_filename test.ts -t 3600 test.m3u8

But in the m3u8 file,every segment entry’s duration is 2 seconds

Which part did I do wrong?

you should not use both -hls_init_time 2 and  -hls_list_size 0,
-hls_init_time 2 is enabled on first hls m3u8 window(before sequence(#
EXT-X-MEDIA-SEQUENCE) value change.)


Thx in advance!
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