[FFmpeg-user] hls_init_time problem

[Steven Liu]

2017-04-27 15:05 GMT+08:00 白 桦 <closezling at outlook.com>:

> 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?
>
Not yet now,   maybe you can try -f segment, maybe it can do that.

>
>
>
> 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!
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org<mailto:ffmpeg-user at ffmpeg.org>
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org<mailto:ffmpeg-user at ffmpeg.org>
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
>
> _______________________________________________
> ffmpeg-user mailing list
> ffmpeg-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> ffmpeg-user-request at ffmpeg.org with subject "unsubscribe".
>