get key file only once time is ok, no need more times.
Ticket-id: #6545

Found-by: JohnPi
Signed-off-by: NSteven Liu <lq@onvideo.cn>

ticket-id: #6541
when use hls fmp4 muxer, the extention name is not .m4s, this
code can fix it.

Found-by: JohnPi
Signed-off-by: NSteven Liu <lq@onvideo.cn>

Reviewed-by: NSteven Liu <lq@onvideo.cn>
Signed-off-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>

have not implementation the fmp4 single file yet before this commit.
Suggested-by: NDerek Buitenhuis <derek.buitenhuis@gmail.com>
Signed-off-by: NSteven Liu <lq@onvideo.cn>

when use fmp4 segment type in hls and use codec copy,
there have an error message.
error message:
   [mp4 @ 0x25df020] Tag avc1 incompatible with output codec id '28' ([33][0][0][0])
   [hls @ 0x2615c80] Some of the provided format options in '(null)' are not recognized
   Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
this patch can fix it.
Signed-off-by: NLiu Qi <w_liuqi@kingsoft.com>
Signed-off-by: NSteven Liu <lq@onvideo.cn>

show the hls_segment_type default always 0, show the flag name better
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

add the fmp4 format into hlsenc
because the fmp4 format add into hls from version 7.
the spec link is:
https://tools.ietf.org/html/draft-pantos-http-live-streaming-20
and the describe on WWDC
https://developer.apple.com/videos/play/wwdc2017/515/Signed-off-by: NSteven Liu <lq@onvideo.cn>

When the hlsenc at BYTERANGE mode, it should not show the warning message:
"Duplicated segment filename detected:"
Reported-by: NMarco <marco@worldcast.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Suggested-by: NAaron Levinson <alevinsn@aracnet.com>
Reviewed-by: NAaron Levinson <alevinsn@aracnet.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Fixes Coverity CID: 1405135
Reviewed-by: NRodger Combs <rodger.combs@gmail.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

fix ticket id: #6353
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

refer to:
https://git.libav.org/?p=libav.git;a=commitdiff;h=0a4b9d0ccd10b3c39105f99bd320f696f69a75a2
add hls encrypt options looks like libav's libavformat/hlsenc.c
Reviewed-by: NMoritz Barsnick <barsnick@gmx.net>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

when cannot get pkt duration, hlsenc segments duration will
be set to 0, this patch can fix it.
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

check if the hls_flags is byterange_mode and check if should close fd
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

the SECOND_LEVEL* flags process and name is too long
extract all of them output to funtions, make code clear
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

fix ticket: #6204
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

MSVC doesn't support the %s time format, and instead of returning an
error the invalid parameter handler is invoked which (by default)
terminates the process.

Reviewed-by：Steven Liu <lq@chinaffmpeg.org>
Signed-off-by: NHendrik Leppkes <h.leppkes@gmail.com>

refer to ticket id: #6170

rename file from temp to origin name after complete current segment
Reviewed-by: NAman Gupta <ffmpeg@tmm1.net>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

check if proto is null before av_strcasecmp
CID:  1401346
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

When the http method is not set, the method will use POST for ts,
PUT for m3u8, it is not unify, now set it unify.
This ticket id: #5315
Reviewed-by: NMichael Niedermayer <michael@niedermayer.cc>
Reviewed-by: NMoritz Barsnick <barsnick@gmx.net>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

hls-encoder currenlty does not provide stream level metadata to mpegts
muxer. This patch fixes track #3848 bug.
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

When user use the hls_wrap, there have many problem:
1. some platform refersh the old but usefull segment
2. CDN(Content Delivery Network) Deliver HLS not friendly

The hls_wrap is used to wrap segments for use little space,
now user can use hls_list_size and hls_flags delete_segments
instead it.
Reviewed-by: NMichael Niedermayer <michael@niedermayer.cc>
Reviewed-by: NCarl Eugen Hoyos <ceffmpeg@gmail.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Adds a `-hls_flags +temp_file` which will write segment data to
filename.tmp, and then rename to filename when the segment is complete.

This patch is similar in spirit to one used in Plex's ffmpeg fork, and
allows a transcoding webserver to ensure incomplete segment files are
never served up accidentally.
Reviewed-by: NHendrik Leppkes <h.leppkes@gmail.com>
Reviewed-by: NBodecs Bela <bodecsb@vivanet.hu>
Signed-off-by: NAman Gupta <aman@tmm1.net>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Reviewed-by: NBodecs Bela <bodecsb@vivanet.hu>
Reviewed-by: NJames Almer <jamrial@gmail.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

When use http method to delete the old segments,
there is only io_open, hove not io_close yet,
this patch is used to fix it
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

when push hls to http server, the old segemnts can not delete by hls formats.
so add the http option into hls_delete_old_segments
Reported-by: NYin Jiaoyuan <yinjiaoyuan@163.com>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

because the oc have been  potint to hls->avf or hls->vtt_avf
here is not needed point once again
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

when hlsenc use flag second_level_segment_index,
second_level_segment_size and second_level_segment_duration,
the rename is ok but the output filename always use the old filename
so move the rename operation after the close the ts file and
before open new segment
Reported-by: NChristian Johannesen <chrisjohannesen@gmail.com>
Reviewed-by: NBodecs Bela <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

start_number option starts the playlist sequence number
(#EXT-X-MEDIA-SEQUENCE) from the specified number. Unless hls_flags
single_file is set, it also specifies starting sequence numbers of
segment and subtitle filenames. Sometimes it is usefull to have unique
starting numbers at each run, but currently it is only achiveable by
setting this parameter manually.
This patch enables to specify start_number source parameter by
introducing hls_start_number_source with 3 possible values:
generic/epoch/datetime. This ensures to set start sequence number
automatically for practically unique numbers. Generic option is the
default and this is the curent behaviour: start_number option value
specifies the start sequence number. (start_number default value is 0)
If hls_start_number_source is set to epoch, then the start number will
be the seconds since epoch (1970-01-01 00:00:00). If set to datetime,
then the start sequence number will be based on the current date/time
value as YYYYmmddHHMMSS. e.g. 20161231235659.
Hls speficication allows 64 bit integers as sequence numbers. This patch
also changes some code where only 32 bit integer values were handled
correctly.
Reviewed-by: NMoritz Barsnick <barsnick@gmx.net>
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

when the segments largest duration value is look like 4.000000, the
EXT-X-TARGETDURATION value should equ 4.
it's wrong when hlsenc use ceil, so fix it.
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

 problem

fix ticket: #6067

Tested-by: Pero
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

CID: 1398228
Passing null pointer dirname to strlen, which dereferences it.
Reviewed-by: NMichael Niedermayer <michael@niedermayer.cc>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

in get_default_pattern_localtime_fmt the default pattern contains
%Y%m%d%H%I%S but the original intention was %Y%m%d%H%M%S
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

fix CID: 1398364 Resource leak
refine the code of the new options
Reviewed-by: NBodecs Bela <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

A wrong, unitialized variable is used for testing. This patch fixes this
typo.
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

1st:
This patch makes it possible to put actual segment file size (measured
in bytes) and/or duration (calculated in microseconds) into segment
filenames. This feature is useful when post-processing live streaming
access log files. New behaviour works only when -use_localtime option
is set and second_level_segment_size or/and
second_level_segment_duration new hls_flags are specified. %%s is the
placeholder for size and %%t for duration in hls_segment_filename
option. Fix sized trailing zeropadding also works eg. %%09s or %%023t.

A command to test new features:
./ffmpeg -loglevel info -y -f lavfi -i color=c=red:size=640x480:r=25 -f
lavfi -i sine=f=440:b=4:r=44100 -c:v mpeg2video -g 25 -acodec aac
-cutoff 20000 -ac 2 -ar 44100 -ab 192k -f hls -hls_time 3 -hls_list_size
5 -hls_flags
second_level_segment_index+second_level_segment_size+second_level_segment_duration
-use_localtime 1 -use_localtime_mkdir 1 -hls_segment_filename
"segment_%Y%m%d%H%M%S_%%04d_%%08s_%%013t.ts" stream.m3u8

2nd:
doc/muxers: beside second_level_segment_duration and second_level_segment_size,
added some more details and example to hls_segment_filename,
use_localtime, use_localtime_mkdir, hls_flags. hls_flags option list
reformatted to table
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>

Current implementation of finding duplicate segment filenames may fail
if use_localtime_mkdir and use_localtime are in effect and
segment_filename option expression contains subdirectories with
date/time specifiers. This patch fixes this false behaviour.
Signed-off-by: NBela Bodecs <bodecsb@vivanet.hu>
Signed-off-by: NSteven Liu <lq@chinaffmpeg.org>