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HTTP-TS: Support guess_has_av for audio only stream. v6.0.141 (#4063)

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## Describe ##
http_remux feature support config `has_audio`, `has_video` &
`guess_has_av` prop.


282d94d7bb/trunk/src/app/srs_app_http_stream.cpp (L630-L632)

Take `http_flv` as example, `srs` can accept both RTMP streams with only
audio, only video or both audio and video streams. It is controlled by
above three properties.

But `guess_has_av` is not implemented by `http_ts`. The problem is that
if I want publish a RTMP stream with audio or video track, the
`has_audio` and `has_video`, which are default true/on, must to be
config to match the RTMP stream, otherwise the `mpegts.js` player can't
play the `http-ts` stream.

## How to reproduce  ##

1. `export SRS_VHOST_HTTP_REMUX_HAS_AUDIO=on; export
SRS_VHOST_HTTP_REMUX_HAS_VIDEO=on; export
SRS_VHOST_HTTP_REMUX_GUESS_HAS_AV=on; ./objs/srs -c
conf/http.ts.live.conf`
2. publish rtmp stream without video: `ffmpeg -re -stream_loop -1 -i
srs/trunk/doc/source.200kbps.768x320.flv -vn -acodec copy -f flv
rtmp://localhost/live/livestream`
3. open chrome browser, open
`http://localhost:8080/players/srs_player.html?schema=http`, go to
`LivePlayer`, input URL: `http://localhost:8080/live/livestream.ts`,
click play.
4. the `http://localhost:8080/live/livestream.ts` can not play.

## Solution ##

Let `http-ts` support `guess_has_av`, `http-flv` already supported. The
`guess_has_av` default value is ture/on, so the `http-ts|flv` can play
any streams with audio, video or both.

---------

Co-authored-by: Winlin <winlinvip@gmail.com>
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trunk/doc/CHANGELOG.md
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@ -7,6 +7,7 @@ The changelog for SRS.
<a name="v6-changes"></a>
## SRS 6.0 Changelog
* v6.0, 2024-07-24, Merge [#4063](https://github.com/ossrs/srs/pull/4063): let http-remux ts stream support guess_has_av feature;. v6.0.141 (#4063)
* v6.0, 2024-07-24, Merge [#4116](https://github.com/ossrs/srs/pull/4116): Dockerfile: Consistently use proper ENV syntax using "=". v6.0.140 (#4116)
* v6.0, 2024-07-24, Merge [#4126](https://github.com/ossrs/srs/pull/4126): Edge: Improve stability for state and fd closing. v6.0.139 (#4126)
* v6.0, 2024-07-13, Merge [#4111](https://github.com/ossrs/srs/pull/4111): DASH: Fix time unit error for disposing. v6.0.138 (#4111)