[mythtv] IPTV/HLS/M3U: Failing to parse EXT-X-VERSION 7

Sat Aug 10 06:51:34 UTC 2024

I added https://github.com/MythTV/mythtv/issues/936

@Klaas

My holidays are starting, a serious look I can have from end of September. 

https://developer.apple.com/documentation/http-live-streaming/about-the-ext-x-version-tag

https://datatracker.ietf.org/doc/html/draft-pantos-hls-rfc8216bis

Is there any other documentation you use?

From: Klaas de Waal <klaas.de.waal at gmail.com> 
Sent: Friday, August 9, 2024 10:14 PM
To: Development of MythTV <mythtv-dev at mythtv.org>
Cc: Angela <angela.schmid at wolke7.net>
Subject: Re: [mythtv] IPTV/HLS/M3U: Failing to parse EXT-X-VERSION 7

Hi Angela,

Looks like the parser must be extended as you suggest.

I think I am the last one who modified the iptv code.... I do not think there is anything planned on extending the parser.

If you can actually fix it yourself then that is greatly appreciated; I am happy to have a look at it and put it in master if it looks OK and does not cause a crash.

Maybe you can create a github issue for this in https://github.com/MythTV/mythtv/issues; this does not guarantee anything but it does prevent the issue being forgotten.

Thanks,

Klaas. 

On Mon, 5 Aug 2024 at 11:05, Angela via mythtv-dev <mythtv-dev at mythtv.org <mailto:mythtv-dev at mythtv.org> > wrote:

Hi

Running latest master.

Streams from Zattoo, Teleboy, famous IPTV providers in Germany/Switzerland, are failing to play in MythTV. They play fine in VLC.

The stream contains the following M3U data:

#EXTM3U

#EXT-X-VERSION:7

#EXT-X-INDEPENDENT-SEGMENTS

#EXT-X-MEDIA:TYPE=AUDIO,GROUP-ID="audio",NAME="deutsch",DEFAULT=YES,AUTOSELECT=YES,LANGUAGE="deu",URI="https://zba6-0-hls7-live.zahs.tv/telebielingue/t_track_audio_bw_128000000_num_0_tid_2_p_10_l_de_nd_1600_mbr_2999.m3u8?z32=MF2......"

#EXT-X-STREAM-INF:BANDWIDTH=2999000,CODECS="avc1.4d4020,mp4a.40.2",RESOLUTION=1024x576,FRAME-RATE=50,AUDIO="audio",CLOSED-CAPTIONS=NONE

https://zba6-0-hls7-live.zahs.tv/telebielingue/t_track_video_bw_2799000_num_0_tid_1_nd_1600_mbr_2999.m3u8?z32=MF2......

Error found in backend.log:

StreamHandler m3u.cpp:106 (ParseVersion) - #EXT-X-VERSION is 7, but we only understand 0 through 3

I changed the source to also allow version 7, with the following failures, and the stream does not play:

2024-08-05 10:41:19.523190 I [344463/352425] StreamHandler m3u.cpp:120 (ParseStreamInformation) - Parsing stream from https://zba6-1-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2WI2L

2024-08-05 10:41:19.523196 I [344463/352425] StreamHandler m3u.cpp:132 (ParseStreamInformation) - #EXT-X-STREAM-INF: expected PROGRAM-ID=<value>, using -1

2024-08-05 10:41:19.523200 I [344463/352425] StreamHandler m3u.cpp:157 (ParseStreamInformation) - bandwidth adaptation detected (program-id=-1, bandwidth=8000000

2024-08-05 10:41:20.590946 D [344463/352428] HLSPlaylist m3u.cpp:367 (ParseProgramDateTime) - https://zba6-1-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2WI2L tag not supported: #EXT-X-PROGRAM-DATE-TIME #EXT-X-PROGRAM-DATE-TIME:2024-08-05T08:39:56.800+00:00

2024-08-05 10:41:21.603634 D [344463/352428] HLSPlaylist m3u.cpp:367 (ParseProgramDateTime) - https://zba6-1-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2WI2L tag not supported: #EXT-X-PROGRAM-DATE-TIME #EXT-X-PROGRAM-DATE-TIME:2024-08-05T08:39:56.800+00:00

2024-08-05 10:41:22.615515 D [344463/352428] HLSPlaylist m3u.cpp:367 (ParseProgramDateTime) - https://zba6-1-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2WI2L tag not supported: #EXT-X-PROGRAM-DATE-TIME #EXT-X-PROGRAM-DATE-TIME:2024-08-05T08:39:58.400+00:00

2024-08-05 10:44:24.025961 I [344463/358923] StreamHandler m3u.cpp:120 (ParseStreamInformation) - Parsing stream from https://zh4-11-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2W

2024-08-05 10:44:24.025965 I [344463/358923] StreamHandler m3u.cpp:132 (ParseStreamInformation) - #EXT-X-STREAM-INF: expected PROGRAM-ID=<value>, using -1

2024-08-05 10:44:24.025969 I [344463/358923] StreamHandler m3u.cpp:157 (ParseStreamInformation) - bandwidth adaptation detected (program-id=-1, bandwidth=8000000

2024-08-05 10:44:25.103642 D [344463/358926] HLSPlaylist m3u.cpp:367 (ParseProgramDateTime) - https://zh4-11-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2Wtag not supported: #EXT-X-PROGRAM-DATE-TIME #EXT-X-PROGRAM-DATE-TIME:2024-08-05T08:43:00.800+00:00

2024-08-05 10:44:26.117132 D [344463/358926] HLSPlaylist m3u.cpp:367 (ParseProgramDateTime) - https://zh4-11-hls7-live.zahs.tv/HD_s1/t_track_video_bw_7800000_num_0_tid_1_nd_1600_mbr_8000.m3u8?z32=MF2Wtag not supported: #EXT-X-PROGRAM-DATE-TIME #EXT-X-PROGRAM-DATE-TIME:2024-08-05T08:43:02.400+00:00

Is there a chance version 7 will be supported? Is it planned?

Cheers

Angela

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