ttml from teletext and scte35 #272

kuznetcoff777 · 2017-09-20T10:48:23Z

System info

Operating System: <e.g. macOS Sierra, Ubuntu 14.04 trusty etc>centos7
Shaka Packager Version: <e.g. v1.6.1, commit SHA etc>9c861d0-release

Issue and steps to reproduce the problem

Packager Command:
packager 'input=udp://233.1.1.1:20001?interface=172.17.0.2,stream=audio,init_segment=live-audio-init.mp4,segment_template=live-audio-$Number$.mp4,bandwidth=96000' 'input=udp://233.1.1.1:20001?interface=172.17.0.2,stream=video,init_segment=live-video-ld-init.mp4,segment_template=live-video-ld-$Number$.mp4,bandwidth=350000' 'input=udp://233.1.1.1:20002?interface=172.17.0.2,stream=video,init_segment=live-video-sd-init.mp4,segment_template=live-video-sd-$Number$.mp4,bandwidth=650000' 'input=udp://233.1.1.1:20003?interface=172.17.0.2,stream=video,init_segment=live-video-hd-init.mp4,segment_template=live-video-hd-$Number$.mp4,bandwidth=950000' --min_buffer_time 10 --minimum_update_period 10 --time_shift_buffer_depth 1200 --suggested_presentation_delay 20 --mpd_output live.mpd

Extra steps to reproduce the problem?
(1)
(2)

What is the expected result?

What happens instead?

Just want to know if there is teletext and scte35 in udp mcast, if it is possible to get ttml/stpp (subtitle) on output and scte35 markers in mpd file? I found this issue #23, so i suppose there is must be ttml support, but did not find how to do it from udp signal.

kuznetcoff777 · 2017-09-20T11:05:49Z

Found in 1.3.0 version:
"Added Subtitle support for On-Demand: allowing subtitle inputs in webvtt or ttml. Support for subtitle inputs in media files will be added later."

So i suppose there is no support for live udp teteltext -> dash ttml. And also i found nothing about scte35 markers. So i suppose all i listed is not supported, am i right? If so, are you going to make support for this and if yes, then when?

kqyang · 2017-09-20T17:36:20Z

That is not on our road map right now. We don't have much knowledge on how text/subtitle is carried in a udp mcast stream. We will probably need some help here. If you have any documentations on teletext/subtitle or sample contents, we'll be happy to look into it some time.

kuznetcoff777 · 2017-09-21T06:33:44Z

I suppose i can provide sample ts file soon.
What about scte35?

kqyang · 2017-09-21T23:48:22Z

We are looking into scte35. I hope it can be supported in Q4 or Q1 2018, but no guarantees right now.

kuznetcoff777 · 2017-09-22T06:46:07Z

How this guys do scte35, some script inserts scte in mpd? (in mpd there is noticed v1.5.1-c540e5a-release)

https://ctc-live.webcaster.pro/dash/live.mpd

Here is example of scte35:

<?xml version="1.0" encoding="UTF-8"?>
<!--Generated with https://github.com/google/shaka-packager version v1.5.1-c540e5a-release-->
<MPD xmlns="urn:mpeg:dash:schema:mpd:2011" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xlink="http://www.w3.org/1999/xlink" xsi:schemaLocation="urn:mpeg:dash:schema:mpd:2011 DASH-MPD.xsd" xmlns:cenc="urn:mpeg:cenc:2013" xmlns:scte35="urn:scte:scte35:2014:xml" minBufferTime="PT2S" type="dynamic" profiles="urn:mpeg:dash:profile:isoff-live:2011" publishTime="2017-09-22T06:42:43Z" availabilityStartTime="2017-09-20T20:19:56Z" minimumUpdatePeriod="PT2S" timeShiftBufferDepth="PT36S">
  <BaseURL>https://ctc.megacdn.ru/ctc/</BaseURL>
  <Period id="0" start="PT0S">
    <EventStream schemeIdUri="urn:scte:scte35:2014:xml" timescale="90000">
      <Event id="225" presentationTime="11137346943" duration="5400000">
        <scte35:SpliceInfoSection scte35:ptsAdjustment="0" scte35:protocolVersion="0" scte35:tier="4095">
          <scte35:SpliceInsert scte35:spliceEventId="1073742793" scte35:spliceEventCancelIndicator="false" scte35:outOfNetworkIndicator="true" scte35:uniqueProgramId="1" scte35:availNum="8" scte35:availsExpected="255">
            <scte35:Program>
              <scte35:SpliceTime scte35:ptsTime="2547412351"/>
            </scte35:Program>
            <BreakDuration scte35:autoReturn="false" scte35:duration="5400000"/>
          </scte35:SpliceInsert>
          <scte35:AcatilDescriptor scte35:ProviderAvailId="8"/>
        </scte35:SpliceInfoSection>
      </Event>
    </EventStream>
    <AdaptationSet id="0" contentType="audio" segmentAlignment="true">
      <Representation id="0" bandwidth="133664" codecs="mp4a.40.2" mimeType="audio/mp4" audioSamplingRate="44100">
        <AudioChannelConfiguration schemeIdUri="urn:mpeg:dash:23003:3:audio_channel_configuration:2011" value="2"/>
        <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="1ac5d70b-b9d8-5d4b-86e2-d6f248a63301"/>
        <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
          <cenc:pssh>AAAAfHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAFwSEJZFCOgj9ly4lYkfEtXnMXISECOwW3Ovb1RVu7OAYZpwoe8SEBrF1wu52F1LhuLW8kimMwEaEWludmVudG9zd2ViY2FzdGVyIgtjaGFubmVsX2N0Y0jj3JWbBg==</cenc:pssh>
        </ContentProtection>
        <SegmentTemplate timescale="90000" initialization="audio/a_b128000/1505961935_live-audio.mp4?cachetype=live" media="audio/a_b128000/1505961935_live-audio-$Number$.mp4?cachetype=live" startNumber="25038">
          <SegmentTimeline>
            <S t="11136749877" d="361523"/>
            <S t="11137111412" d="361522"/>
            <S t="11137472946" d="361521"/>
            <S t="11137834481" d="361522"/>
            <S t="11138196016" d="361521"/>
            <S t="11138557550" d="361523"/>
            <S t="11138919085" d="361522"/>
            <S t="11139280620" d="361522"/>
            <S t="11139642155" d="361521"/>
            <S t="11140003689" d="361523"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
    </AdaptationSet>
    <AdaptationSet id="1" contentType="video" maxWidth="1024" maxHeight="740" frameRate="90000/3600">
      <Representation id="1" bandwidth="751191" codecs="avc1.4d001e" mimeType="video/mp4" sar="1:1" width="640" height="462">
        <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="964508e8-23f6-5cb8-9589-1f12d5e73172"/>
        <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
          <cenc:pssh>AAAAfHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAFwSEJZFCOgj9ly4lYkfEtXnMXISECOwW3Ovb1RVu7OAYZpwoe8SEBrF1wu52F1LhuLW8kimMwEaEWludmVudG9zd2ViY2FzdGVyIgtjaGFubmVsX2N0Y0jj3JWbBg==</cenc:pssh>
        </ContentProtection>
        <SegmentTemplate timescale="90000" initialization="video/v_360p/1505961935_live-video.mp4?cachetype=live" media="video/v_360p/1505961935_live-video-$Number$.mp4?cachetype=live" startNumber="25147">
          <SegmentTimeline>
            <S t="11136853743" d="360000" r="9"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
      <Representation id="2" bandwidth="401953" codecs="avc1.42001e" mimeType="video/mp4" sar="1:1" width="416" height="308">
        <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="964508e8-23f6-5cb8-9589-1f12d5e73172"/>
        <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
          <cenc:pssh>AAAAfHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAFwSEJZFCOgj9ly4lYkfEtXnMXISECOwW3Ovb1RVu7OAYZpwoe8SEBrF1wu52F1LhuLW8kimMwEaEWludmVudG9zd2ViY2FzdGVyIgtjaGFubmVsX2N0Y0jj3JWbBg==</cenc:pssh>
        </ContentProtection>
        <SegmentTemplate timescale="90000" initialization="video/v_240p/1505961935_live-video.mp4?cachetype=live" media="video/v_240p/1505961935_live-video-$Number$.mp4?cachetype=live" startNumber="25146">
          <SegmentTimeline>
            <S t="11136853743" d="360000" r="9"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
      <Representation id="3" bandwidth="1499506" codecs="avc1.4d001f" mimeType="video/mp4" sar="1:1" width="1024" height="740">
        <ContentProtection value="cenc" schemeIdUri="urn:mpeg:dash:mp4protection:2011" cenc:default_KID="23b05b73-af6f-5455-bbb3-80619a70a1ef"/>
        <ContentProtection schemeIdUri="urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed">
          <cenc:pssh>AAAAfHBzc2gAAAAA7e+LqXnWSs6jyCfc1R0h7QAAAFwSEJZFCOgj9ly4lYkfEtXnMXISECOwW3Ovb1RVu7OAYZpwoe8SEBrF1wu52F1LhuLW8kimMwEaEWludmVudG9zd2ViY2FzdGVyIgtjaGFubmVsX2N0Y0jj3JWbBg==</cenc:pssh>
        </ContentProtection>
        <SegmentTemplate timescale="90000" initialization="video/v_576p/1505961935_live-video.mp4?cachetype=live" media="video/v_576p/1505961935_live-video-$Number$.mp4?cachetype=live" startNumber="25145">
          <SegmentTimeline>
            <S t="11136853743" d="360000" r="9"/>
          </SegmentTimeline>
        </SegmentTemplate>
      </Representation>
    </AdaptationSet>
  </Period>
</MPD>

kqyang · 2017-09-22T17:43:36Z

I have no idea. Looks like it is inserted by an external script. I hope they can tell us how they did it. We welcome contributions!

kuznetcoff777 · 2017-09-25T11:03:20Z

Sent to gmail links for files with scte35 markers and subtitles.

kqyang · 2017-09-25T17:47:53Z

Cool. Thanks!

vaage · 2018-03-02T22:44:50Z

@kuznetcoff777 @kqyang , is this still an active issue?

kqyang · 2018-03-02T22:54:32Z

Yes, we should look into it next quarter. Added it to backlog for now.

ghost · 2018-03-23T08:15:32Z

just curious about this. When it's ready ? Thanks,
Tam

kqyang · 2018-03-23T16:21:43Z

@delgemoon I hope we'll have some time next quarter to work on it if not later.

TheModMaker · 2021-01-22T23:37:57Z

A quick update, we haven't made much/any progress on working on this, but #832 is nearly done and much of the content using DVB is using DVB-SUB and will be supported in #832. We also already support TTML output (not input), which will help with this issue. Also, the SCTE-35 part will be tracked in #352 instead, this will track just handling teletext subtitles.

To whoever implements this, I think the teletext spec is ETS 300 706 and will be wrapped in MP2TS by ETSI EN 301 775. There is a small sample asset at https://trac.ffmpeg.org/ticket/5067.

Canta · 2021-01-27T20:30:12Z

Careful, as there seems to be different "teletext" specs.

One of them is the one linked before, ETS 300 706.
The other one, which seems to be the one implemented in ffmpeg, is ETS 300 472, known as "dvb teletext".

aleek · 2021-02-18T16:30:25Z

@Canta ETS 300 472 specyfies carriage of ETS 300 706 packets in dvb PES packets.

Nixon197 · 2021-12-15T07:54:06Z

Hi

did you make any progress in the implementation of Teletext subtitles?

BR

ghyzo · 2021-12-16T11:29:38Z

Hi, I am not sure what you mean. Can you give me some more information, because I didn't do it recently, if not explained below. What I made recently, 5G and higher( don't abuse it, because I am BramG.,) is not a result of implementation of Teletext subtitels. What I 've made is a shared folder shared with everyone at \\GHYSBRAMPC\fr frtl It seems empty but contains a copy of the 3G driver made by me in the past. Sincerely, Bram Ghys Outlook voor Android<https://aka.ms/AAb9ysg> downloaden

…

________________________________ From: Nixon197 ***@***.***> Sent: Wednesday, December 15, 2021 8:54:19 AM To: google/shaka-packager ***@***.***> Cc: Subscribed ***@***.***> Subject: Re: [google/shaka-packager] ttml from teletext and scte35 (#272) Hi did you make any progress in the implementation of Teletext subtitles? BR — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub<#272 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AAQK66FBGFNYPXYYOV5GU4DURBCSXANCNFSM4D3WXPSA>. Triage notifications on the go with GitHub Mobile for iOS<https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675> or Android<https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub>.

tobbee · 2023-01-24T16:03:13Z

Hi all and an extra ping to @joeyparrish,

Eyevinn Technology, together with CIRES21, is working on an implementation of EBU teletext in MPEG-2 input for Shaka-packager, following the ETSI specifications (ETSI 300 706, 300 468 and 300 472).

The main specification 300 706 has different levels and complexities, so as a first step we intend to implement Level 1 with

text extraction with timing, new-lines and character set for standard latin and Portuguese/Spanish national symbols
specification of what teletext page to extract using the cc_index configuration

Further things that could be implemented are

distinction between captions and subtitles
row numbers (1-24)
alignment heuristics
more character sets
colors and other styling
more configuration parameters if needed

Extraction from MPEG-2 TS input is similar to what is done for DVB subtitles, and we aim to reuse the current text output options. We think that we are on a good track, but if there are special aspects to take into considerations, it would be good to learn about them?

Replaces #1181 * Add support for EBU Teletext input following Level 1.5 of the core specification ETSI EN 300 706 V1.2.1 (2003-04). * Add support for webvtt in MP4 segments output. Closes #272 --------- Co-authored-by: Marcus Spangenberg <marcus.spangenberg@eyevinn.se>

vaage added the Needs Triage label Feb 14, 2018

vaage added the status: waiting on response Waiting on a response from the reporter(s) of the issue label Mar 2, 2018

kqyang added this to the Backlog milestone Mar 2, 2018

kqyang added type: enhancement New feature or request and removed Needs Triage status: waiting on response Waiting on a response from the reporter(s) of the issue labels Mar 2, 2018

TheModMaker mentioned this issue Jan 22, 2021

DVBSUB subtitle #832

Closed

TheModMaker mentioned this issue Jan 22, 2021

Support for live subtitles in DASH stream #631

Closed

marcusspangenberg mentioned this issue Mar 7, 2023

feat: Add input support for EBU Teletext in MPEG-TS #1181

Closed

cosmin mentioned this issue Feb 15, 2024

feat: Add input support for EBU Teletext in MPEG-TS #1344

Merged

joeyparrish closed this as completed in #1344 Feb 23, 2024

github-actions bot added the status: archived Archived and locked; will not be updated label Apr 24, 2024

github-actions bot locked as resolved and limited conversation to collaborators Apr 24, 2024

cosmin removed this from the Backlog milestone May 12, 2024

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

ttml from teletext and scte35 #272

ttml from teletext and scte35 #272

kuznetcoff777 commented Sep 20, 2017 •

edited

Loading

kuznetcoff777 commented Sep 20, 2017

kqyang commented Sep 20, 2017

kuznetcoff777 commented Sep 21, 2017

kqyang commented Sep 21, 2017

kuznetcoff777 commented Sep 22, 2017

kqyang commented Sep 22, 2017

kuznetcoff777 commented Sep 25, 2017

kqyang commented Sep 25, 2017

vaage commented Mar 2, 2018

kqyang commented Mar 2, 2018

ghost commented Mar 23, 2018

kqyang commented Mar 23, 2018 •

edited

Loading

TheModMaker commented Jan 22, 2021

Canta commented Jan 27, 2021

aleek commented Feb 18, 2021

Nixon197 commented Dec 15, 2021

ghyzo commented Dec 16, 2021 via email

tobbee commented Jan 24, 2023

ttml from teletext and scte35 #272

ttml from teletext and scte35 #272

Comments

kuznetcoff777 commented Sep 20, 2017 • edited Loading

System info

Issue and steps to reproduce the problem

kuznetcoff777 commented Sep 20, 2017

kqyang commented Sep 20, 2017

kuznetcoff777 commented Sep 21, 2017

kqyang commented Sep 21, 2017

kuznetcoff777 commented Sep 22, 2017

kqyang commented Sep 22, 2017

kuznetcoff777 commented Sep 25, 2017

kqyang commented Sep 25, 2017

vaage commented Mar 2, 2018

kqyang commented Mar 2, 2018

ghost commented Mar 23, 2018

kqyang commented Mar 23, 2018 • edited Loading

TheModMaker commented Jan 22, 2021

Canta commented Jan 27, 2021

aleek commented Feb 18, 2021

Nixon197 commented Dec 15, 2021

ghyzo commented Dec 16, 2021 via email

tobbee commented Jan 24, 2023

kuznetcoff777 commented Sep 20, 2017 •

edited

Loading

kqyang commented Mar 23, 2018 •

edited

Loading