cannot display subtitle when play dash link

[kevinbol]

test link: https://vm2.dashif.org/dash/vod/testpic_2s/cea608_and_segs.mpd

there is no subtitle display when play this link, while works for hls link.

[pwsses]

This Sample Application for External Subtitle contents. I think, test link content has internal subtitle. So you need some modify in main.js code

[kevinbol]

yes, it is internal subtitle. could you give a code sample for implement internal subtitle?

[pwsses]

It is simple. Just add onsubtitlechange listener on setListener before prepare. ex) var listener = { onsubtitlechange: function(duration, text, type, attriCount, attributes) { console.log(text) } }

webapis.avplay.close(); webapis.avplay.open(videoURL); webapis.avplay.setListener(listener); webapis.avplay.prepare(); webapis.avplay.setDisplayRect(0,0,1920,1080); //check your window size. webapis.avplay.play();

[kevinbol]

yes, it is just same as external subtitle, the difference is that it doesn't need the download code. but, no subtitle display at my side. is there any other place which may should be modified?

[pwsses]

No that is all. I tested your contents and I received text on console.log. check on onsubtitlechange function by console.log.

[kevinbol]

please excuse me for troubling you. but I did not received the onsubttilechange event when play this dash linkl. I test it on 2017 and 2018 smart TV, all failed. in fact, I have look over much samsung specific about subtitle implement, and webvtt subtitle of hls link works. I cannot get any clue about why it doesn't works for dash link.

[kevinbol]

is there any setting on the TV system?

[pwsses]

Can U share your sample code to me? I will check it.

[kevinbol]

forTry.wgt.zip I used this code, which is cloned from yours.

[kevinbol]

I use my own certificate to build it, does it cause the issue?

[pwsses]

No your code has some problem, your video has internal subtitle but you try external subtitle which is 'http://yt.sweet.tv/VTTConverter/78/820876311/original_ro_0.vtt' And the value of downloaded subtitle path is wrong. you must using filesystem for path.

In case of Internal subtitle content, just simple.

function test0() { try { webapis.avplay.close(); webapis.tvinfo.registerInAppCaptionControl(true); webapis.tvinfo.showCaption(true); webapis.avplay.open(videoURL); webapis.avplay.setListener(listener); webapis.avplay.prepare(); var AVPlayer = document.getElementById('av-player'); webapis.avplay.setDisplayRect(AVPlayer.offsetLeft, AVPlayer.offsetTop, AVPlayer.offsetWidth, AVPlayer.offsetHeight); webapis.avplay.play(); } catch(e) { console.log('test0 throw exception : ' + JSON.stringify(e)); } }

[kevinbol]

thank you very much. after modifying it according to your guide, TTML and CC subtitle can display on 2018 Smart TV. but still cannot display on 2016 Smart TV. what the difference on 2016 TV? official document declare it supports TTML and CC since 2016 TV

[kevinbol]

hi, does 2016 TV support TTML and CC internal subtitle of dash link ?

[pwsses]

Hi. As I know, avplay spec is same between 2016 and 2019. But if your 2016 Smart TV doesn't display that, you should ask to samsung develpor site. (https://developer.samsung.com/home.do)

[kevinbol]

ok, thanks

[octadevtn]

tizen 6.0 and tizen 6.5 subtitle included in video mkv cannot get truck text subtitle we get only truck audio and video