Subtitle positionning with webvvt

[PhilippeR]

Hi everyone,
Does Dash.js manage the positioning information of subtitles in WebVTT ?
The result I am currently getting is subtitles that are always centered. No positioning information is taken into account.

Extract from a webvvt file:
00:00:15.480 --> 00:00:19.040 align:left
<c.white>-On dit que la nature est
<c.white>bien faite, mais il faut l'aider.

00:00:19.360 --> 00:00:22.920 align:center
<c.white>Les producteurs taillent 1 à 2 fois
<c.white>par an leurs arbres fruitiers.

00:00:23.200 --> 00:00:25.600 align:center
<c.white>Pourquoi cela est nécessaire ?

00:00:25.920 --> 00:00:27.920 align:right
<c.white>-La taille
<c.white>donne une forme à l'arbre

[dsilhavy]

By default we use native rendering for WebVTT. You might want to check out this demo: https://reference.dashif.org/dash.js/nightly/samples/captioning/vttjs.html

Here we use vtt.js for rendering. Note that for this to work you need to include vtt.min.js:
<script src="../../contrib/videojs-vtt.js/vtt.min.js"></script>

Also update the settings:

            player.updateSettings({
                streaming: {
                    text: {
                        webvtt: {
                            customRenderingEnabled: true
                        }
                    }
                }
            })

[PhilippeR]

Thank you. I will test next week and let you know.

[dsilhavy]

Should be fixed in Nightly: http://reference.dashif.org/dash.js/nightly/samples/dash-if-reference-player/index.html?mpd=http%3A%2F%2F34.241.58.247%2Ftest_webvtt_1%2Fwebvtt_positionning.ism%2Fmanifest.mpd+&debug.logLevel=4&streaming.delay.liveDelayFragmentCount=NaN&streaming.delay.liveDelay=NaN&streaming.buffer.initialBufferLevel=NaN&streaming.liveCatchup.maxDrift=NaN&streaming.liveCatchup.playbackRate.min=NaN&streaming.liveCatchup.playbackRate.max=NaN

[PhilippeR]

Hi Daniel,
Positioning seems to be fixed but at the same time color information is not
anymore taken into account.
I added cue colors in cue text.
Can you check ?

[PhilippeR]

Hi @dsilhavy ,
Forget my last answer and thank you for the fix.
Any idea of the release date ?

[dsilhavy]

Probably mid-April for version 4.7.0

[PhilippeR]

So we can close this discussion. Thank you for your help @dsilhavy