From 074785cea106179cb3305637055ab0a009ca74f2 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Tue, 8 Dec 2020 14:42:52 -0500 Subject: initial commit --- files/pt-br/web/html/element/track/index.html | 162 ++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) create mode 100644 files/pt-br/web/html/element/track/index.html (limited to 'files/pt-br/web/html/element/track') diff --git a/files/pt-br/web/html/element/track/index.html b/files/pt-br/web/html/element/track/index.html new file mode 100644 index 0000000000..3e8d7dd53a --- /dev/null +++ b/files/pt-br/web/html/element/track/index.html @@ -0,0 +1,162 @@ +--- +title: +slug: Web/HTML/Element/track +tags: + - Elemento + - HTML + - HTML5 + - Web + - legenda +translation_of: Web/HTML/Element/track +--- +
{{HTMLRef}}
+ +

O elemento HTML <track> é usado como filho dos elementos de mídia{{HTMLElement("audio")}} e {{HTMLElement("video")}}. Ele permite que você especifique faixas de texto temporizadas (ou dados baseados em tempo), por exemplo, para lidar automaticamente com legendas. As faixas são formatadas em WebVTT format (arquivos .vtt) — Web Video Text Tracks or Timed Text Markup Language (TTML).

+ +
{{EmbedInteractiveExample("pages/tabbed/track.html", "tabbed-standard")}}
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Categorias de conteúdoNenhuma
Conteúdo permitidoNenhum, é um {{Glossary("empty element")}}.
Omissão de tagComo é um elemento vazio, a tag inicial deve estar presente e a tag final não deve estar presente.
Permite ParentesUm elemento de mídia, antes de qualquer conteúdo de fluxo.
Funções ARIA permitidasNenhum
Interface DOM{{domxref("HTMLTrackElement")}}
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Atributos

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Este elemento inclui os atributos globais.

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+
{{htmlattrdef("default")}}
+
This attribute indicates that the track should be enabled unless the user's preferences indicate that another track is more appropriate. This may only be used on one track element per media element.
+
{{htmlattrdef("kind")}}
+
How the text track is meant to be used. If omitted the default kind is subtitles. If the attribute is not present, it will use the subtitles. If the attribute contains an invalid value, it will use metadata. (Versions of Chrome earlier than 52 treated an invalid value as subtitles.) The following keywords are allowed: +
    +
  • subtitles +
      +
    • Subtitles provide translation of content that cannot be understood by the viewer. For example dialogue or text that is not English in an English language film.
      • +
    • Subtitles may contain additional content, usually extra background information. For example the text at the beginning of the Star Wars films, or the date, time, and location of a scene.
      • +
    +
    • +
  • captions +
      +
    • Closed captions provide a transcription and possibly a translation of audio.
      • +
    • It may include important non-verbal information such as music cues or sound effects. It may indicate the cue's source (e.g. music, text, character).
      • +
    • Suitable for users who are deaf or when the sound is muted.
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    +
    • +
  • descriptions +
      +
    • Textual description of the video content.
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    • Suitable for users who are blind or where the video cannot be seen.
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    +
    • +
  • chapters +
      +
    • Chapter titles are intended to be used when the user is navigating the media resource.
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    +
    • +
  • metadata +
      +
    • Tracks used by scripts. Not visible to the user.
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    +
    • +
+
+
{{htmlattrdef("label")}}
+
A user-readable title of the text track which is used by the browser when listing available text tracks.
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{{htmlattrdef("src")}}
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Address of the track (.vtt file). Must be a valid URL. This attribute must be specified and its URL value must have the same origin as the document — unless the {{HTMLElement("audio")}} or {{HTMLElement("video")}} parent element of the track element has a crossorigin attribute.
+
{{htmlattrdef("srclang")}}
+
Language of the track text data. It must be a valid BCP 47 language tag. If the kind attribute is set to subtitles, then srclang must be defined.
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Usage notes

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The type of data that track adds to the media is set in the kind attribute, which can take values of subtitles, captions, descriptions, chapters or metadata. The element points to a source file containing timed text that the browser exposes when the user requests additional data.

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A media element cannot have more than one track with the same kind, srclang, and label.

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Examples

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<video controls poster="/images/sample.gif">
+   <source src="sample.mp4" type="video/mp4">
+   <source src="sample.ogv" type="video/ogv">
+   <track kind="captions" src="sampleCaptions.vtt" srclang="en">
+   <track kind="descriptions"
+     src="sampleDescriptions.vtt" srclang="en">
+   <track kind="chapters" src="sampleChapters.vtt" srclang="en">
+   <track kind="subtitles" src="sampleSubtitles_de.vtt" srclang="de">
+   <track kind="subtitles" src="sampleSubtitles_en.vtt" srclang="en">
+   <track kind="subtitles" src="sampleSubtitles_ja.vtt" srclang="ja">
+   <track kind="subtitles" src="sampleSubtitles_oz.vtt" srclang="oz">
+   <track kind="metadata" src="keyStage1.vtt" srclang="en"
+     label="Key Stage 1">
+   <track kind="metadata" src="keyStage2.vtt" srclang="en"
+     label="Key Stage 2">
+   <track kind="metadata" src="keyStage3.vtt" srclang="en"
+     label="Key Stage 3">
+   <!-- Fallback -->
+   ...
+</video>
+
+ +

Specifications

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SpecificationStatusComment
{{SpecName('HTML WHATWG','embedded-content.html#the-track-element','track element')}}{{Spec2('HTML WHATWG')}} 
{{SpecName("HTML5 W3C", "embedded-content-0.html#the-track-element", "track element")}}{{Spec2("HTML5 W3C")}}Initial definition
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Browser compatibility

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{{Compat("html.elements.track")}}

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See also

+ + -- cgit v1.2.3-54-g00ecf