Alexey Khit
56 lines
1.2 KiB
Markdown
56 lines
1.2 KiB
Markdown
# HTML5
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**1. Autoplay video tag**
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[Video auto play is not working](https://stackoverflow.com/questions/17994666/video-auto-play-is-not-working-in-safari-and-chrome-desktop-browser)
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> Recently many browsers can only autoplay the videos with sound off, so you'll need to add muted attribute to the video tag too
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```html
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<video id="video" autoplay controls playsinline muted></video>
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```
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**2. [Safari] pc.createOffer**
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Don't work in Desktop Safari:
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```js
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pc.createOffer({offerToReceiveAudio: true, offerToReceiveVideo: true})
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```
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Should be replaced with:
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```js
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pc.addTransceiver('video', {direction: 'recvonly'});
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pc.addTransceiver('audio', {direction: 'recvonly'});
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pc.createOffer();
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```
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**3. pc.ontrack**
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TODO
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```js
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pc.ontrack = ev => {
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const video = document.getElementById('video');
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// when audio track not exist in Chrome
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if (ev.streams.length === 0) return;
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// when audio track not exist in Firefox
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if (ev.streams[0].id[0] === '{') return;
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// when stream already init
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if (video.srcObject !== null) return;
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video.srcObject = ev.streams[0];
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}
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```
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## Useful links
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- https://www.webrtc-experiment.com/DetectRTC/
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- https://divtable.com/table-styler/
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- https://www.chromium.org/audio-video/
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