<commit_before>project_path: /web/_project.yaml
book_path: /web/updates/_book.yaml
description: A round up of the media updates in Chrome 61.

{# wf_updated_on: 2017-08-22 #}
{# wf_published_on: 2017-07-28 #}
{# wf_tags: news,chrome61,media #}
{# wf_featured_image: /web/updates/images/generic/animations.png #}
{# wf_featured_snippet: Background video track optimizations and automatic video fullscreen when device is rotated are here! #}
{# wf_blink_components: Blink>Media #}

# Media Updates in Chrome 61 {: .page-title }

{% include "web/_shared/contributors/beaufortfrancois.html" %}

- Chrome now [disables video tracks when a MSE video is played in the
  background](#background-video-track-optimizations) to optimize performance.
- Video will [go fullscreen when device is rotated](#auto-fullscreen-rotate).

## Background video track optimizations (MSE only) {: #background-video-track-optimizations}

Warning: This feature has been delayed until Chrome 62. See [http://crbug.com/752726]().

To improve battery life, Chrome now disables video tracks when the video is
played in the background if the video uses [Media Source Extensions (MSE)].

You can inspect these changes by going to the `chrome://media-internals` page,
and filter for the "info" property. When the tab containing a playing video
becomes inactive, you'll see a message like `Selected video track: []`
indicating that the video track has been disabled. When the tab becomes active
again, video track is re-enabled automatically.

<figure>
  <img src="/web/updates/images/2017/07/media-internals.png"
       alt="Log panel in the chrome://media-internals page"><commit_msg>Fix link (#4963)<commit_after>project_path: /web/_project.yaml
book_path: /web/updates/_book.yaml
description: A round up of the media updates in Chrome 61.

{# wf_updated_on: 2017-08-22 #}
{# wf_published_on: 2017-07-28 #}
{# wf_tags: news,chrome61,media #}
{# wf_featured_image: /web/updates/images/generic/animations.png #}
{# wf_featured_snippet: Background video track optimizations and automatic video fullscreen when device is rotated are here! #}
{# wf_blink_components: Blink>Media #}

# Media Updates in Chrome 61 {: .page-title }

{% include "web/_shared/contributors/beaufortfrancois.html" %}

- Chrome now [disables video tracks when a MSE video is played in the
  background](#background-video-track-optimizations) to optimize performance.
- Video will [go fullscreen when device is rotated](#auto-fullscreen-rotate).

## Background video track optimizations (MSE only) {: #background-video-track-optimizations}

Warning: This feature has been delayed until Chrome 62. See [http://crbug.com/752726](http://crbug.com/752726).

To improve battery life, Chrome now disables video tracks when the video is
played in the background if the video uses [Media Source Extensions (MSE)].

You can inspect these changes by going to the `chrome://media-internals` page,
and filter for the "info" property. When the tab containing a playing video
becomes inactive, you'll see a message like `Selected video track: []`
indicating that the video track has been disabled. When the tab becomes active
again, video track is re-enabled automatically.

<figure>
  <img src="/web/updates/images/2017/07/media-internals.png"
       alt="Log panel in the chrome://media-internals page">
{'fraction_non_alphanumeric': 0.1015625, 'fraction_numerical': 0.024639423076923076, 'mean_word_length': 4.871252204585538, 'pattern_counts': {'":': 0, '<': 7, '<?xml version=': 0, '>': 9, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '4150875', 'n_tokens_mistral': 1061, 'n_tokens_neox': 971, 'n_words': 357}