Abstract: A method of creating a playlist for a first user includes identifying a first user of a content sharing platform that comprises a plurality of media items, detecting an action performed by the first user with respect to at least one media item of a second user, the action performed by the first user indicates interest of the first user in the at least one media item of the second user, and automatically adding the at least one media item of the second user to the first playlist of the first user.

Abstract: A method for synchronizing media content playback on multiple devices includes receiving a first request of a first user device of a first user to concurrently watch a media item with at least one second user of a second user device, receiving a first communication from the first user device to begin presenting the media item on the first user device, receiving a second communication from the second user device to begin presenting the media item on the second user device, in response to receiving the first communication and the second communication, initiating a synchronized media playback session, in response to a first request of the second user to pause playback of the media item on the second user device, causing a rate of delivery of the media item to the second user device to be changed from a first rate of delivery to a second rate of delivery, and in response to a second request of the second user to resume playback of the media item on the second user device, causing the second rate of delivery of th

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: A method of updating a playlist for a first user includes identifying a client device associated with the first user of a content sharing platform that comprises a plurality of media items, identifying a first playlist of the first user, the first playlist including a first subset of media items, identifying a second subset of media items of the second user, detecting an action performed by the first user with respect to at least one media item of the second subset of media items of the second user, the action performed by the first user indicates interest of the first user in the at least one media item of the second user, and automatically adding the at least one media item of the second user to the first playlist of the first user.

Abstract: Methods, systems, and media for synchronized media content playback on multiple devices are provided.

Abstract: Methods, systems, and media for synchronized media content playback on multiple devices are provided.

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: Methods, systems, and media for synchronized media content playback on multiple devices are provided.

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: A method of updating a playlist for a first user includes identifying a client device associated with the first user of a content sharing platform that comprises a plurality of media items, identifying a first playlist of the first user, the first playlist including a first subset of media items, identifying a second subset of media items of the second user, detecting an action performed by the first user with respect to at least one media item of the second subset of media items of the second user, the action performed by the first user indicates interest of the first user in the at least one media item of the second user, and automatically adding the at least one media item of the second user to the first playlist of the first user.

Abstract: A method of generating a playlist for a first user includes identifying a client device associated with the first user, determining that the first user has requested to add a second user to a set of social connections of the first user, and in response to determining that the first user has requested to add the second user to the set of social connections of the first user, updating one or more playlists associated with the first user to add a media item of the second user, and transmitting to the client device a signal that causes the client device to present at least one of the updated playlists to the first user and provide the first user with access to the media item.

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: A method of generating a playlist for a first user includes identifying a client device associated with the first user, determining that the first user has requested to add a second user to a set of social connections of the first user, and in response to determining that the first user has requested to add the second user to the set of social connections of the first user, updating one or more playlists associated with the first user to add a media item of the second user, and transmitting to the client device a signal that causes the client device to present at least one of the updated playlists to the first user and provide the first user with access to the media item.

Abstract: Aspects of the disclosure describe video playback in group communications. A method includes providing a graphical representation of a video in a user interface (UI) of a messaging application of client device during a group communication, the client device associated with a first user participating in the group communication with other users of a content sharing service, the graphical representation to scroll with messages of the group communication, responsive to receiving a selection of the graphical representation of the video in the UI during the group communication, initiating playback of the video in a video playback portion of the UI, and responsive to detecting that the video playback portion is scrolled at least partially out of view, maintaining the video playback portion of the UI visible to the first user in a persistent position in the UI.

Abstract: A user of a content sharing platform is identified a playlist is generated for the user. The playlist is generated based on one or more of the user's social interactions with other entities and the user's actions associated with other media items. The playlist may be modified or deleted if the user does not access the playlist or does not consume media items from the playlist within a threshold period of time.

Abstract: Methods, systems, and media for adjusting quality level during synchronized media content presentation are provided.

Abstract: Methods, systems, and media for synchronized media content playback on multiple devices are provided.

Abstract: A computer-implemented method for determining the audience appeal of a video hosted by a video hosting service. A video hosting service receives user rating information and user source information about a user who watches a video. Users were not exposed to the video by the video hosting service are included in an “early audience” group, and users who were exposed to the video by the video hosting service are included in a “late audience” group. The video hosting service then calculates a sentiment metric for the early audience and late audience, where the sentiment metric indicates how much the users in each group liked the video. Based on the early audience and late audience sentiment metrics, the video tracking module determines whether the video has a wide audience appeal or a narrow audience appeal.

Abstract: A method is disclosed that includes receiving a notification about an activity pertaining to a user, the notification being directed to a first application and a second application, and identity of the user being associated with a token. The method also includes identifying a first instance of the first application and a first instance of the second application at a user device of the user, and determining the first instance of the first application and the first instance of the second application are associated with the token. The method further includes selecting one of the first instance of the first application or the first instance of the second application to provide the notification at the user device based on the token, and providing the notification to the selected one of the first instance of the first application or the first instance of the second application at the user device.