From 0843980350b8c90178bf0e5eb226274dd4d3cf9d Mon Sep 17 00:00:00 2001 From: Frank Liberato Date: Mon, 6 Apr 2026 21:14:44 +0000 Subject: [PATCH 1/5] enterfullscreen --- index.bs | 203 ++++++++++++++++++++++++++++++------------------------- 1 file changed, 110 insertions(+), 93 deletions(-) diff --git a/index.bs b/index.bs index 0aa28bc..3de074b 100644 --- a/index.bs +++ b/index.bs @@ -82,9 +82,9 @@ platform UI or media keys, thereby improving the user experience.

The API introduced in this specification has very low impact with regards to - privacy. Part of the API allows a website to receive - commands from the user via buttons or other form of controls which might - sometimes introduce a new input layer between the user and the website. + privacy. Part of the API allows a website to receive commands from the user + via buttons or other form of controls which might sometimes introduce a new + input layer between the user and the website.

@@ -122,9 +122,9 @@ platform UI or media keys, thereby improving the user experience.

The API introduced in this specification has very low impact with regards to - security. Part of the API allows a website to expose metadata - that can be used by the user agent. The user agent obviously needs to use - this data with care. + security. Part of the API allows a website to expose metadata that can be + used by the user agent. The user agent obviously needs to use this data with + care.

@@ -154,8 +154,8 @@ platform UI or media keys, thereby improving the user experience.

- In general, all security considerations related to the display - of notifications from a website should apply here. It is worth noting that + In general, all security considerations related to the display of + notifications from a website should apply here. It is worth noting that the {{MediaMetadata}} offer less customization than regular web notifications, thus would be harder to spoof.

@@ -293,23 +293,23 @@ platform UI or media keys, thereby improving the user experience. preferred artwork image from metadata's {{MediaMetadata/artwork}} of the active media session. -
  • Let request be a new [=request=] whose [=request/URL=] is the - preferred artwork image's {{MediaImage/src}}, [=request/destination=] - is "image", [=request/mode=] is "no-cors", [=request/credentials mode=] is "include", - and whose [=request/use-URL-credentials flag=] is set. -
    • +
  • Let request be a new [=request=] whose [=request/URL=] is + the preferred artwork image's {{MediaImage/src}}, + [=request/destination=] is "image", [=request/mode=] is "no-cors", + [=request/credentials mode=] is "include", and whose + [=request/use-URL-credentials flag=] is set.
  • - [=Fetch=] request with the following steps executed - as the fetch's [=processResponse=] algorithm. + [=Fetch=] request with the following steps executed as the + fetch's [=processResponse=] algorithm.
      -
    1. +
    2. Let response be the [=response=] given to the fetch's [=processResponse=] algorithm.
    3. If response's [=response/type=] is not - {{ResponseType/"error"}}, attempt to decode response's [=body=] as an - image. + {{ResponseType/"error"}}, attempt to decode response's + [=body=] as an image.
    4. If the image format is supported, use the image as the artwork for @@ -360,25 +360,24 @@ platform UI or media keys, thereby improving the user experience. is to resume the playback.
    5. - pause: the action's - intent is to pause the currently active playback. + pause: the action's intent + is to pause the currently active playback.
    6. - seekbackward: the - action's intent is to move the playback time backward by a short - period (eg. a few seconds). + seekbackward: the action's + intent is to move the playback time backward by a short period (eg. a + few seconds).
    7. seekforward: the action's - intent is to move the playback time forward by a short period (eg. a - few seconds). + intent is to move the playback time forward by a short period (eg. a few + seconds).
    8. - previoustrack: the - action's intent is to either start the current playback from the - beginning if the playback has a notion of beginning, or move to the - previous item in the playlist if the playback has a notion of - playlist. + previoustrack: the action's + intent is to either start the current playback from the beginning if the + playback has a notion of beginning, or move to the previous item in the + playlist if the playback has a notion of playlist.
    9. nexttrack: the action's @@ -386,51 +385,54 @@ platform UI or media keys, thereby improving the user experience. the playback has a notion of playlist.
    10. - skipad: the action's - intent is to skip the advertisement that is currently playing. + skipad: the action's intent + is to skip the advertisement that is currently playing.
    11. stop: the action's intent is to stop the playback and clear the state if appropriate.
    12. - seekto: the action's - intent is to move the playback time to a specific time. + seekto: the action's intent + is to move the playback time to a specific time.
    13. togglemicrophone: the action's intent is to mute or unmute the user's microphone.
    14. - togglecamera: the - action's intent is to turn the user's active camera on or off. + togglecamera: the action's + intent is to turn the user's active camera on or off.
    15. togglescreenshare: the action's intent is to turn the user's active screenshare on or off.
    16. - hangup: the action's - intent is to end a call. + hangup: the action's intent + is to end a call.
    17. - previousslide: the - action's intent is to go back to the previous slide when presenting - slides. + previousslide: the action's + intent is to go back to the previous slide when presenting slides.
    18. nextslide: the action's intent is to go to the next slide when presenting slides.
    19. - enterpictureinpicture: - the action's intent is to open the media session in a - picture-in-picture window. + enterpictureinpicture: the + action's intent is to open the media session in a picture-in-picture + window.
    20. - voiceactivity: the - action's intent is to notify the web page that voice activity has been - detected by the microphone. + enterfullscreen: the + action's intent is to open the media session in fullscreen. +
      21. +
    21. + voiceactivity: the action's + intent is to notify the web page that voice activity has been detected + by the microphone.
      22. @@ -448,8 +450,8 @@ platform UI or media keys, thereby improving the user experience.
      1. If handler is `null`, remove action - from the supported media session actions for {{MediaSession}} - and abort these steps. + from the supported media session actions for {{MediaSession}} and + abort these steps.
      2. Add action to the supported media session actions @@ -490,8 +492,8 @@ platform UI or media keys, thereby improving the user experience. supported media session actions.
      3. - If actions does not contain the key action, - abort these steps. + If actions does not contain the key action, abort + these steps.
      4. Let handler be the {{MediaSessionActionHandler}} associated @@ -629,17 +631,15 @@ platform UI or media keys, thereby improving the user experience. actions.
      5. - Otherwise, remove pause from available - actions. + Otherwise, remove pause + from available actions.
    22. - If the source is a UI element created by the user - agent, it MAY remove some elements from available - actions if there are too many of them compared to the - available space. + If the source is a UI element created by the user agent, + it MAY remove some elements from available actions if + there are too many of them compared to the available space.
    23. Notify the source with the updated list of @@ -668,9 +668,8 @@ platform UI or media keys, thereby improving the user experience. The playback rate of the media. It is a coefficient.
    24. - The last reported playback position of the media. This is - the playback position of the media in seconds when the position - state + The last reported playback position of the media. This is the + playback position of the media in seconds when the position state was created.
      25. @@ -764,6 +763,7 @@ enum MediaSessionAction { "previousslide", "nextslide", "enterpictureinpicture", + "enterfullscreen", "voiceactivity" }; @@ -887,8 +887,7 @@ interface MediaSession {
      • - If state is an empty dictionary, clear the position - state + If state is an empty dictionary, clear the position state and abort these steps.
      • @@ -900,8 +899,8 @@ interface MediaSession { NaN, throw a TypeError.
      • - If state's {{MediaPositionState/position}} is not present, set - it to zero. + If state's {{MediaPositionState/position}} is not present, set it + to zero.
      • If state's position @@ -986,8 +985,8 @@ interface MediaSession {

        1. - If document is not [=fully active=], return [=a promise - rejected with=] InvalidStateError. + If document is not [=fully active=], return [=a promise rejected + with=] InvalidStateError.
        2. If active is true and document's @@ -1017,7 +1016,8 @@ interface MediaSession { and true otherwise.
        3. - If active is currentlyActive, queue a task + If active is currentlyActive, queue a + task using the [=user interaction task source=] to resolve p with undefined and abort these steps.
          4. @@ -1039,8 +1039,8 @@ interface MediaSession { and active.
        4. - Queue a task using the [=user interaction task source=] - to resolve p with undefined. + Queue a task using the [=user interaction task source=] to + resolve p with undefined.
        5. If applyPausePolicy is true, run the following @@ -1053,8 +1053,8 @@ interface MediaSession {
        6. For each {{MediaStreamTrack}} whose source is of type captureKind, - queue a task using the [=user interaction task source=] - to [$set a track's muted state$] to newMutedState. + queue a task using the [=user interaction task source=] to + [$set a track's muted state$] to newMutedState.
        • @@ -1191,9 +1191,9 @@ dictionary MediaMetadataInit {

    -When the convert artwork algorithm with input parameter is -invoked, where the input is a sequence of type {{MediaImage}}, the -user agent MUST run the following steps: + When the convert artwork algorithm with input parameter + is invoked, where the input is a sequence of type {{MediaImage}}, + the user agent MUST run the following steps:

    1. @@ -1277,8 +1277,8 @@ user agent MUST run the following steps:
    2. Perform - SetIntegrityLevel(image, "frozen"), - to prevent accidental mutation by scripts. + SetIntegrityLevel(image, "frozen"), to + prevent accidental mutation by scripts.
    3. Push image to frozenArtwork. @@ -1310,8 +1310,8 @@ user agent MUST run the following steps:
    4. Run convert artwork algorithm with convertedArtwork, and - set the {{MediaMetadata}}'s artwork images as - the result if it succeeds. + set the {{MediaMetadata}}'s artwork images as the + result if it succeeds.
    5. Set the {{MediaMetadata}}'s converted artwork images to @@ -1338,8 +1338,7 @@ user agent MUST run the following steps: session, abort these steps.
    6. - Otherwise, in parallel, run the update metadata - algorithm. + Otherwise, in parallel, run the update metadata algorithm.
    • @@ -1412,15 +1411,15 @@ dictionary ChapterInformationInit { {{ChapterInformation/artwork}} as input.
  • - Set chapterInfo's artwork - images to the result of [=Create a frozen array|creating a frozen - array=] from {{ChapterInformationInit/artwork}}. + Set chapterInfo's artwork images + to the result of [=Create a frozen array|creating a frozen array=] from + {{ChapterInformationInit/artwork}}.
  • Return chapterInfo.
    • - +

    The title attribute reflects the {{ChapterInformation}}'s title. On getting, it @@ -1572,22 +1571,31 @@ of [=pausing all input sources=] and the media session action is {{MediaSessionAction/togglecamera}}, {{MediaSessionAction/togglemicrophone}} or {{MediaSessionAction/togglescreenshare}}. -When the media session action is {{MediaSessionAction/enterpictureinpicture}}, -the enterPictureInPictureReason -dictionary member MUST be provided and is the reason the UA has triggered this -action. +When the media session action is +{{MediaSessionAction/enterpictureinpicture}}, the enterPictureInPictureReason +dictionary member MUST be provided and is the reason the UA has triggered +this action. {{enterPictureInPictureReason}} can have one of the following values:

    • - other: the reason for entering picture-in-picture is not one of the existing enum values + other: + the reason for entering picture-in-picture is not one of the existing enum + values
    • - useraction: the user has taken an explicit action to enter picture-in-picture (e.g. clicking a picture-in-picture button in the user agent UI) + useraction: the user has + taken an explicit action to enter picture-in-picture (e.g. clicking a + picture-in-picture button in the user agent UI)
    • - contentoccluded: the user agent is requesting picture-in-picture because the page has become occluded. - This can happen in various cases like tab switching or tab minimization. + contentoccluded: the + user agent is requesting picture-in-picture because the page has become + occluded. This can happen in various cases like tab switching or tab + minimization.
    @@ -1876,6 +1884,15 @@ media session. +
    + Handling enter fullscreen: + 
    +    navigator.mediaSession.setActionHandler("enterfullscreen", function() {
+      remoteVideo.requestFullscreen();
+    });
+
    +
    +
    Handling voice activity: 
    
From 725a396ea58c87d7b8a7bd9340727aca0914016a Mon Sep 17 00:00:00 2001
From: Frank Liberato 
Date: Mon, 6 Apr 2026 21:32:22 +0000
Subject: [PATCH 2/5] Revert "enterfullscreen"

This reverts commit 0843980350b8c90178bf0e5eb226274dd4d3cf9d.
---
 index.bs | 203 +++++++++++++++++++++++++------------------------------
 1 file changed, 93 insertions(+), 110 deletions(-)

diff --git a/index.bs b/index.bs
index 3de074b..0aa28bc 100644
--- a/index.bs
+++ b/index.bs
@@ -82,9 +82,9 @@ platform UI or media keys, thereby improving the user experience.
 
   
    
     The API introduced in this specification has very low impact with regards to
-    privacy. Part of the API allows a website to receive commands from the user
-    via buttons or other form of controls which might sometimes introduce a new
-    input layer between the user and the website.
+    privacy. Part of the API allows a website to receive
+    commands from the user via buttons or other form of controls which might
+    sometimes introduce a new input layer between the user and the website.
   
    
 
   
    
@@ -122,9 +122,9 @@ platform UI or media keys, thereby improving the user experience.
 
   
    
     The API introduced in this specification has very low impact with regards to
-    security. Part of the API allows a website to expose metadata that can be
-    used by the user agent. The user agent obviously needs to use this data with
-    care.
+    security. Part of the API allows a website to expose metadata
+    that can be used by the user agent. The user agent obviously needs to use
+    this data with care.
   
    
 
   
    
@@ -154,8 +154,8 @@ platform UI or media keys, thereby improving the user experience.
     
    
 
     
    
-      In general, all security considerations related to the display of
-      notifications from a website should apply here. It is worth noting that
+      In general, all security considerations related to the display
+      of notifications from a website should apply here. It is worth noting that
       the {{MediaMetadata}} offer less customization than regular web
       notifications, thus would be harder to spoof.
     
    
@@ -293,23 +293,23 @@ platform UI or media keys, thereby improving the user experience.
         preferred artwork image from metadata's
         {{MediaMetadata/artwork}} of the active media session.
       
-      
  • Let request be a new [=request=] whose [=request/URL=] is
-      the preferred artwork image's {{MediaImage/src}},
-      [=request/destination=] is "image", [=request/mode=] is "no-cors",
-      [=request/credentials mode=] is "include", and whose
-      [=request/use-URL-credentials flag=] is set. 
    • 
+      
  • Let request be a new [=request=] whose [=request/URL=] is the
+        preferred artwork image's {{MediaImage/src}}, [=request/destination=]
+        is "image", [=request/mode=] is "no-cors", [=request/credentials mode=] is "include",
+        and whose [=request/use-URL-credentials flag=] is set.
+      
    • 
       
  • 
-        [=Fetch=] request with the following steps executed as the
-        fetch's [=processResponse=] algorithm.
+        [=Fetch=] request with  the following steps executed
+        as the fetch's [=processResponse=] algorithm.
         
      
-          
    1. 
+	  
    2. 
             Let response be the [=response=] given to the fetch's
             [=processResponse=] algorithm.
           
      3. 
           
    3. 
             If response's [=response/type=] is not
-            {{ResponseType/"error"}}, attempt to decode response's
-            [=body=] as an image.
+            {{ResponseType/"error"}}, attempt to decode response's [=body=] as an
+            image.
           
      4. 
           
    4. 
             If the image format is supported, use the image as the artwork for
@@ -360,24 +360,25 @@ platform UI or media keys, thereby improving the user experience.
         is to resume the playback.
       
      5. 
       
    5. 
-        pause: the action's intent
-        is to pause the currently active playback.
+        pause: the action's
+        intent is to pause the currently active playback.
       
      6. 
       
    6. 
-        seekbackward: the action's
-        intent is to move the playback time backward by a short period (eg. a
-        few seconds).
+        seekbackward: the
+        action's intent is to move the playback time backward by a short
+        period (eg. a few seconds).
       
      7. 
       
    7. 
         seekforward: the action's
-        intent is to move the playback time forward by a short period (eg. a few
-        seconds).
+        intent is to move the playback time forward by a short period (eg. a
+        few seconds).
       
      8. 
       
    8. 
-        previoustrack: the action's
-        intent is to either start the current playback from the beginning if the
-        playback has a notion of beginning, or move to the previous item in the
-        playlist if the playback has a notion of playlist.
+        previoustrack: the
+        action's intent is to either start the current playback from the
+        beginning if the playback has a notion of beginning, or move to the
+        previous item in the playlist if the playback has a notion of
+        playlist.
       
      9. 
       
    9. 
         nexttrack: the action's
@@ -385,54 +386,51 @@ platform UI or media keys, thereby improving the user experience.
         the playback has a notion of playlist.
       
      10. 
       
    10. 
-        skipad: the action's intent
-        is to skip the advertisement that is currently playing.
+        skipad: the action's
+        intent is to skip the advertisement that is currently playing.
       
      11. 
       
    11. 
         stop: the action's intent
         is to stop the playback and clear the state if appropriate.
       
      12. 
       
    12. 
-        seekto: the action's intent
-        is to move the playback time to a specific time.
+        seekto: the action's
+        intent is to move the playback time to a specific time.
       
      13. 
       
    13. 
         togglemicrophone: the
         action's intent is to mute or unmute the user's microphone.
       
      14. 
       
    14. 
-        togglecamera: the action's
-        intent is to turn the user's active camera on or off.
+        togglecamera: the
+        action's intent is to turn the user's active camera on or off.
       
      15. 
       
    15. 
         togglescreenshare: the
         action's intent is to turn the user's active screenshare on or off.
       
      16. 
       
    16. 
-        hangup: the action's intent
-        is to end a call.
+        hangup: the action's
+        intent is to end a call.
       
      17. 
       
    17. 
-        previousslide: the action's
-        intent is to go back to the previous slide when presenting slides.
+        previousslide: the
+        action's intent is to go back to the previous slide when presenting
+        slides.
       
      18. 
       
    18. 
         nextslide: the action's
         intent is to go to the next slide when presenting slides.
       
      19. 
       
    19. 
-        enterpictureinpicture: the
-        action's intent is to open the media session in a picture-in-picture
-        window.
+        enterpictureinpicture:
+        the action's intent is to open the media session in a
+        picture-in-picture window.
       
      20. 
       
    20. 
-        enterfullscreen: the
-        action's intent is to open the media session in fullscreen.
-      
      21. 
-      
    21. 
-        voiceactivity: the action's
-        intent is to notify the web page that voice activity has been detected
-        by the microphone.
+        voiceactivity: the
+        action's intent is to notify the web page that voice activity has been
+        detected by the microphone.
       
      22. 
     
 
@@ -450,8 +448,8 @@ platform UI or media keys, thereby improving the user experience.
     
        
       
      1. 
         If handler is `null`, remove action
-        from the supported media session actions for {{MediaSession}} and
-        abort these steps.
+        from the supported media session actions for {{MediaSession}}
+        and abort these steps.
       
        2. 
       
      2. 
         Add action to the supported media session actions
@@ -492,8 +490,8 @@ platform UI or media keys, thereby improving the user experience.
         supported media session actions.
       
        3. 
       
      3. 
-        If actions does not contain the key action, abort
-        these steps.
+        If actions does not contain the key action,
+        abort these steps.
       
        4. 
       
      4. 
         Let handler be the {{MediaSessionActionHandler}} associated
@@ -631,15 +629,17 @@ platform UI or media keys, thereby improving the user experience.
                 actions.
               
        5. 
               
      5. 
-                Otherwise, remove pause
-                from available actions.
+                Otherwise, remove pause from available
+                actions.
               
        6. 
             
      
           
           
    22. 
-            If the source is a UI element created by the user agent,
-            it MAY remove some elements from available actions if
-            there are too many of them compared to the available space.
+            If the source is a UI element created by the user
+            agent, it MAY remove some elements from available
+            actions if there are too many of them compared to the
+            available space.
           
      23. 
           
    23. 
             Notify the source with the updated list of
@@ -668,8 +668,9 @@ platform UI or media keys, thereby improving the user experience.
         The playback rate of the media. It is a coefficient.
       
      24. 
       
    24. 
-        The last reported playback position of the media. This is the
-        playback position of the media in seconds when the position state
+        The last reported playback position of the media. This is
+        the playback position of the media in seconds when the position
+        state
         was created.
       
      25. 
     
@@ -763,7 +764,6 @@ enum MediaSessionAction {
   "previousslide",
   "nextslide",
   "enterpictureinpicture",
-  "enterfullscreen",
   "voiceactivity"
 };
 
@@ -887,7 +887,8 @@ interface MediaSession {
 
 
        
   
      • 
-    If state is an empty dictionary, clear the position state
+    If state is an empty dictionary, clear the position
+    state
     and abort these steps.
   
        • 
   
      • 
@@ -899,8 +900,8 @@ interface MediaSession {
     NaN, throw a TypeError.
   
        • 
   
      • 
-    If state's {{MediaPositionState/position}} is not present, set it
-    to zero.
+    If state's {{MediaPositionState/position}} is not present, set
+    it to zero.
   
        • 
   
      • 
     If state's position
@@ -985,8 +986,8 @@ interface MediaSession {
 
        
 
          
   
        1. 
-    If document is not [=fully active=], return [=a promise rejected
-    with=] InvalidStateError.
+    If document is not [=fully active=], return [=a promise
+    rejected with=] InvalidStateError.
   
          2. 
   
        2. 
     If active is true and document's
@@ -1016,8 +1017,7 @@ interface MediaSession {
             and true otherwise.
           
          3. 
           
        3. 
-            If active is currentlyActive, queue a
-            task
+            If active is currentlyActive, queue a task
             using the [=user interaction task source=] to resolve
             p with undefined and abort these steps.
           
          4. 
@@ -1039,8 +1039,8 @@ interface MediaSession {
         and active.
       
       
        4. 
-        Queue a task using the [=user interaction task source=] to
-        resolve p with undefined.
+         Queue a task using the [=user interaction task source=]
+         to resolve p with undefined.
       
          5. 
       
        5. 
         If applyPausePolicy is true, run the following
@@ -1053,8 +1053,8 @@ interface MediaSession {
           
        6. 
             For each {{MediaStreamTrack}} whose source is of type
             captureKind,
-            queue a task using the [=user interaction task source=] to
-            [$set a track's muted state$] to newMutedState.
+            queue a task using the [=user interaction task source=]
+            to [$set a track's muted state$] to newMutedState.
           
          7. 
         
        
       
        • 
@@ -1191,9 +1191,9 @@ dictionary MediaMetadataInit {
 
    
 
 
    
-  When the convert artwork algorithm with input parameter
-  is invoked, where the input is a sequence of type {{MediaImage}},
-  the user agent MUST run the following steps:
+When the convert artwork algorithm with input parameter is
+invoked, where the input is a sequence of type {{MediaImage}}, the
+user agent MUST run the following steps:
 
    
 
      
   
    1. 
@@ -1277,8 +1277,8 @@ dictionary MediaMetadataInit {
           
      2. 
           
    2. 
             Perform 
-            SetIntegrityLevel(image, "frozen"), to
-            prevent accidental mutation by scripts.
+            SetIntegrityLevel(image, "frozen"),
+            to prevent accidental mutation by scripts.
           
      3. 
           
    3. 
             Push image to frozenArtwork.
@@ -1310,8 +1310,8 @@ dictionary MediaMetadataInit {
   
      4. 
   
    4. 
     Run convert artwork algorithm with convertedArtwork, and
-    set the {{MediaMetadata}}'s artwork images as the
-    result if it succeeds.
+    set the {{MediaMetadata}}'s artwork images as
+    the result if it succeeds.
   
      5. 
   
    5. 
     Set the {{MediaMetadata}}'s converted artwork images to
@@ -1338,7 +1338,8 @@ dictionary MediaMetadataInit {
         session, abort these steps.
       
      6. 
       
    6. 
-        Otherwise, in parallel, run the update metadata algorithm.
+        Otherwise, in parallel, run the update metadata
+        algorithm.
       
      7. 
     
    
   
    • 
@@ -1411,15 +1412,15 @@ dictionary ChapterInformationInit {
     {{ChapterInformation/artwork}} as input.
   
   
  • 
-    Set chapterInfo's artwork images
-    to the result of [=Create a frozen array|creating a frozen array=] from
-    {{ChapterInformationInit/artwork}}.
+    Set chapterInfo's artwork
+    images to the result of [=Create a frozen array|creating a frozen
+    array=] from {{ChapterInformationInit/artwork}}.
   
    • 
   
  • 
     Return chapterInfo.
   
    • 
 
-
+  
 
    
   The title attribute reflects the
   {{ChapterInformation}}'s title. On getting, it
@@ -1571,31 +1572,22 @@ of [=pausing all input sources=] and the media session action
 is {{MediaSessionAction/togglecamera}}, {{MediaSessionAction/togglemicrophone}}
 or {{MediaSessionAction/togglescreenshare}}.
 
-When the media session action is
-{{MediaSessionAction/enterpictureinpicture}}, the enterPictureInPictureReason
-dictionary member MUST be provided and is the reason the UA has triggered
-this action.
+When the media session action is {{MediaSessionAction/enterpictureinpicture}},
+the enterPictureInPictureReason
+dictionary member MUST be provided and is the reason the UA has triggered this
+action.
 
 {{enterPictureInPictureReason}} can have one of the following values:
 
      
   
    • 
-    other:
-    the reason for entering picture-in-picture is not one of the existing enum
-    values
+    other: the reason for entering picture-in-picture is not one of the existing enum values
   
      • 
   
    • 
-    useraction: the user has
-    taken an explicit action to enter picture-in-picture (e.g. clicking a
-    picture-in-picture button in the user agent UI)
+    useraction: the user has taken an explicit action to enter picture-in-picture (e.g. clicking a picture-in-picture button in the user agent UI)
   
      • 
   
    • 
-    contentoccluded: the
-    user agent is requesting picture-in-picture because the page has become
-    occluded. This can happen in various cases like tab switching or tab
-    minimization.
+    contentoccluded: the user agent is requesting picture-in-picture because the page has become occluded.
+    This can happen in various cases like tab switching or tab minimization.
   
      • 
 
    
 
@@ -1884,15 +1876,6 @@ media session.
    -
    - Handling enter fullscreen: - 
    -    navigator.mediaSession.setActionHandler("enterfullscreen", function() {
-      remoteVideo.requestFullscreen();
-    });
-
    -
    -
    Handling voice activity: 
    
From 4b17b12faa5b3ac09bc1d4e414ec101a296237f8 Mon Sep 17 00:00:00 2001
From: Frank Liberato 
Date: Mon, 6 Apr 2026 21:14:44 +0000
Subject: [PATCH 3/5] enterfullscreen

---
 index.bs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/index.bs b/index.bs
index 0aa28bc..86d8dcc 100644
--- a/index.bs
+++ b/index.bs
@@ -427,6 +427,10 @@ platform UI or media keys, thereby improving the user experience.
         the action's intent is to open the media session in a
         picture-in-picture window.
       
+      
  • 
+        enterfullscreen:
+        the action's intent is to open the media session in full screen.
+      
    • 
       
  • 
         voiceactivity: the
         action's intent is to notify the web page that voice activity has been
@@ -764,6 +768,7 @@ enum MediaSessionAction {
   "previousslide",
   "nextslide",
   "enterpictureinpicture",
+  "enterfullscreen",
   "voiceactivity"
 };
 
@@ -1876,6 +1881,15 @@ media session.
    • +
    + Handling enter fullscreen: + 
    +    navigator.mediaSession.setActionHandler("enterfullscreen", function() {
+      remoteVideo.requestFullscreen();
+    });
+
    +
    +
    Handling voice activity: 
    
From c73dc0f7be7a3619774aa12dd1f75ed2483f4905 Mon Sep 17 00:00:00 2001
From: Frank Liberato 
Date: Mon, 6 Apr 2026 21:33:32 +0000
Subject: [PATCH 4/5] remove space

---
 index.bs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/index.bs b/index.bs
index 86d8dcc..d14d52c 100644
--- a/index.bs
+++ b/index.bs
@@ -429,7 +429,7 @@ platform UI or media keys, thereby improving the user experience.
       
       
  • 
         enterfullscreen:
-        the action's intent is to open the media session in full screen.
+        the action's intent is to open the media session in fullscreen.
       
    • 
       
  • 
         voiceactivity: the

From d0f00a837378f1a593e0d18321aa95eee0ef26d0 Mon Sep 17 00:00:00 2001
From: Frank Liberato 
Date: Thu, 16 Apr 2026 17:02:16 +0000
Subject: [PATCH 5/5] remoteVideo/video

---
 index.bs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/index.bs b/index.bs
index d14d52c..03f0429 100644
--- a/index.bs
+++ b/index.bs
@@ -1876,7 +1876,7 @@ media session.
   Handling picture-in-picture:
   
         navigator.mediaSession.setActionHandler("enterpictureinpicture", function() {
-      remoteVideo.requestPictureInPicture();
+      video.requestPictureInPicture();
     });
    • @@ -1885,7 +1885,7 @@ media session. Handling enter fullscreen: 
         navigator.mediaSession.setActionHandler("enterfullscreen", function() {
-      remoteVideo.requestFullscreen();
+      video.requestFullscreen();
     });