Fix the video attachments now fetch the URL once on appear and pause when swiping to another item in the gallery. (#934)

* Fix the video attachments now fetch the URL once on appear and pause when swiping to another item in the gallery.

* Resume playback once the video appears

Author: sheep-q

CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 - Show attachment title instead of URL in the `FileAttachmentPreview` view [#930](https://github.com/GetStream/stream-chat-swiftui/pull/930)
 - Fix overriding title color in `ChannelTitleView` [#931](https://github.com/GetStream/stream-chat-swiftui/pull/931)
 - Use channel capabilities for validating delete message action [#933](https://github.com/GetStream/stream-chat-swiftui/pull/933)
+- Fix the video attachments now fetch the URL once on appear and pause when swiping to another item in the gallery [#934](https://github.com/GetStream/stream-chat-swiftui/pull/934)
 
 # [4.86.0](https://github.com/GetStream/stream-chat-swiftui/releases/tag/4.86.0)
 _August 21, 2025_

Sources/StreamChatSwiftUI/ChatChannel/Gallery/GalleryView.swift

@@ -168,6 +168,10 @@ struct StreamVideoPlayer: View {
             }
         }
         .onAppear {
+            guard avPlayer == nil else {
+                avPlayer?.play()
+                return
+            }
             fileCDN.adjustedURL(for: url) { result in
                 switch result {
                 case let .success(url):
@@ -179,5 +183,8 @@ struct StreamVideoPlayer: View {
                 }
             }
         }
+        .onDisappear {
+            avPlayer?.pause()
+        }
     }
 }