Release notes of ApsaraVideo Player SDK for iOS

• An advanced adaptive bitrate streaming (ABR) algorithm is added to optimize live streaming and on-demand video playback that are based on the HTTP Live Streaming (HLS) and Dynamic Adaptive Streaming over HTTP (DASH) protocols, and improve bitrate adaptability during low-latency HTTP live streaming (LL-HLS).
• Configuration on the cloud is supported.
• The issue is fixed where videos are played in an incorrect ratio.
• The player stability is improved.
• The supplemental enhancement information (SEI) logic that automatically deletes duplicate information is removed from the SDK.
• The network disconnection handling logic is optimized for the list player.
• The issue is fixed where video playback occasionally fails to start up in some special scenarios.

• By default, HTTP 2.0 is used.
• The HLS format is supported by the list player. However, you need to enable local caching first.
• HttpDNS is supported (you need to enable it manually).
• Video postprocessing is supported.
• The SDK package size is reduced.
• License settings are supported.
• The video enhancement postprocessing module is supported (requires a license).
• The video frame insertion postprocessing module is supported (requires a license).
• The catalyst tool is supported (you need to submit a ticket or contact Alibaba Cloud customer service).

• Up to 5x speed playback is supported.
• ASS subtitles can be formatted.
• Streams encrypted by using Alibaba Cloud proprietary cryptography can be played over Real-Time Messaging Protocol (RTMP) or HTTP Flash Video (HTTP-FLV).
• Low-latency HLS is supported.
• Local caching is supported.
• Preloading is supported.
• HTTP/2 is supported.
• Multi-bitrate switching of live streams in the HLS format is optimized.
• Pseudo-live streaming of DASH is optimized.
• The compatibility and stability are optimized.
• The response speed of the stop operation is improved.
• The issue is fixed where stuttering occurs during fast response to the prepare and stop operations.

• Referer settings are supported for the list player.
• The FFmpeg version is updated to 4.3.1.
• Video delay is supported.
• Callbacks that use UTC time are supported for HLS.
• The feature of clearing video frames is supported.
• The player stability is improved.
• Bluetooth-based audio playback is optimized.
• 9.x decoding is optimized to prevent black screen errors.

• A callback for statistics during audio and video playback is added.
• The compatibility with DASH is optimized.
• Multi-bitrate switching of live streams is optimized.
• The reporting of media information is optimized.
• The speed of switching between Wi-Fi and the cellular network is improved.
• The feature of destroying the view during playback is supported.
• The user experience of switching between the foreground and background is improved.

• DASH is supported.
• The backward buffer is supported.
• The download speed can be obtained.
• The compatibility of ApsaraVideo Player SDK for iOS is improved.
• The OpenGL for Embedded Systems (OpenGL ES) dependency is removed.

• The logic of synchronizing audio signals with video signals is optimized.
• The display of external subtitles is optimized.
• The stability is improved.
• The issue is fixed where an error occurs when streams that are encrypted by using Alibaba Cloud proprietary cryptography are played in the background.

• Hybrid log-gamma (HLG) high dynamic range (HDR) videos can be played.
• Rotation, mirroring, snapshots, and scaling mode changes are supported for HDR video playback.
• Audio playback in more than two sound channels is supported.
• The stability of audio playback is improved.
• The support for the system player is optimized.

• The response speed of the stop operation is improved.
• The logic of selecting the default resolution for video ID (VID)-based playback is optimized.
• The HLS format is supported.
• The precision of the playback progress is optimized.
• The display of external subtitles is optimized.
• The Conan dependency is removed.
• Widevine is supported in the player core.
• HDR10 videos can be played.

• The download logic is optimized.
• The compatibility with the MP4 and HLS formats is optimized.
• The audio extraction feature is supported.
• The issue is fixed where noise occurs when videos are switched during list playback.

• The compatibility with the videos that have different frame rates is optimized.
• The issue is fixed where frames are lost when you resume playback for a video that is played at an adjusted speed.
• The compatibility with MP4 files is optimized.
• The list playback feature is optimized.
• The setting logic of volume and the mute mode is optimized.
• The response speed of the stop operation is improved.

• The compatibility with the HLS format is optimized.
• The Alibaba Real-Time Communication (ARTC) package is separated to reduce the dependency of ARTC on SDK versions.
• FairPlay digital rights management (DRM) is supported.
• OpenSSL is removed to reduce the package size.
• The PixelBuffer parameter can be returned for HLS encrypted streams.

• The progress display logic is optimized.
• The display of external subtitles is optimized.
• The logic of synchronizing audio signals with video signals is optimized.
• The startup loading time of VID-based list playback is shortened.
• The playback of audio with specific sample rates is optimized.
• The listener logic for frontend and backend events is modified. iPad devices are compatible.
• The issue is fixed where software decoding is not supported for interlaced videos.

• Encrypted live streaming based on HLS is supported.
• The resolution type of IP addresses can be specified.
• The precache feature is optimized.
• The video background color can be specified.
• The latency of HLS-based playback is reduced.
• The compatibility with players is optimized.
• The open source player CicadaPlayer is used as the player core.
• Parameters can be set in the AudioSession operation.

• An operation for obtaining the frame rate is added. A callback for video rendering is added.
• The stability of the SDK is improved.

• The startup bitrate can be specified for multi-bitrate streams.
• The logic of synchronizing audio signals with video signals is optimized.
• The stability of the SDK is improved.

• Precise seeking during resolution switching is supported for on-demand videos.
• Frame synchronization is supported for live streaming.
• The stability of the SDK is improved.

• Supplemental enhancement information (SEI) in H.264-encoded videos can be obtained.
• Frame synchronization is supported for FLV-based live streaming.

• Web Video Text Tracks (WebVTT)-based thumbnails are supported.
• Precise seeking is supported.
• The encryption type can be specified for videos to be requested.
• Real-Time Streaming (RTS) is supported.

• The AliPlayer operation is added to improve the usability.
• Software and hardware decoding is supported for H.265-encoded videos. H.265 live streaming is supported.
• The preview feature is supported.
• The AliListPlayer operation is added.
• HLS streams can be played based on the MasterPlaylist parameter.
• Multiple audio tracks, multiple subtitles, multiple bitrates, and thumbnails are supported.
• The adaptive switching and seamless switching of bitrates are supported.
• Caching during the URL-based playback of MP4 videos is supported. The name of the cache file can be obtained.
• An operation for offline download is added to improve the user experience of download.

• The regions outside China are supported when you play videos by using ApsaraVideo VOD.
• On-demand audio files can be played and downloaded.
• The issue of unexpected quits is fixed.

• Loop playback is optimized.
• The issue is fixed where repetitive VID-based requests cannot be stopped.
• The issue is fixed where stuttering occurs when the player is switched from the background to the foreground.
• The issue is fixed where the player unexpectedly quits when you scroll through the short video playlist at a high speed.

• The issue is fixed where the video image is not changed when you seek to a specified position after a pause.
• The issue is fixed where no error message appears when seeking fails due to network disconnection.
• The issue is fixed where a downloaded video cannot be redownloaded after it is deleted.
• The issue is fixed where the player unexpectedly quits when it is switched between the foreground and background multiple times during playback in iOS 8.

• HLS encrypted content can be downloaded.
• An operation is added for obtaining the video rotation angle.
• An operation is added for event tracking based on traceID.

ApsaraVideo Player SDK V3.4.6 for iOS

ApsaraVideo Player SDK V3.4.6 for iOS (with a simulator)

Sample code

• The issue is fixed where a 4003 error message is returned when you seek to the end of a video.
• The issue is fixed where you cannot seek to the start of a video.
• The issue is fixed where an error message is returned if you seek to a position beyond the buffer when the network is disconnected during playback.
• The player user interface (UI) is open sourced.

ApsaraVideo Player SDK V3.4.5 for iOS

ApsaraVideo Player SDK V3.4.5 for iOS (with a simulator)

Sample code

• The issue is fixed where a video cannot be played if its title contains spaces.
• The issue is fixed where playback cannot be resumed after image streams are ingested in the background.

ApsaraVideo Player SDK V3.4.4 for iOS

ApsaraVideo Player SDK V3.4.4 for iOS (with a simulator)

Sample code

• The issue is fixed where MP3 files that have thumbnails cannot be played.
• The issue is fixed where the player mutes the audio during playback when the device screen is turned off.

ApsaraVideo Player SDK V3.4.3 for iOS

ApsaraVideo Player SDK V3.4.3 for iOS (with a simulator)

Sample code

• Referer-based hotlink protection is supported.
• Data logs are optimized.
• Third-party dynamic frameworks are deleted.

ApsaraVideo Player SDK V3.4.2 for iOS

ApsaraVideo Player SDK V3.4.2 for iOS (with a simulator)

Sample code

ApsaraVideo Player SDK V3.4.1 for iOS

ApsaraVideo Player SDK V3.4.1 for iOS (with a simulator)

Sample code

• Time shifting is supported.
• Secure download from ApsaraVideo for Media Processing (MPS) is supported.
• The demo that illustrates continuous playback is added.

ApsaraVideo Player SDK V3.4.0 for iOS

ApsaraVideo Player SDK V3.4.0 for iOS (with a simulator)

Sample code

• The issue is fixed where the Security Token Service (STS) token expires due to inconsistent time zones.
• The issue is fixed where the metadata is lost when cached and stored videos are rotated.
• The issue is fixed where an error occurs when applications are uploaded to App Store.
• The error messages of playback status and the error messages that appear when the STS token expires are optimized.
• The download completion logic is optimized.
• The issue is fixed where the Domain Name System (DNS) request fails when the network is disconnected.
• Resolution switching during video playback is supported.

ApsaraVideo Player SDK V3.3.4 for iOS

ApsaraVideo Player SDK V3.3.4 for iOS (with a simulator)

Sample code

• Live Q&A is supported.
• The issue is fixed where the UI thread is stuck.

ApsaraVideo Player SDK V3.3.3 for iOS

ApsaraVideo Player SDK V3.3.3 for iOS (with a simulator)

Sample code

ApsaraVideo Player SDK V3.3.2 for iOS

ApsaraVideo Player SDK V3.3.2 for iOS (with a simulator)

Sample code

• A callback for the start of loop playback is added.
• An operation is added for rotating a video during video rendering.
• An operation is added for image mirroring.
• A callback for playback completion is added to the player UI.
• Caching during URL-based video playback is supported.

ApsaraVideo Player SDK V3.3.0 for iOS

ApsaraVideo Player SDK V3.3.0 for iOS (with a simulator)

Sample code

ApsaraVideo Player SDK V3.2.2 for iOS

ApsaraVideo Player SDK V3.2.2 for iOS (with a simulator)

Sample code

• Loop playback is supported.
• The snapshot feature is supported.
• In-buffer seeking is supported.
• The features of ApsaraVideo Player Basic and ApsaraVideo Player Pro are combined in the demo.
• Callbacks for full-screen events are supported for the player UI.

ApsaraVideo Player SDK V3.2.0 for iOS

ApsaraVideo Player SDK V3.2.0 for iOS (with a simulator)

Sample code