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Video on Demand
    Documentation
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    Feature Description

    Last updated: 2023-10-18 10:07:50
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    The Player SDK provides video playback capabilities for live and video-on-demand playback on platforms such as web/HTML5, iOS, Android, and Flutter. The supported features are as detailed below:
    Feature Module
    Feature
    Description
    Web
    iOS and Android
    Flutter
    Playback protocol/format
    Video-on-demand and live playback
    Supports both video-on-demand and live playback capabilities.
    ✓
    ✓
    ✓
    Live playback formats
    Supports live video streaming formats such as RTMP, FLV, HLS, DASH, and WebRTC.
    WebRTC, FLV, HLS, and DASH
    RTMP, FLV, HLS, and WebRTC
    RTMP, FLV, HLS, and WebRTC
    Video-on-demand playback formats
    Supports video-on-demand audio/video formats such as HLS, DASH, MP4, and MP3.
    HLS, MP4, MP3, FLV, and DASH
    MP4, MP3, HLS, and DASH
    MP4, MP3, and HLS
    URL playback
    Play back online videos via their URLs. A URL can be a VOD playback address or the pull address of a live stream.
    ✓
    ✓
    ✓
    File ID playback
    Play back videos via their `FileID` (VOD file ID). The stream of a `FileID` contains videos with multiple definitions, thumbnails, timestamps, and other information.
    ✓
    ✓
    ✓
    Local video playback
    Play back video files saved locally.
    -
    ✓
    ✓
    LEB
    Play back LEB videos with millisecond latency.
    ✓
    ✓
    ✓
    DASH protocol
    Play back videos over the standard DASH protocol.
    ✓
    ✓
    ×
    QUIC-based acceleration
    Use the QUIC transfer protocol to make the video transfer more efficient.
    -
    ✓
    ✓
    SDR/HDR video playback
    Play back SDR videos and HDR videos in HDR 10 and HLG standards.
    -
    ✓
    ✓
    H.264 video playback and software and hardware decoding
    Play back H.264 video sources and support software and hardware decoding.
    ✓
    ✓
    ✓
    H.265 video hardware decoding
    Decode H.265 video sources based on hardware.
    -
    ✓
    ✓
    AV1
    Play back AV1 videos.
    Partially supported
    Partially supported
    Partially supported
    Audio playback
    Play back MP3 and other audio files.
    ✓
    ✓
    ✓
    Dual-channel audio
    Support dual-channel audio playback.
    ×
    ✓
    ✓
    Multi-track
    Supports playback of video files with multiple tracks, allowing switching between tracks, such as switching from English to Chinese.
    ✓
    ✓
    ×
    HTTP header settings
    Use custom HTTP headers when requesting video data.
    ×
    ✓
    ✓
    Support for HTTPS
    Play HTTPS videos.
    ✓
    ✓
    ✓
    HTTP 2.0
    Support the HTTP/2 protocol.
    ✓
    ✓
    ✓
    Playback performance
    Predownloading
    Preownload the content of a video file in advance and configure the size and resolution of the files to be predownloaded. Predownload can greatly reduce the time to first frame (TTFF) and is optimized to reduce the energy consumption of the playback device and deliver a higher performance.
    ✓
    ✓
    ✓
    Buffering during playback
    Download and buffer content at the same time when playing back a video to reduce the network usage. Cache policies can be configured.
    ✓
    ✓
    ✓
    Accurate seek
    Play back the media file at the specified time point on the progress bar. Seeking is accurate to the frame in mobile applications and accurate to the millisecond on the web.
    ✓
    ✓
    ✓
    Adaptive bitrate
    Play back adaptive bitrate streaming videos in HLS, DASH, or WebRTC format at the optimal bitrate automatically selected according to the bandwidth.
    ✓
    ✓
    ✓
    Real-time network download speed
    Get the real-time download speed to display it to end users when lag occurs. This is also a prerequisite for implementing the bandwidth prediction module of adaptive bitrate streaming.
    ✓
    ✓
    ✓
    Multiple instances
    Add multiple players on the same page to play videos at the same time.
    ✓
    ✓
    ✓
    Dynamic frame sync
    Catch up the current live streaming progress in a way similar to fast forward when a lag occurs, so as to guarantee the real-timeness of the live stream.
    ✓
    ×
    ×
    Playback control
    Basic controls
    Support playback control features such as start, stop, pause, and resume.
    ✓
    ✓
    ✓
    Basic picture-in-picture
    Play back media in a small window in PiP mode. For a mobile application integrating the SDK, PiP is supported both within the application and out of the application.
    ✓
    ✓
    ✓
    Advanced picture-in-picture component
    Relative to basic picture-in-picture, it adds support for encryption video picture-in-picture, offline playback picture-in-picture, and instant switching effect.
    -
    ✓
    ×
    Seeking within cache
    Support fast seeking without clearing the cached content during seeking.
    ✓
    ✓
    ✓
    Progress bar marking and thumbnail preview
    Mark a point on the progress bar and display a thumbnail sprite of the video at that time point.
    ✓
    ✓
    ✓
    Thumbnail settings
    Add a custom thumbnail to a video
    ✓
    ✓
    ✓
    Replay, playback loop, and list playback
    Manually or automatically replay the video after playback ends.Play back videos in a playlist in sequence, and loop the playlist to play back the first video in the playlist after the last video ends.
    ✓
    ✓
    ✓
    Checkpoint restart
    Start playback at the point where playback previously stopped.
    ✓
    ✓
    ✓
    Custom playback start time
    Specify the start time for playback.
    ✓
    ✓
    ✓
    Adjustable-speed playback
    Play back media at 0.5x–3x speed without affecting the tone of the audio.
    ✓
    ✓
    ✓
    Background playback
    Continue playing back the audio/video even when the application is switched to the background.
    -
    ✓
    ✓
    Playback callback
    Callbacks for playback status, first frame rendering, end of playback, and playback failure.
    ✓
    ✓
    ✓
    Retry upon playback failure
    Automatically retry when playback fails and automatically reconnect when connection to a live stream fails.
    ✓
    ✓
    ✓
    Volume level settings
    Adjust the volume level or mute a media file in real time.
    ✓
    ✓
    ✓
    Definition switch and naming
    Smoothly switch between multiple definitions of an HLS video with no lags.Give custom names to different playback resolutions.
    ✓
    ✓
    ✓
    Screencapturing
    Capture a frame from a video.
    -
    ✓
    x
    Preview
    Allow viewers to watch a preview of a video.
    ✓
    ✓
    x
    On-screen comments
    Show on-screen comments during playback.
    ✓
    ✓
    x
    Subtitle overlay
    Import subtitle files to add subtitles to videos, WebVTT format is supported on the Web, and VTT and SRT formats are supported on mobile devices.
    ✓
    ✓
    x
    Referer blocklist/allowlist
    Configure an allowlist/blocklist and using the "Referer" field in a playback request to determine whether to allow or block the request.
    ✓
    ✓
    ✓
    Key hotlink protection
    Add parameters for validity period, preview time, and max viewer IP count to playback request URLs to protect videos from unauthorized distribution.
    ✓
    ✓
    ✓
    HLS encryption
    Encrypt HLS streams with a key based on AES.
    ✓
    ✓
    ✓
    Private HLS encryption
    Encrypt videos over private VOD protocols in the cloud. The encrypted videos can be decrypted only through the Player SDK for playback, which effectively prevents videos from being decrypted by various browser extensions and cracking tools.
    ✓
    ✓
    ✓
    Commercial-grade DRM
    Provide native encryption solutions such as Apple FairPlay and Google Widevine.
    ✓
    ✓
    x
    Secure download
    Download encrypted videos and use the Player SDK to decrypt and play the videos.
    -
    ✓
    ✓
    Dynamic watermarks
    Add irregularly moving text watermarks to the player to help deter piracy.
    ✓
    ✓
    x
    Digital watermark
    Apply a digital watermark to videos to help identify and trace pirates at low costs.
    ✓
    ✓
    ✓
    Ghost watermark
    Random time, random position, short-lived appearance on the playback interface, and at a time when the watermark is detected to be abnormally removed, the video playback will automatically stop; it can ensure video safety while almost not affecting the viewing experience.
    ✓
    x
    x
    Display effect
    Custom UI
    Integration solutions with UIs and common playback components with UIs are provided for you to choose as needed.
    ✓
    ✓
    ✓
    Screen filling
    Specify how videos are fitted to the screen.
    ✓
    ✓
    x
    Player size settings
    Customize the player width and height.
    ✓
    ✓
    ✓
    Roll image
    Show an image when playback is paused, which can be used for advertising.
    ✓
    ✓
    x
    Video mirroring
    Flip a video horizontally or vertically.
    ✓
    ✓
    x
    Video rotation
    Rotate videos by a specific angle (you can specify the `rotate` parameter of a video file to rotate a video automatically).
    x
    ✓
    x
    Screen locking
    Play videos in an immersive mode (locking the orientation and hiding system bars).
    -
    ✓
    x
    Brightness adjustment
    Adjust the brightness of a video.
    -
    ✓
    ✓
    Note
    A dash (-) indicates that the feature is not supported or is not applicable to the platform.
    
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