Drive and Photo Service:Value-added billable items

Audio and video transcoding

• By default, the user interface uses LiveTranscoding for playback. The service does not transcode content until it is played.

• The output video from transcoding uses the H.264 encoder by default.

• The source video resolution determines the resolution of the transcoded output. By default, the output resolution is less than or equal to 1920 × 1080. For higher-resolution transcoding, contact us.

• Data from transcoding is saved to the value-added data space of the tenant's Domain for online playback by end users. This process consumes storage volume and incurs storage fees based on the amount of data generated. For unit prices, see Basic billable items.

LiveTranscoding

• Billing components:

  • Billable items generated when you create a playlist: billable item and billable item. LiveTranscoding costs are incurred during initial transcoding. You can control the duration of the initial transcoding using the InitialTranscode parameter.

  • Billable item generated when you play a video: billable item. This fee is incurred only when playback triggers transcoding of a TS file.

  • Fees are incurred for reading source files from Object Storage Service (OSS) for transcoding, writing transcoded files to OSS, and reading files from OSS during playback. For more information about OSS-related fees, see billable items for OSS.

• Formula for calculating LiveTranscoding CUs:

  • Video

    • The efficiency (referred to as eff in the formula) for different video output codecs is 0.3 for H.264 and 1.8 for H.265.

    • Formula:

  Ceiling (eff * Ceiling(Height/240) * Ceiling(Width/240) * Ceiling(FrameRate/30) + 1 ) * Ceiling(VideoStreamDuration) .

  • Audio

    • The efficiency (eff) is 0.3.

    • Formula:

  Ceiling(eff * Ceiling(AudioStreamDuration)).

• Billing rules: Each video stream specified by TargetVideo.Stream and each audio stream specified by TargetAudio.Stream that is processed is billed separately. The following examples show how LiveTranscoding fees are calculated:

  • Example 1: Generating a playlist without playback

    • You call GenerateVideoPlaylist to create a playlist for a 38-minute H.264 video with a resolution of 800×600 and a frame rate of 30. The InitialTranscode duration is set to 0 seconds, and the default TranscodeAhead value is used. The video is not played.

    • Billed items: MediaMeta (1 request).

  • Example 2: Generating a playlist with pre-transcoding but no playback

    • You call GenerateVideoPlaylist to create a playlist for a 38-minute H.264 video with a resolution of 800×600 and a frame rate of 30. The InitialTranscode duration is set to 30 seconds, and the default TranscodeAhead value is used. The video is not played.

    • Billed items:

      • MediaMeta: 1 request.

      • LiveTranscoding (The number of CUs is calculated as follows): Ceiling((0.3 * Ceiling(800/240) * Ceiling(600/240) * Ceiling(30/30) + 1 ) * (Ceiling(30))  + Ceiling(0.3 * Ceiling(30)) =  159 CUs.

  • Example 3: Playing specific segments after generating a playlist

    • You call GenerateVideoPlaylist to create a playlist for a 38-minute H.264 video with a resolution of 800×600 and a frame rate of 30. The InitialTranscode duration is set to 0 seconds, and the default TranscodeAhead value is used. You use the M3U8 playlist to play the video. You start from the beginning and play for 5 minutes (the system pre-transcodes the next 2 minutes by default). Then, you skip to the 15-minute mark and play until the end.

    • Billed items:

      • MediaMeta: 1 request.

      • LiveTranscoding (The number of CUs is calculated as follows): Ceiling((0.3 * Ceiling(800/240) * Ceiling(600/240) * Ceiling(30/30) + 1) * (Ceiling((5+2)*60) + Ceiling((38-15)*60))  + Ceiling(0.3 * Ceiling((5+2) * 60)) + Ceiling(0.3 * Ceiling((38-15) * 60)) = 9540 CUs.

  • Example 4: Billing for multiple users and repeated playback

    • You call GenerateVideoPlaylist to create a playlist for a 38-minute H.264 video with a resolution of 800×600 and a frame rate of 30. The InitialTranscode duration is set to 0 seconds, and the default TranscodeAhead value is used.

      User A uses the M3U8 playlist to play the video from the beginning for 5 minutes and then stops.

      User B uses the M3U8 playlist to start playing the video from the 15-minute mark until the end.

      User C uses the M3U8 playlist to play the video from beginning to end.

    • Billed items:

      • MediaMeta: 1 request.

      • LiveTranscoding (The number of CUs is calculated as follows): Ceiling((0.3 * Ceiling(800/240) * Ceiling(600/240) * Ceiling(30/30) + 1) * Ceiling(38*60) + Ceiling(0.3 * Ceiling(38 * 60))  = 12084 CUs .

• Terms:

  • Width: The width of the output video resolution.

  • Height: The height of the output video resolution.

  • FrameRate: The video frame rate.

  • VideoStreamDuration: The duration of the video stream.

  • AudioStreamDuration: The duration of the audio stream.

  • eff: The CU coefficient.

  • Ceiling(x) function: Returns the smallest integer that is greater than or equal to x.

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