Unable to play certain content protected by Widevine

[nakamura-work]

Overview

Certain content protected by Widevine does not play correctly on ShakaPlayerEmbedded + Widevine CDM 15.2.4.

Build environment

• macOS Catalina (10.15.6)
• Xcode 11.7 (11E801a)
  • shaka-player-embedded/master
  • https://github.com/google/shaka-player-embedded/commit/10d9b5e0ec737c714c7d40c62593b9fae8514a36
  • ../configure --ios --cpu arm64 --disable-demo --eme-impl ../../cdm/shaka_plugin/dev_cdm.json
  • Widevine CDM 15.2.4
  • commit/ba4f023a2029d53558dce3761a1d1d389035a34a

Execution environment

• iPhone 11 Pro / iOS 13.7
• iPad Pro (11 inch) 2018 / iPadOS 13.7

Detail

We tried the following steps and collected the logs.

1) Start playback. 2) Wait for Activity Indicator finished, then move forward with seek bar 3) Quit playing when Activity Indicator (after seek) finished

Cannot play from beginning to end of the content

manifest: https://demo.unified-streaming.com/video/tears-of-steel/tears-of-steel-dash-widevine.ism/.mpd license_server: https://cwip-shaka-proxy.appspot.com/no_auth log: tears-of-steel-dash-widevine.ism.log

Content confirmed to be playable

manifest: https://storage.googleapis.com/wvmedia/cenc/h264/tears/tears_sd.mpd license_server: https://proxy.staging.widevine.com/proxy log: wvmedia_cenc_h264_tears.log

Supplement

• Content without DRM confirmed to be playable
• The problematic content confirmed to be playable following environments
  • iOS app with iOS CDM 14.4.2
  • Shaka Player (browser)
  • ExoPlayer