Successful playback with bad widevine license proxy

[David Komer]

When I package some content with the test key info, I am able to play it back (via shaka player) regardless of whether or not I supply the correct license server url

With the wrong url, I do see errors and the demo player gives me a big red box, but the content still plays.

Here's how I packaged the content (basically like the README.md):

packager \

input=output/transcodes/323031355f7465617273/512.mp4,stream=video,output=output/dash/323031355f7465617273/512.mp4 \

input=output/transcodes/323031355f7465617273/1024.mp4,stream=video,output=output/dash/323031355f7465617273/1024.mp4 \

input=output/transcodes/323031355f7465617273/2048.mp4,stream=video,output=output/dash/323031355f7465617273/2048.mp4 \

input=output/transcodes/323031355f7465617273/4096.mp4,stream=video,output=output/dash/323031355f7465617273/4096.mp4 \

--enable_widevine_encryption \

--crypto_period_duration 0 \

--signer widevine_test \

--key_server_url https://license.uat.widevine.com/cenc/getcontentkey/widevine_test \

--aes_signing_key 1ae8ccd0e7985cc0b6203a55855a1034afc252980e970ca90e5202689f947ab9 \

--aes_signing_iv d58ce954203b7c9a9a9d467f59839249 \

--content_id 323031355f7465617273 \

--mpd_output output/dash/323031355f7465617273/323031355f7465617273.mpd

Valid proxy: https://proxy.uat.widevine.com/proxy

Invalid proxy: http://google.com (just so it tries to grab *something* and doesn't hang)

With the invalid proxy the big red box does say Shaka Error DRM.LICENSE_REQUEST_FAILED, but the video is playing just fine below it

Shaka Error DRM.LICENSE_REQUEST_FAILED

[David Komer]

Also relevant - if I open any of the unpackaged files (e.g. output/transcodes/*.mp4) in VLC, it plays as expected

if I open any of the packaged files (i.e. output/dash/*.mp4) in VLC, it does not play - presumably because it's encrypted

(removing the encryption settings yields packaged files that do play in VLC, as expected)

[KongQun Yang]

Hi David,

There is a default clear lead of 10 seconds. The leading 10 seconds will always play regardless of whether or not a correct license server url is provided. You can set --clear_lead to 0 to remove the clear lead.

-- KongQun Yang (KQ)

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[David Komer]

Excellent, thanks!

-- KongQun Yang (KQ)

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