Can not play midroll

[z423821123]

[REQUIRED] Issue description

• When I first initialize the player and jump to the position behind of the midroll, I can't play the midroll. I confirm that it works fine with Exoplayer 2.11.0. However when I upgrade Exoplayer to 2.12.2 and this issue was happened. It is easy to reproduce in demo app.

[REQUIRED] Reproduction steps

1. Call seekto() in demo app, such as player.seekTo(startWindow, 60000);
2. Select this item in demo app
   
   3.Can not play mid-roll

Here is the ImaAdsLoader debug log

2021-01-05 14:27:56.798 11876-11876/com.google.android.exoplayer2.demo W/ImaAdsLoader: onEnded without ad media info
2021-01-05 14:28:07.457 11876-11876/com.google.android.exoplayer2.demo I/ImaAdsLoader: AdEvent: {errorMessage=VAST media file loading reached a timeout of 8 seconds., errorCode=402, type=adPlayError}

[REQUIRED] Version of ExoPlayer being used

2.12.2

[REQUIRED] Device(s) and version(s) of Android being used

Samsung Galaxy S10, Android 10

[z423821123]

Hi @andrewlewis , could you take a look？

[sravan1213]

looks like duplicate of #8349

[andrewlewis]

Thanks for reporting. Just after we report the seek position to the IMA SDK we get CONTENT_RESUME_REQUESTED then CONTENT_PAUSE_REQUESTED for the ad. The problem is that the first CONTENT_RESUME_REQUESTED is interpreted as a request to skip the ad by IMA extension, due to the workaround added to skip VPAID ads in #7832. I will revert that workaround and replace it with a more robust workaround where we instead timeout loading an initial VPAID ad, which should fix the regression.