ALL_ADS_COMPLETED may or may not be notified depending on the seek

Hello.

We confirmed that there is a difference in the behavior of the ALL_ADS_COMPLETED event.

・Seek directly to the end of content(※1)
⇒the ALL_ADS_COMPLETED event will be notified.

・Seek before the end of the content and play until the end of the content(※2)
⇒the ALL_ADS_COMPLETED event will not be notified.

We don't know why there is a difference in these 2 situations.
However, when we asked IMA SDK team, they told us that this is the default behavior of the ExoPlayer-IMA extension.
And they recommended that we contact the AndroidX Media issues queue why the behavior changes whether the seek is performed or not.

Could you tell us why the behavior is diffrerent?

Steps：
①Play the pre-roll
②Seek to the playback position(11:00) of Mid3 (skipping the playback of Mid1 and Mid2)
③Play the last ad, Mid3

In the case where all_ads_completed is notified:(※1)
④Seek to the end of playback
⑤all_ads_completed is notified

In the case where all_ads_completed is not notified:(※2)
④Wait until the end of playback
⑤all_ads_completed is not notified

Contents :
Movie :
https://storage.googleapis.com/wvmedia/clear/h264/tears/tears_h264_high_1080p_20000.mp4
Ads :

<vmap:VMAP xmlns:vmap="http://www.iab.net/videosuite/vmap" version="1.0">
<vmap:AdBreak timeOffset="start" breakType="linear" breakId="preroll">
<vmap:AdSource id="preroll-ad-1" allowMultipleAds="false" followRedirects="true">
<vmap:AdTagURI templateType="vast3">
<![CDATA[ https://pubads.g.doubleclick.net/gampad/ads?slotname=/21775744923/external/vmap_ad_samples&sz=640x480&ciu_szs=300x250&cust_params=sample_ar%3Dpremidpost&url=&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&useragent=Mozilla/5.0+(Windows+NT+10.0%3B+Win64%3B+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/111.0.0.0+Safari/537.36,gzip(gfe)&vad_type=linear&vpos=preroll&pod=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&vrid=1264775&cmsid=496&video_doc_id=short_onecue&kfa=0&tfcd=0 ]]>
</vmap:AdTagURI>
</vmap:AdSource>
</vmap:AdBreak>
<vmap:AdBreak timeOffset="00:03:20.000" breakType="linear" breakId="midroll-1">
<vmap:AdSource id="midroll-1-ad-1" allowMultipleAds="false" followRedirects="true">
<vmap:AdTagURI templateType="vast3">
<![CDATA[ https://pubads.g.doubleclick.net/gampad/ads?slotname=/21775744923/external/vmap_ad_samples&sz=640x480&ciu_szs=300x250&cust_params=sample_ar%3Dpremidpost&url=&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&cue=15000&useragent=Mozilla/5.0+(Windows+NT+10.0%3B+Win64%3B+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/111.0.0.0+Safari/537.36,gzip(gfe)&vad_type=linear&vpos=midroll&pod=2&mridx=1&rmridx=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&vrid=1264775&cmsid=496&video_doc_id=short_onecue&kfa=0&tfcd=0 ]]>
</vmap:AdTagURI>
</vmap:AdSource>
</vmap:AdBreak>
<vmap:AdBreak timeOffset="00:6:40.000" breakType="linear" breakId="midroll-2">
<vmap:AdSource id="midroll-2-ad-1" allowMultipleAds="false" followRedirects="true">
<vmap:AdTagURI templateType="vast3">
<![CDATA[ https://pubads.g.doubleclick.net/gampad/ads?slotname=/21775744923/external/vmap_ad_samples&sz=640x480&ciu_szs=300x250&cust_params=sample_ar%3Dpremidpost&url=&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&cue=15000&useragent=Mozilla/5.0+(Windows+NT+10.0%3B+Win64%3B+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/111.0.0.0+Safari/537.36,gzip(gfe)&vad_type=linear&vpos=midroll&pod=2&mridx=1&rmridx=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&vrid=1264775&cmsid=496&video_doc_id=short_onecue&kfa=0&tfcd=0 ]]>
</vmap:AdTagURI>
</vmap:AdSource>
</vmap:AdBreak>
<vmap:AdBreak timeOffset="00:10:00.000" breakType="linear" breakId="midroll-3">
<vmap:AdSource id="midroll-3-ad-1" allowMultipleAds="false" followRedirects="true">
<vmap:AdTagURI templateType="vast3">
<![CDATA[ https://pubads.g.doubleclick.net/gampad/ads?slotname=/21775744923/external/vmap_ad_samples&sz=640x480&ciu_szs=300x250&cust_params=sample_ar%3Dpremidpost&url=&unviewed_position_start=1&output=xml_vast3&impl=s&env=vp&gdfp_req=1&ad_rule=0&cue=15000&useragent=Mozilla/5.0+(Windows+NT+10.0%3B+Win64%3B+x64)+AppleWebKit/537.36+(KHTML,+like+Gecko)+Chrome/111.0.0.0+Safari/537.36,gzip(gfe)&vad_type=linear&vpos=midroll&pod=2&mridx=1&rmridx=1&ppos=1&lip=true&min_ad_duration=0&max_ad_duration=30000&vrid=1264775&cmsid=496&video_doc_id=short_onecue&kfa=0&tfcd=0 ]]>
</vmap:AdTagURI>
</vmap:AdSource>
</vmap:AdBreak>
</vmap:VMAP>

Specs：
ExoPlayer version used：2.18.1
Device：Pixel5
Android version：13, 14
App：https://github.com/googleads/googleads-ima-android/releases/tag/3.34.0-0