Hi Thomas,
Thank you for contacting the IMA SDK Support team.
Please find the below responses to your queries:
1. What possibly cause the low fill rate issue? (I have checked around but have no idea what happened)
Ans: Check the minCPM thresholds defined in Ad Exchange Video. A fairly high CPM may result in very low fill rates. To correct this, try either removing the minCPM or removing the ad unit parameter from the ad request (i.e., slotname) to verify whether this is affecting the fill rate. I would recommend you to follow this documentation for more information
2. When the video ad is black fill, will it count as an impression or an unfill?
Ans: Ad Manager counts an impression each time a creative is downloaded in the user's device and has begun to load. Note that the impression is counted before the creative is fully downloaded and viewed by the end user. Check this Counting impressions and clicks for more information
3. Any possible way I can fix the black ad?
Ans: Black ads may appear due to several factors: unavailability of ads, ad rendering issues within the player, incorrect ad requests, video format incompatibility, or problems with the video rendering capabilities of the player.
To investigate the issue kindly share the below details:
![]() |
IMA SDK Team |
Hi Thomas,
Thank you for providing the requested information.
I have checked the provided website and extracted VAST and the mentioned issue is not replicating. Can you please confirm if the mentioned issue is reproducible in our Google HTML sample applications or VSI tool? If yes, kindly provide the sample project reproducing the issue. Also can you confirm if the mentioned issue “Black screen videos” is replicating without PIP(picture in picture)?
You can provide the following details via reply privately to the author option or directly provide it to this link .