On what basis IMA SDK (Android) selects VAST media file?

[Raihan Abbas]

Hi IMA Team

Can you please share some more information about on what basis IMA SDK for Android selects a bitrate for playing an Ad?

As mentioned here "Default value, -1, means the bitrate will be selected by the SDK." 

As per my understanding, IMA SDK will select a VAST media file with the highest bitrate available (if the internet speed is good enough).

Is that correct?

[Jeff Blanc]

Hey guy i have a roku channel i publish via direct publihser i want to help me monetized it 

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[ima-sdk-adv...@google.com]

Hi Raihan,

Thank you for reaching out to us. The SDK does select the better bitrate based on device network condition. Having said that for the Android SDK you can set a maximum bitrate using setBitrateKbps to set a maximum bitrate. The SDK will pick media with bitrate below the specified max and the platform will play media files that are supported for that particular player. The default value, -1, means the bitrate will be selected by the SDK. However, our built-in bandwidth detection currently only works with Google ad servers.

Regards,

Deepika Uragayala

IMA SDK Team

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[Raihan Abbas]

Hi Deepika,

It is observed that IMA SDK always selects a media file with the highest bitrate available in spite of low internet connection.

I have tried changing the bandwidth of Network and I have observed that IMA SDK always selects a file with the highest bitrate (which is 3200 Kbit/s in my case) even if the internet speed is too slow.

You can reproduce this issue by following the steps below.

1. Extend Video Load Timout

renderingSettings.setLoadVideoTimeout(500000);

2. Limit internet bandwidth to 1Mbs and check which bitrate file is selected.

3. Increase Internet speed to 10 Mbs and check which bitrate file is selected.

IMA SDK will select the same file in both cases.

If SDK select bitrate based on device network condition than I assume it should behave adaptively and must select lower bitrate file in case of slow internet and vice versa.

Thank you 

[ima-sdk-adv...@google.com]

Hi Raihan,

Thank you for providing more insights with regards to the issue. Can you share the ad tag that you're seeing this with? I'd like to test for myself to make sure I exactly understand the behavior that you're seeing. You can use the forum's Reply Privately feature if you'd prefer not to share publicly on the forum.

Regards,

Deepika Uragayala

IMA SDK Team