question

85836613 avatar image
0 Votes"
85836613 asked JohnDeutscher-4652 answered

Videos transformed by Azure Media Services start with black frames. How can I remove them?

Hi,

I use Azure Media Services to transform videos our customers upload.
Transformed videos always seem to start with black frames if original videos have no black frame.
I think these black frames are added by Azure Media Services, but I cannot find the way to remove them.
I have read the following REST API document.
https://docs.microsoft.com/en-us/rest/api/media/transforms/create-or-update
I tried preset transform of "H264 Single Bitrate 720p", but the result is the same.
Is Starting with the black frames the spec of Azure Media Services?
Can I remove them?

azure-media-services
· 1
5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

I think these black frames are added by Azure Media Services, but I cannot find the way to remove them.

Sorry, my understanding was wrong.
Black frames are not added, but start time is delayed.

before transform: 0.000
after transform: 0.066

But I cannot find the way not to change the start time. Please let me know it if it's possible.

0 Votes 0 ·

1 Answer

JohnDeutscher-4652 avatar image
0 Votes"
JohnDeutscher-4652 answered

It is possible that your source file contains what is known as an Edit List in the container format due to some upstream process, software or camera hardware.
The best way to solve for this is to open a support ticket in the Azure Portal, and upload a sample file that is exhibiting the behavior.
In addition, provide a couple of Job Id's that you have run already with the support ticket.

Thanks,
John D.

5 |1600 characters needed characters left characters exceeded

Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.