IssueTracker

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Please provide as much information as possible. At least, this should include a description of your issue and steps to reproduce the problem. If possible please provide a summary of what steps or workarounds you have already tried, and any docs or articles you found (un)helpful.

Problem you have encountered:
When using Transcoder API to generate a single thumbnail with spritesheet, some results are single-color background images, such as fully black images.

What you expected to happen:
By indicating a percentage and a color, the API would continue generating images until it finds the first one that does not contain the specified color equal or higher than the specified percentage.

Steps to reproduce:
NA

Other information (workarounds you have tried, documentation consulted, etc):