Trimming is being ignored.

[londonshliach]

I want to encode a small part of a larger video, but the trim settings are not having any effect.

I ran the code exactly as it appears in the example EncodingWithS3InputAndS3OutputAndOffsetAndDuration.php.
The encoding works (and I can play the resulting manifests), but the offset and duration are completely ignored, and the encoding started at the beginning of the file.