AWS Elemental MediaConvert now supports video passthrough

[AWS Elemental MediaConvert](https://aws.amazon.com/mediaconvert/) now supports video passthrough for mezzanine video formats. You can now run MediaConvert jobs that preserve the original video essence without re-encoding for intra-frame-only video formats such as AVC Intra, Apple ProRes, VC3, and JPEG2000. Video passthrough enables you to use MediaConvert for tasks like trimming content, changing audio tracks, and changing output containers without re-compressing video. Leaving the video unprocessed often results in faster job completion times and lower costs compared to equivalent jobs which transcode the video. Video passthrough is available in all regions where AWS Elemental MediaConvert is available. Visit the [AWS region table](https://aws.amazon.com/about-aws/global-infrastructure/regional-product-services/) for a full list of AWS Regions supported by MediaConvert, and the [pricing page](https://aws.amazon.com/mediaconvert/pricing/) for more pricing details.