ApsaraVideo Media Processing:How do I specify a resolution for an output video?

If your input videos include both landscape and portrait orientations, such as 1920 × 1080 and 1080 × 1920 pixels, define the output resolution by specifying the longer or shorter side in pixels.

Configuration methods

• When you create a transcoding template in the MPS console, set the Resolution parameter to Set by Long and Short Sides.

• When you call the SubmitJobs or AddTemplate operation, set the LongShortMode parameter to true, the Width parameter to the long side of the output video, and the Height parameter to the short side of the output video.

If your input videos use different aspect ratios, such as 16:9 and 4:3, and you want to preserve the original aspect ratios after transcoding, enable proportional scaling.

• When you configure a transcoding template, specify either the output width or height and leave the other dimension empty, or specify either the longer or shorter side and leave the other empty. The unspecified dimension is proportionally scaled to match the aspect ratio of the input video.

• For videos in both landscape and portrait modes, we recommend that you enable auto-rotate screen and define the output resolution by the longer or shorter side. This prevents excessively large or small frame sizes.

  Note

  If you specify only the output width or height, you may be charged at a higher tier than expected. For example, if you set the output height to 720 pixels and the input aspect ratio exceeds 16:9, the output width exceeds 720 pixels, which incurs additional fees.

Configuration methods

• When you create a transcoding template in the MPS console, set the Resolution parameter to Set by Long and Short Sides or Set by Width and Height and specify only one of the longer side and shorter side or one of the output width and output height.

• When you call the SubmitJobs or AddTemplate operation, specify only one of the Width and Height parameters and set the LongShortMode parameter to true.