Efficient media import

摘要

Some embodiments provide a media-editing application. The application receives a command to import a media file into the media-editing application. The media file includes a sequence of video images. The application copies the media file to a storage location associated with the media-editing application. The method performs several analysis and transcode operations on the media file in parallel. In some embodiments, the application identifies a video image on which to the operations. The application schedules a single set of image preparation operations for the video image to generate one or more sets of image data for the operations. The method sends the image data to the different operations. A same set of image data is sent to at least two of the operations.

主权项

1. A non-transitory machine readable medium storing a media-editing application for execution by at least one processing unit, the media-editing application for creating a composite presentation comprising a plurality of media clips, the media-editing application comprising sets of instructions for:
identifying a video image for sending to a plurality of destinations to perform, in parallel, a plurality of operations on the image, each destination requiring the video image as a set of image data in a particular format in order to perform a different operation on the image; scheduling a plurality of image preparation operations to be performed on the video image before sending the video image to the plurality of different destinations, the scheduling comprising:
scheduling a first set of image preparation operations from the plurality of image preparation operations to be performed on the image, each image preparation operation of the first set performed to generate a set of image data in a format that is required by every destination in the plurality of destinations; andscheduling a second set of image preparation operations from the plurality of image preparation operations to be performed on the image, after the first set of operations, to generate a set of image data in a particular format that is required by each destination, wherein each image preparation operation of the second set is specific to less than all of the destinations; andsending the sets of image data to the different destinations, wherein a same set of image data is sent to at least two of the destinations.