If the HDR source file is not delivered matted or if there are no inactive pixels, Apple recommends setting all crop dimension attributes to '0' (zero).ДЄll video must begin and end with at least one black frame.

See Music Video Single Crop Dimensions Metadata Example in the iTunes Package Music Specification for details. The HDR source may be delivered in its full-frame state with metadata included to specify the crop rectangle. HDR source may be delivered matted: letterbox, pillarbox, or windowbox. HDR video source that contains embedded audio will be accepted, but the audio will be ignored the audio on the SDR source will be used for bundling. HDR format (DolbyВ® Vision or HDR10) specified as a source attribute HDR source video track should only contain a single edit list entryДuration must match corresponding primary video durationДЇrame count must match corresponding primary video frame count HDR source video must have progressive scan and uniform frame rate If the HD source file is not delivered matted or if there are no inactive pixels, Apple recommends setting all crop dimension attributes to '0' (zero).Дisplay dimensions and PASP must match corresponding primary video display dimensions and PASP The HD source may be delivered in its full-frame state with metadata included to specify the crop rectangle. HD source may be delivered matted: letterbox, pillarbox, or windowbox. * If your original HD source pixel aspect ratio is non-square, contact your iTunes Technical Representative before delivery.Дў9.97 or 25 interlaced frames per second for video-sourced materialДў3.976, 24, 25, or 30 frames per second for digital-progressive or film-sourced material. If the SD source file is not delivered matted or if there are no inactive pixels, Apple recommends setting all crop dimension attributes to '0' (zero).Д¤:3 standard definition video should not be delivered anamorphic 16:9 with matting. If the SD source is matted, the SD source should be delivered in its full-frame state with metadata included to specify the crop rectangle.

Video source may be delivered matted: letterbox, pillarbox, or windowbox. Gamma values are accepted and the value must be between 2.15 and 2.25 Interlaced content must be tagged non-progressive and field ordering must be defined in the streamДЇield dominance must be properly tagged (top field first, bottom field first, or progressive) (ALAC or FLAC lossless compression is acceptable.)Дў Height depends on aspect ratio of source with a maximum of 480 pixelsДЄll encoded content must include pixel aspect ratio (pasp), preferably one that results in a display aspect ratio of 4:3 or 16:9.Дў9.97 interlaced frames per second video source, delivered as either interlaced or de-interlaced properly tagged as progressiveДў4, 25, or 30 frames per second sourced from film, delivered as progressiveДў3.976 frames per second for inverse telecine, delivered as progressive must not be delivered interlaced or delivery will failДЇor mixed frame rate material, contact your iTunes Technical Representative Native resolution of project should be used - do not down-sample. The format of the masters must be 24-bit PCM at a sample rate of 44.1, 48, 88.2, 96, 176.4, or 192 kHz. Use these tools to set an appropriate level so that the encode doesn't show clipping.ДЄlthough Apple doesn't reject masters for specific numbers of clips, audible clipping caused by excessive levels to the encoder may be reason for tracks to not be badged and marketed as an вЂњApple Digital Master.'

(Up-sampling and/or bit-padding of 44.1 kHz/16-bit files is not allowed.)ДЄll masters must have been auditioned as encoded by the current Apple AAC encoder either with the вЂњApple Digital Masters Droplet', 'RoundTripAAC' plug-in, or the Sonnox 'Pro-Codec V2' plug-in that includes Apple's 'iTunes +' AAC CODEC. Source format must have been minimum 24-bit with a minimum sample rate of 44.1 kHz. Apple recommends communicating these best practices to your mastering house: The following lists best practices for producing Apple Digital Masters content. Table 1: ProRes Audio Channel Data Assignment and LevelsД«est Practices for Apple Digital Masters Content.Film Audio/Video and Alt-Audio Container.Music Video Screen Capture Image Profile.WhatвЂ™s New in the iTunes Video and Audio Asset Guide 5.3.8?.Select a topic from the table of contents or search help. ITunes Video and Audio Asset Guide 5.3.8 iTunes Video and Audio Asset Guide 5.3.8

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