Instance Method

determineCompatibleFileTypesWithCompletionHandler:

Reports the compatible file types for the current export session to the specified block.

Declaration

- (void)determineCompatibleFileTypesWithCompletionHandler:(void (^)(NSArray<AVFileType> *compatibleFileTypes))handler;

Parameters

handler

The block to execute with the results. This method makes a copy of the specified block. This parameter must not be nil.

This block takes an array parameter and returns no result. The array contains zero or more NSString objects with the UTIs of the compatible file types. The file types are in no particular order. For a list of constants specifying UTIs for standard file types, see AVFoundation Constants.

Discussion

This method operates on the asset object and preset information that was used to initialize the export session. It uses this information to determine the file types that the export session can write.

This method performs its checks asynchronously on a secondary thread and returns immediately. The results are similarly reported to the specified block on a secondary thread. Because this method actually inspects the asset’s tracks, the tracks are loaded if they have not been already.

See Also

Configuring Export Presets

presetName

The name of the preset used to initialize the session.

+ allExportPresets

Returns all available export preset names.

+ exportPresetsCompatibleWithAsset:

Returns the identifiers compatible with a given asset.

+ determineCompatibilityOfExportPreset:withAsset:outputFileType:completionHandler:

Reports the compatibility of an export present, asset, and output file type to the specified block.

Export Preset Names for Device-Appropriate QuickTime Files

You use these export options to produce QuickTime movie files with video size appropriate to the current device.

Export Preset Names for QuickTime Files of a Given Size

You use these export options to produce QuickTime movie files with a specified video size.

Export Preset Name for iTunes Audio

You use this export option to produce an audio-only MPEG 4 Audio file with appropriate iTunes gapless playback data.

Export Preset Names for Apple Devices

You use these export options to produce playable files for use on specific Apple devices.

Export Preset Name for Pass Through

You use this export option to let all tracks pass through as formatted unless otherwise prohibited.