Return Codes

Return Code	Reason
imNoErr	Operation has completed without error.
imTooWide	File dimensions too large.
imBadFile	Bad file format. To defer an unsupported subtype to a lower priority importer, return this during imOpenFile8 or imGetInfo8.
imUnsupported	Unsupported selector.
imMemErr	Memory error.
imOtherErr	Unknown error.
imNoContent	No audio or video.
imBadRate	Bad audio rate.
imBadCompression	Bad compression.
imBadCodec	Codec not found.
imNotFlat	Unflattened QuickTime movie.
imBadSndComp	Bad sound compression.
imNoTimecode	Timecode supported, but not found.
imMissingComponent	Missing component needed to open the file.
imSaveErr	Error saving file.
imDeleteErr	Error deleting file.
imNotFoundErr	The requested metadata chunk was not found.
imSetFile	Return this from imGetPrefs8 only if you are a custom importer and you need Premiere to alter it's file access information (e.g. a new path or filename is created).
imIterateStreams	Return from imGetInfo8 to indicate that there are more streams to describe. Premiere will send imGetInfo8 for the next stream.
imBadStreamIndex	Return from imGetInfo8 after interating through streams to indicate that there are no more streams to describe.
imCantTrim	Return from imCheckTrim if the file cannot be trimmed by the importer.
imDiskFull	Return from imTrimFile8 if there is not enough space to complete the trim operation.
imDiskErr	Return from imTrimFile8 if there is a general disk or I/O error during the trim operation.
imFileShareViolation	Return from imOpenFile8 if file cannot be opened due to another process having exclusive read access
imIterateFrameSizes	Return from imGetPreferredFrameSize, to be called again to describe more frame sizes for a particular pixel format.
imMediaPending	Return from imGetSourceVideo or imCreateAsyncImporter if the importer is still processing the file and cannot return video frames yet.
imDRMControlled	Return from imOpenFile8 if the file cannot be opened because it is under rights management.
imActivationFailed	Activation of a component failed (usually due to user cancellation). This is used by Premiere Elements.
imFrameNotFound	New in CS4. Return if an importer could not find the requested frame (typically used with async importers)
imBadHeader	New in CS5. The file cannot be opened because of a header error
imUnsupportedCompression	New in CS5. The file has a compression type that the importer does not support
imFileOpenFailed	New in CS5. The importer was unable to open the file on disk
imFileHasNoImportableStreams	New in CS5. The file has no audio or video stream
imFileReadFailed	New in CS5. A read from an open file failed
imUnsupportedAudioFormat	New in CS5. The importer cannot import something in the audio format
imUnsupportedVideoBitDepth	New in CS5. The video bit depth of this file is unsupported by the importer
imDecompressionError	New in CS5. The importer hit an error decompressing the audio or video
imInvalidPreferences	New in CS5. Invalid prefs data was passed to the importer
inFileNotAvailable	New in CS5. Return from imQueryContentState if the file/stream is no longer available because it is offline or deleted
imRequiresProtectedContent	New in CS5.5. Return from imInit if the importer depends on a library that has not been activated yet.
imNoCaptions	New in CC. Return from imInitiateAsyncClosedCaptionScan if the clip has no closed captions, or return from imGetNextClosedCaption when there are no more captions.
imCancel	Return from imGetPrefs8 if user cancels or the plugin cannot open the file (custom/synthetic importer).
imBadFormatIndex	Return this when given an out of range format index, and from imGetIndFormat when plugin has no more formats to enumerate.
imIsCacheable	Return from imInit if a plugin does not need to be called to initialize every time Premiere is launched. This will help reduce the time to launch the application.