View Source ExTDLib.Object.UpdateFileGenerationStart (ExTDLib v0.0.4)

The file generation process needs to be started by the application.

NameTypeDescription
generation_idstringUnique identifier for the generation process.
original_pathstringThe path to a file from which a new file is generated; may be empty.
destination_pathstringThe path to a file that must be created and where the new file is generated.
conversionstringString specifying the conversion applied to the original file. If conversion is "#url#" than original_path contains an HTTP/HTTPS URL of a file, which must be downloaded by the application.

More details on telegram's documentation.