File | Ferncast Knowledge Base

Option	Description
Filename prefix	Sets the naming scheme for files recorded with this sink. Placeholders are used to differentiate multiple files generated with the same sink. Check the tooltip for available placeholders.
Maximum file duration	Sets the maximum file duration in seconds. Once this length is reached, the current file recording ends, and a new file is started. Setting “0” disables maximum file duration.
Maximum file size	Sets the maximum file size in kB. Once this size is reached, the current file recording ends, and a new file is started. Setting “0” disables maximum file duration.
Align segments to wall clock	(Only applicable if Maximum file duration is not “0”) Toggles whether new files are started when the number of second since the unix epoch modulo reaches maximum file duration.
File multiplexer	Dropdown: Selects what file multiplexer (container) is used for the recording. default: Uses the default file multiplexer for the configured encoder element. none: No file multiplexer is used. Ogg: Ogg container. Recommended for Vorbis, FLAC and Opus. mp4: MP4 container. Recommended for AAC, MP3, and MP2. Matroska: Matroska container format. Supports many codecs. WAV: Lossless container.
Write downloadable files	Toggles whether files recorded with this sink may be downloaded from the Archive. If this is “Off", files generated with this sink cannot be downloaded.
Persistent temporary files	Toggles whether temporary files are written to volatile memory ("Off") or persistent storage ("On"). Temporary files include partial recordings in the process of being recorded.
Cue in	Sets a cue in delay for the recording in miliseconds. If a value other than “0” is set, this is the time after the PIPE is started, when recording begins.

!	New placeholders
	The automatic file naming supports various placeholders to name files according to dynamic variables. If you require placeholders not currently supported, please reach out to support@ferncast.de.