Madek Media Types
Madek classifies uploaded files into the following media_type
s,
for consistent handling in different parts of the system.
It is a mapping based on the content_type
of a file
and expresses how different kinds of files are handled by the application.
The existence of a Preview
with a certain media_type
indicates
that the related MediaFile
was successfully converted.
The media_type
is persisted DB for efficient querying and in particular filtering.
Currently, the mapping is very simple and does not match the actual app usage. Any changes need to be migrated in the DB as well, therefore needs careful planning.
Usage per Entity
- for
MediaEntry
-
refers to the related
MediaFile
-
for
MediaFile
- refers to the uploaded file (itself)
-
persisted to DB
-
for
Preview
- refers to the converted file
- persisted to DB
- can be different from
media_type
of relatedMediaFile
(!), i.e. an image preview (frame) from a video file.
List of Media Types
image
Any image file (content_type
starts with image
).
audio
Any audio file (content_type
starts with audio
).
video
Any video file (content_type
starts with video
).
document
Any "document" file (content_type
starts with application
)!
This matches many very different kinds of files, e.g. compressed archives, proprietary formats, test strings, PDF documents, etc.
However, PDF is the only type really handled. This should be added, and 'document' removed. Any more special types that will be handled in the future can than simpy be added to the list (+migriating the exisiting values).
other
Any other file that is not matched by one of the definitions above.