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Scald is too heavy, isn't it?
Scald is modular, thus it contains many sub modules. If you don't want a feature, just disable a sub module and replace it with your drop in.
Look at the size (as of Oct 1st 2013):
|Scald||150 KB||Yes||Included: YouTube, Vimeo, Dailymotion, Audio/ID3, Flash support|
|Media 1.x||177 KB||Yes|
|File Entity 2.x + Media 2.x||185 KB||Yes|
So, no, it is not at all heavy as you may think.
I think Media is the de-facto standard solution
A solution used by more than 100 K website can't be wrong. But we believe we need another solution because Media's approach is not extensible. Media implies a media is a file, Scald does not. Scald believes file is just a special case for a media entity. Those both approaches are not compatible and we can't fix Media. The Scald team thought carefully about many possibility before deciding to port Scald to Drupal 7 (to be based on File Entity or Scald's own entity, which is known as "atom"). Amongst reasons why Media Atom entity is not File entity:
- We don't want that every managed file is a Media Atom entity.
- Multiple Media Atom entities (with different title, caption...) can reference to the same File entity (or any resource).
- One Media Atom entity can have multiple revisions, each reference to a different File entity (or any resource).
- Media Atom may not always have a filesize or mimetype like a traditional file. A "transcoded" Media Atom may have. Each transcoded Media Atom may be a file.
So, while it is still good for simple usage, for more advanced usage we believe Scald is a better match. Scald also has many features that Media does not, like great WYSIWYG integration, friendly library, advanced/granular permission system...
Scald has much smaller usage because a lot of people still think Media is the standard solution, or they simply even don't know of Scald.
PS: for Drupal 8, after the Media sprint at Drupalcon Prague 2013, a new module Media Entity was born with a similar approach as Scald. Because Drupal 8 is a big change, people start from scratch instead of porting a Drupal 7 module.
Scald may disappear one day
While it does not have many usage (now), many big sites use Scald: Radio France (national public radio), ARTE (Franco-German TV network), Le Figaro (the biggest media in France), Africa 24 (TV network)... and a lot of other media, government or private websites. You can learn more about it on Scald representations at https://drupal.org/node/2101885 or this slide (Drupalcon Prague 2013).
The Scald issue queue is quite active. Therefore this module won't go anywhere in the foreseeable future. Let's use it!
How about performance?
Scald is optimized for performance and uses its own caching system that works well with other caching layer (core filter cache etc.). As of today (Oct 2013), there are:
- 800,000 atoms on franceinfo.fr
- 300,000 atoms on franceinter.fr
(images, videos and audios)
Because Scald works at entity and field level, the render and text format filter can be cached without bypassing the access control level. It is more D8-friendly than most of other media-related modules.
If a module works at the filter system, it either bypass the access control check for embedded entities, or bypass the filter caching system. Yet, the filter caching system is really useful and essential for big media sites: in a page with a node + 50 comments without cache, it might takes seconds for a HTML corrector filter (like HTML Purifier or HtmLawed...) to filter the texts in every page view.
View mode, context - What is the difference between them?
Nothing. They are the same.
The "display context" concept was introduce by Scald in Drupal 6 because at that time there was:
- No entity: so there was no "view mode" for entity
- No CCK field for entity: so contexts were managed in a separate page, different from the Field UI managing page.
The port of Scald to Drupal 7 still left "context settings" and "view modes settings" at two different places, but we are planning to unify them. If you are familiar to File Entity, then they are "Manage file display" and "Manage display" tabs.
Besides, Scald atoms mean entities. The term "atom" was invented because "entity" didn't exist at that time.
OK, I'm convinced. How to test Scald?
You can set up your own website and test Scald in less than 60 seconds using the Scald Galaxy distribution. It is bundled with a lot of modules, preconfigured to demonstrate Scald features.