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Bug 741371 - Replace the 10-band and 3-band equalizer audio filters by a custom curve UI controlling the GStreamer "N Band Equalizer" plugin
Replace the 10-band and 3-band equalizer audio filters by a custom curve UI c...
Status: RESOLVED OBSOLETE
Product: pitivi
Classification: Other
Component: Effects
Git
Other GNU Hurd
: Low enhancement
: Git
Assigned To: Pitivi maintainers
Pitivi maintainers
Depends on: 741370
Blocks:
 
 
Reported: 2014-12-11 00:59 UTC by Jean-François Fortin Tam
Modified: 2015-10-20 13:11 UTC
See Also:
GNOME target: ---
GNOME version: ---



Description Jean-François Fortin Tam 2014-12-11 00:59:54 UTC
So while the 10-band and 3-band audio equalizer filters don't work (bug #741368), there also seems to be an audio effect available called "N Band Equalizer". The thing is, if you look at it in Pitivi the only UI you get is a slider for the "num-bands" property.

The problem is that this makes little sense if you can't control the loudness of each frequency band. Looking at http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-equalizer-nbands.html this is not set through a property.

So you'd need to do two things:
* Some backend stuff to get the band values to work (see above), which would involve GES.
* Implement the infrastructure for easily creating custom effect UIs (bug #741370)

If we had a custom UI for this effect, where users could control a "histogram" of many sliders (probably laid out in vertical orientations instead of horizontal), the UI could have a combobox offering some presets for the "Precision": [3 bands, 10 bands, 16 bands, 32 bands, 64 bands]. If so, then we could just have one standard UI/effect and blacklist the 3-band and 10-band filters.
Comment 1 Thibault Saunier 2015-10-20 13:11:54 UTC
This bug has been migrated to https://phabricator.freedesktop.org/T3264.

Please use the Phabricator interface to report further bugs by creating a task and associating it with Project: Pitivi.

See http://wiki.pitivi.org/wiki/Bug_reporting for details.