Ticket #1649 (closed enhancement: fixed)
add a volumedetect audio filter
| Reported by: | dericed | Owned by: | |
|---|---|---|---|
| Priority: | wish | Component: | avfilter |
| Version: | git-master | Keywords: | volume volumedetect |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | yes | |
| Analyzed by developer: | yes |
Description
There is a nice volume audio filter that enables the audio volume to be raised or lowered according to a fraction or db value. I often need to create media files where the audio volume is scaled to a specified db value. Right now to do this I have to pipe from ffmpeg to normalize (to get the volume expressed in db), then do the math to determine the difference between the volume I have and the volume I want, and then use the volume filter in ffmpeg to make that adjustment.
I suggest that ffmpeg add a volumedetect filter to assess the volume of an audio stream (similar to how normalize does) as it would be nice to do this process in one tool.
I think the combination of cropdetect and crop is similar to this request, since cropdetect can be used on a first pass to determine an appropriate crop and then the returned value can be used in the crop filter of a second pass. Doing something similar with a volumedetect filter then the existing volume filter would be very useful.
Change History
comment:1 Changed 9 months ago by Cigaes
- Keywords volume added; avfilter,volume removed
- Status changed from new to open
- Version changed from unspecified to git-master
- Component changed from undetermined to avfilter
comment:3 Changed 9 months ago by saste
- Analyzed by developer set
- Keywords volumedetect added
- Status changed from open to closed
- Resolution set to fixed
- Reproduced by developer set
Shoulld be fixed by the volumedetect filter, added in:
commit 5980e57cf9a08ca284bc1b5ffba2363f9eff8ca8
Author: Nicolas George <nicolas.george@normalesup.org>
Date: Sat Aug 18 13:49:47 2012 +0200
lavfi: add volumedetect filter.
