Asking for replaygain support

[gorman]

Well, start by looking at the opening post for this discussion. From there I linked to the discussion where I found out that this could indeed work and asked for RG support. I transcode to Vorbis and, if you're a Dsub user, you could too. It should be supported on pretty much all Android devices. Should't it?

[loubat]

I have no desire to transcode to Ogg though. Is it a necessary part of the transcoding process in order to retain the RG tags?

My transcode line looks like this currently:
ffmpeg -i %s -ab %bk -v 0 -f mp3 -

The one you linked to has a lot of other stuff in there:
ffmpeg -v 0 -i %s -f ogg -vn -acodec libvorbis -ar 44100 -aq 3 -ac 2 -map_metadata 0:0 -

So would I just need to keep the "-map_metadata 0:0" part, or what? I haven't had to do much (if any) tinkering with the Subsonic settings in order to get it to do what I want, which admittedly is pretty basic streaming to my phone.

[Reith]

I think I mentioned this earlier, but I didn't have to change anything in the transcoding settings to make ReplayGain work for me. I do flac --> mp3 and it works out of the box as long as the flac files are already scanned with RG.

[gorman]

There you have it, loubat, RG tags are carried across in mp3 too.

[stormwatch]

Thanks for adding support for RG.

I have a collection with various formats including FLAC, MP3, OGG, AAC, etc. I use mp3gain to apply RG to my MP3 files. The script I use writes tags *and* modifies the gain of the audio, this is useful when playing through devices that don't support RG and I'd like to keep things this way. The problem is I *believe* (please confirm) that DSub is reading MP3 tags and applying RG to a file that is already processed with RG by mp3gain. If that is the case I'd like to ask for some reccomendation on a solution.

I've pondering about 2 options:

1) Undo mp3gain but leave RG info in tags, which I can do right now

or

2) Ask for the developer(s) to add a feature: omit RG if the source file is mp3, or even better, omit RG if the audio gain was already modified, altough I am not sure if this is possible to detect somehow. How does mp3gain undo its own RG?

[Reith]

I don't know much about mp3gain since I've never used it, but afaik it's just a specific implementation of ReplayGain and DSub probably doesn't know to look for whatever tags it uses. Obviously I'm not the dev, but I see no reason to support it when standard RG works just fine... does it offer anything special at all?