Support and General Use > Audio Playback, Database and Playlists
Replay gain issue
sordup:
OK. I was using ver. 3.8 but have upgraded to 3.9 and am testing again.
Following Buschel's advice I am checking file info for Gain data (and comparing that info with the info on my PC/MediaMonkey) and then comparing playback on Rockbox with Replaygain on and off. It does seem to be working.
What I have noticed with the above process, though, is that there are tracks whose Track/Album gain tags did not transfer over to the device. It is true that there is some transcoding of FLAC and higher bit rate OGG and mp3 files to lower ones going on when my files are moved over from MM in order to economize space on the device. However, although most of the tracks that were transcoded still contain their Gain info, some do not. The only similarity between the unsuccessful ones seems to be with tracks of a low bit rate to begin with.
Is there a way to have Rockbox analyze these questionable tracks again for Gain data once they are on the device?
Buschel:
If I got you right you claim to loose Replaygain data when transcoding a file from A to B (B is of same format, but lower bitrate). Did you check the Replaygain data of those transcoded files in MediaMonkey?
For further analysis you might upload one of those files and the corresponding original somewhere. I could then take a closer look.
sideral:
Maybe 3.9 already fixed your problem? There are a number of gain-related fixes in 3.9, including a correct fallback to track gain in case of missing album gain.
sordup:
--- Quote from: Buschel on July 01, 2011, 01:40:52 PM ---If I got you right you claim to loose Replaygain data when transcoding a file from A to B (B is of same format, but lower bitrate). Did you check the Replaygain data of those transcoded files in MediaMonkey?
For further analysis you might upload one of those files and the corresponding original somewhere. I could then take a closer look.
--- End quote ---
No. Transcoding from A to B, where A is a low bitrate to begin with. B may/may not be different format. Other transcodes (i.e. from higher bitrate and/or changing formats) works fine.
saratoga:
--- Quote from: sordup on July 07, 2011, 01:43:08 PM ---
--- Quote from: Buschel on July 01, 2011, 01:40:52 PM ---If I got you right you claim to loose Replaygain data when transcoding a file from A to B (B is of same format, but lower bitrate). Did you check the Replaygain data of those transcoded files in MediaMonkey?
For further analysis you might upload one of those files and the corresponding original somewhere. I could then take a closer look.
--- End quote ---
No. Transcoding from A to B, where A is a low bitrate to begin with. B may/may not be different format. Other transcodes (i.e. from higher bitrate and/or changing formats) works fine.
--- End quote ---
What about Buschel's main question? Do the transcoded tracks actually have replaygain information? If not, then no surprise Rockbox doesn't find it :) The bitrate part probably doesn't matter too much.
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