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Max bitrate Not Honored?

PostPosted: Thu Jun 25, 2009 9:01 pm
by airjrdn
I have the Max bitrate set to 128Kbps, but the auto-refreshing charts on the Status screen show Bitrate at nearly 400. Am I misunderstanding trying to tie the two together, or is it not being transcoded (downsampled) when necessary? Lame.exe exists in "C:\subsonic\transcode\", and was put there during install I assume, as I didn't put it there manually. OS is XP Pro 32bit if that matters.

PostPosted: Fri Jun 26, 2009 3:38 am
by jonathanroz
The max bitrate for the user will limit the quality and overall size of the file transmitted to the user.

When you look at the status page you are actually seeing the bandwidth being taken up by the user. The way Subsonic actually works is it will stream the full song to the user as quickly as yours and the users connection will allow.

When you set the max bitrate to 128 it does transfer the full file faster since it is significantly smaler.

PostPosted: Fri Jun 26, 2009 10:42 am
by airjrdn
That makes sense. Other than measuring the time it takes to transfer a song before and after setting that preference, is there any way to verify the transcoding is occuring?

PostPosted: Fri Jun 26, 2009 5:00 pm
by jonathanroz
Well I havent upgraded to 3.7 yet so this might be fixed, but with 3.6 if you were listening to a song that was transcoded the length of the track will show wrong... so instead of showing 4 minutes for a song it would show 12 minutes.

On linux you can see the process and cpu spike during transcoding. I imagine you might see something similar in windows.

PostPosted: Fri Jun 26, 2009 6:38 pm
by sindre_mehus
jonathanroz wrote:Well I havent upgraded to 3.7 yet so this might be fixed, but with 3.6 if you were listening to a song that was transcoded the length of the track will show wrong... so instead of showing 4 minutes for a song it would show 12 minutes.


That was fixed in 3.7. You can rather look at the log in the "Help" section. There will be some log statements about the transcoding process.

PostPosted: Fri Jun 26, 2009 6:46 pm
by jonathanroz
I forgot about the help section. That is just too easy :)

Yes you will see an entry like this

Code: Select all
Starting transcoder: [/var/subsonic/transcode/lame] [-S] [-h] [-b] [128]