Am I transcoding flac > mp3? How can I confirm it?

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Am I transcoding flac > mp3? How can I confirm it?

Postby bigman » Tue Apr 29, 2014 1:34 am

edit: clarified title and body a bit

So, I'm trying to set up flac > mp3 transcoding for the web interface. If it plays natively in the web interface (unlike ogg), I may just see if anyone at my work balks at me streaming flac. But, until then, I'd like to at least explore transcoding it to (VBR, if possible) mp3. I recognize that my current setup isn't VBR transcoding, but first things first, I figure...

I've currently got my config set up as (from: viewtopic.php?f=6&t=14322#p62672 )
step1:
Code: Select all
ffmpeg -i %s -f wav -

step2:
Code: Select all
lame -b 192 - -


But, this is what I see when I try to pull down a flac file:
2014-04-28 20_13_42-Subsonic.png


I use dsub on android, and I can watch the file size downloaded and I can tell, based on that, that the flac > ogg transcoding is functioning properly (for example)... But with the web interface, because the file sizes listed are the exact file sizes of the flac file, I'm suspecting that no transcoding is occurring? Additionally, I have the player configured for a max bitrate of 320 (i.e., not "no limit").

I have downloaded the latest ffmpeg and lame files (also, using the links provided in: viewtopic.php?f=6&t=14322#p62672 ), and placed them in the appropriate folder. For kicks, I've also restarted the subsonic server, logged in and back out, and done a number of other seemingly useless things.

I'm also having other transcoding issues, such as an inability to transcode ogg > mp3 using the default method.


Any thoughts?
bigman
 
Posts: 11
Joined: Wed Apr 23, 2014 2:09 pm

Re: Am I transcoding flac > mp3? How can I confirm it?

Postby bigman » Thu May 01, 2014 1:41 pm

So, an update:

It looks like transcoding and/or downsampling is occuring. I started-up WireShark and was able to check the total bytes transferred. Though the web player says "mp3" and "19.2 MB", for example, Wireshark only reported about 5.7 MB transferred. It looks like it's a bug or deficiency of the web player.

I also appeared to encounter an unrelated bug in Shockwave Flash -- it crashes regularly in Firefox, especially when the player attempts to automatically go to the next song. I don't experience this crashing in Chrome.
bigman
 
Posts: 11
Joined: Wed Apr 23, 2014 2:09 pm


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