I am getting ready to re-convert my library of FLAC files to MP3. Previously I had been using 3.90.3. I am wanting to know if there will be a lame_profile written by 3.97 at some point, like there had been in 3.90.3.

In foobar2000, using the "Show File Info (special)" component, I can obtain this information:

lame_version = LAME3.90
lame_profile = aps
lame_profile_index = 3
enc_delay = 576
enc_padding = 1152
mp3_accurate_length = yes
bitrate = 195
codec = MP3
channels = 2
samplerate = 44100
extrainfo = VBR
mp3_stereo_mode = joint stereo
--------------------
12333888 samples @ 44100Hz
(mod 588 = 0)

I tested out a conversion using the 3.97 beta using the new -Vx switches. If I pull out the same technical info in foobar2000, the "lame_profile" is blank and the "lame_profile_index" is 0, as shown below: (this was the same song as above, but using -V4 --vbr-new)

lame_version = LAME3.97
lame_profile =
lame_profile_index = 0
enc_delay = 576
enc_padding = 1152
mp3_accurate_length = yes
bitrate = 128
codec = MP3
channels = 2
samplerate = 44100
extrainfo = VBR
mp3_stereo_mode = joint stereo
--------------------
12333888 samples @ 44100Hz
(mod 588 = 0)

It would be useful to have the -Vx profiles added into the file, as it would help to separate home use files (-V1, -V2, -V3) from portable files (-V4, -V5, -V6).

Just wanted to see if this was going to be included. Thanks!

Any thoughts from the devs?

That's not a problem with LAME but with the modified foo_input_std.dll that you are using. Obviously it has not been updated to recognize the new LAME versions.

Well, -V2 replaced (and techically is and has been for some time) --a-p s. Maybe something has changed in profile labelling since then.

If one was to encode a file with LAME, first using --a-p s then -V2, would there be any differences? I know the audio data would be identical but does LAME write encoder settings anywhere and possibly store these two as different settings?

Not in the LAME header at least, just stores a 2-byte value indicating a VBR setting index (can't remember what -V2 is offhand, but its the same index as aps). The actual words "alt-preset standard" or even "V2" are never stored in the mp3, afaik.

I see. Thanks for replying!