The value of these parameters should not be fixed…
... Ffmpeg should be able to do the job on my Mac, and here's what I get without specifying formats or options.
Please let me know if this looks right.
Input #0:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
Stream mapping:
Stream #0:0 -> #0:0 (pcm_s16le (native) -> flac (native))
Output: Audio: flac, 44100 Hz, stereo, s16, 128 kb/s
Metadata:
encoder: Lavf59.27.100
Note: Sampling freq is unchanged but bitrate has gone from 1411 kb/s to 128 kb/s, does this look right to you? ...
Hi Fuzi, cheers for the feedback.
Just to be sure let me first say: don't sweat it. It's no big deal -- posting WAV files is perfectly alright.** You should of course be doing this because you want to, because you think it's fun to find things out, not because someone on the internet (me, in this case) told you so.
Consider also
Greta's tip with XLD. She will have a lot of experience with that particular program, and the fact that she recommends it means XLD is recommendable.
Regarding your question about the (alleged) low bitrate of the ffmpeg conversion result: it may mean nothing. Check the actual bitrate of these FLAC files. Do they really have 128 kb/s? If not, the stated value can probably be ignored.
As an aside: bitrate is not a very good measure because it depends on the degree of compression of the FLAC file. Better to ascertain the bit depth and the sampling rate -- these are constant for any FLAC file and independent of compression.
I'm a Windows and Linux user, so I cannot easily try out pure Mac programs, and thus XLD wasn't an option. I have no experience with ffmpeg and at the moment no time to learn the finer points of using it.
What did I do?
I went to
Xiph's canonical
FLAC tool page and chose the first item of the Mac OS X front-ends, which is fre:ac, the Free Audio Converter.
(I am not trying to sell this program. I did not know it before today. I'll just describe my experience as a first-time user.)
Like XLD, fre:ac is under active development, the latest version came out a week ago or so, and -- that was the important point for me -- is available for all major operating systems.
Website looks professional (in the good sense, not in the let's-see-what-we-can-palm-off-on-you sense), nothing fishy there, the licence is ok, and it has been very easy for me to operate.
-- I decoded a 24-bit, 176-kHz rip from FLAC to WAV with flac.exe.
-- Selected the FLAC Audio Encoder 1.3.3 that comes with the fre:ac installation (not the latest one but fairly recent) in the drop-down menu on the lower right -- which is nothing other than the flac.dll.
-- Converted the WAV files mentioned above to FLAC with fre:ac.
Result: 24-bit, 176-kHz FLAC files containing the original metadata. As required.
_____
** As long as they are in an additional container such as ZIP, RAR and the like. Plain WAV files are vulnerable to undetectable corruption during download.