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17th July 2016, 19:42 | #1381 | Link |
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Randy31416, this is because the clean_file_name() function is applied to clean up the file name, before the final file extension is appended. And dots (.) at the end of the file name are forbidden, so they are removed.
I have changed the logic now, so that the clean up function gets applied at a slightly later point: https://sourceforge.net/projects/mul...6.exe/download
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20th August 2016, 18:52 | #1383 | Link | |
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LameXP v4.14 Beta-4
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11th September 2016, 16:23 | #1384 | Link | |
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LameXP v4.14 Beta-5
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3rd October 2016, 13:55 | #1385 | Link |
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The QAAC Add-in has been updated to QAAC v2.61:
LameXP.qaac-addin.2016-10-03.zip
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3rd October 2016, 20:19 | #1386 | Link | |
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LameXP v4.14 Beta-7
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16th October 2016, 16:56 | #1387 | Link | |
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LameXP v4.14 RC-1
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21st October 2016, 21:05 | #1388 | Link | |
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LameXP v4.14 RC-2
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22nd October 2016, 18:35 | #1389 | Link |
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Looking good, but if you're after feedback on 4.14RC2, I just have a couple:
During install, it wants to install to folder 4.11 and won't let me change path. When encoding mp3, even when I override the samplerate and enforce 44.1KHz, it downgrades to 32KHz etc, at anything above VBR compression level 6. That's it, so far! Do you need screenshots or is that OK? Thanks for a great app! |
22nd October 2016, 19:33 | #1390 | Link | ||
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Quote:
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The sampling rate determines the highest frequency that can be retained (cf. Nyquist–Shannon sampling theorem). So, by reducing the sampling rate from 44.1 kHz to 32 kHz, you are effectively low-pass filtering the audio. In other words, the highest frequencies are discarded before the actual encoding. At a sampling frequency of 44.1 kHz the highest audio frequency that can be retained (without aliasing) is 22.05 kHz; at a sampling frequency of 32 kHz, the highest audio frequency that can be retained is 16 kHz. Low-pass filtering the audio makes a lot of sense at very low bitrates (or the lowest VBR quality levels), because loosing the highest frequencies is way less disturbing than the compression artifacts that arise otherwise. Note: It's possible to "force" LAME to encode at the original sampling rate, by explicitly specifying the "--resample" option with the original sampling rate. But you almost always do not want this!
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22nd October 2016, 19:52 | #1391 | Link | |
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Many thanks for the explanation:
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Perfect, thank you. |
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22nd October 2016, 21:16 | #1392 | Link | |
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Quote:
(More sampling rates – 16 kHz, 22.05 kHz and 24 kHz – have been added to MP3 with the MPEG-2 standard in 1995)
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25th October 2016, 11:03 | #1393 | Link |
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in the latest version (RC2) it seems that opus isn't working properly. if i encode with the same setting as before (VBR 16kbps; complexity 10; framesize 60) i get valid opus files with correct filesize, but when played back it's just extremely noisy, which sounds like compressed at 1kbps
anyways, keep up the good work! Last edited by RieGo; 25th October 2016 at 11:19. |
26th October 2016, 22:07 | #1394 | Link | |
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Interestingly, at ~24 kbps it came out "okay". Of course, the ~24 kbps version didn't sound very good either. But considering that it's only ~24 kbps Opus still performed pretty well at that rate. Nothing like the ~16 kbps result. I'm not sure whether the ~16 kbps result is a bug in latest Opus or just what you have to expect at that ultra-low rate. If you got better result before, with what Opus version was that?
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27th October 2016, 09:34 | #1395 | Link | |
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if you say 24kbps came out okay for you, it may be just a problem on my side. i'll try to reinstall LameXP and check. update: same problem after reinstalling and removing settings. i uploaded 2 samples, so you know what i mean: 03_opusenc.opus 03_RC2.opus i also tried encoding at 24kbps and 128kbps: 24kbps has the same weird artifacts, but not as present as with lower bitrate 128kbps sounds just fine maybe it's really just a bug in the latest Opus, which effects only lowest bitrates btw: i have seen that opus files generated by LameXP are always 1kbps lower than set. so i encoded my sample at 15kbps with opusenc Last edited by RieGo; 27th October 2016 at 10:02. |
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27th October 2016, 21:35 | #1396 | Link | |||
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Will try building latest version soon... (not this weekend though) Quote:
Your particular audio file may, very well, come out at a somewhat higher or a somewhat lower average bitrate! If you really whish to hit a specific average bitrate, then you have to add the "--cvbr" option, aka "constrained variable bitrate encoding". Or even use the "--hard-cbr" option.
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30th October 2016, 20:22 | #1397 | Link |
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RieGo, can you please try again with the latest LameXP build?
https://sourceforge.net/projects/lam...4.exe/download (After some testing, it appears that the "noisy" output occurs when SSE2 or AVX compiler-optimizations are enabled for the Opus library, so I keep them disabled for now. The recent fixes in Opus code seem unrelated)
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30th October 2016, 22:39 | #1399 | Link | |
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Quote:
https://github.com/lordmulder/mediai...eleases/latest
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31st October 2016, 09:50 | #1400 | Link | |
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Tags |
aac, aotuv, flac, lame, lamexp, mp3, mp4, ogg, oggenc, opus, vorbis |
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