LAME + Dibrom's presets/switches + remarks
LAME + Dibrom's presets/switches + remarks
Jan 5 2002, 05:19
Joined: 20-December 01
Member No.: 693
ok...i have read and read and read trying to learn the technical details of the "--alt-presets" but i still have some questions:
1. what are the current switches in each of the presets [i.e. extreme, standard, and their "fast" counterparts].
2. could someone explain what the non-obvious switches do for those that aren't involved in programming/developing LAME
i think it would be a good idea, and probably save some newbie questions [not unlike this post, *tears*] to sticky all the information conceivably possible in regards to the "--alt-presets" and why these switches are used. i don't desire "the history of the presets" just what they do in the current/recommended compile. also, differences in the "fast" and "non-fast" presets [i.e fast standard vs standard] would be GREATLY appreciated [why? because, well...they seem pretty much the same to me audibly]
3. and could somebody explain to me the reason for writing or not writing the Xing Header?
4. what is a good program for analysing mp3's [i.e. to see the differences between encoding switches and the quality they produce within the same sample] that is exhaustive...
5. can anyone REALLY hear a difference between a CD track and their LAME "alt preset standard/extreme" counterpart?
ok...now for some remarks
1. this forum is awesome, i am learning just a phenomenal amount of information in minutes/hours/etc. thanks for this resource and don't let the "powers that be" get you down...[i.e. the official developers of LAME]
2. if LAME is open-source, and their are quite alot of people creating compiles, why is there still an "official" version...why not just release versions like "3.90dm1.1" and "3.90mitiok1.1" etc...this would clear up alot of confusion/egos/etc. and allow those that use certain aspects of LAME [i.e. dibrom's presets in dibrom's compiles] for those that desire them without all this feminine, drama...[damn flaccid ninnies]
3. to dibrom [and other devs w/ PM]: don't let this opposition worry you. anyone who is even *slightly* knowledgeable in regards to encoding/LAME/mp3 would use this site as their primary resource for EVERYTHING [compiles/information/forum]...i am sure that the opposition derives from lowly emotions, "if you know what i mean"
4. in no way shape or form do i think that releasing 3.90.2 was in bad taste, disrespectful, unbecoming, etc. and all who think so have some sort of issues...as far as i am concerned compiles from this forum ARE the official versions and i use and inform others only of this site.
5. man, 700+ posts in a couple months...geesh Dibrom...why do i have such a comfortable feeling that this post will be responded to quickly...thanx, again...
i don't really expect a complete response to all of this...it was more to just post my questions/comments. but responses to the questions would be greatly appreciated
and just a side note, it sucks having to "un-learn" everything from r3mix.net...man does that guy has issues...he seems like some sort of deluded fool after coming to this site, oh well...
issues, issues, issues, issues, and more issues...geesh
[btw...i have been reading these forums for about a month now, but this is my first post and i just registered not too long ago...i hope my questions seem more than retarded...just slightly more...]
RareWares/Debian :: http://www.rarewares.org/debian.html
Jan 9 2002, 22:45
Joined: 26-August 02
From: Nottingham, UK
Member No.: 1
***EDIT : the information in this post is outdated : more problem samples have been found that are solved with -Z, that was thus included in the standard preset in Lame 3.90.3
See http://www.hydrogenaudio.org/forums/index....7783#entry77436 ***
Originally posted by xmixahlx regarding experimental switches:
i ask this because on many of the forums which i have visited, there are countless many who swear by thier ridiculously exhaustive parameters in the commandline, and i have seen people swearing by their "--alt-preset extreme -X -Z" or whatever but it seemed to me that if these switches were so good, they would be included in the original parameters of the alt-presets
JohnV about covered the rest, but I'll just add a small comment here about this issue. First, the --alt-preset switches have been tuned to a level to where -Z is no longer needed. In every single case where it has caused issues in the past, the new adaptive mode takes care of the problem. This includes clips like fatboy, spahm, them, etc... quite a lot. There may be one possible exception with this dog whistle sound clip, but I haven't listened to it yet so I can't say for sure. It may be easily fixed if there is an issue.. but realize this is only one sample.. not a handful... and one could say that the clips which have proven to be the hardest to encode are already addressed (fatboy, etc).
If you see people using switches like --alt-preset -Xx -Z, then they don't know what they are doing. I can promise you this. The possible exception is if they are LAME developers, but even then I don't know any of the other developers who are quite familiar with how my presets are tuned to work. Changing the -X mode is a very bad idea especially.. and by specifying -Z you may end up degrading quality in cases as well. As I've said before, experimental switches do not work the same way with the --alt-presets as they do with other settings and unless the person has some inside knowledge of LAME or understands the source code and what the --alt-preset modifications are used for (doubtful unless they have talked to me directly and asked me why I made each specific change) they shouldn't be using or recommending the use of other experimental switches with these presets.
In the past there have been many cases where people just use switches and have really no concept of what they do.. now more than ever, seeing the type of situation you mentioned really shows this to be the case.
Another thing to be aware of though is when the posts you speak of were made. My more advanced modifications to the presets has only come about fairly recently so it could be the posts that you are seeing are simply out of date and that at one point may have had some merit, but due to changes in the code, are no longer meaningful.
This post has been edited by Pio2001: May 22 2003, 21:54
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