Quote from: dancrocker on 18 January, 2010, 05:47:58 PMA question for you and others:When you say your files play gaplessly, are you saying that the transition between tracks is perfect and flawless? If it isn't, then this is what I'm encountering. If it is, then this is what I'm trying to achieve.In my case, my LAME mp3 files have a "perfect and flawless" (your words) transition between tracks 99.9% of the time. And I've actually tried hard to detect a glitch in transition, with headphones, etc. I will say that once in a while, I'll get a glitch when transitioning, usually a function of transitioning between a 30 minute song (e.g., grateful dead, dark star) and the following song. But I can go back and play song again and with the same exact songs, the transition is perfect. Then again, once in a while, I get a glitch in the middle of a song. These I chalk up to the ipod reloading its cache or something odd. It is a computer after all and is reading data from a harddrive.
A question for you and others:When you say your files play gaplessly, are you saying that the transition between tracks is perfect and flawless? If it isn't, then this is what I'm encountering. If it is, then this is what I'm trying to achieve.
On one of the tracks which has problems:Re-Rip to mp3 (all in dBpoweramp)Rip to WaveConvert (again with dBpoweramp) that mp3 track to wave (so you have 2 wave files - original CD wave and decoded mp3 >> wave), next load them into your favourite audio editor (audacity if you have none) and compare the start and end of the track, as dBpoweramp would decode the mp3 file gapless, there should be no major distinctions in the wave form (taking into account one is mp3).
Quote from: spoon on 18 January, 2010, 11:56:09 AMOn one of the tracks which has problems:Re-Rip to mp3 (all in dBpoweramp)Rip to WaveConvert (again with dBpoweramp) that mp3 track to wave (so you have 2 wave files - original CD wave and decoded mp3 >> wave), next load them into your favourite audio editor (audacity if you have none) and compare the start and end of the track, as dBpoweramp would decode the mp3 file gapless, there should be no major distinctions in the wave form (taking into account one is mp3).OK, I did this experiment. I created the two wavs as you suggested and opened them with garageband. Both waveforms look pretty much identical to me; they end exactly the same way. As a sanity check, I synced the wavs created from the MP3s to my iPod and they played perfectly. This is further evidence that the gapless info in the MP3s is right but that the iPod is not doing the right thing with the MP3s. Not only does foobar2000 behave but dbpoweramp interprets the info properly as well.If others are not having this problem, there must be some difference between the MP3s I'm creating and the ones others are. Or, I suppose there could be something special about my iPod. As I said in my other response, perhaps this has nothing to do with gapless support (e.g. the metadata that deals with the MP3 encoder artifacts). I'm creating 320Kbps CBR files using the "high quality" encoding option in dbpoweramp. If you're having "flawless" track transitions, could you tell me what encoder settings you're using?So, would it be a violation of copyright laws for me to send someone a couple of MP3s to try on their iPod? If not, I'd like to see what happens.
Well, just to try to further help you, I have tried encoding a couple more albums with dBpowerAMP and Lame 3.98.2. I used the CBR 320kbps setting, -V 2, and -V 0 all at normal quality. FYI - increasing the quality setting in dBpowerAMP (with Lame 3.98 and above) doesn't do anything. It changes the -q values that Lame encodes with. However, with Lame 3.98, I believe that -q3 (normal) and -q0 ("high quality") produce the same files. I say believe as I do not know the exact -q value numbers. I do know that going from normal to high quality doesn't change anything.Have you tried restoring the iPod?
Thanks. Out of curiosity, which CDs did you encode? Did they have gapless tracks? And, were you able to play them without glitches between tracks?
The --nogap option is really old and pretty much useless these days. They were talking about its demise nearly 6 years ago:http://www.hydrogenaudio.org/forums/index....showtopic=16020
Quote from: 2Bdecided on 18 January, 2010, 04:39:49 AMI don't have an iPod, but are you saying that gapless = not quite gapless?!Not at all. However, there are some instances when the transition from one song to the next is not smooth. I have heard this on my iPod a couple of times with Nero AAC files. There is a slight (less than one second) pause or click that can be heard when going from one song to another. So iPods are gapless but there are some instances where it might not be perfect (as with any technology). With the other person that I helped, we were able to download the sample and put it in an application. The little click/gap was actually around 0.3 seconds long. It wasn't anything to get all up in arms over.So all I am saying is that gapless playback may have some instances (in my experience, these are few and far between if I even notice them at all) where it isn't truly gapless. It would be nice to determine if the OP is experiencing behavior like this or if there is an actual problem.
I don't have an iPod, but are you saying that gapless = not quite gapless?!
I can try without the nogap option. I actually didn't realize it wasn't recommended. So, do I need to do anything special to get gapless files?
Less than 1 second? 0.3 seconds? Just what do you think "gapless" means? AFAIK the gap in mp3 that lame nogap addresses is on the order of 15 milliseconds.
My experience with hard drive iPods is that gapless playback is not always 100% accurate. I am not sure where this comes from but my 5G 60GB iPod and 120GB iPod classic have both performed like this. About one song in a few thousand will not transition correctly.
The option is obsolete in the sense that it is on by default now.
OK... looks like the issue is that the mechanical drive may not fetch the new file in the time allowed for by the firmware. Maybe the drive is too fragmented.
>dbPowerAmp or the free version? The free version uses BLADENo it does not...
There was no gapless scanning; only something about "detmining song volume".
I've never seen "determining song volume". Do you have somesort of gain feature turned on? Maybe you can try turning that off.