Issues with music playback on iPhone 4

[foodpoison]

Really starting to bug me now. Basically, iTunes plays the music fine, so I know it's not an issue with the music files. I created a playlist on iTunes to sync with my iPhone, and upon syncing it, all seems to have gone well. But almost every song 'jumps' - playback is jittery, choppy, and in some songs skips whole sections. I wish I could show you an example, but I'm not sure how I'd go about it :s It's irritating as hell, does anybody have any ideas as to what is going on? I've looked on the net, to no avail, and people on the apple forums with similar issues to me have had no replies to their thread

 

[arad85]

A long shot. When I bought my mp3 player, I had weird stuff like that happen. Turns out the data wasn't being copied correctly across the USB port and was corrupt. I even sent one player back as I thought it was the player. To debug, I used teracopy (I now use it as my default copy handler) as that has the ability to checksum the original and copy to see if they are the same.

Is there any way of putting the iPhone into a mode such that it is like a USB disk and you can copy files to it? If so, and you're using Windows, you can use Teracopy to see if that's what's causing the problem.

 

[foodpoison]

I'll be able to see when I get back to my computer tomorrow. I'll give it a go. Reckon you could explain what you mean by 'copy handler' and 'checksum'? I'm not particularly well versed haha.

 

[arad85]

I'll be able to see when I get back to my computer tomorrow. I'll give it a go. Reckon you could explain what you mean by 'copy handler' and 'checksum'? I'm not particularly well versed haha.

checksum means when you read the file you do something like add all the values (the algorithm used is different than this as it is more fault tolerant, but it gives you an idea).

for each byte
checksum = checksum+byte

At the end of the file, you have a value that depends on the exact value of the bytes in the file. Easy to compare if the file is EXACTLY the same.

Copy handler.. when you copy a file from one place to another, some program reads the bytes from the source and writes them to the destination. In windows, you can change this program to something different. It's the program that handles copies... so is the....

 

[lawrenceots]

I've noticed this on my 4 - it's lost that lovely fluidity it ha before the iOS update. It's also messing up the albums artwork too, despite loads of restoring and resetting etc. think it's the new update really.

 

[neil_g]

I had a similar thing with my iPod a while back when it was running low on space, only way I found to fix was restore and resync from scratch

 

[foodpoison]

checksum means when you read the file you do something like add all the values (the algorithm used is different than this as it is more fault tolerant, but it gives you an idea).

for each byte
checksum = checksum+byte

At the end of the file, you have a value that depends on the exact value of the bytes in the file. Easy to compare if the file is EXACTLY the same.

Copy handler.. when you copy a file from one place to another, some program reads the bytes from the source and writes them to the destination. In windows, you can change this program to something different. It's the program that handles copies... so is the....

Thanks. Copy handler - handles copies. easy when you know how haha.

I've noticed this on my 4 - it's lost that lovely fluidity it ha before the iOS update. It's also messing up the albums artwork too, despite loads of restoring and resetting etc. think it's the new update really.

Very weird. It was broken before the update, and I've restored and resyned many times and it's still not working. Might try creating a new playlist and see if that helps.

I had a similar thing with my iPod a while back when it was running low on space, only way I found to fix was restore and resync from scratch

I've read things saying that the iphone might need defragging, which is odd.

 

[foodpoison]

This is really bugging me now. I've tried disabling Zonealarm (read someone who it had happened to on the Apple forums, said it fixed it).

Tried restoring my iPhone.

Tried running iTunes in compatibility mode.

Tried deleting my iTunes library, re-loading all my music into iTunes, resyncing.

Tried defragging iPhone.

I'm currently converting all the songs to AAC format for resyncing. Who knows if it will work or not. I'm fairly sure it's a hardware issue, and not an issue with my iPhone, but it's extremely frustrating.