[FIX] Fix poor AAC streaming performance (Pandora, Slacker, etc) on Froyo

mrcrassic · Jul 27, 2010

When I installed Froyo on my N1, I found that streaming quality over Pandora suffered tremendously; low-quality was unbearable, and high-quality sounded worse than low-quality normally does. The change to StageFright from OpenCore is to blame here, while it improves HTTP streaming, it's AAC decoder doesn't decode LC-AAC streams properly.

To disable it temporarily, use

Code:

adb setprop media.stagefright.enable-player false

and restart any applications actively playing anything. To disable it permanently, pull build.prop from /system and change the value there. When you restart, it should be disabled; use adb getprop to verify.

Of course, the phone needs to be rooted for this to happen, as r/w access to /system is required.

propain4444 · Jul 27, 2010

THANK YOU!!!

I was so completely frustrated by this, as my phone is my primary source of music in my car via Rhapsody, that i had just rolled back to 2.1 yesterday.

I just verified your 'fix' and my sound is now perfect again!

Side note to everyone out there, setprop is a shell command, so you actual command to set the property is:
adb shell setprop media.stagefright.enable-player false

But there's no reason you shouldn't change the property in your build.prop file if you listen to streaming music regularly.

Again, THANK YOU for this fix!!

One other side note: this change also appears to fix the bluetooth "skipping" issue that appeared in 2.2 as well.

Mikey · Jul 27, 2010

HUGE difference for the better

Thank you

Chopes · Jul 28, 2010

cnunez1987 said:
When I installed Froyo on my N1, I found that streaming quality over Pandora suffered tremendously; low-quality was unbearable, and high-quality sounded worse than low-quality normally does. The change to StageFright from OpenCore is to blame here, while it improves HTTP streaming, it's AAC decoder doesn't decode LC-AAC streams properly.

To disable it temporarily, use

Code:

adb setprop media.stagefright.enable-player false

and restart any applications actively playing anything. To disable it permanently, pull build.prop from /system and change the value there. When you restart, it should be disabled; use adb getprop to verify.

Of course, the phone needs to be rooted for this to happen, as r/w access to /system is required.

Thanks for the info man

Just curious though, does anyone know the cause of why this is? Maybe a different decoder would have more success?

homealonedude · Jul 28, 2010

Thanks, sounds much better.

Now I have to remember to change my build.prop nearly everyday when I flash a new rom.

PeRRiiN · Jul 28, 2010

I'm rooted and pulled the build.prop file, but what program do I need to open the build.prop file and edit it?

Manacit · Jul 28, 2010

PeRRiiN said:
I'm rooted and pulled the build.prop file, but what program do I need to open the build.prop file and edit it?

any text editor, notepad included, will work

PeRRiiN · Jul 28, 2010

Manacit said:
any text editor, notepad included, will work

Thank you, I'll try it out.

gofizzle · Jul 28, 2010

Thanks so much for the fix. Now I can listen to my tunes without some of the lyrics sounding like a Chimpmunks sing-a-long!

venelar · Jul 28, 2010

Thanks for this! Having some trouble pulling it off though

I'm new to android.

I have root/unlocked, and have successfully used the adb pull command to pull the build.prop file. I've got the file edited, but cannot seem to get it to push back to the device.

Here is my problem if anyone would be willing to point me to the correct method.

PeRRiiN · Jul 28, 2010

venelar said:
Thanks for this! Having some trouble pulling it off though I'm new to android.

I have root/unlocked, and have successfully used the adb pull command to pull the build.prop file. I've got the file edited, but cannot seem to get it to push back to the device.

I believe you have to type this command before you push it

adb remount

stuff · Jul 28, 2010

I used pandora all day today, and I never heard anything wrong with it. :S

stealthopts17 · Jul 28, 2010

I can confirm that this works! Thanks!

I think it would be a good idea to include these instructions in the OP for those who don't know the commands.

Here's what I did. For those following these steps, the file locations on your computer may be slightly different.

On Windows:
1. Open Command Prompt
2. Type cd [location of tools folder in android sdk] Example cd C:\Documents and Settings\Administrator\My Documents\Nexus One\android-sdk-windows\tools
3. Type adb pull /system/build.prop c:\build.prop [This will place build.prop in your C Drive]
4. Using any text editor, open the file, make the necessary changes, then save.
5. Type adb remount
6. Type adb push c:\build.prop /system/build.prop
7. Type adb reboot
8. To verify that it is disabled, type adb shell getprop

After a few scrolls, you will see the following:
[media.stagefright.enable-player]: [false]

This means that everything was done correctly.

I'm pretty n00bish at this stuff. If something doesn't look right, let me know.

Thanks again for the fix!

craigacgomez · Jul 28, 2010

venelar said:
Thanks for this! Having some trouble pulling it off though I'm new to android.

I have root/unlocked, and have successfully used the adb pull command to pull the build.prop file. I've got the file edited, but cannot seem to get it to push back to the device.

Here is my problem if anyone would be willing to point me to the correct method.

Which ROM are you using? And which boot image are you using. Just root access is not enough. The ro.secure value in default.prop should be set to 0 (zero) to allow remount with read-write permissions. Check the value of ro.secure in /default.prop. If it is 1 (one), you need to flash a new boot.img which has the value set as 0 (zero)

mixer5911 · Jul 28, 2010

stealthopts17 said:
I can confirm that this works! Thanks!

I think it would be a good idea to include these instructions in the OP for those who don't know the commands.

Here's what I did. For those following these steps, the file locations on your computer may be slightly different.

On Windows:
1. Open Command Prompt
2. Type cd [location of tools folder in android sdk] Example cd C:\Documents and Settings\Administrator\My Documents\Nexus One\android-sdk-windows\tools
3. Type adb pull /system/build.prop c:\build.prop [This will place build.prop in your C Drive]
4. Using any text editor, open the file, make the necessary changes, then save.
5. Type adb remount
6. Type adb push c:\build.prop /system/build.prop
7. Type adb reboot
8. To verify that it is disabled, type adb shell getprop

After a few scrolls, you will see the following:
[media.stagefright.enable-player]: [false]

This means that everything was done correctly.

I'm pretty n00bish at this stuff. If something doesn't look right, let me know.

Thanks again for the fix!

awesome! although i have to say i don't really see (hear) a difference using pandora on cm6rc2

stealthopts17 · Jul 28, 2010

mixer5911 said:
awesome! although i have to say i don't really see (hear) a difference using pandora on cm6rc2

i've tried every froyo rom available, and sound quality in my car was horrible on all of them. this fix definitely makes listening to pandora enjoyable again.

whoisthedrizzle · Jul 28, 2010

thanks. completely stopped using pandora because it started to sound like I was trapped in tin can; and too lazy to swap out files constantly

voodoo55 · Jul 28, 2010

Super gratefull for this! Worked like a charm.

Sent from my PC36100 using XDA App

mempf · Jul 28, 2010

Thanks so much.

Sounds so much better now.

What real life consequences does making this change this have? The OP mentions HTTP streaming, can you elaborate?

Thanks!

arich · Jul 28, 2010

Noob question: canine just access the build.prop file with root explorer and edit it that way?

[FIX] Fix poor AAC streaming performance (Pandora, Slacker, etc) on Froyo

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