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#1 Posted : Monday, January 10, 2011 6:32:15 PM(UTC)


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I trial leadtools cpp convert demo,

I selected ISO as Target, select Lead AAC Encoder as Audio codec(set Object type =LC,  stream format =RAW, Mpeg version =mpeg4, block type = normal, output channel = stereo, output sample rate =48000, bitrate = 128kbps),  then I get a AAC audio file, I transfer this AAC audio to my ipod touch4 to test, I found, it can play well on iTunes, but can't play on iPod touch4, I tried the .m4a and .aac file extension name, both failed on iPod touch4.

Then I selected ISO as target, select LEAD AAC Encoder as Audio codec(same setting as above), select Lead H.264 Encoder as video codec(main profile), then I get a H.264 mp4 file, then I transfer this mp4 file to my ipod touch4 to test, I found, it can play on iPod touch4, but no sound, just have right picture, no sound.

I used iTunes to convert same file to aac audio file, it can play fine on iTouch4, so I think there is something wrong with Lead AAC Encoder, I write this problem here, need help, if Lead AAC Encoder can't convert aac audio for iTouch4, I think it's so bad, because iPod and iTouch is most popular, and have many users, we must support iPod.


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#2 Posted : Tuesday, January 11, 2011 5:48:27 AM(UTC)

Adam Boulad  

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We have a demo that converts to iPod-compatible format. The demo is called 'Convert to Mobile' and the source code is available in the [LEADTOOLS 17 Install folder]\Examples\Ltmm folder.

Please check the demo and check the AAC encoder settings (and other settings used) for the iPod (H264+AAC) option.
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