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UBL文件烧写问题,dm368平台 encode编码



你好,是这样,我在dm368上移植dvsdk4.02,如果我移植ubl文件UBL_DM36x.bin,u-boot-2010.12,及linux-2.6.32.17内核在dm368上,运行encode编码264文件编码720p 60Hz,运行输出信息如下:

ARM Load: 26% Video fps: 30 fps Video bit rate: 1074kbps Sound bit rate: 0 kbp

s Time: 00:00:04 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolutio

n: 1280x720 Sound Codec: N/A Sampling Freq: N/A

ARM Load: 28% Video fps: 30 fps Video bit rate: 1026kbps Sound bit rate: 0 kbp

s Time: 00:00:04 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolutio

n: 1280x720 Sound Codec: N/A Sampling Freq: N/A

...........

如果我移植ubl文件UBL_DM36x_NAND_ARM432_DDR340_OSC24.bin,u-boot-2010.12,及linux-2.6.32.17内核在dm368上,运行encode编码264文件编码720p 60Hz,运行输出信息如下:

ARM Load: 20% Video fps: 22 fps Video bit rate: 980kbps Sound bit rate: 0 kbp

s Time: 00:00:04 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolutio

n: 1280x720 Sound Codec: N/A Sampling Freq: N/A

ARM Load: 19% Video fps: 22 fps Video bit rate: 760kbps Sound bit rate: 0 kbp

s Time: 00:00:04 Demo: Encode Display: 720P 60Hz Video Codec: H.264 HP Resolutio

n: 1280x720 Sound Codec: N/A Sampling Freq: N/A

.............

以上除了烧写ubl文件的不同以外,其它的都一样,但encode编码出的文件确差别较大,烧写了UBL_DM36x.bin这个文件,编码出的264文件可以正常播放;而烧写了UBL_DM36x_NAND_ARM432_DDR340_OSC24.bin文件,编码后播放该264文件不正常,有丢帧,视频播放也快。请问这是什么原因呢?是时钟的区别还是有其它问题?谢谢.....