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Wiki > Main > CodecTesting (r1)

Codec Optimization Testing

Explination

This page is meant to gather the result of the test_codec viewer from all different codecs on all different platforms. Since the viewer measures results in percent realtime, it should not make a difference how long the song is. You will need to compile your own build of rockbox in order to compile the test_codec viewer. Please test with your DAP and post the results in the same format as the first one.

Results

Iriver H10

Codec Settings Result File size
WAV None >1000% realtime 29.7 MB (31,211,242 bytes)
FLAC L0 660.67% realtime 25.1 MB (26,326,270 bytes)
FLAC L5 473.45% realtime 23.7 MB (24,872,743 bytes)
FLAC L8 386.14% realtime 23.6 MB (24,836,771 bytes)
OGG Q4/~128kbps 169.47% realtime 2.88 MB (3,025,123 bytes)
OGG Q7/~224kbps 148.12% realtime 5.34 MB (5,605,922 bytes)
MP3 - P CBR-128kbps 187.07% realtime 2.70 MB (2,832,512 bytes)
MP3 - P CBR-192kbps 182.91% realtime 4.05 MB (4,249,728 bytes)
MP3 - P ABR-128kbps 187.07% realtime 2.58 MB (2,713,728 bytes)
MP3 - P ABR-192kbps 182.83% realtime 3.93 MB (4,128,896 bytes)
MP3 - P VBR-V5 (~130kbps) 185.05% realtime 2.96 MB (3,113,088 bytes)
MP3 - P VBR-V2 (~190kbps) 176.95% realtime 5.16 MB (5,415,040 bytes)
MP3 - SVN CBR-128kbps 155.26% realtime 2.70 MB (2,832,512 bytes)
MP3 - SVN CBR-192kbps 152.49% realtime 4.05 MB (4,249,728 bytes)
MP3 - SVN ABR-128kbps 155.37% realtime 2.58 MB (2,713,728 bytes)
MP3 - SVN ABR-192kbps 152.49% realtime 3.93 MB (4,128,896 bytes)
MP3 - SVN VBR-V5 (~130kbps) 153.92% realtime 2.96 MB (3,113,088 bytes)
MP3 - SVN VBR-V2 (~190kbps) 148.24% realtime 5.16 MB (5,415,040 bytes)

Notes

The codec MP3 - P is the MP3 codec with the mpa_removed_iram.patch applied. However, the results from my latest patched build are different from previous tests. I will re-build and try again later.

WAV result is estimated. The test_codec plugin said "File too big".
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r1 - 24 May 2007 - 02:04:33 - BobbyGraese
Copyright by the contributing authors.