[XPERIA X10 Android Development] zephyrix:
Also, if anyone feels like it, here's formats that X10 can handle:

<?xml version="1.0" encoding="ISO-8859-1"?>
<devices>
<version>2.0</version>
<device>
<identification>
<model>X10a</model>
<marketingname>Xperia X10</marketingname>
<vendor>Sony Ericsson</vendor>
<brand>Xperia</brand>
<typeID>AAD-3880074-AV</typeID>
</identification>
<storage>
<type>CARD</type>
<max-full>90</max-full>
</storage>
<display index="0">
<height unit="pixels">854</height>
<width unit="pixels">480</width>
<colors>65536</colors>
</display>
<image>
<format id="JPEG" preferred="true">
<maxheight>1080</maxheight>
<maxwidth>1920</maxwidth>
<extension>jpg</extension>
<extension>jpeg</extension>
<mime-type>image/jpeg</mime-type>
</format>
<format id="BMP" preferred="false">
<extension>bmp</extension>
<mime-type>image/bmp</mime-type>
</format>
<format id="GIF" preferred="false">
<extension>gif</extension>
<mime-type>image/gif</mime-type>
</format>
<format id="PNG" preferred="false">
<extension>png</extension>
<mime-type>image/png</mime-type>
</format>
</image>
<audio>
<format id="AMR" preferred="false">
<extension>3gp</extension>
<mime-type>audio/amr</mime-type>
</format>
<format id="AMR-WB" preferred="false">
<extension>3gp</extension>
<mime-type>audio/amr-wb</mime-type>
</format>
<format id="WAV" preferred="false">
<extension>wav</extension>
<mime-type>audio/x-wav</mime-type>
</format>
<format id="MP3" preferred="false">
<extension>mp3</extension>
<mime-type>audio/mpeg</mime-type>
</format>
<format id="MP4" preferred="true">
<extension>mp4</extension>
<mime-type>audio/mp4</mime-type>
</format>
<format id="MIDI" preferred="false">
<extension>mid</extension>
<extension>midi</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="XMF" preferred="false">
<extension>xmf</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="Mobile XMF" preferred="false">
<extension>mxmf</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="RTTTL" preferred="false">
<extension>rtttl</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="RTX" preferred="false">
<extension>rtx</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="OTA" preferred="false">
<extension>ota</extension>
<mime-type>audio/midi</mime-type>
</format>
<format id="iMelody" preferred="false">
<extension>imy</extension>
<mime-type>audio/imelody</mime-type>
</format>
<format id="3GPP" preferred="false">
<extension>3gp</extension>
<mime-type>audio/3gpp</mime-type>
</format>
<format id="m4a" preferred="false">
<extension>m4a</extension>
<mime-type>audio/mp4</mime-type>
</format>
<format id="OGG" preferred="false">
<extension>ogg</extension>
<extension>oga</extension>
<mime-type>application/ogg</mime-type>
</format>
<format id="Windows media" preferred="false">
<extension>wma</extension>
<mime-type>audio/x-ms-wma</mime-type>
</format>
</audio>
<video>
<format preferred="true">
<extension>mp4</extension>
<extension>3gp</extension>
<mime-type>video/mp4</mime-type>
<mime-type>video/3gp</mime-type>
<encoding>mpeg-4</encoding>
<video>H264 Baseline</video>
<part>10</part>
<profile>0</profile>
<framesize id="720P">
<width>1280</width>
<height>720</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>6000</avgvideobitrate>
<peakvideobitrate>17408</peakvideobitrate>
<subtitles></subtitles>
<chapters></chapters>
<sound>AAC</sound>
<kbits>384</kbits>
</format>
<format preferred="false">
<extension>mp4</extension>
<extension>3gp</extension>
<mime-type>video/mp4</mime-type>
<mime-type>video/3gp</mime-type>
<encoding>mpeg-4</encoding>
<video>H264 Main</video>
<part>10</part>
<profile>77</profile>
<framesize id="HD 720p">
<width>1280</width>
<height>720</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>6000</avgvideobitrate>
<peakvideobitrate>17408</peakvideobitrate>
<subtitles></subtitles>
<chapters></chapters>
<sound>AAC</sound>
<kbits>384</kbits>
</format>
<format preferred="false">
<extension>mp4</extension>
<extension>3gp</extension>
<mime-type>video/mp4</mime-type>
<mime-type>video/3gp</mime-type>
<encoding>mpeg-4</encoding>
<video>H264 High</video>
<part>10</part>
<profile>100</profile>
<framesize id="HD 720p">
<width>1280</width>
<height>720</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>6000</avgvideobitrate>
<peakvideobitrate>17408</peakvideobitrate>
<subtitles></subtitles>
<chapters></chapters>
<sound>AAC</sound>
<kbits>384</kbits>
</format>
<format preferred="false">
<extension>3gp</extension>
<mime-type>video/3gp</mime-type>
<encoding>mpeg-4</encoding>
<video>MPEG-4 Visual</video>
<part>2</part>
<profile>SP</profile>
<framesize id="720P">
<width>1280</width>
<height>720</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>6000</avgvideobitrate>
<peakvideobitrate>20480</peakvideobitrate>
<sound>AAC</sound>
<kbits>384</kbits>
</format>
<format preferred="false">
<extension>3gp</extension>
<mime-type>video/3gp</mime-type>
<encoding>H.263</encoding>
<framesize id="WVGA">
<width>800</width>
<height>480</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>2000</avgvideobitrate>
<peakvideobitrate>10240</peakvideobitrate>
</format>
<format preferred="false">
<extension>wmv</extension>
<extension>asf</extension>
<mime-type>video/x-ms-wmv</mime-type>
<mime-type>video/x-ms-asf</mime-type>
<encoding>WMV</encoding>
<framesize id="CIF">
<width>352</width>
<height>288</height>
</framesize>
<framerate>30</framerate>
<avgvideobitrate>2000</avgvideobitrate>
<peakvideobitrate>10000</peakvideobitrate>
</format>
</video>
<filesystem>
<filename maxlength="255"/>
<folder maxlength="1023"/>
<path>
<camera>\DCIM\</camera>
<image>\picture\</image>
<video>\video\</video>
<videosources>
</videosources>
<sound>\music\</sound>
<soundsources>
</soundsources>
<feedsound>\music\podcast\</feedsound>
<feedvideo>\video\podcast\</feedvideo>
<feedimage>\picture\podcast\</feedimage>
<feeds>\other\</feeds>
</path>
</filesystem>
<drm>
<oma-v1>true</oma-v1>
<oma-v2>true</oma-v2>
<wmdrm>false</wmdrm>
</drm>
<sensme>
<available>false</available>
</sensme>
<albumart>
<displaysize unit="pixels">
<width>400</width>
<height>400</height>
</displaysize>
<filesize unit="bytes">1048576</filesize>
</albumart>
<wifi available="true"/>
<DLNA available="false"/>
<store name="Media Store" url="www.sonyericsson.com/mediastore">
<launchstoreexternally>true</launchstoreexternally>
</store>
<software>
<semcboot>
<productnumber>$SEMCBOOT_NUM</productnumber>
<productrevision>$SEMCBOOT_REV</productrevision>
</semcboot>
<app>
<productnumber>$SW_NUM</productnumber>
<productrevision>$SW_REV</productrevision>
</app>
<filesystem>
<productnumber>$FS_NUM</productnumber>
<productrevision>$FS_REV</productrevision>
</filesystem>
<cdf>
<productnumber>$CDF_NUM</productnumber>
<productrevision>$CDF_REV</productrevision>
</cdf>
</software>
<systemserialnumbers>
<IMEI>$IMEI</IMEI>
</systemserialnumbers>
</device>
</devices>

With a bit of tinkering you should be able to get the correct values for all the build.prop entries. :D