[gor]

ragazzi,mi sembra che non sia stato segnalato quindi ecco questo ottimo convertitore video che converte quasi tutto ed e freeware:

Free Video Converter V1.4

Free Video Converter is a freeware designed to convert all your Video files. It supports to convert your favorite video from / to AVI, MP4, iPod, PSP, 3GP (mobile phone format), Zune, iPhone, FLV, MKV, WMV, ASF, MOV, QuickTime, MPEG, RM, VCD, VOB...
With Free Video Converter, you can convert your video files into the formats you need (TV, website, Mobile Phone, iPod, Zune ...)

Features:

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Supports large range of formats like AVI, MP4, iPod, PSP, 3GP (mobile phone format), Zune, iPhone, FLV, MKV, WMV, ASF, MOV, QuickTime, MPEG, RM, VCD, VOB...
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You can choose to convert only some parts of your videos. Free Video Converter allow to set the Start Time, end time or duration that you wan to extract.
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You can choose to only extract the sound of your video into MP3, WMA, MP2, AAC...
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Extremely fast conversion speed.
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Completely FREE.
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For Windows 2000/XP/Vista. Size: 3.34MB

Home page :http://www.koyotesoft.com/indexEn.html