Video DownloadHelper โ ๐ฆ Firefox (ja) ๅใๆกๅผตๆฉ่ฝใๅ ฅๆ
Firefox ๅใ Video DownloadHelper ใใใฆใณใญใผใใไฝ็พใใฎ YouTube ใฎใใใชใตใคใใใ Web ใใใชใใใฆใณใญใผใใใฆๅคๆใใ็ฐกๅใชๆนๆณใงใใ
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