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Old 04.06.2018, 15:13
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Jiaz Jiaz is offline
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Join Date: Mar 2009
Location: Germany
Posts: 58,746
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Filesize may vary because of different quality for same resolution or re-encoded vs chunked original. JDownloader does only feed the segments into ffmpeg that merges the segments into one playback file.
Maybe the video itself is cause of *no thumbnail*? Maybe the scene was black for that moment? Or maybe some sort of error log of MPC?

Do you mean thumbnail in Windows or your Playback software?
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