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widlokm
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Joined: 22 Sep 2007
Posts: 25
Location: Poland

PostPosted: Sat Oct 20, 2012 1:35 pm    Post subject: guvcview video capture wrong with mjpeg Reply with quote

Dear Members,

I have problems with video capture in guvcview when I use MJPG video codec. The webcam (Logitech C270), drivers (uvc), audio works perfectly. The preview window, and recording in any other format (YUY2, MPEG, ect) is also OK. However when I record a video using MJPG it is very distorted and mplayer continuously reports:
mjpeg_decode_dc: bad vlc: 0:0
error dc
error y=4 x=44 (here the numbers varies for every frame).

I've tried to download a sample video in mjpg to test mplayer and it plays OK, so I assume that there are problems with encoding and guvcview, but I might be worng.
I'm using guvcview-1.5.1 and mplayer-1.0_rc4_p20110322-r1.
DO You have any idea what should I do to fix it? Is there any more info needed?

Thanks in advance,
Michael Widlok

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widlokm
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Joined: 22 Sep 2007
Posts: 25
Location: Poland

PostPosted: Mon Nov 19, 2012 8:01 am    Post subject: Reply with quote

Hello,

In my last message I've reported problems with MJPG and guvcview. Form that time I've tried some (or a lot of) combinations: different versions of mplayer, guvcview, ffmpeg, ect, but it did not changed anything. Please tell me what else can I try. It seems that nobody else has such problems, and I can not figure what is wrong on my system. If You have any idea what should I try (maybe use flags?) then please let me know.

Very Best Regards,
Michael Widlok
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