[MEncoder-users] Re: help encoding jpeg frames to video with soundtrack
Ken and Timi Cecka
ceckak at alumni.washington.edu
Thu Apr 20 04:08:01 CEST 2006
RC wrote:
> On Mon, 17 Apr 2006 20:50:25 -0700
> Ken and Timi Cecka <ceckak at alumni.washington.edu> wrote:
>
>> mencoder "mf://*.jpg" -mf fps=15 -o test800.avi -ovc lavc -lavcopts
>> vcodec=msmpeg4v2:vbitrate=800
>
> 800k is awfully low, particularly when you aren't using
> quality-improving options like mbd=2, trell, etc.
>
> I suggest reading the online HTML docs.
Thanks for the suggestions. I've been reading the online docs and
experimenting with a number of values, including higher bitrates.
Increasing the bitrate seems to help with the blockiness, but I can't
figure out how to get rid of the orange streaks. Here's an example:
original frame: http://k-n-t.homeip.net/tmp/10007.jpg
mplayer screenshot: http://k-n-t.homeip.net/tmp/encoded.jpg
This particular screenshot is from a video using the command quoted above,
but increasing the bitrate doesn't seem to resolve the issue. Any idea
what might be wrong?
Mario mentioned a possible with 16 bit images. I'm assuming he meant 16
bits per color channel? I'm pretty sure my images are only 8 bits per
channel, although I'm not quite sure how to verify this.
Ken
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