Alexander -
I think you might be right about the interlacing. When I run the
"original" from iMovie HD in 1080 it looks OK... no Ghosts.
So I'm in expert mode in iMovie while exporting... and using the
deinterlace switch. The question is what best compression to use for
a 700/800 wide picture when the original is 1900 pixels?
This appears to be a trial and error process
Alexander Bethke said the following:
You might try deinterlacing your material before the encoding. At least
I can see two movement phases when looking at a still from your
material. This will increase the efficiency of the encoding process and
make a sharper picture. ffmpeg for instance has a -deinterlace
parameter. Deinterlacing is usually recommended when showing material on
a computers screen only.
Otherwise I might be wrong and you did actually deinterlace. Then it is
not really a good one, or the "ghoust image" problem comes from
something else. Then I do not want to have said anything.
Regards, Alex
John Kirby wrote:
I have been shooting 1080i and have been playing with format
(down-size to 720p) via Compressor to get a suite spot for good
performance/quality.
Right now my large format in a flv is 720 x420 with either 30 FPS or
24 FPS. The file is around 55--> 60 mb (compressed from the original
5.7 Gb!).
So are there any rules of thumb for frame rates, compression flv
encodings to take the high end 1080i and get good quality/performance.
What I'm seeing is occasional blurring of the image in the 720 x 420
format.
You can see what I'm talking about at
<http://infinitymedialabs.com/copper/choppers/2007> Click on videos
tab. Hit connect and select Week1_Large.flv
I'm running 0.5 version of Red5.
This could be because I'm streaming a large file?
.j
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