[NTLUG:Discuss] OT Kdenlive

[Wayne Walker]

On Fri, Jun 25, 2010 at 11:38:25PM -0500, Fred James wrote:
> Oops ... I think I see the problem ...
>    format=avi vcodec=dvvideo ildct=1 pix_fmt=yuv411p
> acodec=pcm_s16le size=720x480 profile=dv_ntsc
> ... but if I change size to size=320x240, or 320x200, or 360x240, I
> get a 9.6 KB file that of course doesn't work
>
> Any hints ... googling hasn't helped so far

Major hint:

mpeg, mov, and avi are envelope formats.  like tar, ar, and zip (w/o the
compression).  mpeg, mov, and avi do not define the audio and video
codecs used to encode the audio and video streams.

mpeg2, mpeg3, mpeg4, mjpeg, etc. are video codecs, they define the
quality and size of the video stream.

mp3, aac, ogg, etc. are audio codecs, they define the
quality and size of the audio stream.

> Regard
> Fred James
>
> Fred James wrote:
> >I have an avi file from my camera that 23.4 MB (320x240)
> >I used Kdenlive to cut the clip into 2 parts, and exported the
> >parts as avi again
> >Each of the parts was larger than the original by about half again
> >
> >I used Kdenlive to export the same original file as mpeg (320x200
> >- high quality)
> >The resulting mpeg file is less than one third the size of the original
> >
> >Am I doing something wrong?
> >Regards
> >Fred James
> >
> >
> >
> >
>
> _______________________________________________
> http://www.ntlug.org/mailman/listinfo/discuss

--

Wayne Walker
wwalker at solid-constructs.com
(512) 633-8076
Senior Consultant
Solid Constructs, LLC