On Thu, Sep 18, 2014 at 9:54 AM, Keith Johnson <ke...@xentrik.tv> wrote:
> I've tested capturing two HDV streams at the same time with dvgrab and
> it's fine - left cameras running for 20 hours and no glitches. Only thing
> I'm stuck on is creating a composite video file with 1/2 resolution
> side-by-side view of the two files.
If you want a side-by-side view and don't mind a lot of black padding:
melt -profile hdv_720_25p color:black -track noise: -track
~/Movies/bbb_youtube_h264_499kbit.mp4 -transition composite a_track=0
b_track=1 geometry="0/0:50%x100%" fill=1 valign=middle -transition
composite a_track=0 b_track=2 geometry="50%/0:50%x100%" fill=1 valign=middle
Note the use of a black background track onto which to compose the 2
sources. If you do not want all of that padding, then you need to make the
output aspect twice as wide as the 16:9 sources.
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