Hello all,
I am using the following command successfully to generate a screencast.
The video comes from my program 'gen-vid' which outputs the raw frames
with alpha channel. The resulting .avi has alpha channel as well which is
my goal. It all works great except that my computer can't handle doing it
real-time. So I am wondering if there is a different vcodec I could use to
achieve the same result that was less demaning on the cpu? I am willing to
sacrifice some compression for more speed, but would prefer not to have to
store all the raw frames without any compression. Storing the alpha
channel is also a must. It is preferable if the compression is lossless.
Does anyone have any other suggestions for compression other than png that
may be faster? Thanks!
./gen-vid | ffmpeg -f rawvideo -pixel_format bgra -video_size 1920x1080
-framerate 30 -i - -vcodec png over.avi
Josh
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