I am slowing 1440×1080 video (with aspect ratio 16:9) from my hdr fx1000 using the command lifted from cinelerra controls.
ffmpeg -i dvgrabinput.m2t -an -f yuv4mpegpipe – | yuvfps -s 5:1 -r 5:1 | ffmpeg -f yuv4mpegpipe -i – -f mpeg2video -r 25 -an -qscale 2 slowoutput.mpg
the output file now has an aspect of 4:3 but when I try to convert to 16:9 with
ffmpeg -sameq -i slowoutput.mpg -aspect 16;9 slowoutputr.mpg
the ratio remains unchanged -still 4:3
If I convert to mp4
ffmpeg -sameq -i slowoutput.mpg -aspect 16;9 slowoutputr.mp4
then the aspect is changed. Any ideas how to change the aspect ratio and keep mpg format?
Thanks