[FFmpeg-user] FFmpeg with bt 601 issue

[Belinda Mak]

Hi,

 I have a mov file which is not broadcast safe. I am looking into making a m2v file with broadcast safe filter. 

 Here is my command


 ffmpeg.exe -y -i "C:\tmp\709.mov" -top 1 -flags ildct+ilme -vcodec rawvideo -r 29.97 -aspect 16:9 -b:v 11500k -minrate 11500k -maxrate 11500k -bufsize 1835k -bf 2 -mbd rd -an -s 1920x1080 -pix_fmt yuv420p -profile 4 -level 4 -vf colormatrix=bt709:bt601 "C:\tmp\ffmpeg-601.m2v"

 The result file is still not boardcast safe. I couldn't find much info online. I know some people use avisynth then ffmpeg. Is that the only way to do it? 

 Thanks.

 Belinda