producer_avformat.c, consumer_avformat.c: use av_set_string3 where available (gets...

[mlt] / profiles / cvd_ntsc

description=CVD NTSC
frame_rate_num=30000
frame_rate_den=1001
width=352
height=480
progressive=0
sample_aspect_num=20
sample_aspect_den=11
display_aspect_num=4
display_aspect_den=3