Am 02.04.2012 06:56, schrieb Murray Strome: > I have a video which is .mpg 720X480, 16:9 with the active video centred and > smaller than the full frame. I tried two things:
> 1. ffmpeg -i <In.mpg> -s hd720 -b 8500k <out.mpg> > 2. ffmpeg -i <in.mpg> -vf crop=540:304 -vf scale=1280:720 -s hd720 -b 8500k > <out.mpg> > I don't see any difference in the resulting two videos when I play them back > in any of the LINUX video players on my LINUX distribution, nor any of the > video players I see in Windows. The second command specifies explicitly what to do, while the first command just states "I want hd720 video output". Thus, some default behaviour of ffmpeg kicks in here. My guess ist that this default behaviour does the same as the explicitly specified processing instructions in the second command. But wait -- doesn't ffmpeg print detailed diagnostics on what it actually does while transforming the video. Maybe we could figure out from this output what is actually done to the video stream? Hermann V _______________________________________________ Cinelerra mailing list [email protected] https://init.linpro.no/mailman/skolelinux.no/listinfo/cinelerra
