[FFmpeg-user] Question for using blackdetect video filter

[Carl Eugen Hoyos]

Wu-bin Zhen <vvubin <at> gmail.com> writes:

> Actually my input source is a http stream, not a static file.
> After few more tests I found that blackdetect works fine 
> with a static file but not with a http stream.

The following produces identical output here
for the http stream and a local file:
§ ffmpeg -loglevel info -i
http://samples.ffmpeg.org/V-codecs/SVQ3/Vertical400kbit.sorenson3.mov -vf
blackdetect=d=0.1 -f null -

Carl Eugen