[FFmpeg-user] extracting images from video: please help me understand output

[lovelove]

Hi. I am trying to extract 1 image from a video every 10 seconds.

My command is: ffmpeg.exe -i inputfile.flv -r 0.1 -f image2 output-%03d.jpeg

The jpeg output files are as expected. Nevertheless I am wondering if
everything works correctly, because extraction is slow and in the ffmpeg
output each timecode (e.g. 00:00:20) is repeated ~5 times before going to
the next time code (e.g. 00:00:30). Thank you for any remarks/comments.

ffmpeg output:

frame=    2 fps=  0 q=2.7 size=      -0kB time=00:00:20.00 bitrate= 
-0.0kbits/s
frame=    2 fps=  0 q=2.7 size=      -0kB time=00:00:20.00 bitrate= 
-0.0kbits/s
frame=    2 fps=  1 q=2.7 size=      -0kB time=00:00:20.00 bitrate= 
-0.0kbits/s
frame=    2 fps=  1 q=2.7 size=      -0kB time=00:00:20.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    3 fps=  1 q=1.6 size=      -0kB time=00:00:30.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  1 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  1 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  1 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  1 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  1 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    4 fps=  0 q=1.6 size=      -0kB time=00:00:40.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  1 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  1 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  1 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  0 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  0 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    5 fps=  0 q=1.6 size=      -0kB time=00:00:50.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  1 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  0 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  0 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  0 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  0 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    6 fps=  0 q=1.6 size=      -0kB time=00:01:00.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    7 fps=  0 q=1.6 size=      -0kB time=00:01:10.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    8 fps=  0 q=1.6 size=      -0kB time=00:01:20.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=    9 fps=  0 q=1.6 size=      -0kB time=00:01:30.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 size=      -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 size=      -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 size=      -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 size=      -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 size=      -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s
frame=   10 fps=  0 q=1.6 Lsize=     -0kB time=00:01:40.00 bitrate= 
-0.0kbits/s


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