user21908: Why setting -r 30 still gives fps=15 in ffmpeg?
command:
fmpeg -loglevel verbose -pixel_format mjpeg -s hd720 -r 30 -i /dev/video1 -f libx264 -preset ultrafast -tune zerolatency -crf 23 -f matroska tcp://192.168.1.43:5000

output:
frame=10497 fps= 15 q=22.0 Lsize=  253990kB time=00:11:39.76 bitrate=2973.4kbit


user1871: fps= 15 represents the encoding speed, not the output file framerate.

21908: <p>Why setting -r 30 still gives fps=15 in ffmpeg?</p>

<p>command:</p>

<pre><code>fmpeg -loglevel verbose -pixel_format mjpeg -s hd720 -r 30 -i /dev/video1 -f libx264 -preset ultrafast -tune zerolatency -crf 23 -f matroska tcp://192.168.1.43:5000
</code></pre>

<p>output:</p>

<pre><code>frame=10497 fps= 15 q=22.0 Lsize=  253990kB time=00:11:39.76 bitrate=2973.4kbit
</code></pre>
 1871: <p><code>fps= 15</code> represents the encoding speed, not the output file framerate.</p>
