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FFmpeg/avconv Benchmarks
Comparing the ffmpeg.exe and avconv.exe win32/win64 versions
October 9, 2011

  
 
8 OCT 2011 FFMPEG/AVCONV BENCHMARKS

OTHER FFMPEG/AVCONV BENCHMARKS
  21 Nov 2012
  26 Dec 2011

OVERVIEW
These are run times of ffmpeg.exe as downloaded from Zeranoe (FFmpeg.org) and avconv.exe as downloaded from win32.libav.org (libav.org). If you are not aware of why there are now two different web sites (ffmpeg.org and libav.org) and two different converters (ffmpeg.exe and avconv.exe), see the FFmpeg section of my useful utilities page. To get the run times below, I ran ffmpeg.exe and avconv.exe under Windows 7 on a core i5-670 (3.47 GHz, 2 cores, 4 threads). The source video is a 23-second, high-def (720p) video (.mts file) directly from my Panasonic Lumix camera.

It should be noted that as of October 8, 2011, each site (ffmpeg.org and libav.org) offers both ffmpeg.exe and avconv.exe executables. But I found that the avconv.exe from ffmpeg.org had virtually identical run times and behavior to ffmpeg.exe, and the ffmpeg.exe from libav.org now encourages you to use avconv.exe instead, so I stuck with the executables named for each site for these benchmarks.

As of October 8, 2011, somewhat surprisingly, the 32-bit ffmpeg download from Zeranoe is the only one that successfully does all of the conversions below. I'm not sure what the libav.org folks have against enabling .webm and .ogv encoding in their Windows builds.


CONVERTING TO MP4
Command-line options:   -i myfile.mts -strict experimental -threads <n> -s 640x360 -b:v 1250k -i_qfactor 0.71 -qcomp 0.6 -qmin 10 -qmax 63 -qdiff 4 -trellis 0 -vcodec libx264 -b:a 56k -ar 22050 outfile.mp4
Note: The "-strict experimental" command-line option is only necessary for the win32.libav.org downloads due to the aac audio encoding.

Run Times from Oct 8, 2011 Downloads
Command From Type Version gcc ver -threads 1 -threads 2 -threads 3 -threads 4
ffmpeg.exe zeranoe win32 static N-33308-g6638207 4.6.1 26.8 s 16.7 s 13.8 s 12.6 s
ffmpeg.exe zeranoe win64 static N-33308-g6638207 4.6.1 25.6 s 16.0 s 13.1 s 12.0 s
avconv.exe win32.libav.org win32 0.7-1157-gac6eab1 4.5.2 23.0 s 13.9 s 11.7 s 11.2 s
avconv.exe win32.libav.org win32 w/pthreads 0.7-1157-gac6eab1 4.5.2 22.9 s 14.2 s 38.5 s* 18.9 s*
avconv.exe win32.libav.org win64 0.7-1157-gac6eab1 4.5.2 21.6 s 13.2 s 11.2 s 10.6 s
* - Note regression in run times with pthreads version.


CONVERTING TO WEBM
Command-line options:   -i myfile.mts -threads <n> -s 640x360 -b:v 1250k -qmax 63 -b:a 56k -ar 22050 -acodec libvorbis outfile.webm
Run Times from Oct 8, 2011 Downloads
Command From Type Version gcc ver -threads 1 -threads 2 -threads 3 -threads 4
ffmpeg.exe zeranoe win32 static N-33308-g6638207 4.6.1 24.7 s 18.2 s 18.8 s 19.2 s
ffmpeg.exe zeranoe win64 static N-33308-g6638207 4.6.1 n/a*
avconv.exe win32.libav.org win32 0.7-1157-gac6eab1 4.5.2 n/a**
avconv.exe win32.libav.org win32 w/pthreads 0.7-1157-gac6eab1 4.5.2 n/a**
avconv.exe win32.libav.org win64 0.7-1157-gac6eab1 4.5.2 n/a**
* - ffmpeg.exe win64 version crashed.
** - win32.libav.org versions did not have .webm encoding.


CONVERTING TO OGG/THEORA
Command-line options:   -i myfile.mts -threads <n> -s 640x360 -b:v 1250k -qmax 63 -b:a 56k -ar 22050 -acodec libvorbis outfile.ogv
Run Times from Oct 8, 2011 Downloads
Command From Type Version gcc ver -threads 1 -threads 2 -threads 3 -threads 4
ffmpeg.exe zeranoe win32 static N-33308-g6638207 4.6.1 20.1 s*
ffmpeg.exe zeranoe win64 static N-33308-g6638207 4.6.1 19.0 s*
avconv.exe win32.libav.org win32 0.7-1157-gac6eab1 4.5.2 n/a**
avconv.exe win32.libav.org win32 w/pthreads 0.7-1157-gac6eab1 4.5.2 n/a**
avconv.exe win32.libav.org win64 0.7-1157-gac6eab1 4.5.2 n/a**
* - Number of threads seems to have no effect.
** - win32.libav.org versions did not have .ogv encoding.

 

This page last modified
Wednesday, 21-Nov-2012 11:15:11 PST