Using Videos with Bob¶
Video read and write support in Bob uses FFmpeg as implementation backend. In Ubuntu-based distributions, FFmpeg was replaced by libav, which is a fork based on FFmpeg version 0.8. Bob can detect and use libav when FFmpeg is not available on the machine. We currently support a variety of FFmpeg (and libav) releases, ranging from FFmpeg 0.5 until the most recent branches.
FFmpeg (and libav) provide a (reasonably) uniform API for reading and writing data into a variety of video container formats, using different video and audio codecs. Bob leverages on this API to propose a sub-range of formats and codecs that work well together, with low distortion patterns and accross platforms.
Note
As much as we strive to make video formats and codecs available to all platforms in which Bob is available, codecs, in particular may be disabled by compilation options on FFmpeg or libav, in which case Bob builds will not be able to use them.
Note
Currently, Bob does not support reading or writing of audio streams on video data - only images.
This section provides guidance in choosing a set of formats and codecs for your project, so you will be able to leverage the maximum from Bob.
Codec and Format Availability¶
To get a list of all FFmpeg (or libav) supported formats for a given build of
Bob, use the bob_video_test.py application provided by this module:
$ bob_video_test.py --list-all-codecs # lists all codecs available
$ bob_video_test.py --list-all-formats # lists all formats available
These listings represent all that is compiled with your current installation of FFmpeg or libav. To list supported formats and codecs by Bob use another set of command-line options:
$ bob_video_test.py --list-codecs # lists all codecs currently supported
$ bob_video_test.py --list-formats # lists all formats currently supported
The program bob_video_test.py can be used to run a sequence of tests using
all combinations of supported formats and tests:
$ bob_video_test.py # runs all tests
This will run through all combinations of supported codecs and formats and will report average distortion figures for each of 4 different tests, which exercise different aspects of each combination of format and codec. Here is a an example output:
Video Encoding/Decoding Test Tool v1.2.0a0 (bob_video_test)
Settings:
Width : 128 pixels
Height : 128 pixels
Length : 30 frames
Framerate: 30.000000 Hz
Legend:
C: Color test
N: Noise test
U: User test
S: Frameskip test
Running 4 test(s)...CSNU
=========== ===== ======= =======================================
test fmt codec figure (lower means better quality)
=========== ===== ======= =======================================
color mov h264 4.603 min=0.890@22 max=8.387@9
frameskip mov h264 0.108 min=0.009@11 max=0.344@0
noise mov h264 44.900 min=43.916@4 max=46.103@29
user mov h264 1.983 min=1.525@0 max=2.286@7
=========== ===== ======= =======================================
Each line in the output table represents the average distortion patterns for the particular test using the format and codec described. The lower the distortion, the better the combination of format and codecs is. Different tests have different levels of baseline performance. The figures above were obtained in a healthy (no know bugs) system, running libav 0.8.13 (Ubuntu 12.10). Each line indicates, besides the average distortion per frame, the minimum and the maximum obtained and in which frame (counting from 0 - zero), that figure was obtained.
The video tests are made on temporary files that are discarded after the test
is completed. You can use the option --output=<directory> to specify a
directory in which the generated files will be saved. You can then go to these
directories and explore potential problems you may find.
Each test creates a video from an artificially generated test signal, encodes
it using the defined format and codec and reads it back, comparing the output
result with the original sequence. The sole exception is the user test. In
this test, a user test sequence is (partially) loaded and tested. If you don’t
specify any sequence, a default sequence from Bob is used. If you want to
test a specific sequence of your own, use --user-video to specify the path
of the video sequence you want to test with. By default, only the first 10
frames of the sequence are used for the test, to speed-up execution. You can
change this behavior with the option --user-frames. Here is an example:
$ bob_video_test.py --user-video=test_sample.avi
All tests are executed by default, on all combination of formats and codecs.
That can be long. You can limit the test execution by properly choosing the
format (--format), the codec (--codec) and the tests to execute. For
example:
# execute only the user video test with a user provided video and
# using the H.264 built-in codec and a MOV output file format.
$ bob_video_test.py --format mov --codec h264 --user-video=test_sample.avi -- user
Note
Not all codecs can be used by all formats available. For example, the mp4
file format cannot use the vp8 codec, even if both are supported by
Bob. To know which formats support each codec, you can execute the
following python code:
>>> import bob.io.video
>>> codecs = bob.io.video.supported_videowriter_formats()['mp4']['supported_codecs'].keys()
>>> print(codecs)
['h264', 'libx264', 'mjpeg', 'mpeg1video']
You can see from the output command that only 4 codecs are supported by the
file format mp4.
You can test new combinations of formats and codecs which are not currently
supported by Bob, as long as they are supported by the underlying FFmpeg
or libav installations. In this case, just specify the format and/or codec
names using --format and --codec options in the application
bob_video_test.py. The advantage of using supported formats and codecs is
that we make sure a minimal distortion figure is respected in all platform
nightly builds, with our unit and integration tests. We cannot, currently,
test all possible combinations of codecs and formats.
Know Your Platforms¶
One important aspect when working with videos is to know there will be some
lossy compression applied to the output. This means you will loose
information when re-encoding. When working with videos, you will want to choose
the combination of format and codec that will work well accross different
platforms. We recommend to run bob_video_test.py with a few of your video
inputs to make sure they can be decoded with low distortion where you plan to
work.
Note
The only codec that supports lossless compression in Bob is zlib.
Of course, the output files are considerably bigger, but they continue to be
readable using any FFmpeg-based movie player or even QuickTime (on OSX), if
Perian is installed.
Example Output in Different Platforms¶
In what follows, you will find some tabbed output for different combinations of operating systems and FFmpeg/libav versions. To run these tests we only executed:
$ bob_video_test.py
Idiap Linux (Xubuntu), version 12.10 + libav 0.8.3¶
| test | fmt | codec | figure (lower means better quality) |
|---|---|---|---|
| color | avi | ffv1 | 4.569 min=0.888@22 max=8.377@9 |
| color | avi | h264 | 4.603 min=0.890@22 max=8.388@9 |
| color | avi | libvpx | 4.657 min=0.955@26 max=8.528@9 |
| color | avi | libx264 | 4.603 min=0.890@22 max=8.388@9 |
| color | avi | mjpeg | 4.676 min=0.965@22 max=8.469@9 |
| color | avi | mpeg1video | 4.781 min=1.103@28 max=8.483@9 |
| color | avi | mpeg2video | 4.741 min=1.004@16 max=8.466@9 |
| color | avi | mpeg4 | 4.892 min=1.087@24 max=8.658@9 |
| color | avi | msmpeg4 | 4.921 min=1.073@24 max=8.717@9 |
| color | avi | msmpeg4v2 | 4.921 min=1.073@24 max=9.181@17 |
| color | avi | vp8 | 4.657 min=0.955@26 max=8.528@9 |
| color | avi | wmv1 | 4.871 min=1.087@24 max=8.729@9 |
| color | avi | wmv2 | 4.884 min=1.093@24 max=8.823@9 |
| color | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| color | mov | ffv1 | 4.569 min=0.888@22 max=8.377@9 |
| color | mov | h264 | 4.603 min=0.890@22 max=8.387@9 |
| color | mov | libvpx | 4.657 min=0.955@26 max=8.528@9 |
| color | mov | libx264 | 4.603 min=0.890@22 max=8.387@9 |
| color | mov | mjpeg | 4.676 min=0.965@22 max=8.469@9 |
| color | mov | mpeg1video | 4.781 min=1.103@28 max=8.483@9 |
| color | mov | mpeg2video | 4.741 min=1.004@16 max=8.466@9 |
| color | mov | mpeg4 | 4.892 min=1.087@24 max=8.658@9 |
| color | mov | msmpeg4 | 4.921 min=1.073@24 max=8.717@9 |
| color | mov | msmpeg4v2 | 4.921 min=1.073@24 max=9.181@17 |
| color | mov | vp8 | 4.657 min=0.955@26 max=8.528@9 |
| color | mov | wmv1 | 4.871 min=1.087@24 max=8.729@9 |
| color | mov | wmv2 | 4.884 min=1.093@24 max=8.823@9 |
| color | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| color | mp4 | ffv1 | format+codec unsupported |
| color | mp4 | h264 | 4.603 min=0.890@22 max=8.387@9 |
| color | mp4 | libvpx | format+codec unsupported |
| color | mp4 | libx264 | 4.603 min=0.890@22 max=8.387@9 |
| color | mp4 | mjpeg | 4.676 min=0.965@22 max=8.469@9 |
| color | mp4 | mpeg1video | 4.781 min=1.103@28 max=8.483@9 |
| color | mp4 | mpeg2video | 4.741 min=1.004@16 max=8.466@9 |
| color | mp4 | mpeg4 | 4.892 min=1.087@24 max=8.658@9 |
| color | mp4 | msmpeg4 | format+codec unsupported |
| color | mp4 | msmpeg4v2 | format+codec unsupported |
| color | mp4 | vp8 | format+codec unsupported |
| color | mp4 | wmv1 | format+codec unsupported |
| color | mp4 | wmv2 | format+codec unsupported |
| color | mp4 | zlib | format+codec unsupported |
| frameskip | avi | ffv1 | 0.018 min=0.002@11 max=0.029@8 |
| frameskip | avi | h264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | avi | libvpx | 0.129 min=0.042@11 max=0.198@8 |
| frameskip | avi | libx264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | avi | mjpeg | 0.380 min=0.141@11 max=1.108@0 |
| frameskip | avi | mpeg1video | 0.426 min=0.237@17 max=1.338@0 |
| frameskip | avi | mpeg2video | 0.411 min=0.223@15 max=1.284@0 |
| frameskip | avi | mpeg4 | 0.454 min=0.263@17 max=0.858@0 |
| frameskip | avi | msmpeg4 | 1.684 min=0.257@12 max=3.766@15 |
| frameskip | avi | msmpeg4v2 | 1.683 min=0.257@12 max=3.765@15 |
| frameskip | avi | vp8 | 0.129 min=0.042@11 max=0.198@8 |
| frameskip | avi | wmv1 | 0.627 min=0.191@11 max=1.568@8 |
| frameskip | avi | wmv2 | 0.626 min=0.191@11 max=1.566@8 |
| frameskip | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| frameskip | mov | ffv1 | 0.018 min=0.002@11 max=0.029@8 |
| frameskip | mov | h264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | mov | libvpx | 0.129 min=0.042@11 max=0.198@8 |
| frameskip | mov | libx264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | mov | mjpeg | 0.380 min=0.141@11 max=1.108@0 |
| frameskip | mov | mpeg1video | 0.426 min=0.237@17 max=1.338@0 |
| frameskip | mov | mpeg2video | 0.411 min=0.223@15 max=1.284@0 |
| frameskip | mov | mpeg4 | 0.454 min=0.263@17 max=0.858@0 |
| frameskip | mov | msmpeg4 | 1.684 min=0.257@12 max=3.766@15 |
| frameskip | mov | msmpeg4v2 | 1.683 min=0.257@12 max=3.765@15 |
| frameskip | mov | vp8 | 0.129 min=0.042@11 max=0.198@8 |
| frameskip | mov | wmv1 | 0.627 min=0.191@11 max=1.568@8 |
| frameskip | mov | wmv2 | 0.626 min=0.191@11 max=1.566@8 |
| frameskip | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| frameskip | mp4 | ffv1 | format+codec unsupported |
| frameskip | mp4 | h264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | mp4 | libvpx | format+codec unsupported |
| frameskip | mp4 | libx264 | 0.108 min=0.009@11 max=0.344@0 |
| frameskip | mp4 | mjpeg | 0.380 min=0.141@11 max=1.108@0 |
| frameskip | mp4 | mpeg1video | 0.426 min=0.237@17 max=1.338@0 |
| frameskip | mp4 | mpeg2video | 0.411 min=0.223@15 max=1.284@0 |
| frameskip | mp4 | mpeg4 | 0.454 min=0.263@17 max=0.858@0 |
| frameskip | mp4 | msmpeg4 | format+codec unsupported |
| frameskip | mp4 | msmpeg4v2 | format+codec unsupported |
| frameskip | mp4 | vp8 | format+codec unsupported |
| frameskip | mp4 | wmv1 | format+codec unsupported |
| frameskip | mp4 | wmv2 | format+codec unsupported |
| frameskip | mp4 | zlib | format+codec unsupported |
| noise | avi | ffv1 | 44.192 min=43.887@0 max=44.568@8 |
| noise | avi | h264 | 44.882 min=43.738@2 max=45.848@27 |
| noise | avi | libvpx | 48.629 min=44.156@12 max=54.365@27 |
| noise | avi | libx264 | 44.883 min=44.089@2 max=45.857@29 |
| noise | avi | mjpeg | 45.723 min=43.942@3 max=48.283@28 |
| noise | avi | mpeg1video | 46.270 min=44.412@2 max=48.632@29 |
| noise | avi | mpeg2video | 45.227 min=44.008@5 max=48.528@29 |
| noise | avi | mpeg4 | 45.769 min=43.720@4 max=48.472@27 |
| noise | avi | msmpeg4 | 45.757 min=44.034@7 max=48.055@24 |
| noise | avi | msmpeg4v2 | 45.789 min=43.908@6 max=48.423@27 |
| noise | avi | vp8 | 48.796 min=43.765@0 max=50.864@15 |
| noise | avi | wmv1 | 45.729 min=43.878@6 max=47.921@29 |
| noise | avi | wmv2 | 46.105 min=44.205@3 max=48.261@28 |
| noise | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| noise | mov | ffv1 | 44.200 min=43.869@20 max=44.719@22 |
| noise | mov | h264 | 44.882 min=43.991@6 max=46.183@27 |
| noise | mov | libvpx | 48.692 min=43.934@0 max=50.906@15 |
| noise | mov | libx264 | 44.909 min=43.773@3 max=46.079@29 |
| noise | mov | mjpeg | 45.754 min=43.823@8 max=48.278@28 |
| noise | mov | mpeg1video | 46.353 min=44.326@1 max=48.712@29 |
| noise | mov | mpeg2video | 45.970 min=43.952@4 max=50.645@29 |
| noise | mov | mpeg4 | 45.772 min=43.961@4 max=48.414@28 |
| noise | mov | msmpeg4 | 45.764 min=43.867@5 max=48.156@29 |
| noise | mov | msmpeg4v2 | 45.844 min=44.009@6 max=48.317@27 |
| noise | mov | vp8 | 48.323 min=43.985@12 max=50.512@19 |
| noise | mov | wmv1 | 45.803 min=44.109@3 max=48.334@29 |
| noise | mov | wmv2 | 46.081 min=43.950@4 max=48.293@26 |
| noise | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| noise | mp4 | ffv1 | format+codec unsupported |
| noise | mp4 | h264 | 44.856 min=43.749@1 max=46.045@27 |
| noise | mp4 | libvpx | format+codec unsupported |
| noise | mp4 | libx264 | 44.785 min=43.820@0 max=46.093@28 |
| noise | mp4 | mjpeg | 45.725 min=43.979@7 max=48.208@28 |
| noise | mp4 | mpeg1video | 46.227 min=44.144@2 max=48.241@27 |
| noise | mp4 | mpeg2video | 46.060 min=43.991@5 max=51.358@29 |
| noise | mp4 | mpeg4 | 45.690 min=44.072@6 max=47.974@28 |
| noise | mp4 | msmpeg4 | format+codec unsupported |
| noise | mp4 | msmpeg4v2 | format+codec unsupported |
| noise | mp4 | vp8 | format+codec unsupported |
| noise | mp4 | wmv1 | format+codec unsupported |
| noise | mp4 | wmv2 | format+codec unsupported |
| noise | mp4 | zlib | format+codec unsupported |
| user | avi | ffv1 | 1.174 min=1.166@2 max=1.187@7 |
| user | avi | h264 | 1.988 min=1.525@0 max=2.290@7 |
| user | avi | libvpx | 1.614 min=1.464@0 max=1.711@8 |
| user | avi | libx264 | 1.988 min=1.525@0 max=2.290@7 |
| user | avi | mjpeg | 1.067 min=1.014@2 max=1.444@0 |
| user | avi | mpeg1video | 1.586 min=1.447@1 max=1.895@0 |
| user | avi | mpeg2video | 1.743 min=1.515@3 max=1.891@8 |
| user | avi | mpeg4 | 1.794 min=1.606@1 max=1.906@9 |
| user | avi | msmpeg4 | 1.802 min=1.599@1 max=1.925@8 |
| user | avi | msmpeg4v2 | 1.775 min=1.599@1 max=1.868@9 |
| user | avi | vp8 | 1.614 min=1.464@0 max=1.711@8 |
| user | avi | wmv1 | 1.802 min=1.599@1 max=1.925@8 |
| user | avi | wmv2 | 1.799 min=1.596@1 max=1.921@8 |
| user | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| user | mov | ffv1 | 1.174 min=1.166@2 max=1.187@7 |
| user | mov | h264 | 1.983 min=1.525@0 max=2.286@7 |
| user | mov | libvpx | 1.614 min=1.464@0 max=1.711@8 |
| user | mov | libx264 | 1.983 min=1.525@0 max=2.286@7 |
| user | mov | mjpeg | 1.067 min=1.014@2 max=1.444@0 |
| user | mov | mpeg1video | 1.586 min=1.447@1 max=1.895@0 |
| user | mov | mpeg2video | 1.743 min=1.515@3 max=1.891@8 |
| user | mov | mpeg4 | 1.794 min=1.606@1 max=1.906@9 |
| user | mov | msmpeg4 | 1.802 min=1.599@1 max=1.925@8 |
| user | mov | msmpeg4v2 | 1.775 min=1.599@1 max=1.868@9 |
| user | mov | vp8 | 1.614 min=1.464@0 max=1.711@8 |
| user | mov | wmv1 | 1.802 min=1.599@1 max=1.925@8 |
| user | mov | wmv2 | 1.799 min=1.596@1 max=1.921@8 |
| user | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| user | mp4 | ffv1 | format+codec unsupported |
| user | mp4 | h264 | 1.983 min=1.525@0 max=2.286@7 |
| user | mp4 | libvpx | format+codec unsupported |
| user | mp4 | libx264 | 1.983 min=1.525@0 max=2.286@7 |
| user | mp4 | mjpeg | 1.067 min=1.014@2 max=1.444@0 |
| user | mp4 | mpeg1video | 1.586 min=1.447@1 max=1.895@0 |
| user | mp4 | mpeg2video | 1.743 min=1.515@3 max=1.891@8 |
| user | mp4 | mpeg4 | 1.794 min=1.606@1 max=1.906@9 |
| user | mp4 | msmpeg4 | format+codec unsupported |
| user | mp4 | msmpeg4v2 | format+codec unsupported |
| user | mp4 | vp8 | format+codec unsupported |
| user | mp4 | wmv1 | format+codec unsupported |
| user | mp4 | wmv2 | format+codec unsupported |
| user | mp4 | zlib | format+codec unsupported |
MacOSX 10.8.3 + FFmpeg 1.1.2¶
| test | fmt | codec | figure (lower is better quality) |
|---|---|---|---|
| color | avi | ffv1 | 4.643 min=0.999@24 max=8.420@9 |
| color | avi | h264 | 4.685 min=1.001@24 max=8.473@9 |
| color | avi | libvpx | 4.736 min=1.079@26 max=8.503@9 |
| color | avi | libx264 | 4.685 min=1.001@24 max=8.473@9 |
| color | avi | mjpeg | 4.617 min=0.934@24 max=8.440@9 |
| color | avi | mpeg1video | 4.820 min=1.125@16 max=8.548@9 |
| color | avi | mpeg2video | 4.787 min=1.130@16 max=8.465@9 |
| color | avi | mpeg4 | 4.956 min=1.129@24 max=8.725@9 |
| color | avi | mpegvideo | 4.787 min=1.130@16 max=8.465@9 |
| color | avi | msmpeg4 | 4.987 min=1.114@24 max=8.731@9 |
| color | avi | msmpeg4v2 | 4.949 min=1.114@24 max=8.667@9 |
| color | avi | vp8 | 4.736 min=1.079@26 max=8.503@9 |
| color | avi | wmv1 | 4.925 min=1.129@24 max=8.728@9 |
| color | avi | wmv2 | 4.936 min=1.138@24 max=8.796@9 |
| color | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| color | mov | ffv1 | 4.643 min=0.999@24 max=8.420@9 |
| color | mov | h264 | 4.645 min=1.001@24 max=8.424@9 |
| color | mov | libvpx | 4.736 min=1.079@26 max=8.503@9 |
| color | mov | libx264 | 4.645 min=1.001@24 max=8.424@9 |
| color | mov | mjpeg | 4.617 min=0.934@24 max=8.440@9 |
| color | mov | mpeg1video | 4.820 min=1.125@16 max=8.548@9 |
| color | mov | mpeg2video | 4.787 min=1.130@16 max=8.465@9 |
| color | mov | mpeg4 | 4.956 min=1.129@24 max=8.725@9 |
| color | mov | mpegvideo | 4.787 min=1.130@16 max=8.465@9 |
| color | mov | msmpeg4 | 4.987 min=1.114@24 max=8.731@9 |
| color | mov | msmpeg4v2 | 4.949 min=1.114@24 max=8.667@9 |
| color | mov | vp8 | 4.736 min=1.079@26 max=8.503@9 |
| color | mov | wmv1 | 4.925 min=1.129@24 max=8.728@9 |
| color | mov | wmv2 | 4.936 min=1.138@24 max=8.796@9 |
| color | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| color | mp4 | ffv1 | format+codec unsupported |
| color | mp4 | h264 | 4.645 min=1.001@24 max=8.424@9 |
| color | mp4 | libvpx | format+codec unsupported |
| color | mp4 | libx264 | 4.645 min=1.001@24 max=8.424@9 |
| color | mp4 | mjpeg | 4.617 min=0.934@24 max=8.440@9 |
| color | mp4 | mpeg1video | 4.820 min=1.125@16 max=8.548@9 |
| color | mp4 | mpeg2video | 4.787 min=1.130@16 max=8.465@9 |
| color | mp4 | mpeg4 | 4.956 min=1.129@24 max=8.725@9 |
| color | mp4 | mpegvideo | 4.787 min=1.130@16 max=8.465@9 |
| color | mp4 | msmpeg4 | format+codec unsupported |
| color | mp4 | msmpeg4v2 | format+codec unsupported |
| color | mp4 | vp8 | format+codec unsupported |
| color | mp4 | wmv1 | format+codec unsupported |
| color | mp4 | wmv2 | format+codec unsupported |
| color | mp4 | zlib | format+codec unsupported |
| frameskip | avi | ffv1 | 0.018 min=0.002@11 max=0.029@8 |
| frameskip | avi | h264 | 0.120 min=0.017@21 max=0.300@0 |
| frameskip | avi | libvpx | 0.122 min=0.051@11 max=0.181@0 |
| frameskip | avi | libx264 | 0.120 min=0.017@21 max=0.300@0 |
| frameskip | avi | mjpeg | 0.386 min=0.147@11 max=1.085@0 |
| frameskip | avi | mpeg1video | 0.427 min=0.243@11 max=1.310@0 |
| frameskip | avi | mpeg2video | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | avi | mpeg4 | 0.456 min=0.253@12 max=0.849@0 |
| frameskip | avi | mpegvideo | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | avi | msmpeg4 | 1.608 min=0.434@24 max=3.409@25 |
| frameskip | avi | msmpeg4v2 | 1.600 min=0.434@24 max=3.708@5 |
| frameskip | avi | vp8 | 0.122 min=0.051@11 max=0.181@0 |
| frameskip | avi | wmv1 | 0.617 min=0.191@11 max=1.981@8 |
| frameskip | avi | wmv2 | 0.614 min=0.191@11 max=1.978@8 |
| frameskip | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| frameskip | mov | ffv1 | 0.018 min=0.002@11 max=0.029@8 |
| frameskip | mov | h264 | 0.042 min=0.011@11 max=0.085@9 |
| frameskip | mov | libvpx | 0.122 min=0.051@11 max=0.181@0 |
| frameskip | mov | libx264 | 0.042 min=0.011@11 max=0.085@9 |
| frameskip | mov | mjpeg | 0.386 min=0.147@11 max=1.085@0 |
| frameskip | mov | mpeg1video | 0.427 min=0.243@11 max=1.310@0 |
| frameskip | mov | mpeg2video | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | mov | mpeg4 | 0.456 min=0.253@12 max=0.849@0 |
| frameskip | mov | mpegvideo | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | mov | msmpeg4 | 1.608 min=0.434@24 max=3.409@25 |
| frameskip | mov | msmpeg4v2 | 1.600 min=0.434@24 max=3.708@5 |
| frameskip | mov | vp8 | 0.122 min=0.051@11 max=0.181@0 |
| frameskip | mov | wmv1 | 0.617 min=0.191@11 max=1.981@8 |
| frameskip | mov | wmv2 | 0.614 min=0.191@11 max=1.978@8 |
| frameskip | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| frameskip | mp4 | ffv1 | format+codec unsupported |
| frameskip | mp4 | h264 | 0.042 min=0.011@11 max=0.085@9 |
| frameskip | mp4 | libvpx | format+codec unsupported |
| frameskip | mp4 | libx264 | 0.042 min=0.011@11 max=0.085@9 |
| frameskip | mp4 | mjpeg | 0.386 min=0.147@11 max=1.085@0 |
| frameskip | mp4 | mpeg1video | 0.427 min=0.243@11 max=1.310@0 |
| frameskip | mp4 | mpeg2video | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | mp4 | mpeg4 | 0.456 min=0.253@12 max=0.849@0 |
| frameskip | mp4 | mpegvideo | 0.408 min=0.229@17 max=1.258@0 |
| frameskip | mp4 | msmpeg4 | format+codec unsupported |
| frameskip | mp4 | msmpeg4v2 | format+codec unsupported |
| frameskip | mp4 | vp8 | format+codec unsupported |
| frameskip | mp4 | wmv1 | format+codec unsupported |
| frameskip | mp4 | wmv2 | format+codec unsupported |
| frameskip | mp4 | zlib | format+codec unsupported |
| noise | avi | ffv1 | 44.108 min=43.717@16 max=44.565@22 |
| noise | avi | h264 | 44.509 min=43.859@4 max=45.146@27 |
| noise | avi | libvpx | 46.882 min=43.812@1 max=49.422@18 |
| noise | avi | libx264 | 44.572 min=43.917@5 max=45.236@29 |
| noise | avi | mjpeg | 45.739 min=43.819@4 max=48.211@29 |
| noise | avi | mpeg1video | 46.320 min=44.273@3 max=48.996@29 |
| noise | avi | mpeg2video | 46.054 min=43.987@7 max=51.580@29 |
| noise | avi | mpeg4 | 45.755 min=44.071@2 max=48.502@28 |
| noise | avi | mpegvideo | 44.951 min=43.775@1 max=46.796@24 |
| noise | avi | msmpeg4 | 45.749 min=43.934@5 max=48.267@29 |
| noise | avi | msmpeg4v2 | 45.846 min=43.987@0 max=48.264@27 |
| noise | avi | vp8 | 46.457 min=43.931@12 max=48.857@27 |
| noise | avi | wmv1 | 45.804 min=44.219@10 max=48.252@28 |
| noise | avi | wmv2 | 46.091 min=44.113@3 max=48.380@25 |
| noise | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| noise | mov | ffv1 | 44.128 min=43.657@15 max=44.513@21 |
| noise | mov | h264 | 44.168 min=43.794@24 max=44.577@7 |
| noise | mov | libvpx | 47.009 min=44.127@4 max=49.547@17 |
| noise | mov | libx264 | 44.143 min=43.813@23 max=44.529@16 |
| noise | mov | mjpeg | 44.378 min=44.020@18 max=44.670@0 |
| noise | mov | mpeg1video | 44.564 min=43.903@9 max=45.314@0 |
| noise | mov | mpeg2video | 44.340 min=44.021@26 max=44.733@0 |
| noise | mov | mpeg4 | 44.338 min=43.923@3 max=44.677@11 |
| noise | mov | mpegvideo | 44.343 min=43.978@8 max=44.904@29 |
| noise | mov | msmpeg4 | 44.293 min=43.870@9 max=44.669@24 |
| noise | mov | msmpeg4v2 | 44.256 min=43.859@5 max=44.596@21 |
| noise | mov | vp8 | 47.558 min=43.955@0 max=52.720@25 |
| noise | mov | wmv1 | 44.283 min=43.848@24 max=44.643@14 |
| noise | mov | wmv2 | 44.323 min=43.957@10 max=44.727@0 |
| noise | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| noise | mp4 | ffv1 | format+codec unsupported |
| noise | mp4 | h264 | 44.118 min=43.717@18 max=44.439@1 |
| noise | mp4 | libvpx | format+codec unsupported |
| noise | mp4 | libx264 | 44.218 min=43.870@8 max=44.730@19 |
| noise | mp4 | mjpeg | 44.374 min=44.061@2 max=44.902@0 |
| noise | mp4 | mpeg1video | 44.537 min=44.157@18 max=45.222@0 |
| noise | mp4 | mpeg2video | 44.397 min=43.834@5 max=44.825@0 |
| noise | mp4 | mpeg4 | 44.276 min=43.875@9 max=44.912@17 |
| noise | mp4 | mpegvideo | 44.339 min=43.812@2 max=45.328@0 |
| noise | mp4 | msmpeg4 | format+codec unsupported |
| noise | mp4 | msmpeg4v2 | format+codec unsupported |
| noise | mp4 | vp8 | format+codec unsupported |
| noise | mp4 | wmv1 | format+codec unsupported |
| noise | mp4 | wmv2 | format+codec unsupported |
| noise | mp4 | zlib | format+codec unsupported |
| user | avi | ffv1 | 1.463 min=1.457@5 max=1.472@7 |
| user | avi | h264 | 2.028 min=1.666@0 max=2.201@9 |
| user | avi | libvpx | 1.999 min=1.646@0 max=2.420@2 |
| user | avi | libx264 | 2.028 min=1.666@0 max=2.201@9 |
| user | avi | mjpeg | 1.197 min=1.149@6 max=1.532@0 |
| user | avi | mpeg1video | 1.760 min=1.641@1 max=2.061@0 |
| user | avi | mpeg2video | 1.882 min=1.694@3 max=2.026@0 |
| user | avi | mpeg4 | 1.960 min=1.782@1 max=2.076@9 |
| user | avi | mpegvideo | 1.882 min=1.694@3 max=2.026@0 |
| user | avi | msmpeg4 | 1.964 min=1.773@1 max=2.088@8 |
| user | avi | msmpeg4v2 | 1.921 min=1.773@1 max=2.008@9 |
| user | avi | vp8 | 1.999 min=1.646@0 max=2.420@2 |
| user | avi | wmv1 | 1.964 min=1.773@1 max=2.088@8 |
| user | avi | wmv2 | 1.958 min=1.768@1 max=2.082@8 |
| user | avi | zlib | 0.000 min=0.000@0 max=0.000@0 |
| user | mov | ffv1 | 1.463 min=1.457@5 max=1.472@7 |
| user | mov | h264 | 1.533 min=1.477@0 max=1.566@7 |
| user | mov | libvpx | 2.103 min=1.646@0 max=2.547@2 |
| user | mov | libx264 | 1.533 min=1.477@0 max=1.566@7 |
| user | mov | mjpeg | 1.197 min=1.149@6 max=1.532@0 |
| user | mov | mpeg1video | 1.760 min=1.641@1 max=2.061@0 |
| user | mov | mpeg2video | 1.882 min=1.694@3 max=2.026@0 |
| user | mov | mpeg4 | 1.960 min=1.782@1 max=2.076@9 |
| user | mov | mpegvideo | 1.882 min=1.694@3 max=2.026@0 |
| user | mov | msmpeg4 | 1.964 min=1.773@1 max=2.088@8 |
| user | mov | msmpeg4v2 | 1.921 min=1.773@1 max=2.008@9 |
| user | mov | vp8 | 2.103 min=1.646@0 max=2.547@2 |
| user | mov | wmv1 | 1.964 min=1.773@1 max=2.088@8 |
| user | mov | wmv2 | 1.958 min=1.768@1 max=2.082@8 |
| user | mov | zlib | 0.000 min=0.000@0 max=0.000@0 |
| user | mp4 | ffv1 | format+codec unsupported |
| user | mp4 | h264 | 1.533 min=1.477@0 max=1.566@7 |
| user | mp4 | libvpx | format+codec unsupported |
| user | mp4 | libx264 | 1.533 min=1.477@0 max=1.566@7 |
| user | mp4 | mjpeg | 1.197 min=1.149@6 max=1.532@0 |
| user | mp4 | mpeg1video | 1.760 min=1.641@1 max=2.061@0 |
| user | mp4 | mpeg2video | 1.882 min=1.694@3 max=2.026@0 |
| user | mp4 | mpeg4 | 1.960 min=1.782@1 max=2.076@9 |
| user | mp4 | mpegvideo | 1.882 min=1.694@3 max=2.026@0 |
| user | mp4 | msmpeg4 | format+codec unsupported |
| user | mp4 | msmpeg4v2 | format+codec unsupported |
| user | mp4 | vp8 | format+codec unsupported |
| user | mp4 | wmv1 | format+codec unsupported |
| user | mp4 | wmv2 | format+codec unsupported |
| user | mp4 | zlib | format+codec unsupported |