.. vim: set fileencoding=utf-8 :
.. Andre Anjos <andre.anjos@idiap.ch>
.. Wed 20 Mar 2013 11:30:02 CET
..
.. Copyright (C) 2011-2014 Idiap Research Institute, Martigny, Switzerland
=============================
Using Videos with |project|
=============================
Video read and write support in |project| uses FFmpeg_ as implementation
backend. In Ubuntu-based distributions, FFmpeg_ was replaced by libav_, which
is a fork based on FFmpeg_ version 0.8. |project| 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. |project| 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 |project| is available, codecs, in particular may be
disabled by compilation options on FFmpeg_ or libav_, in which case |project|
builds will not be able to use them.
.. note::
Currently, |project| 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 |project|.
Codec and Format Availability
-----------------------------
To get a list of all FFmpeg_ (or libav_) supported formats for a given build of
|project|, use the ``bob_video_test.py`` application:
.. code-block:: sh
$ 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 |project| use
another set of command-line options:
.. code-block:: sh
$ 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:
.. code-block:: sh
$ 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:
.. code-block:: text
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 |project| 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:
.. code-block:: sh
$ 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:
.. code-block:: sh
# 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.
$ xbob_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
|project|. To know which formats support each codec, you can execute the
following python code:
.. code-block:: python
import xbob.io
xbob.io.supported_videowriter_formats()['mp4']['supported_codecs'].keys()
['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 |project|, 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
``xbob_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 ``xbob_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 |project| 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:
.. code-block:: sh
$ xbob_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
=========== ===== ================== ========================================
.. include:: links.rst
.. Place here your external references