Summary edit

DescriptionVP8 vs h264 (file size).svg	Deutsch: Vergleich der Dateigrößen/Bitraten der beiden Videocodecs VP8 und h264: Man erkennt, dass VP8 in der Regel 21% mehr Speicherplatz verbraucht, als h264.
Date	20 February 2013, 02:01:35
Source	Own work   This W3C-unspecified plot was created with Gnuplot.   This W3C-unspecified vector image was created with Inkscape .
Author	McZusatz
Permission (Reusing this file)	If you use one of my uploads outside of the wikimedia projects a message or (if available) a specimen copy would be greatly appreciated. This is not mandatory and you can use my files under the provided license. If you are embedding this file online, I would favor the following credit line: CC-BY-SA-3.0 (A link to this site while mentioning the License the file was published under.)
Attribution (required by the license) InfoField	CC-BY-SA-3.0
InfoField

Licensing edit

I, the copyright holder of this work, hereby publish it under the following license:

This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.

Attribution: CC-BY-SA-3.0 via https://commons.wikimedia.org/wiki/File:VP8_vs_h264_(file_size).svg

You are free:

• to share – to copy, distribute and transmit the work
• to remix – to adapt the work

Under the following conditions:

• attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
• share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.

https://creativecommons.org/licenses/by-sa/3.0CC BY-SA 3.0 Creative Commons Attribution-Share Alike 3.0 truetrue

Creation edit

1. Uploaded files from http://media.xiph.org/video/derf/y4m/ReadMe_1080p.txt to YouTube. (They provide a good encoding to VP8 and H264. I know there are no encoding settings provided by YouTube and it is difficult not to cheat on codec comparisons but one can assume that YouTube tries hard to ensure that the quality of both transcodes is as equal as possible. )
2. Download the .mp4 and .webm files containing the video stream.
3. Removing the audio stream with ffmpeg -i %% -c:v copy -an %%_an.mp4.
4. Get the file sizes of the .webm and .mp4 files.
5. Divide: (file size of .webm)/(file size of .mp4) for each video. (Normalize with h264=100%)
6. Calculate average.
7. gnuplot: plot "./dat" using 2:xticlabel(1) with histogram.
8. Do some cleanup with inkscape.