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
Source
Own work
This W3C-unspecified plot was created with Gnuplot.
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.)
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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.
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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. )
Download the .mp4 and .webm files containing the video stream.
Removing the audio stream with ffmpeg -i %% -c:v copy -an %%_an.mp4.
Get the file sizes of the .webm and .mp4 files.
Divide: (file size of .webm)/(file size of .mp4) for each video. (Normalize with h264=100%)
Calculate average.
gnuplot: plot "./dat" using 2:xticlabel(1) with histogram.
Do some cleanup with inkscape.
Captions
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