[FFmpeg-user] Quantify Video Quality

[Jim Worrall]

On Feb 26, 2012, at 9:20 PM, Atish Kathpal wrote:

> Hello
> 
> I have a set of uncompressed videos in YUV format.
> 
> I have obtained several derived copies in various formats and resolutions
> from these yuv files using FFmpeg transcoding. (YUVs ----> X Derived Copies)
> 
> What I have also done is, transcode the yuv's into same resolution AVIs,
> and now obtained the same set of derived (transcoded) videos treat the AVIs
> as master. (AVIs ----> X Derived Copies)
> 
> Now I wish to compare the quality of transcoded videos, when derived from
> AVIs to those derived from YUVs.
> 


It is hard to imagine that the quality of the final transcoded videos
could be improved by going from an uncompressed file through some
(unspecified) codecs in an AVI first.  I would assume that the final
file made directly from the YUV is better.

To compare the quality, I would just look at a few samples.