Comment 10 for bug 436726

Like Fabio already said quality (-v) setting doesn't compare with theora 1.0 and theora 1.1. You should compare "quality 1 --optimized" with Theora 1.0 to something like "quality 4 (--optimized?) with Theora 1.1, get a file size relatively similar (but higher quality with 1.1).

So in other words, you cannot order 1.0 to produce something like 1.1 does with -v 1 or -v 2, so you should start 1.1 comparison from a -v N value where you get similar filesize to -v 0 or -v 1 with 1.0.

The "1.1 -V 1400 --optimize" is again wrong, as CBR is the wrong choice for anything else than streaming, and you don't get a real CBR with Theora 1.0 -V 1000 (the bitrate varies wildly, similar to using -v setting, but averages eventually on a random value of ca. 1400 in this case). So again you don't have anything produced out of Theora 1.0 you could compare 1.1's "-V xxxx" against.

In summary, Theora 1.0 is broken in many ways and does not do what you order it to do - instead it always varies the bitrate, and gives big file sizes even on the lowest quality settings.