Should set "number of frames" to bytes 24-27 of IVF header, not
duration.
It is described by [1], and confirmed by parsing all IVF files in [2].
This commit also updates the md5sum of refs to pass fate-cbs.
[1] Duck IVF - MultimediaWiki
https://wiki.multimedia.cx/index.php/Duck_IVF
[2] webm/vp8-test-vectors
https://chromium.googlesource.com/webm/vp8-test-vectors
Signed-off-by: Jianhui Dai <jianhui.j.dai@intel.com>
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Uses the same mechanism as other codecs - conformance test files are
passed through the metadata filter (which, with no options, reads the
input and writes it back) and the output verified to match the input.