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Autoselect number of columns to use for VP9

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Steven Robertson 2015-02-14 17:50:03 -08:00
parent e08444f74b
commit 8dc629d91e
1 changed files with 4 additions and 0 deletions
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4
cuburn/output.py
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@ -284,6 +284,10 @@ class VPxOutput(Output, ClsMod):
def _spawn(self):
extras = ['-w', self.dim.w, '-h', self.dim.h]
num_columns = int(max(0, min(3, np.log2(self.dim.w) - 8.9)))
if num_columns:
extras.append('--tile-columns=%d' % num_columns)
self.outf = tempfile.TemporaryFile(bufsize=0)
self.subp = Popen(map(str, self.args + extras),
stdin=PIPE, stderr=PIPE, stdout=self.outf)