On Thu, 27 Feb 2014, [email protected] wrote:
From: Jan Ehrhardt <[email protected]>
qt-faststart is terribly slow when the input file and the output file
are on a slow disk like a SD card. By increasing the copy_buffer from
1K to 32M I decreased the processing time on a sample file from
1600 seconds to 4 seconds. The timing difference is during 'copying
rest of file'.
Increasing the internal buffer size to 32 MB is overkill IMO. Yes 1 KB is
a little small, that could be increased, but 32 MB is way too much,
especially for such a fringe use case on a file system with all caches
disabled.
// Martin
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