whipstein

Results 2 issues of whipstein

Here's the redo of the pull request. Removing kill_on_drop(true) did the trick. If you add "--vmaf log_fmt=json --vmaf log_path=" to the vmaf command, it will properly write the VMAF log...

I've been able to implement the use of Videotoolbox hardware encoding. But it uses either constant bitrate or constant quality as a metric for encoding. Just using the existing code...