diff options
| -rw-r--r-- | libhb/encx264.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libhb/encx264.c b/libhb/encx264.c index fe9a11f82..270692c8a 100644 --- a/libhb/encx264.c +++ b/libhb/encx264.c @@ -88,6 +88,12 @@ int encx264Init( hb_work_object_t * w, hb_job_t * job ) /* Enable metrics */ param.analyse.b_psnr = 1; param.analyse.b_ssim = 1; + + /* QuickTime has trouble with very low QPs (resulting in visual artifacts). + * Known to affect QuickTime 7, QuickTime X and iTunes. + * Testing shows that a qpmin of 3 works. + */ + param.rc.i_qp_min = 3; param.i_threads = ( hb_get_cpu_count() * 3 / 2 ); param.i_width = job->width; |