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Old 05-08-2017, 05:08 AM   #1
petrofsky
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Default Item snap to grid inaccuracy (Recipe reproduced)

When recording or "render to" there are shifts in item position on grid as shown on pictures. It can be seen at the closest zoom. This happens when project tempo is not default (120 bpm). Item shift depends on bar position and sometimes it's behind the bar, sometimes it's ahead of the bar, and sometimes it's on point. I reproduced it on several computers in newest and older Reaper 5 versions. I attached a gif recipe in zip (it couldn't be compressed to 64 KB).
Tried on:
Macbook Pro Retina 2014
Macbook Air 2013
Mac Pro
Attached Images
File Type: jpg Recording-snap-inaccuracy-2.jpg (20.9 KB, 487 views)
File Type: jpg Recording-snap-inaccuracy-1.jpg (20.3 KB, 531 views)
Attached Files
File Type: zip reaper bug.gif.zip (456.8 KB, 232 views)
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Old 05-08-2017, 05:12 AM   #2
EvilDragon
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Looks like relative snap is enabled?
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Old 05-08-2017, 05:16 AM   #3
petrofsky
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Quote:
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Looks like relative snap is enabled?
No, it is off.
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Old 05-08-2017, 05:29 AM   #4
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Snap to sample rate then?


I cannot confirm that happening here.
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Old 05-08-2017, 05:37 AM   #5
petrofsky
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Snap to sample rate then?


I cannot confirm that happening here.
No, it's snap to beat position. You can recreate it as in gif and you will see it. Sometimes it's on point, just try to do it several times with random bpm positions.
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Old 05-08-2017, 05:44 AM   #6
schwa
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Recorded items are rounded to the nearest audio sample. This includes MIDI recordings, for playback sync reasons.
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Old 05-08-2017, 05:58 AM   #7
petrofsky
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Quote:
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Recorded items are rounded to the nearest audio sample. This includes MIDI recordings, for playback sync reasons.
But these shifts cause timing problems by the end of the project if I don't manually correct the timing of individual recorded or rendered in place items. I haven't seen any other DAW behaving in such way. How can I turn off this rounding?
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Old 05-08-2017, 06:18 AM   #8
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Quote:
Originally Posted by schwa View Post
Recorded items are rounded to the nearest audio sample. This includes MIDI recordings, for playback sync reasons.
Schwa-there seems to be problems because editing can be intersample.
For eg,playhead will scrub many places between samples->X# numbers of markers can be placed between samples.
General edge editing must be locked to samples right?
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Old 05-09-2017, 02:43 PM   #9
petrofsky
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So does anybody have any suggestions? Can someone please explain why items are slightly off the grid after recording but if draw items manually this doesn't happen? Even if recorded items are rounded to nearest sample for playback sync reasons, after recording it would be logical for items to snap to grid automatically, without having user manually correct each item on the highest zoom resolution.
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