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Improve positioning accuracy with Mark In and Mark Out
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Please could you improve the Mark IN and Mark Out in the videos, they are totally imprecise.
It is necessary to place exact player points, but currently it is impossible since
the player from the marked points moves and the player is inaccurate.
Please make it work similar to the positioning that REPLAY has, which is precise frame by frame.
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Originally Posted by: JAIRODJ  Please could you improve the Mark IN and Mark Out in the videos, they are totally imprecise.
It is necessary to place exact player points, but currently it is impossible since
the player from the marked points moves and the player is inaccurate.
Please make it work similar to the positioning that REPLAY has, which is precise frame by frame. +1 ....I hate when I mark an in/out point, just to see the slider jump forward a few times...plus it seems very difficult to set an exact in/out point quickly......I have speeches, sometimes music, and can not get them to start or end accurately, and it drives me up a wall....when time is on my side, I use my video editor to make an accurate clip....but at times, I am doing it on the fly, and it kills my spirit....
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@ JAIRODJ & Joeboe
I suspect your videos are MP4, is that correct?
Unfortunately, vMix has no control over the accuracy of the frame for the MarkIn and MarkOut points on such videos as the format does not allow for pin point accuracy and will instead jump to the nearest keyframe in the code.
Ice
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Originally Posted by: IceStream @ JAIRODJ & Joeboe
I suspect your videos are MP4, is that correct?
Unfortunately, vMix has no control over the accuracy of the frame for the MarkIn and MarkOut points on such videos as the format does not allow for pin point accuracy and will instead jump to the nearest keyframe in the code.
Ice Hi Ice, If we can't control that, I'm wondering how Adobe Premiere can did that precisely on Windows? We can drag the playhead to the exactly frame that we want. Thanks in advance.
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Premiere is an editing software, not a live software. So first, the medium is imported and converted to I-frame. With a live software, this would take far too long, because you want to pull in your clip and play it back. Try to record a file with the AVI codec from vMix, this can be moved frame by frame. MP4 files normally only have a full frame every second, all frames in between only represent the changes of the full frame. This is called GOP (group of files)
so, if you need to position frame-wise, change the record format. If you are still unsure, google the terms i-Frame and GOP.
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@Peter1000
There is the Atomix Virtual Dj program with which audio and video are mixed,
in this software you can add several CUE points and they are exact,
that means that if the technology exists, then vmix can also do the same. They just need to improve it.
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But in Virtual DJ you can't have 100 videos ready to play instantly - at least when I used it (I think about 8 years ago) it took a moment to load the track into the buffer so as it could than be jumped around.
If you want to start playing the video from a non I-frame then vMix needs to find the previous I-frame and decode all the video from there to the point you have picked. With typical I-frame intervals of 1 every 2 seconds, on average that would be 1 second of video to decode. If you are hot cutting to an input I can't see vMix having time to do that.
If you are cutting via Preview then vMix could play from the I-frame to the marked in point - but I feel it could be confusing if you preview a video and a moment later it plays for a second or jumps to a new frame. But maybe you could post that option in the feature request section.
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or search and find an earlier Feature Request for this ;)
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