Rendering Not Matching What I see in Timeline/Monitor

prejto wrote on 11/22/2022, 9:21 PM

Hello, I know I'm behind the times using ver 13 but it still suits my needs.

I've run into a surprising issue that I don't know how to solve. I have a 854x480 video 59.940 fps that has some line artifacts that appear randomly in the video over two frames. I have placed a jpeg lasting 2 frames (edited to remove the line error) on top of the actual video. When I play the timeline the line errors are completely removed. However, when I render the video to mp4 using Sony AVC/MVC at 59.940 only some of the lines are removed. Also, on some experimental clips I have noted that the original video is 38 sec 15 frames and the render is 38 sec 14 frames. This seems odd. Also, if I drag the jpeg to cover 3 or 4 frames it may or may not remove the line in the render. I cannot figure out why this works sometimes and not other times - this partial solution should be unnecessary.

Thanks in advance for any ideas!

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Comments

john_dennis wrote on 11/24/2022, 3:09 PM

Assuming the frame before the defect is good and more or less equal to the defective frame except for the defect.

The Velocity Envelope at 0 holds the good frame until the Velocity Envelope returns to 100% after the defective frame. Instead of patching the bad frame, you use the preceding frame.

prejto wrote on 11/24/2022, 4:07 PM

Thanks John, I think I understand now. Just to confirm that this is what I would do.

1. Split the video after the bad frame. 2. Place the cursor on the frame before the defect 3. Set that frame to velocity = 0 Done? Hopefully the video won’t be too jerky!

jetdv wrote on 11/25/2022, 8:12 AM

As I previously indicated (but I just used the "Freeze Frame option found in the newer versions). Manually set the two points on the velocity envelope.

prejto wrote on 11/25/2022, 1:44 PM

Thank you jetdv. All clear now. I will try this out ASAP!