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Frame Issues (Skipping Frames, Wrong Frames, etc.)

DrFontane

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I'm re-cutting The Hobbit into two films and while I'm editing and exporting the first part, I'm experiencing the most bizarre problem. The source file, sequence clip (and export) are all 23,96fps mp4 and I'm editing with Adobe Premiere Pro.

Ambivalent frames: Sometimes Premiere seems unsure which frame is supposed to be at a particular spot. I'll place myself on a particular frame (like the end of a shot) and it'll first show the next frame but then switch to showing the previous one (or perhaps it's the other way around). If I export it, sometimes it adds one frame of the wrong shot, sometimes it doesn't. Should I always cut an extra frame to be safe?

Jittery motion: Sometimes, usually when the shot is short or reversed (same speed), it'll jitter (like it skips ahead and then moves back to the previous frame, skipping ahead and so on). When I'm in my timeline, it's usually in the same spots, but it depends on how far back I start to watch the video. However, in the export, the same problem can creep in.

Is there anyone who can help me with this? That would be ever so kind.
 

TV's Frink

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I've moved the thread to a more appropriate location, and also made your title more relevant to the issue at hand.

I use Vegas, not Premiere, but I can tell you that I always cut an extra frame on either side when at the end of a shot/start of a new shot. If I don't do that, I get flash frames (a single stray frame from the shot I tried to cut out). It's annoying but cutting the extra frame seems to always work. That may fix your first problem. Not sure what is causing the second.
 

Captain Khajiit

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Are you converting your sources to an intermediary codec (such as Lagarith) for editing?
 

TM2YC

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TV's Frink said:
I always cut an extra frame on either side when at the end of a shot/start of a new shot. If I don't do that, I get flash frames

I used to do this when working with DVD material but I've never done it with 23.976023 BR stuff. I'm always 100% confident there'll be no flash frames. So not sure why DrFontane is getting this issue.

DrFontane, could you post a screen capture of your project-settings, or whatever it's called in Premiere.
 

TV's Frink

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TM2YC said:
I used to do this when working with DVD material but I've never done it with 23.976023 BR stuff. I'm always 100% confident there'll be no flash frames. So not sure why DrFontane is getting this issue.

Where did he say he's working with HD?
 

DrFontane

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TM2YC said:
I used to do this when working with DVD material but I've never done it with 23.976023 BR stuff. I'm always 100% confident there'll be no flash frames. So not sure why DrFontane is getting this issue.

DrFontane, could you post a screen capture of your project-settings, or whatever it's called in Premiere.

sequence_settings.jpg


Captain Khajiit: For previews, yes. If that's not what you mean, i don't know what you mean with intermediate codec.

@TV Frink: I am editing in HD.
 

DrFontane

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TM2YC said:
I used to do this when working with DVD material but I've never done it with 23.976023 BR stuff. I'm always 100% confident there'll be no flash frames. So not sure why DrFontane is getting this issue.

DrFontane, could you post a screen capture of your project-settings, or whatever it's called in Premiere.
sequence_settings.jpg


Though I've since changed 24fps Timecode to "Frames", not sure if that does anything to my exports though.
[MENTION=8139]Captain Khajiit[/MENTION]: For previews, yes. If that's not what you mean, i don't know what you mean with intermediate codec.

@TV Frink: I am editing in HD.
 

Captain Khajiit

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DrFontane said:
If that's not what you mean, i don't know what you mean with intermediate codec.

Editing video in the highly compressed form in which it is found on disc is rarely a good idea, so people usually convert it to something else (an intermediary). Please outline your current workflow.

On another note, check the frame-rate of your video. While it is possible for BDs to be true 24fps, they are more commonly 23.976fps; there should be an option for this in Premiere.
 

TM2YC

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TV's Frink said:
Where did he say he's working with HD?

From the 23.97 framerate I just assumed that. Not always the case you are right.

TM2YC said:
DrFontane, could you post a screen capture of your project-settings, or whatever it's called in Premiere.

Please?
 

TV's Frink

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TM2YC said:
From the 23.97 framerate I just assumed that. Not always the case you are right.

Lucky guess. :p
 

DrFontane

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My source-material has been compressed, though i'm not sure by which codec as I didn't do that part myself.

I did post my project settings, here they are again. Is this not what you meant?

sequence_settings.jpg
 

TM2YC

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DrFontane said:
i'm not sure by which codec as I didn't do that part myself.

Who did then?

...and the image-link you've been posting is broken/invisible.
 

DrFontane

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I'm sorry for the late reply. Here are the sequence settings again:
KnM6sma.png

or:
The intermediary codec is x264 L4.0

I've been able to track down the flash-frames to remove them, but the image is still jittery in certain places.
 

TMBTM

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With my old premiere Pro CS3 I often had problems of frame rate when importing some videos. Most of the time with codecs other than lossless.
Let's say you project is 23,976 fps and the video your are importing is also 23,976 fps: sometimes (I don't know why) Premiere Pro imported it as 23,98 fps. If it's the case, then go in the properties of the video and change the frame rate to 23,976 and press enter (and even if the number visualy switch back to 23,98 it should be okay...)
 
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