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M
mmorache
Participating Frequently
April 26, 2020
Question

Premiere is playing glitches that aren't there

  • April 26, 2020
  • 2 replies
  • 2807 views

I'm seeing occasional glitches in videos playing in Premiere that I don't see anywhere else. 

 

Specifically they are mxf clips encoded with the xdcam hd 35 codec. These are pre-edited clips that look perfectly clean in quicktime, and also in fcpx, however when brought into Premiere, it's showing a glitch that's not there anywhere else.

 

I had someone who has actually created encoding software take a look at it, and he said using the tools he has that he doesn't see anything wrong with the clip, but he was able to duplicate the glitch on his version of Premiere. I'm on a Mac (2018 mbp, the os and adobe CC all up to date) and my co-workers have seen the same glitch on my clip in Premiere which they run on a PC.

 

My guy says that Adobe uses it's own mxf decoder, rather than the one that's built into my mac. Could this be where my problems are stemming from? Currently I'm forced to review everything I edit by bringing it into Premiere and watching it carefully for glitches. This isn't a fun workflow.

 

Any one with similar problems? or a viable work around?

 

Thanks in advance!

 

 

This topic has been closed for replies.

2 replies

Joost van der Hoeven
Community Expert
Joost van der HoevenCommunity Expert
Community Expert
June 28, 2021

Can you please share your system info? Like OS and version, CPU, RAM, GPU vRAM, Pr version? Thanks. Also a screen grab of your issue will be helpful.

M
mmoracheAuthor
Participating Frequently
June 28, 2021

Thanks for the follow up. I actually haven't been having trouble with this for a long time, over a year, but strangely I just had this same problem the other day.

I have a clip that was edited in Final Cut Pro. It plays fine in Quicktime, and in VLC but when I play it in Premiere or Media Encoder, it has glitches.

 

I'm using PP 15.2.0 on a 2018 MBP with a 2.6Ghz 6-core Intel i7 processor, 32gb 2400 MHZ DDR4 memory, and a Radeon Pro Vega 20 GPU with 4GB of memory. I'm working with our post editor who is using the latest verson of PP on a windows PC. We both see the same glitches, so I don't expect it's the computer.

The guy who makes the Edit Ready software took a look at a previous fail, and told me he sees nothing wrong with my clip, but he saw the glitches in Premiere as well. This was a year ago. He assured me that this isn't a Final Cut Pro problem, but one with Premiere. Probably the Xdcam decoder.

 

My workaround is to export my edits in prores, then use Media Encoder to transcode to Xdcam. This is a pain, since the problem occurs so infrequently.

I have more details, and I can share the exported clip with you. It's about 900mb.

 

I'd greatly appreciate your help. 

 

hi

Kevin-Monahan
Community Manager
Kevin-MonahanCommunity Manager
Community Manager
June 29, 2021

M,

Is it looking like this in the Beta too? Let me know.

 

Kevin

Kevin Monahan - Sr. Community and Engagement Strategist – Adobe Pro Video and Audio
M
Michael Grenadier
Legend
April 27, 2020

can you explain where the clips came from.  Doesn't seem to make sense to me with the codec your clip uses, but this kind of problem is often seen when the source clip has a variable frame rate which is usually from a smart phone or screen recording program.  You can use media info to check that the frame rate is constant

https://mediaarea.net/en/MediaInfo/Download

drop one of your source clips in the media info window and hover your cursor over the video area and you'll see all the specs of the source appear and it should tell whether the frame rate is constant or variable.  If it's variable, you can use handbrake to convert to a constant frame rate

https://handbrake.fr

M
mmoracheAuthor
Participating Frequently
April 27, 2020

Thanks for the reply. That's good information, but I don't think it applies to this situation.

The clip has a constant frame rate. We are a daily local broadcast show, and we've never had problems with these edited clips that actually come out of fcp x, until we stopped posting at the tv station on the Sony Xpri software, and started posting from home on Premiere. I have a sample I can send you a link to.

 

It just seems strange to me that this clip looks fine in so many different platforms but shows a glitch when played in Premiere.

 

The information I get on the clip is:

Type: MXF File

Size: 31.15 MB Image Size: 1440 x 1080

Frame Rate: 29.97

Source Audio Format: 48000 Hz - 16-bit - 4 Channels

Project Audio Format: 48000 Hz - 32 bit floating point - 4 Channels

Total Duration: 00:00:08:19

Pixel Aspect Ratio: 1.3333

Alpha: None

MXF File details: Wrapper type: MXF OP1a (type: SingleItem SinglePackage MultiTrack Stream Internal)

File generated by: Apple Inc., Final Cut Pro X (10.4.8 (358560)) MPEG-2 420 MPHL

M
Michael Grenadier
Legend
June 28, 2021

Did you ever get this resolved? Facing the exact same issue.


Please tell us your system specs: OS version, Premiere version, amount of RAM, Hardware specs including graphics card and your source properties and sequence settings.

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