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Question

Custom 5240x1080 resolution

Forum|Forum|9 years ago
November 29, 2016
8 replies
2065 views

Dear Premiere Pros,

I need to make a presentation of 9+ 5240x1080px panoramic stills (30-50MB TIFF each) for a projector that projects 5240x1080px, on a 20m x 4m screen. This projector works off a software that can't be operated once it starts (ie. no buttons to press), meaning I can't leave them as still photographs to be transitioned with mouseclick/button press. I'll need to make it a video of 9 stills, each 5 mins with a simple transition in between.

So far, trying to File > Export > Media > Match Sequence Settings allows me to export a QuickTime format NTSC DV Widescreen at 5240 x 1080. However, the resultant file is 7GB for a test video that is 12 secs long. What's more, when I play this 12 seconds 7GB video on my computer, it's a blank screen.

Does anyone know the best way to go about this? If its the same frame that the video contains, doesn't that mean the file size shouldn't be too much bigger than the original still?

Thanks!

This topic has been closed for replies.

jasontcox

Inspiring

As discussed above, you probably want to choose H.264 as your codec unless the client requests otherwise. And the aspect ratio is already set by the resolution. 5240/1080 = 4:85:1

D

dariusneo

Participant

Hi Jason, thanks for the fast response! i just started premiere pro, pardon my noobness i see that in sequence settings there's this Pixel Aspect Ratio, should i stick to Square?

jasontcox

Inspiring

I'd say the answer to that is prooooobably 99.9% yes. Unless the system your sending to is weird/old lol.

D

dariusneo

Participant

hiii im also needed to export my video in 5240x1080. may i know which codec do you use and what aspect ratio?

jasontcox

Inspiring

Glad I could help!

L

lenn16753817Author

Participating Frequently

it did, thanks jason!

jasontcox

Inspiring

Hi Lenn

Sorry I didnt get back to this sooner. Making progress though, I see. 29.97fps is probably a safe bet so Id stick with that. And the .mp4 makes total sense too. I think your only remaining issue is file size and quality. Here is some CRAZY math. If I'm simplifying, one of the greatest factors in quality is the bit rate which is measured in mbps (megabits per second.. NOT megabytes per second). There are 8 megabits in a megabyte (this is important lol). That means 1GB = 1,000 megabytes = 8,000 megabits. Let's say your video is 20 minutes long. 60 seconds x 20 is 1200 seconds. 8,000/1200= 6.7. That means you can set a max quality of 6.7 mbps and still stay under 1GB in file size. You CAN control this in Premiere's export window.

Format: H.264

Preset: Match Sequence - High Bitrate

Then, in the video tab below scroll down till you see the sliders for Target and Maximum Bit rate. Set the Maximum to 6.5 and maybe the Target to 5 or so. Hopefully the Estimated file size should be very close to 1GB. Remember, this is assuming a 20 minute video. Now whether or not that will end up looking GOOD is another question. Most people would say this is too low of a bit rate setting for 4K. But the good news is A) these are still photos, not moving video which will help immensely and B) people will be far away from the projector which helps make it harder to notice quality concerns.

Hope that helps!

L

lenn16753817Author

Participating Frequently

Hi all, thanks for your invaluable help so far.

I've met with the people in charge of the projector.

1. They don't know what frame rate is compatible with the projector

2. They say the file has to be MP4

3. They say the file needs to be <1GB

4. They usually take 4k videos and stretch it to fit the 5240x1080px

5. They say the usual videos they play are 10-18min long (can a 4k 10-18min long video really be <1GB?)

In light of this recent info, I've tried to shorten my video content, and export as MP4. With just a trial clip of 5 seconds, when I click File > Export > Media > Format: H.264 > Preset: Custom > Basic Video Settings - Match source, it produces a 4096 x 844, frame rate 29.97 video that is 8MB. Is there a better setting to preserve the original still image picture quality? If I use these settings and make a 20 minute long video that is possible <1GB, will the quality be good enough to project onto a screen 20 metres by 4 metres?

Thanks in advance.

jasontcox

Inspiring

Chances are, you're NOT going to want to use the "Match Sequence Settings" box in the Export dialog. I'd like to say most modern equipment can and should play the H.264 format (which will give you a smaller file size too), but since this is a pretty unique projector with apparently unique software, as Meg said, you want to double check what video specifications that hardware/software might have.

R

Richard M Knight

Community Expert

Do you know what frame rate the projector needs?

L

lenn16753817Author

Participating Frequently

I'm not too sure about that, and will clarify. But let's say the standard movies played are 30 fps, do you have advice based on that? How does it change the process (apart from setting the correct fps during exporting)?

Thanks for your help btw!

M

Meg The Dog

Inspiring

You need to find out what kind of file, and the specifications for that file, that the projector expects to see. Once you have that, you can work from that information to configure the export from Premiere to match.

Does anyone know the best way to go about this? If its the same frame that the video contains, doesn't that mean the file size shouldn't be too much bigger than the original still?

That's not the way video works. In the case of 29.97 fps, you'll have 29.97 individual stills per second. So you can expect the end file size to be much greater.

How much greater will be determined by the codec the projector wants to see the file in.

MtD

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