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Adviseable fps for a text based video

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Syed Iqbal
Adviseable fps for a text based video
on May 2, 2017 at 4:58:17 pm

Hi,
My AE project has mp3 voice over file on one layers and hundreds of text layers for the 99% of the video synced to this VO file. Like the voice over goes quickly and each text layer shows different text on screen after every few seconds or so.

* What should be the most advisable fps I should keep in my composition?
* What if I want to ultimately keep the mp4 output video size as lower as possible?
* Does fps affect the final video size?

These questions have been in my mind for quite a long time and today I decided to ask here in this forum.

I would really appreciate your help.

Thanks
Syed


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Dave LaRonde
Re: Adviseable fps for a text based video
on May 2, 2017 at 5:38:59 pm
Last Edited By Dave LaRonde on May 2, 2017 at 5:40:42 pm

First off, DO NOT USE MP3 FILES IN AFTER EFFECTS!

Use Adobe Audition to convert them to wav or aiff files. There are many forms of Mp3 compression, and After Effects cannot handle several of them. It has problems with them.
It is better to be safe now than sorry later. The increased file size of uncompressed audio is tiny compared to the size of a video file.



[Syed Iqbal] "What should be the most advisable fps I should keep in my composition?"

This is something that should be established by your delivery specifications. Contact your client to find out what you should deliver.



[Syed Iqbal] "What if I want to ultimately keep the mp4 output video size as lower as possible?"

Your image quality will suffer. You need to choose if the final animation is acceptable or not.


[Syed Iqbal] "Does fps affect the final video size?"

Yes. The more frames there are every second, the larger the file size becomes.


If this was my project, I would choose the highest quality I could and at the highest frame rate I could. In NTSC countries, I would use 59.94 fps. In PAL countries I would use 50 fps. I would render my project in a quicktime movie in the JPEG 2000, Photo JPEG, or PNG codecs. From the resulting file, I would use Adobe Media Encoder to make the final file for delivery, and keep the other file for archival purposes.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Syed Iqbal
Re: Adviseable fps for a text based video
on May 2, 2017 at 6:56:25 pm

Hi Dave,
Thanks a lot for your response. I would like to clarify a few points though:

1) Video is intended for web
2) All the text layers I have in my composition have no animation whatsoever applied to them.
3) Client's only concern is that the text should be sharp and readable.
4) In my setting I have one White solid layer as background with Black text layers (using Myriad Pro font) sitting on top of BG.

Thanks again.
Syed


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Dave LaRonde
Re: Adviseable fps for a text based video
on May 2, 2017 at 8:25:34 pm

Do yourself a favor -- don't use pure white and pure black.
Use an almost-pure white background -- in 8-bit color I would use 235-236-235.
Likewise, use almost-black text, 16-16-16.

You'll probably get noise at the text edges if you compress it a lot.

Dave LaRonde
Promotion Producer
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA


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Syed Iqbal
Re: Adviseable fps for a text based video
on May 2, 2017 at 9:04:50 pm

Thanks a lot Dave. I really appreciate these additional tips from you on BG and text color.


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Bouke Vahl
Re: Adviseable fps for a text based video
on May 4, 2017 at 10:15:12 am

[Dave LaRonde] "Yes. The more frames there are every second, the larger the file size becomes."

Dave,
Not really the case with a long GOP codec like H264 or WMV.
If the image does not change (too much), the compression is VERY effective.

hth,

Bouke
http://www.videotoolshed.com


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