FORUMS: list search recent posts

1920x1080 compression settings for desktop playback

COW Forums : Compression Techniques

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Dan Quintero
1920x1080 compression settings for desktop playback
on Nov 12, 2010 at 7:03:57 pm

I tried searching around for an answer to this but haven't been able to find anything.

I'm trying to compress a 20min 1920x1080 video clip that will be used as a looping display and played off a mac mini (2.66Ghz, 2GB ram). I rendered out a Apple Pro Res (1920x1080, 30p, 48Khz) Quicktime from FCP, which looked pretty good, but there were some minor glitches which I'm guessing are from the computer trying to playback the video. After that, I rendered out a H264 with a data rate of 8000 and it looked horrible. Then, I rendered out a DVCPROHD 1080p30 quicktime form FCP but when I dropped it onto the Mac Mini it wasn't able to read it (codec issue).

Anyone have any suggestions as to what would be the best compression settings for a HD video (1920x1080) that'll be played back with Quicktime on a Mac Mini?

Thanks.

Go fly fishing.


Return to posts index

Jason Brown
Re: 1920x1080 compression settings for desktop playback
on Nov 12, 2010 at 8:05:48 pm

I'm surprised that h264 @ 8Mbps looked horrible. Granted, thats the same bitrate that SD DVD usually runs at, but I routinely work in 8-12 Mbps and they look completely fine. I'd be more interested in how you "exported" that file?

Did you try to up the bitrate to something closer to Blu-ray numbers? 12-20Mbps?


Return to posts index

Dan Quintero
Re: 1920x1080 compression settings for desktop playback
on Nov 12, 2010 at 9:23:36 pm

Exported from FCP...

Quicktime conversion...
H264
Frame Rate: Current
Key Frame: All
Limit Data Rate: 8000
Size: 1920x1080
Render: Better

Sound: ACC...

Tried 12000, and it definetly looked better, but still had grain in the dark areas. Would something like 15000 still play without glitches?

Go fly fishing.


Return to posts index


Chris Blair
Re: 1920x1080 compression settings for desktop playback
on Nov 13, 2010 at 12:00:04 am

Not sure if it's an option, but we use Cineform codecs for HD stuff and they'll play on almost anything. The codecs are a little pricey but they're worth it if you need really small file sizes and virtually transparent compression. I literally can't tell the difference between an uncompressed HD file and a cineform compressed one that's less than a tenth the size...and that's in scenes with animated gradients and heavy graphics, which usually suffer quite a bit.

I'm surprised ProRes won't play smoothly as it's a similar codec in terms of how it compresses and is decoded.

Chris Blair
Magnetic Image, Inc.
Evansville, IN
http://www.videomi.com
Read our blog http://www.videomi.com/blog


Return to posts index

Daniel Low
Re: 1920x1080 compression settings for desktop playback
on Nov 14, 2010 at 10:41:09 pm

Do not use Export to Quicktime. Use compressor.

__________________________________________________________________
Sent from my iPad Nano.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]