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Old 03-25-2013, 04:59 AM   #1
jamesblue
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Video playback and RAM


Does RAM have any impact on playing video?

On a computer with a poor CPU, can anything be done with the system's RAM to compensate?

Or can anything be done, at all, to make video play more smoothly?
 
Old 03-25-2013, 05:02 AM   #2
whizje
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You could get a video card with hardware support for video.
 
Old 03-25-2013, 05:53 AM   #3
jamesblue
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Quote:
Originally Posted by whizje View Post
You could get a video card with hardware support for video.
I forgot to mention that the machine is infact a notebook computer, and doesnt appear to have any expansion slots that would take a video card.
 
Old 03-25-2013, 05:54 AM   #4
H_TeXMeX_H
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As whizje suggests, the biggest impact on video playing ability is the GPU ... and often the most expensive. Next would be the CPU, and finally the RAM. However, unless you can see that you are running out of RAM, it will not have a major effect on your video playing ability.
 
Old 03-25-2013, 08:04 AM   #5
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If you have 2 memory slots and only one is occupied performance might improve if you place a identical sized memory module in the second slot. if the processor and main board support interleaving. Some applications benefit a lot others minimal. You could search if your laptop supports memory interleaving.
 
Old 03-25-2013, 08:12 AM   #6
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What's your CPU? RAM? GPU? Operating system? Format of the video?

The more details you give us, the better answer we can give you.
 
Old 03-25-2013, 05:07 PM   #7
jamesblue
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Its an Asus Eeepc 901 (http://www.eee-901.co.uk/eee901-specs.htm)

Its fairly basic, it has a 1.6GHz atom, 1GB DDR2 Ram, integrated Intel GMA 950 graphics. I'll be installing Slackware on there (I havent got it with me at the moment).

As for which types of video it doesnt play, pretty much any of the most recent encodes I was just wondering if I could squeeze a little bit more out of it.
 
Old 03-25-2013, 05:36 PM   #8
Emerson
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Intel has VA API. http://en.wikipedia.org/wiki/Video_Acceleration_API
 
Old 03-25-2013, 05:38 PM   #9
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I have an Asus EEE 900ha, similar hardware specs. In my experience, it can play up to 480p from the local hard drive reasonably well (some minor tearing). Forget about 720p or streaming flash. YMMV.

(edit) I should add that I often use a 1600x900 external monitor for video-watching.

Last edited by snowpine; 03-25-2013 at 05:47 PM.
 
Old 03-25-2013, 08:47 PM   #10
jefro
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The main issue with the Atom class is how video really works. On some of those you can by a hardware decoder if it has a pci-e slot but that would be it. Intel was in a spat with video supplier and they borked the Atom so that it can't do much. It is the way the video connects to the processor. It can't handle decoding video in gpu. It has to use cpu and cpu has to wait for gpu to do it's tasks. Just a bad design because of licensing.

Intel may have fixed the latest chip but they don't seem to want to market it to home users. They want some big set top box company to use it. Won't happen at their prices.

Last edited by jefro; 03-25-2013 at 08:49 PM.
 
Old 03-27-2013, 08:29 PM   #11
teckk
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Quote:
Or can anything be done, at all, to make video play more smoothly?
If your media player allows, you can play the video with frame dropping or low resolution.

Examples:
For mpeg 2 and 4
Code:
mplayer -lavdopts lowres=1 -vfm ffmpeg video.mp4
For H264
Code:
mplayer -lavdopts skiploopfilter=all video.mp4
For .flv files
Code:
mplayer ffmpeg://video.flv
Also look at -framedrop, -hardframedrop
 
Old 03-28-2013, 03:39 AM   #12
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Try this for x264 and other codecs that support threading:

Code:
mplayer -vo xv -af volnorm=1 -subfont-autoscale 1 -lavdopts threads=2 -idx video.mkv

Last edited by H_TeXMeX_H; 03-28-2013 at 03:42 AM.
 
  


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