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  #1  
Old 09-05-2007, 05:45 AM
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Default WinFF 16:9 and 4:3 explanations?

I find WinFF to be the best (for me) tool to encode videos for my Sansa.
However i wanted a clarification and some input about your settings for less lagging/skipping/jerking of the video.

So which method for you is better for videos?
16:9? And what fps?
4:3? what fps?
Or you don't override the fps, you just stick with the .xml preset?
Would love to see your settings.
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  #2  
Old 09-05-2007, 11:17 AM
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Assuming you want to use the largest amount of Sansa LCD space, you should use 15fps for 4:3, and 24fps for 16:9. 15fps / 4:3 should be lag-free, but 24fps / 16:9 might have an occasional lag (audio / video loses sync for a moment). 15fps will look a little jerky, but there's really no way around that.

you can bump the fps numbers up to 30fps, but only if you reduce the screen size (i.e. 160x128 instead of the standard 220x176). So, it depends on your preference.

Cheers, Brian
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  #3  
Old 09-05-2007, 11:39 AM
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Thanks roebeet.

Very useful information, didn't knew that before.
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  #4  
Old 09-05-2007, 03:59 PM
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I checked the presets file for WinFF and found that the 4:3 and 16:9 have the same settings so it does not matter which one you click
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  #5  
Old 09-05-2007, 04:46 PM
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It does actually. When i encode a video in 16:9 (without overriding the other settings) the video doesn't jerk (almost) at all.
While with 4:3 it appears laggy and jerky.
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  #6  
Old 09-05-2007, 06:18 PM
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WinFF preset for Sansa 4:3 is 224x176 (full screen), but preset for Sansa 16:9 is 224x128 (black bars on top / bottom). The best "standard fps" that current Rockbox can handle at these resolutions are 15fps for 4:3, and 24fps for 16:9.

If I try 29.97fps on either preset (which I think is the default setting), my Sansa video will freeze up and the audio will go out of sync / re-sync (4:3 mode being worse, due to the increased resolution). 24fps / 16:9 doesn't look bad, as that's the same framerate as film. But 15fps / 4:3 will look a little "jerky", but that's expected at that framerate. 15fps 4:3 is still much more visually appealing than trying the default fps.

btw, all I change with the WinFF Sansa presets are the framerates (15 or 24, for 4:3 or 16:9, respectively).

Brian
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Old 09-11-2007, 03:37 AM
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go to the Rockbox site and it tells you to replace the .xml file with the one they give you...after that the 16:9 and 4:3 will be diff and all the setting are perfect with no laggin or anything(except on very large movies)

16:9=wide screen(u turn your sansa side ways)
4:3 normal view
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Old 09-12-2007, 09:05 AM
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Some updates:
With the new Video improvements for Sansa, i've tried video with 16:9 with 30fps, and it shows great. No jerking, sync is great also.
When enabled Display FPS, it goes up to 29.9.

Will do some tests with 4:3 later.
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  #9  
Old 09-12-2007, 10:38 AM
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Wow, really good news. Remember the guy who said on the Rockbox forum that the CPU of the Sansa is capable of 30 FPS? He was right!
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  #10  
Old 09-15-2007, 09:23 PM
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I use Mediacoder at 10 fps to make the video smooth and I also set the cropping on "Expand to fit" to make 16:9 aspect ratio movies look good
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Old 09-17-2007, 11:09 AM
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Quote:
Originally Posted by Jeton View Post
Some updates:
With the new Video improvements for Sansa, i've tried video with 16:9 with 30fps, and it shows great. No jerking, sync is great also.
When enabled Display FPS, it goes up to 29.9.

Will do some tests with 4:3 later.
I just tried the latest chrisjs build and I'm still maxing out at 18fps for 220x176 / 4:3 (I'll have to test 16:9 later, or maybe a clean Rockbox build). If anyone has gotten 24 or 30fps working for 220x176 4:3 mode, I'd love to know how you did it.

Thanks, Brian
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  #12  
Old 09-17-2007, 12:36 PM
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Quote:
Originally Posted by roebeet View Post
If anyone has gotten 24 or 30fps working for 220x176 4:3 mode, I'd love to know how you did it.
I would love to know that as well, although I doubt it that it's possible at the moment.
But 16:9 with 30fps looks great!
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  #13  
Old 09-17-2007, 04:31 PM
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Ive been encoding video podcasts at 24 using winff. It looks good on my sansa, but i havent tried actual movie content. I noticed that playback starts out at about 15-20fps and works up to 24fps.
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  #14  
Old 09-17-2007, 05:07 PM
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24fps with 4:3 mode?

And the video appears smooth/normal? I mean it doesn't appear jerky at all?
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Old 09-17-2007, 05:24 PM
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Quote:
Originally Posted by Jeton View Post
24fps with 4:3 mode?

And the video appears smooth/normal? I mean it doesn't appear jerky at all?
yes, and it looks fine to me. It looks better than 15fps, and I dont have sync problems like i did when i used the default 30fps. Winff says it is encoding at 23.98fps. Like I said earlier though, these are just video podcasts, i.e. dl.tv and cranky geeks, so I assume they arent as taxing as movies would be. If i turn on the fps indicator it starts at 15-20 fps and slowly climbs to 24. Sometimes there is a little jerking at first, but it smooths out.
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  #16  
Old 09-17-2007, 06:46 PM
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Thanks for sharing the info. I will experiment with some TV shows at 24fps in 4:3 mode.
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  #17  
Old 09-17-2007, 09:31 PM
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Default OK

I encoded this video with 24fsp in 4:3 mode and I watched the documentary on my Sansa. The video looked normal and I didn't notice any jerking (visible at least, as with previous videos encoded this way).

My conclusion is that I can finally watch HEROES on my Sansa.
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  #18  
Old 03-15-2008, 05:37 PM
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This forum helped me out lots. Thanks!
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  #19  
Old 03-15-2008, 08:08 PM
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Quote:
Originally Posted by Jeton View Post
I encoded this video with 24fsp in 4:3 mode and I watched the documentary on my Sansa. The video looked normal and I didn't notice any jerking (visible at least, as with previous videos encoded this way).

My conclusion is that I can finally watch HEROES on my Sansa.
I realize that there have been substantial improvements to Rockbox since this last post, but I just wanted to add my 2 cents...

I've been encoding lots of TV shows using WinFF and the custom presets file for a couple of months now...Seinfeld, Smallville, ECW Wrestling, movies etc., and have been very impressed using the 23.98 fps at 4:3 mode. No frame dropping, syncing problems whatsoever. And it doesn't matter what file I drop into WinFF it does the conversion effortlessly. Can't say enough about it and makes me love my e260 even more!!
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  #20  
Old 03-16-2008, 10:50 PM
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Quote:
Originally Posted by sansaguy View Post
I realize that there have been substantial improvements to Rockbox since this last post, but I just wanted to add my 2 cents...

I've been encoding lots of TV shows using WinFF and the custom presets file for a couple of months now...Seinfeld, Smallville, ECW Wrestling, movies etc., and have been very impressed using the 23.98 fps at 4:3 mode. No frame dropping, syncing problems whatsoever. And it doesn't matter what file I drop into WinFF it does the conversion effortlessly. Can't say enough about it and makes me love my e260 even more!!
http://www.rockbox.org/twiki/bin/vie...er#Performance, in case anyone is interested. I've noticed that the E200 fps numbers have risen dramatically, since my last post in this thread. I have a Gigabeat F that I use for Rockbox video now, but I'll take another look at my Sansa E200 - a steady 24fps in full screen 4:3 will be might sweet!
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