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JayOnThaBeat's Avatar
Posts: 1,028 | Thanked: 578 times | Joined on Mar 2009 @ Chicago
#131
Originally Posted by silvermountain View Post
This was a very good and informative thread when it comes to what resolution, etc to save movies in. Thanks.

I know the N810 supports a number of formats like MP4, AVI, etc - is there one format that provides better results than others?
mp4 is usually what I end up going with. haven't had any problems.

check the video conversion link in my sig. it turns out a nice vid with decent size (compared to original)
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Addison's Avatar
Posts: 3,811 | Thanked: 1,151 times | Joined on Oct 2007 @ East Lansing, MI
#132
I've got one more question, it should be the last of them... I hope.

Is it possible to kill all running processes before using mplayer to get that extra little kick in speed and performance?

If so, how can this be done?

I'm running on a N800 with latest Diablo kernel.

Thanks!
 
totololo's Avatar
Posts: 258 | Thanked: 176 times | Joined on May 2009 @ Paris France
#133
Killing everything at once may not be possible/safe but you can at least go in plane mode.

I don't agree with the previous comment about Mplayer and videos.
Many videos downloaded will NOT play properly because of format, size, bitrate, decompression process being too heavy for our little NITs ... This is not a problem with Mplayer however, it's quite natural.
 
Addison's Avatar
Posts: 3,811 | Thanked: 1,151 times | Joined on Oct 2007 @ East Lansing, MI
#134
Okay, I'm feeling like throwing out another question here.

Hope you guys like math problems.

So I have a video that is exactly 704x400, and yeah, It's much too big for the tablet to rifle off.

How can I find a lower dimension that has the same 1.76 aspect ratio?

I could write the program in BASIC language but I have nothing on my computer, and using a calculator takes too long.

Is there a simple math utility program to figure this one out to make it easy on me?

352x200 carries the same aspect ratio of 1.76 but is there something a little bigger than this that stays under the 200,000 pixels suggestion?

Thanks!
 
totololo's Avatar
Posts: 258 | Thanked: 176 times | Joined on May 2009 @ Paris France
#135
Addison,

Why don't you use HANDBRAKE ?
It helps you to keep the aspect ratio (Video / Picture Settings / mark "keep aspect ratio / Anamorphic : none) then you change one of the sizes and it adapts the other one as best as possible.

1,76 ... but it's 16:9 video !!!
Didn't you read all the settings I gave in this thread ?!

I worked a lot on this, so please, at least, read it and try it !
 

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totololo's Avatar
Posts: 258 | Thanked: 176 times | Joined on May 2009 @ Paris France
#136
Originally Posted by totololo View Post
I made some extensive testing at home these 2 last days.

Here are the resolutions that worked well for me, depending the source video format (ratio and framerate)

For sources at 24 or 25 fps (24 is cinema, 25 is PAL video)

16:9 > 576 x 352
Wide > 640 x 272
4:3 > not tested


For sources at 30 fps (NTSC video)

16:9 > 480 x 288
Wide > 576 x 240
4:3 > 400 x 304

Encodings with Handbrake, from various DVD i have.
File were encoded to AVI with MP4video
2 passes can be used, but bitrate should be kept as low as possible, around 600 to 750 for video
All audio was 44.1 MP3 128 Kbps
Was it so difficult to find ?
 

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Posts: 1,950 | Thanked: 1,174 times | Joined on Jan 2008 @ Seattle, USA
#137
I've always been happy using N800 Video Convert, but I'm giving Handbrake a try. There is something I don't get. (OK, a number of things, but I'll start here.)

I'm working from files ripped with DVD Shrink.

Handbrake says my source is 720 x 480, but it also says the aspect ratio is 1.78. Since 720/480 is 1.5, where does 1.78 come from? (Or where does 720/480 come from?)

Also, does anybody know if you can use N800 Video Convert if you want subtitles? (I'm still encoding my first movie with Handbrake, but it looks like it's going tolet me include subtitles. Woo-hoo!)

In Handbrake, are people using Mpeg-4 (Xvid) or Mpeg-4 (FFmpeg)? Are you starting from a Preset and modifying? Under Picture Settings are you just ignoring Crop and Filters?
 
Posts: 1,950 | Thanked: 1,174 times | Joined on Jan 2008 @ Seattle, USA
#138
Originally Posted by totololo View Post
I made some extensive testing at home these 2 last days.

Here are the resolutions that worked well for me, depending the source video format (ratio and framerate)

For sources at 24 or 25 fps (24 is cinema, 25 is PAL video)

16:9 > 576 x 352
Wide > 640 x 272
4:3 > not tested


For sources at 30 fps (NTSC video)

16:9 > 480 x 288
Wide > 576 x 240
4:3 > 400 x 304

Encodings with Handbrake, from various DVD i have.
File were encoded to AVI with MP4video
2 passes can be used, but bitrate should be kept as low as possible, around 600 to 750 for video
All audio was 44.1 MP3 128 Kbps
Totololo, if you think this is the apex of your Video-Conversion research, I recommend that you edit your Post #1 with a comment and a link to this one (that is, to your Post #40).
 

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totololo's Avatar
Posts: 258 | Thanked: 176 times | Joined on May 2009 @ Paris France
#139
1/ Handbrake is perfect for DVD ripping, using a pre-ripped dvd is only making things more complex.

2/ I guess that your 1.5 / 1.78 ratio question is involving anamorphic system ... if i remember correctly, someone posted a link earlier in this forum to explain what is anamorphic. My tip : in Handbrake, go to video settings, and look at the picture (you can change chapter in the preview). Then change anamorphic setting from "strict" to "non" and see what looks natural and not streched/compressed. If your DVD seems to be in anamorphic mode, set Handbrake in anamorphic LOOSE, so you can easilly resize the movie.

3/ Handbrake allows you to select easilly languages and subtiltles.

4/ You can try both, on my Mac, i just use FFmpeg.


About editing my first post, good idea ! It's done.
If somebody comes with better settings, i 'll change it again !

Last edited by totololo; 2009-06-19 at 07:25.
 

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Moderator | Posts: 7,109 | Thanked: 8,820 times | Joined on Oct 2007 @ Vancouver, BC, Canada
#140
I talk a little bit about resizing / cropping over in this thread. Bonus: an actual example, with pictures!
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