Esato Mobile
Sony Ericsson / Sony : General : W900i - Very High Quality music video download
> New Topic
> Reply
< Esato Forum Index > Sony Ericsson / Sony > General > W900i - Very High Quality music video download Bookmark topic
Page <  123>

mysh Posts: 176

tom.k the problem with longer videos like full movies is addressed in the conversion guides i wrote on there. In short the stuttering after 20 minute or so is caused by how the phone buffers playback, it uses it's internal memory. So if you're already playing a video from the internal memory, you get problems. The easy solution is to buy a Pro Duo card. But don't worry, there's also a way around it if you don't have a pro duo card and won't have one soon. That involves a video bitrate of only 250kbps and most importantly using on 32kbps lc-aac audio. Anyway, read the details on the site.
--
Posted: 2006-01-07 00:15:35
Edit : Quote

SKIBBE Posts: > 500

okey i will download and try, have been fighting with this since i got my w900i, the video lag and out of sync sound in full legnt movies, but i use the internal memory have nog memCard yet. but i never manage to get a good result, mostly coz problems spliting my movies. "error 30 i guess" =D becaus 30mins mp4 192kbit video 64kb sound works but not much longer than that. downloading the vid as we speak.

/Jan
--
Posted: 2006-01-07 00:54:23
Edit : Quote

SKIBBE Posts: > 500

Seems to work like a charm, but hard to notice if the sound os out of sync when there is no "lip movement" in this particular song/video

and no real FS black borders.. that must reduce the use of bitrate/quality needed? and therefore use less "cpu/buffer" ?

/Jan
--
Posted: 2006-01-07 01:16:08
Edit : Quote

mysh Posts: 176

skibbe on long videos when using only the phone's memory, you must reduce audio bitrate to 32kbps. Read the website, read the encoding guides, all the details are there.
--
Posted: 2006-01-07 01:31:15
Edit : Quote

tom.k Posts: 37

Wow, great guide! And good thing that I ordered a 1GB SanDisk yesterday
--
Posted: 2006-01-07 11:09:48
Edit : Quote

turboslipper Posts: 4

Mysh, you are a star. That help guide was exactly what I needed...
Just wasted an enjoyable afternoon playing around and got a whole phone/card full of videos.
Might as well stick some of them on tinternet so have loaded a few up

http://www.pointless-engineering.co.uk/mpegs/mp4/dimmu1.mp4
http://www.pointless-engineering.co.uk/mpegs/mp4/doughnutfull.mp4
http://www.pointless-engineering.co.uk/mpegs/mp4/ghostrider.mp4
http://www.pointless-engineering.co.uk/mpegs/mp4/nightwish.mp4

First is a conversion of a reasonably high quality mpeg. Band Dimmu Borgir (death metal) are somewhat dubious but it was a good quality clip. Second clip is taken straight off a DV camcorder and was when the tyres needed replacing on my skyline so I destroyed what was left of them doughnutting it. Third is a clip taken from a high quality DVD rip, some loon on a motorbike annoying people. 4th is another high quality mpeg conversion. Band is nightwish who are cheesy as you like but lead singer is fit as so I don't care...

Anyway, thanks again to Mysh for the help

regards
Ben
--
Posted: 2006-01-08 23:25:09
Edit : Quote

turboslipper Posts: 4

Oops, I've just tried that ghostrider clip on my phone and realised that the sound is out of sync with the picture...this is due to ulead videostudio which seems to do this when you take bits out of the middle of a huge file.

regards
Ben
--
Posted: 2006-01-08 23:31:21
Edit : Quote

tom.k Posts: 37

After playing around with the videos a bit more, I noticed one annoying thing - on color transitions like light to shadow, skin tone on face etc., there are color rings visible instead of a smooth gradient. It's not present on PC, playing the same file, so I guess it's the difference between W900s 262k colors and PCs 16M colors.....
Maybe it's possible to decrease video colors count somehow?
--
Posted: 2006-01-09 08:20:30
Edit : Quote

mv agusta Posts: 62

Hai everyone, i just got my w9 yesterday. My w9 is a bit slow when i trying to acces menu and other stuff, so with the video pla This message was posted from a WAP device
--
Posted: 2006-01-09 10:17:35
Edit : Quote

numb Posts: > 500

Quote:
On 2006-01-09 08:20:30, tom.k wrote:
After playing around with the videos a bit more, I noticed one annoying thing - on color transitions like light to shadow, skin tone on face etc., there are color rings visible instead of a smooth gradient. It's not present on PC, playing the same file, so I guess it's the difference between W900s 262k colors and PCs 16M colors.....
Maybe it's possible to decrease video colors count somehow?


Its not due to the amount of colors, but due to different gamma value, W900 like K750/W800 suffer from a different gamma value approx 1.4 from normal pc monitors gamma. This means its "brighter" than normal pc monitors, which washes out colors and contrast, both on pictures, themes and videos compared to viewed on pc monitor. This also increase viewable artefakts in videos.

K700 for instance which only had a 65k colors screen did not have this problem. The gammavalue was very close to a pc monitor, thus themes, pictures, videos etc. looked the same on the phone as on the pc monitor.

This is very annoying for those creating content (themes, videos etc.) for the new generation of phones, and something we have complained about since the release of K750. When creating themes I need to work with a colorprofile that takes the difference of gamma value into account.

You can do something similar when creating videos by applying a videofilter that changes gammavalue, or brightness/contrast - if your way of encoding has an option of using filters. If you follow mysh's guide using Virtual Dub, there are plenty of filters that can be applied to help out.



[ This Message was edited by: numb on 2006-01-09 10:23 ]
--
Posted: 2006-01-09 11:19:36
Edit : Quote
Page <  123>

New Topic   Reply
Forum Index

Esato home