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video playback settings. |
Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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hi, i'm trying to get some video clips/movies on my memory stick to play on my k750. but i'm having problems with some being very laggy/freezing, sound going off etc. basically i looking for the settings to convert a video for my phone, playing from the memory stick at the best possible quality i can get but still with a perfect playback so that no lag takes place and sound doesn't go. i found this on th web:
it plays absolutley great off the the memory stick, the only problem i have is that the quality is very very poor, and isn't too far off from being 3gp...
any help, thanx
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Mad_Bob
Joined: Dec 28, 2004
Posts: > 500
From: A Bread Bin
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The problems is is that the resolution is smaller than the screen size, although this cant be helped it causes a small quality loss because the video has to be stretched. IMO you should up the bit rate a little and drop the frames to about 12-15 fps.
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[ This Message was edited by: Mad_Bob on 2006-01-25 20:11 ] |
Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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what do you think for the bit rate?
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Mad_Bob
Joined: Dec 28, 2004
Posts: > 500
From: A Bread Bin
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Not 100% sure, best bet would be to mess around with different settings, I only used about 120 on my P910, but people have used alot more, its down to your own prefrence. Start at about 160 and see how it plays.
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Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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yea, thanks... with ur advice it worked perfectly, thanks a lot.
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RyaN
Joined: Jun 24, 2002
Posts: > 500
From: By the hill, Sussex
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just a suggestion, you should try around 192kbps video, 96kbps audio sample rate 44100khz and in stereo, and framerate between 15-25 (whichever works best) |
Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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i'll try it...
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Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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i do it with 210 video bitrate, 25.00 frame rate.
i tried what you said with the audio but the sound just cuts out almost straight away...
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Silvertear
Joined: Jan 29, 2006
Posts: 7
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I've been trying with 192kbps and 20 fps for video, and 96kbps and 44100 sample rate for audio. The result is very good. But one question, some videos are a bit lagging at start, but after that, it seems OK. How do I fix it? |
choclate
Joined: Oct 19, 2005
Posts: 29
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same question here |
numb
Joined: Feb 07, 2005
Posts: > 500
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quality and playbacksmoothness very much depends on the quality of the encoder used and how much you can alter the encodingsettings, and how well the encoder used can controll the bitrate you specify. You cannot generalize and say these or these settings are allways optimum as it depends on the encoder you use.
Generally speaking though you cannot have both a high bitrate and high number of fps and a low keyframeinterval.
If you want to encode in 25fps - you should never go above 150kbps and the keyframeinterval should be increased from 0 to atleast 100.
You should never encode above 200kbps, this is maximum, but 200kbps can be achieved with smooth playback if you lower the fps to 15, and increase the keyframeinterval from 0 to 50.
At the same time you should never go above a combined bitrate of 264kbps for both video and audio, with keyframeinterval 50 and 15fps playbackspeed. This means if you encode video at 200kbps then audio can only be 64kbps, if you want 96kbps audio you have to lower videobitrate to 168.
210kbps video with 96kbps audio and 25fps is a definate no go and will cut off audio during playback.
Firstly deside on a good encoder, suggestions are Nero Recode, Mpegable or Xvid/Vdub
heres a guide for Nero Recode
http://www.spawnweb.dk/recode/k750.htm
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Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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so what settings do you tend to use numb? like for smooth playback, but best quality possible...
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Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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god this confusing... i am trying to find the settings that will give videos that may be short or long length that will have the best quality that i can get using my k750 but at the same time a very smooth playback with sound that does not jump or cut out etc...
what does anyone suggest.
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Xugaa
Joined: Oct 05, 2005
Posts: > 500
From: Great Britain
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i currently have a simpsons episode and these are its settings:
summery:
mp4
bitrate - 193
video:
frame rate - 25
size - 176x144
audio:
bitrate - 0
sample rate - 24000
channels - 2 (stereo)
now this plays with i think perfect play back, although the quality isn't amazing and can be a bit rubbish at times and the audio works though sometimes cuts up a little. quality is the main thing i want to sort out but what about sound too? how should i adjust the settings to sort this?
thanx.
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[ This Message was edited by: Xugaa on 2006-01-29 13:21 ] |
numb
Joined: Feb 07, 2005
Posts: > 500
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I almost allways use Nero Recode and the settings in the guide I posted link to.
Gives optimum quality and allways fluent playback, I never have any problems at all. My highest recomendation to this sollution for mp4 creation.
Once in a while I use VirtualDub and Xvid, if I have some poor quality originals that need some filterering before encoding. |
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Posted: 2006-01-25 20:31
