k****i
发帖数: 838 | 1 文科生？开始科普。
这里说3D闪烁有两种，第一种是左右眼看到不同的跳跃画面，第二种是，快门打开了，
你看到了黑画面或另一眼的画面。
MPEG4是著名的帧间压缩格式，压缩率直接影响帧帧之间的关系，何况左右两轴。你以
为你在看电影胶片，帧帧之间互相没关联啊，搞笑。从高码率转低码率，几十个参数要
调，有几个著名网站转换SBS就被骂闪得厉害，自己放狗搜。说的是第一种闪烁。
现在SBS 3840x1080的mkv很少，1920x1080半宽已经是不错的了，大部分是1280x720半
宽，就算是3840x1080的mkv，我不太相信在不靠显卡硬件支持的情况下，$99的东西可
以把画面切好再同步到不闪，那可是3840x1080的分辨率啊。这说的是第二种闪烁。
现在MKV的默认3DTV的格式是1920x1080半宽，不是硬拉是什么？
现在请不要提60HZ，2015以后可以（新的avatar用60P）。现在3D基本都是24P的，算一
下24和60之间的关系就知道看快门3D不能用60HZ了
蓝光原盘3D+120HZ 5：5 Pull-Down的快门才是欣赏3D比较好的方案，有些东西是省不
了的。
除非不好... 阅读全帖 |
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d**o
发帖数: 864 | 2 记错了.不用.
直接用一个叫mencoder的东西.
这是我的source code
video_path是我存照片的path
import os
from Parameters import *
video_path='uniform/video'
command = ('mencoder',
'mf://'+video_path+'/*.png',
'-mf',
'type=png:w=800:h=600:fps=1',
'-ovc',
'lavc',
'-lavcopts',
'vcodec=mpeg4',
'-oac',
'copy',
'-o',
video_path+'/output.avi')
os.spawnvp(os.P_WAIT, 'mencoder', command) |
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b**r
发帖数: 352 | 3 beagle board will work.Most generic wireless IP cameras run linux, you can
search on that as well.
IP cameras typically use SOCs, which has hardware video encoder that does
h264/mpeg4/mjpeg encoding. |
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x****s
发帖数: 921 | 4 手边没有DVD，see here:
http://club.myce.com/f62/tutorial-dvd-video-file-structure-7764
and man ffmpeg:
· You can transcode decrypted VOBs:
ffmpeg -i snatch_1.vob -f avi -c:v mpeg4 -b:v 800k -g 300
-bf 2 -c:a libmp3lame -b:a 128k snatch.avi
This is a typical DVD ripping example; the input is a VOB file,
the output an AVI file with MPEG-4 video and MP3 audio. Note
that in this command we use B-frames so the MPEG-4 stream is
DivX5 compatible, and GOP siz... 阅读全帖 |
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p****r
发帖数: 112 | 5 mpeg2, mpeg4, vc-1的标准文档
谢谢！ |
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a*********a
发帖数: 3656 | 6 可悲的就在于此。Apple毁掉里一代人的audio品味，Netflix嘛。。。。。。
没有好的回放设备，Netflix的数据，BR上的数据都无法高质量的回放。
你可以去学习一下数字图像，视频处理，luma upscaling, chroma upscaling有些啥算
法，都是啥复杂度。deinterlace有些啥算法，都是啥复杂度，去posterize有些啥算法
。MPEG2， MPEG4都是有损压缩，解压的软件或硬件，对回放的质量（和原始无损数据
的差别）有直接影响。你说的smart tv，不少连proper deinterlace都做不到。这些都
是单机，24fps的，41ms得送一贞，60fps的17ms得送一贞。解码，渲染算不过来的就
drop frame，dropped frame多了就有judder或tearing。能上什么算法，得看有多大处
理能力以及系统本身的overhead。算法弱了，锐度就不够，或者有artifact。手机屏上
都无所谓，60，70“以上的显示设备，区别就明显了。
我从来都没有否认4k的source data可以比1080的source data效... 阅读全帖 |
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o**o
发帖数: 3964 | 7 的确是内部兼容性差，但是也并非全无是处，毕竟集中了绝大多数
可能用得到的（更多是根本用不到的）Codec，集中安装，便于管理。
主要的问题其实就是内建的XviD有问题，导致图象失真，坚决办法如下。
假设机器上所有Divx相关的codecs都已经先彻底清掉。
1。下载并安装最新的XviD，这样就已经能看XviD制作的电影，但可能有锯齿边。
2。下载安装NimoCodec 5.8，customer安装，只选择
Divx 3.11apha (这个是盗版MS的codec)
Microsoft MPEG4 （用来看MS的.asf等）
Divx audio (audio codec)
Fraunhofer MPEG-Layer3 codec (MP3 codec的一个盗版？多数机器应该已经有了）
Divx 3.11apha DirectShow Filter (3.11的directShow renderer）
VobSub （字幕管理）
AC3 Audio Decoder （如果还要安装WinDVD就不用选这个，WinDVD的AC3更好）
3。另外可选 |
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f****l
发帖数: 14 | 8 you should do the following b4 watch the avi files(99%):
1. go to the following page to download the codecs and intall them.
http://superlightdns.twbbs.org/mpeg4/mpeg4_teach.php3
2. download xvid.exe and install it , you can find it on google.com
3. download the nimo codec pack and install it as the following article tells
you. |
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f*******a
发帖数: 2662 | 9 今天有时间,随便喷两句
主要针对各种avi,mpg,dvdrip视频文件.
版面各种与此相关的问题基本可以全部被指南了.
首先请准备好以下文件(版本号请用以上最新)
WMP_codec_8.0.exe (WMP: Windows Media Component Setup
divx_311alpha.exe (老牌的MPEG codec,有Media Player 6.4那天就开始指望它了)
DivXPro502Bundle.exe (DivX 5 video encoding tool)
AC3Filter (AC3 playback, the stream switcher for dual audio)
VobSub.... (Sub....字幕,编辑,英语不好就要字幕)
ffdshow..... (decoding filter for decompressing DIVX movies)
XviD-04102002 (an MPEG4 video codec
DivX4Ful |
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a***n
发帖数: 3633 | 11 请问有没有一款通用的视频格式转换软件。就是只要能在电脑屏幕上正常播放的，就可以
转换为指定格式，比如mpeg4或者divx之类的格式？我用过wisencoder，貌似它什么都能
转，但是有的MKV文件转成divx不能播放。 |
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h**v
发帖数: 2010 | 12 of course can. i converted the motion jpeg video shot from my fuji f20 to
mpeg4. |
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v***s
发帖数: 1893 | 13 是这样的，nikon照相机拍的录像，mov格式180M 86×86大小。
看来几位老大的推荐，用来sony vegas pro，介绍上说是能打开的，打不开。
video edit magic 4.0，打开到40%，死机，内存用光了。
rad转换到avi的full frame，文件大小达到4.2G, media player放的时候啥都没有。
powerdvd的dvd maker，能看不能编辑。
现在virtualdub好像可以编辑rad mpeg4压缩过的avi了。
拍的时候相机转了90度，所以还要旋转。有点暗，还需要光balance。
有经验的能不能给推荐一个软件能旋转和调节光平衡的，谢 |
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m**********e
发帖数: 57 | 14 I am looking for the tool as well, if you found the right one, could you
please share the info with me? |
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f******e
发帖数: 582 | 16 Anyone knows how to convert video file in .rmvb format to either (.avi,
..wmv. mpeg4,)?
I need to record a .rmvb file onto DVD. however, the software I am
using does not recognize .rmvb format...
or anyone could recommend a software that can direct record .rmvb file
onto DVD?
Thanks. |
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t******t
发帖数: 13 | 19 我最近的心得是用
ffmpeg做动画.
http://ffmpeg.sourceforge.net/
有LINUX和苹果版(叫ffmpegX,预编译的
FRONTEND,另外在GOOGLE上搜).
自己下载编译.会SHELL
SCRIPT就能对大量的图片
进行处理.有很多CODEC可选.
我常用的套路是计算生成
一堆JPG文件(STILL IMAGE
仍有多种可选格式,再不济
用LINUX下的CONVERT转换一下).
然后用一个命令行将其压成动画.
MPEG4压缩出来的东西很清楚.
输出格式有AVI,MOV,MPEG等.
另外如果做三维RENDERING,
MAYAVI是个非常好用的工具.
如果你知道PYTHON的话,那就更好玩了. |
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Z******i
发帖数: 106 | 20 MPEG技术简介
网络应用最重要的目标之一就是进行多媒体通信。多媒体信息主要包括图像、声音和
文本三大类，其中视频、音频等信号的信息量是非常大的。而且这些信息的表达方式、输
入、输出的要求也各不相同，因此在多媒体通信中，对这些数据进行有效的表达和适当处
理是非常重要的。其中，多媒体信息的压缩技术是多媒体通信领域的关键技术之一。MPEG
应运而生，对多媒体通信的发展起到了革命性的推动作用。
MPEG是Moving Pictures Experts Group,动态图象专家组的英文缩写，这个专家组始
建于1988年，专门负责为CD建立视频和音频标准，其成员均为视频、音频及系统领域的技
术专家。由于ISO/IEC1172压缩编码标准是由此小组提出并制定MPEG由此扬名世界。对于
今天我们所范指的MPEG-X版本，是指一组由ITU(International Telecommunications
Union)和ISO(International Standards Organization)制定发布的视频、音频、数据的
压缩标准。
MPEG的缔造者们原先打算开发四个版本：MPEG1-MPEG4 |
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m*********k
发帖数: 10521 | 21 "[pingpongtheater]
baybridge09 May 25 ● 发20个包子"
成功奖励 10 伪币的用户: QQMJ, ypeng, mpeg4, shield, nmtycl, yjcs, javelin,
wendy33, fudaoyuan, Drake, LLNL, surefirer, infiniteloop, Jingqg1979,
junkywind, sy99, jinjingforev, johnw, vvWvv, milestone100, qings, WMTT,
zhxcn, not0, Clicking, pass, BDG, shangwangkk, heige, PenRBS
成功扣除 330 伪币的用户: baybridge09 |
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m*********k
发帖数: 10521 | 22 "[NCAA]fullbloom Jan 13 ● 热烈庆祝Ohio State Buckeyes夺得CFP冠军"
成功奖励 100 伪币的用户: ahjffans, bjpglbs, PetTurtle, bbdou, lilyning, surely, surefirer, GoBlue, Renshaw, tiedman, yuanQ, cnbuff410, tteou, baay, osuwen, gtm, sadida, upload, arescor, YouRFree, sunfish, palm, qqi6, algt, qn, metamore, guoguo914, dfbb, musher, ziwan, logic98, FBI, treeline, jessesoul, shark, PaiMei, waxiu, wintertide, VeroModa, GoRockets, werther, bluepen, Vealmacht, mildseven007, chenx711, chehu, zhxcn, sbbtimxx, dawnlidu, F... 阅读全帖 |
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m*********k
发帖数: 10521 | 23 "[NCAA]tsio Nov 21 ● MSU赢了包子30个"
成功扣除 330 伪币的用户:?tsio
成功奖励 10 伪币的用户:?purpleracoon, tteou, GoBlue, cgrzh, Enterlight,
bjpglbs, YouRFree, mpeg4, SEAGULL535, kj12189, ahjffans, violetlvsoso,
newtiger, anyech, NickLouSaban, nitmithv, ketall, LoveinGod, naozi,
GeauxTigers, Niken, pumpkin18, moliniao, utkfan2013, whinning, Tomato9,
Songsu, fmiaoz, surefirer, Renshaw |
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k**********s
发帖数: 6409 | 24
USB的便宜，有deal的时候就更便宜了，我都是在local店子里$10捡的，好几个，有
EVGA inDtube（正用着），AuviTek（各种杂牌，比如Mygica，不好），还有个WinTV（
曾经是最好的牌子，还没开苞）。
HDHomerun方便，但是贵，我是在$30的deal时入的，一般是100多，有些有多个tuner，
较新的型号可以将MPEG2（美国的HDTV用这个带宽高的老码）转换成低带宽的MPEG4，适
合对外直播（这样你不在家的时候也可以看），否则你需要一台高速的电脑来做转码（
网本肯定不行）。N300的WiFi（比如我最近买的Netgear）看MPEG2足够了，也就是在家
里看不需要转码。 |
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w*******y
发帖数: 60932 | 25 Xilisoft HD Video Converter is a professional HDTV converter tool designed
to transform your video to various high definition video formats like HD ASF
Video, HD AVI Video, HD H.264 Video, HD Quick Time Video, HD MPEG4 Video.
It can convert TS to WMV HD, AVI to TS HD, WMV HD to TS HD and so on.
Xilisoft HD Video Converter can also convert audio to audio, video to audio
and picture, as well as create videos from pictures. What's more, the HD
Video Converter supports the H.264 video format, offeri |
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w*******y
发帖数: 60932 | 28 Turn your USB drive into a media player - Play DVD-quality content from your
USB drive. Optimized for My Passport portable hard drives. Also works with
most other USB drives, digital cameras, and camcorders.
Supports an extensive list of file formats - Plays back a wide variety
of DVD-quality file formats without the need to transcode, including
RealVideo.
Simple, intuitive user interface - Use the included remote control to
navigate smoothly through your entertainment choices using the ... 阅读全帖 |
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w*******y
发帖数: 60932 | 30 LG WiFi Built-in Blu-ray Player BD570 - Sale $149.99, with Coupon Code
Savings $127.99 and free shipping at newegg.com!
Use this code at checkout for discount: EMCZNZV88 exp. 12/19
Don't forget Mr. E Bates for addtl savings (2%)
Deal LINKY
The LG Network Blu-ray Disc player BD570 brings you breathtaking high-
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at the clarity and full-color spectrum of every scene, while Dolby Digital,
Dolby TrueHD, Dolby Digital Plus, LP... 阅读全帖 |
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w*******y
发帖数: 60932 | 31 Hello,
First time posting
Found this deal on Amazon for one of the TVs I been tracking the price on.
Seems to be the best price I've seen for buying online.
Key Specifications
Screen size: 55 inches
CineMotion Reverse 3:2 Pulldown Technology: Yes
24p True Cinema Technology: Yes
3D Comb Filter: Yes
TV Guide On-Screen: Yes
Deep Color: Yes
Live Color Technology: Yes
Auto Picture Setting w/ HDMI: Cinema, Sport, Music, Photo, Graphics, Game
Speakers: 2x 10W (20 watts of total power)
5.1 Channel Audi... 阅读全帖 |
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w*******y
发帖数: 60932 | 32 Sony BRAVIA KDL46EX710 46-Inch 1080p 120 Hz LED HDTV, Black
from amazon for 899 + FS (no tax)
Link:
http://www.amazon.com/Sony-BRAVIA-KDL46EX710-46-Inch-1080p/dp/B
details
Full HD 1080p Resolution: Experience Full HD 1080p picture quality, the
highest at-home resolution, and take full advantage of HD sources like a Blu
-ray Disc Player or PlayStation3 gaming console via the 16:9 wide screen
panel (1920 x 1080).
Edge LED backlight: Enjoy a slim design plus amazing dynamic contrast with
an Edge LE... 阅读全帖 |
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w*******y
发帖数: 60932 | 33 Toshiba Thrive 10.1-Inch 16 GB Android Tablet w/ HDMI Port $405 free
shipping from Digital Etc
Price Dropped
Use Promo Code THRIVE405Processor & Graphics: 1 GHz NVIDIA Tegra 2 dual-core
mobile processor with GeForce graphics
Storage: 16 GB internal flash memory
Memory: 1 GB internal DDR2 memory
Wireless: Wireless-N Wi-Fi networking (802.11b/g/n) plus Bluetooth 3.0
Audio: Built-in stereo speakers with SRS Premium Voice Suite
Sensors & Location: GPS, gyroscope, accelerometer, ambient light sensor,... 阅读全帖 |
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w*******y
发帖数: 60932 | 34 $369 @ Ebay Daily Deal
Link:
http://www.ebay.com/itm/Samsung-Galaxy-10.1-Tablet-16-GB-with-W
A screen so lifelike you'll want to touch it.
The Tab's WXGA-TFT touchscreen redefines high resolution. Every image has
amazing color, radiance, and clarity to capture all the detail of real life.
Every letter of text is razor sharp. Video chatting is more like talking
face-to-face. Now when you watch a movie with $100 million in special
effects, you get the full impact. And when your finger touches the
... 阅读全帖 |
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w*******y
发帖数: 60932 | 35 Link:
http://lastcall.dailysteals.com/
Condition: Factory Recertified
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Brand: D-Link
Model: DSM-380
Product Features:
Boxee is the best way to enjoy entertainment from the Internet or a
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Linux and Windows brings all your entertainment into one place - whether it'
s from the Internet or from your hard drive or home network. Plus, they
overlay everything with a heaping helping of social by letti... 阅读全帖 |
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