users-guide.ps

linux下将各类格式图片转换工具

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(7. Fr) 56.69 727.31 T
(equently Asked Questions) 81.12 727.31 T
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(7.1 Questions) 56.69 699.31 T
(1. How do I encode a sequence that can be) 82.49 672.31 T
(played by the Xing player?) 56.69 658.31 T
(2. I\325m using the Parallax XV) 82.49 644.31 T
(ideo card to) 220.34 644.31 T
(digitize; how do I MPEG-encode the resulting) 56.69 630.31 T
(data?) 56.69 616.31 T
(3. How do I convert the MPEG-encoder) 82.49 602.31 T
(YUV \336les into PPM \336les?) 56.69 588.31 T
(7.2 Answers) 56.69 546.31 T
-0.76 (1. The XING player samples video at 160x120 and) 56.69 518.31 P
(expands to output 320x240. This is where their) 56.69 504.31 T
(speed comes from. The player cannot buf) 56.69 490.31 T
(fer a) 255.32 490.31 T
(320x240 and thus had data overruns. The xing) 56.69 476.31 T
(player would \325) 56.69 462.31 T
(theoretically\325 handle 160x120 I) 126.42 462.31 T
(frames.) 56.69 448.31 T
(Thus, to encode, use P) 56.69 420.31 T
(A) 163.52 420.31 T
(TTERN I and 160x120) 170.85 420.31 T
(frames.) 56.69 406.31 T
(\050jboucher@\337ash.bu.edu\051) 56.69 392.31 T
(2. Use the type JMOVIE, or use the jmovie2jpeg) 56.69 364.31 T
(utility in the misc/ directory) 56.69 350.31 T
(.) 189.84 350.31 T
(3. Stanford\325) 56.69 322.31 T
(s CVv1.2.2.tar) 113.33 322.31 T
(.Z includes) 182.62 322.31 T
(cyuv2ppm.c.) 56.69 308.31 T
-0.2 (Which after you split the Y) 56.69 294.31 P
-0.2 (, U, and V components) 185.05 294.31 P
(out, works \336ne. \[e-mail]\051) 56.69 280.31 T
(This can be ftp\325d from) 56.69 252.31 T
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(havefun.stanford.edu) 56.69 238.31 T
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(, in the directory) 200.61 238.31 T
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(/) 282.89 238.31 T
(pub/cv/) 56.69 224.31 T
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(.) 107.07 224.31 T
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(Usage:) 85.04 728.64 T
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(ppmtoeyuv < input.ppm > output.yuv) 85.04 715.64 T
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0.33 (This takes as input a ppm file and outputs a subsam-) 85.04 689.64 P
(pled yuv file suitable for the encoder.) 56.69 678.64 T
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(6.2 jmovie2jpeg) 56.69 636.31 T
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(Usage:) 85.04 610.64 T
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4.9 (jmovie2jpeg infile outfile start-) 85.04 597.64 P
(frame end-frame) 56.69 586.64 T
(infile) 85.04 560.64 T
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( is a version 2 Parallax J_Movie) 121.02 560.64 T
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(outfile) 85.04 547.64 T
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( is a base file name for the output files) 127.02 547.64 T
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5.44 (start-frame) 85.04 534.64 P
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2.27 ( and) 151 534.64 P
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5.44 (end-frame) 174.97 534.64 P
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2.27 ( are the starting) 228.94 534.64 P
(and ending frame numbers) 56.69 523.64 T
1.39 (This takes as input a J_Movie and creates separate) 85.04 497.64 P
0.09 (JFIF compatible JPEG files with the names base<num>.jpg,) 56.69 486.64 P
(where base is outfile, and <num> are the frame numbers.) 56.69 475.64 T
9.6 (jmovie2jpeg was written by Jim Boucher) 85.04 462.64 P
(\050jboucher@\337ash.bu.edu\051.) 56.69 451.64 T
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(6.3 movieT) 56.69 424.31 T
(oV) 111.15 424.31 T
(id) 125.09 424.31 T
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(Usage:) 85.04 398.64 T
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22.34 (movieToVid movieFile dataDir) 85.04 385.64 P
(indexDir srcHostName) 56.69 374.64 T
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0.95 (This program is used to convert a Parallax J Movie) 85.04 348.64 P
0.58 (into a \322.vid\323 file, which is video only. vid files are used by) 56.69 337.64 P
(some of the programs described later.) 56.69 326.64 T
0.55 (See the README file in misc/mtv/ for more details) 85.04 313.64 P
(on usage.) 56.69 302.64 T
0.58 (movieToVid was written by Brian Smith \050bsmith@-) 85.04 289.64 P
(cs.berkeley.edu\051) 56.69 278.64 T
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(6.4 eyuvtojpeg) 56.69 236.31 T
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(Usage:) 85.04 210.64 T
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(eyuvtojpeg infile outfile) 85.04 197.64 T
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0.27 (This takes as input an encoder yuv file and outputs a) 85.04 171.64 P
(jpeg file. It uses cjpeg to do the compression.) 56.69 160.64 T
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(6.5 blockrun) 56.69 118.31 T
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(Usage:) 85.04 92.64 T
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2.9 (blockrun command num_args firstnum) 85.04 79.64 P
(lastnum skip arg1 ... argn) 56.69 68.64 T
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7.53 (This runs the given command \050which has) 342.71 715.64 P
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0.32 (num_args) 314.36 704.64 P
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0.13 ( args\051, with the args) 362.34 704.64 P
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0.32 (arg1 ... argn) 444.61 704.64 P
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0.13 (, where) 523.21 704.64 P
-0.04 (any \325=\325 character is replaced by a number from) 314.36 693.64 P
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-0.09 (firstnum) 504.78 693.64 P
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(to) 314.36 682.64 T
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(lastnum) 324.64 682.64 T
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( skipping by) 366.61 682.64 T
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(skip) 418.54 682.64 T
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(. For example:) 442.52 682.64 T
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7.23 (blockrun eyuvtojpeg 2 13 19 3) 342.71 669.64 P
(flow=.yuv flow=.jpg) 314.36 658.64 T
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(will run:) 342.71 632.64 T
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(eyuvtojpeg flow13.yuv flow13.jpg) 342.71 606.64 T
(eyuvtojpeg flow16.yuv flow16.jpg) 342.71 593.64 T
(eyuvtojpeg flow19.yuv flow19.jpg) 342.71 580.64 T
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(6.6 vidtoppm) 314.36 553.31 T
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(Usage:) 342.71 527.64 T
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10.05 (vidtoppm filename width height) 342.71 514.64 P
(start end outbase [quality]) 314.36 503.64 T
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0.39 (This takes as input a .vid file of given) 342.71 477.64 P
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0.94 (height) 499.45 477.64 P
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0.39 ( and) 535.43 477.64 P
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2.91 (width) 314.36 466.64 P
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1.22 (, and turns them into a bunch of ppm files named) 344.35 466.64 P
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(outbase) 314.36 455.64 T
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(.N, where N is a number from) 356.34 455.64 T
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(start) 478.74 455.64 T
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( to) 508.73 455.64 T
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(end) 521.5 455.64 T
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(.) 539.49 455.64 T
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(6.7 vidtojpeg) 314.36 428.31 T
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(Usage:) 342.71 402.64 T
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8.05 (vidtojpeg filename width height) 342.71 389.64 P
(start end outbase [quality]) 314.36 378.64 T
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2.83 (This is the same as vidtoppm, except it outputs) 342.71 352.64 P
(JPEG files instead of PPM files.) 314.36 341.64 T
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(6.8 vidtoeyuv) 314.36 314.31 T
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(Usage:) 342.71 288.64 T
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8.05 (vidtoeyuv filename width height) 342.71 275.64 P
(start nth outbase [quality]) 314.36 264.64 T
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0.39 (This takes as input a .vid file of given) 342.71 238.64 P
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0.94 (height) 499.45 238.64 P
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0.39 ( and) 535.43 238.64 P
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3.58 (width) 314.36 227.64 P
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1.49 (, and turns them into a bunch of yuv files named) 344.35 227.64 P
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2.87 (outbase) 314.36 216.64 P
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1.2 (.N, where N is a number from) 356.34 216.64 P
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2.87 (start) 487.12 216.64 P
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1.2 ( to) 517.1 216.64 P
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2.87 (end) 532.27 216.64 P
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1.2 (,) 550.26 216.64 P
(skipping by) 314.36 205.64 T
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(nth) 363.79 205.64 T
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(.) 381.77 205.64 T
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(6.8 PBMPLUS) 314.36 176.31 T
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-0.04 (There is a very useful package called pbmplus avail-) 342.71 150.64 P
1.46 (able for ftp \050ee.utah.edu:/pbmplus for example\051. This has) 314.36 139.64 P
0.31 (conversions from TIFF, GIF, and many other common for-) 314.36 128.64 P
0.86 (mats to PPMs, which the encoder can read. You can even) 314.36 117.64 P
0.58 (keep the originals in their own format, and do conversions) 314.36 106.64 P
(via) 314.36 95.64 T
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(INPUT_CONVERT.) 329.07 95.64 T
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0.08 (ating input files must work on the remote machine. Also the) 56.69 728.64 P
1.78 (USER_DATA and CDL_FILE files must be available on) 56.69 717.64 P
2.53 (the remote sites as specified in the parameter file. This) 56.69 706.64 P
(should be fixed in future versions.) 56.69 695.64 T
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(4. Performance) 56.69 668.31 T
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1.23 (Table seven shows a comparison of sequential per-) 85.04 641.64 P
(formance on different machine types.) 56.69 630.64 T
1.31 (Parallel performance is dependent not only on pro-) 85.04 422.64 P
1.87 (cessor performance, but network performance. If you are) 56.69 411.64 P
-0.21 (using a 10 Mb/s Ethernet, don\325t expect to get better than 4 or) 56.69 400.64 P
0.89 (5 frames per second -- no matter how fast your processors) 56.69 389.64 P
(are.) 56.69 378.64 T
2.5 (Parallel performance is also greatly dependent on) 85.04 365.64 P
1.16 (how big the input files are \050YUV is better than PPM, and) 56.69 354.64 P
0.81 (JPEG is better than both\051, and how big the output files are) 56.69 343.64 P
(\050better compression will lead to less I/O\051.) 56.69 332.64 T
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(5. Other Options) 56.69 305.31 T
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-0 (This section gives example of some more rarely used) 85.04 278.64 P
0.12 (options in the parameter \336le, such as customizing the Quan-) 56.69 267.64 P
(tization tables, or setting the aspect ratio.) 56.69 256.64 T
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(5.1 Custom Quantization T) 56.69 229.31 T
(ables \050parameter \336le\051) 186.45 229.31 T
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(You can specify your own custom quantization tables.) 56.69 206.64 T
-0.31 (Currently you can only do this once per MPEG file.) 56.69 194.64 P
-0.31 ( Y) 260.99 194.64 P
-0.31 (ou can) 269.39 194.64 P
-0.06 (specify both Intra- and Non-intra quantization tables. If you) 56.69 182.64 P
-0.44 (don\325) 56.69 170.64 P
-0.44 (t specify them, then the default tables are used \050c.f. page) 74.83 170.64 P
(D-16, D-17 of the standard\051.) 56.69 158.64 T
(Usage:) 85.04 141.64 T
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(IQTABLE) 85.04 115.64 T
(table row 1) 85.04 102.64 T
(table row 2) 85.04 89.64 T
(...) 85.04 76.64 T
(table row 8) 85.04 63.64 T
100.63 478.31 253.7 484.31 C
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0.06 (a. Macroblocks per second; a) 118.63 471.64 P
1.5 (320x240 pixel image is 300) 118.63 459.64 P
(macroblocks per frame.) 118.63 447.64 T
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(T) 99.59 594.31 T
(able 7: Machine Comparison) 106.49 594.31 T
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(Machine) 121.41 572.64 T
(MPS) 203.66 572.64 T
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(a) 223.66 576.64 T
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(HP 9000/755) 120.13 554.64 T
(280) 207.94 554.64 T
(DEC 3000/400) 112.92 538.64 T
(247) 207.94 538.64 T
(HP 9000/750) 120.13 522.64 T
(191) 207.94 522.64 T
(Sparc 10) 137.91 506.64 T
(104) 207.94 506.64 T
(DEC 5000) 130.69 490.64 T
(68) 210.44 490.64 T
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0.96 (This specifies the intra-coding quantization table \050I) 342.71 715.64 P
0.01 (frames and I-blocks in P and B frames\051. Each) 314.36 704.64 P
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0.03 (table row) 498.76 704.64 P
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(is simply 8 integers, separated by tabs and/or spaces.) 314.36 693.64 T
(Usage:) 342.71 680.64 T
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(NIQTABLE) 342.71 654.64 T
(table row 1) 342.71 641.64 T
(table row 2) 342.71 628.64 T
(...) 342.71 615.64 T
(table row 8) 342.71 602.64 T
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4.63 (This specifies the non-intra-coding quantization) 342.71 576.64 P
(table \050difference vectors in P and B frames\051.) 314.36 565.64 T
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(5.2 Aspect Ratio \050parameter \336le\051) 314.36 538.31 T
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(Y) 340.16 512.64 T
(ou can specify the aspect ratio to be one of the) 346.37 512.64 T
(fourteen legal values as speci\336ed in the standard \050c.f.) 314.36 500.64 T
(Section 2.4.3.2\051. This sets the requested aspect ration for) 314.36 488.64 T
(playback.) 314.36 476.64 T
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(Usage:) 340.16 463.31 T
(ASPECT_RA) 340.16 449.31 T
(TIO \337oat) 406.13 449.31 T
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8.03 (float) 342.71 436.64 P
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3.34 ( is one of {1.0, 0.6735, 0.7031, 0.7615,) 372.69 436.64 P
2.25 (0.8055, 0.8437, 0.8935, 0.9157, 0.9815, 1.0255, 1.0695,) 314.36 425.64 P
(1.0950, 1.1575, 1.2015}.) 314.36 414.64 T
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(5.3 Frame Rate \050parameter \336le\051) 314.36 374.31 T
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-0 (You can specify the frame rate to be one of the eight) 342.71 348.64 P
1.97 (legal values \050c.f. Section 2.4.3.2\051. This is used by some) 314.36 337.64 P
(playback systems to gauge the playback rate.) 314.36 326.64 T
(Usage:) 342.71 313.64 T
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(FRAME_RATE float) 342.71 300.64 T
4.91 (float) 342.71 287.64 P
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2.05 ( is one of {23.976, 24, 25, 29.97, 30, 50,) 372.69 287.64 P
(59.94, 60}.) 314.36 276.64 T
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(5.4 Floating Point DCT \050command line\051) 314.36 249.31 T
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2.13 (The encoder normally uses a quick algorithm for) 342.71 236.64 P
2.06 (forward and reverse DCTs. However, in sequences with) 314.36 225.64 P
0.5 (many P frames, this can result in errors when decoded ref-) 314.36 214.64 P
0.4 (erence frames are used. To use the \050slow\051 double precision) 314.36 203.64 P
(accurate dcts, use the following flag:) 314.36 192.64 T
(Usage:) 342.71 179.64 T
(mpeg_encode -float_dct) 342.71 166.64 T
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(6. Other T) 314.36 139.31 T
(ools) 366.89 139.31 T
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(The misc/ directory contains several useful tools.) 314.36 112.64 T
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(6.1 ppmtoeyuv) 314.36 83.31 T
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(frame-to-I-frame scale.) 56.69 728.64 T
(Usage:) 85.04 715.64 T
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(-bit_rate_info rate_file) 85.04 702.64 T
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(This puts the bit rate info into the specified file) 85.04 689.64 T
(\050order of info, etc.\051) 85.04 676.64 T
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(3. Parallel Usage) 56.69 641.31 T
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1.03 (In parallel execution there are slave processes. You) 85.04 610.64 P
(can have those processes run nicely if you want.) 56.69 599.64 T
(Usage:) 85.04 586.64 T
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(-nice) 85.04 573.64 T