with the two files. 1, using the rear-facing camera in the portrait (vertical screen, home key in the bottom) mode recording video, its rotation value is 90. (Figure A: Rotation value is 90) 2, using the rear camera in landscaperigth (horizontal screen, home key on the right) mode when the video recorded, there is no rotation metadata, or the rotation value is 0. (Fig. II: No rotation value or rotation value of 0) the four angle values of the 0, 90, 180, and 270 of the rotation can be interpret
1080*1920 instead of 1920*1080. But don't be fooled by this illusion. The actual video size is 1920*1080. Finally, the IMG_1428.MOV video file with no Rotation value or 0 Rotation value shows that its size is 1920*1080, and everything is normal. You can use QuickTime to correctly identify the two video directions. (Fi
After the dm8168 custom board successfully starts the system, you need to test the 8168 codec function and run the examples in the development package. After the startup is complete, connect to the HDMI display. After the starting matrix GUI application, the HDMI has been output. In this case, the decode_display function is preferentially selected for testing.
[Email protected]:/usr/share/Ti-OMX #. /decode_display_a8host_debug.xv5t-I .. /data/videos/dm816x_1080p_demo.264-W 1920-H
frees them from the debate on the significance of quantum physics, however, their predecessors have been entangled in those arguments and brought about rapid progress over the past 30 years.This should be the case: different research styles are required to solve different problems.Using existing frameworks requires different ideas and thoughts than building those frameworks at the beginning.
What have our generation left for young scientists? They pr
horizontal coordinates, we know that their values are the same.
Then we will focus on the three vertical coordinates.
PageY: Get the vertical coordinates relative to the page origin (if my display resolution is 1920*1080, if I can drag the scroll bar, the pageY value may be much more than 1080)
ScreenY: Obtain the vertical coordinates of the display screen position (if my display resolution is 1920*
0 adaptation According to density : 120dpi(240px) ldpi, 160dpi (320px) mdpi, 240dpi (480px) hdpi, 320dpi (640px) xhdpi, 480dpi ( 960px) xxdpi, 640dpi (1280px) xxxhdpi ... Ps: Except ldpi, mdpi,hdpi know, xhdpi itself in front dip increment 80; 1 can not be adapted according to the resolution, according to the density (DPI) corresponding to the folder to fit, put in the corresponding directory, or it will appear small figure high resolution is not clear(High-resolution adaptation on the picture t
red part is indicated by me, Virtual1 device name, will use later, maximum 8192 x 8192 maximum support resolution;
1, in the terminal input: CVT 1920 1080, displayed as follows:
root@xxx:/home/xxx/desktop# CVT 1920 1080# 1920x1080 59.96 Hz (CVT 2.07m9) hsync:67.16 kHz; pclk:173.00 MHzModeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120-hsync
The performance of Nvidia's new flagship graphics GeForce GTX 1080 can be described by Super monsters, but the price of up to 599 dollars (about 4000 yuan) is not easy to accept even for professional gamers. Nvidia seems to have taken this into account and has also launched the GTX 1070 series midrange video card. GTX 1070 and GTX 1080 have the same structure, performance is comparable, and the price is red
TV system display formats. It can be divided into the following five types:
D1: 480i format (525i): 720 × 480 (horizontal 480 line, interlace scan), the same as NTSC analog TV definition, line frequency is 15.25 kHz, equivalent to what we call 4cif (720x576)
D2: 525 P format (720 p): 480 × 480 (horizontal 31.5 lines, row-by-row scan), which is much clearer than D1 line-by-row scan and has the same specifications as line-by-row scan for DVD. The line frequency is kHz.
D3: 1080i format (1125i): 1
= 0.75px
160
Mdpi (medium density)
320*480
1
1dp = 1px
240
Hdpi (high density)
480*800
1.5
1dp = 1.5px
320
Xhdpi (ultra-high density)
720*1280
2
1dp = 2px
480
480 (UHD)
1080*1800
3
1dp = 3px
Ii. What resolution is used for design?
In principle, different resolutions need to be designed separately. However, due to the various requirements of actual development c
argument is not added, only the local host is allowed to establish a connection. Note: This parameter I do not always seem to work in practice, see III
Iptables the process of implementing port forwarding
We have a computer, there are two network cards, eth0 network, IP for 1.2.3.4;eth1 even intranet, IP for 192.168.0.1. It is now necessary to forward the IP packets destined for the 81 port of address 1.2.3.4 to the 8180 port of IP address 192.168.0.2, The settings are as follows:
1. Iptable
Read a lot about using iptables to implement the port forwarding article, but I do not feel that the problem is very clear, now engage my own settings and use of the experience, to talk about its implementation process.
We have a computer, there are two network cards, eth0 network, IP for 1.2.3.4;eth1 even intranet, IP for 192.168.0.1. It is now necessary to forward the IP packets destined for the 81 port of address 1.2.3.4 to the 8180 port of IP address 192.168.0.2, The settings are as follows:
p_quantum_size;// Number of clocks in the process
Clock_t p_user_time;
// User time
Clock_t p_sys_time;
// System time
/* Current scheduling priority */
/* Maximum scheduling priority */
/* Number of scheduling ticks left */
/* Quantum size in ticks */
/* User time in ticks */
/* Sys time in ticks */
Now we analyze the source code, because there are few scheduling Source Code involved, mainly involved In Proc. C and restart. C. Analyze Proc. C first
" in 1899, which gave great inspiration to mathematics in the 20th century. Under his impetus, he formed a small public physical and chemical boom. On this basis, the new fields of structured mathematics and metamathematics are formed. At the beginning of the 20th century, mathematics became more and more abstract. Abstract group theory research, French mathematician leberger's distance theory and point theory, Hilbert's integral equation theory, French mathematician frerest's abstract Space The
riddle, there are problems in the film to understand is really a life rather than the feeling of death.With regard to the scientific problems in Interstellar crossing, a large number of fans have already discussed it quite thoroughly, and these are not repeated, but there are still two problems, almost no one can give a correct or even just a reasonable guess, also can be called the 2 ultimate problem.Question 1 What is the equation that Professor old brand solved? Why can't it be solved? Why d
specify minor, which is a required parameter.classid Major:minor, ClassID as the class identifier, this is optional. If this class has no child nodes, it can be unspecified. Major is the handle of the Father Qdisc.Prio Low-priority class will match first rate of this class and all its subclassesCeil If the parent has free bandwidth, the maximum can be assigned to the value of the current class, and the default is the same as rate.Burst allows the number of bytes sent at ceil rate, at least the
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