The following is a special summary of the technical experience and gains, mainly about the actual problems and solutions encountered when using FFMPEG, and will also recommend relevant online materials.
I. formats supported by FFMPEG
Formats that can be parsed by ffmpeg.exe: (ASX, ASF, mpg, WMV, 3GP, MP4, mov, Avi, and FLV ),Mencoder can be used to convert files that cannot be parsed by ffmpeg.exe (such as wmv9, RM, and rmvb.
Ii. FFMPEG parameter problems
example: FFmpeg-y-I "1.avi"-t
clearly. So, in the future, please give ndsi to your child and ndsi ll to the elderly!
For ndsi, it is estimated that everyone is focusing on small, because it is convenient and small. But this is for us, but what about Europeans and Americans? They have more hands than us. Imagine holding the tiny ndsi in the palm of their hand is not a kind of torture? Therefore, I have to doubt why ndsi ll was launched so quickly after ndsi. It is estimated that the results of the survey in Europe and the Un
parameter setting explanation-bitexact uses standard bit rate-vcodec Xvid uses Xvid to compress-s 320x240 specifies the resolution-r 29.97 percentile rate (which can be changed, make sure that the non-standard watermark rate will cause audio and video to be not synchronized, so it can only be set to 15 or 29.97). Choose-B Program You can judge by yourself, and the sound quality parameter can be improved a little on the basis of the original, it sounds much more comfortable, and it will not be t
Example: FFmpeg-y-I "1.avi"-title" test "-vcodec XviD-s 368x208-r 29.97-B 1500-acodec AAC-AC 2-ar 24000-AB 128-Vol 200-f psp-muxvb 768 "output. WMV"Explanation: The preceding commands can be entered in the doscommand line or created to run in a batch file. However, the premise is that it should be executed in the directory where FFmpeg is located (the cores subdirectory under the directory where conversion is located ).Parameters:
-Y
Over
Example: FFmpeg-y-I "1.avi"-title" test "-vcodec XviD-s 368x208-r 29.97-B 1500-acodec AAC-AC 2-ar 24000-AB 128-Vol 200-f psp-muxvb 768 "output. WMV"
Explanation: The preceding commands can be entered in the doscommand line or created to run in a batch file. However, the premise is that it should be executed in the directory where FFmpeg is located (the cores subdirectory under the directory where conversion is located ).Parameters:
-Y overwrites the o
the default project.
-Qscale -Qmin -Sameq uses the same quality as the source.
Sound part
-Acodec AAC: Set the sound encoding.
-AC DVDRip of can use 2
-Ar -AB The default bit rate is small. We recommend that you set it to 160 kbps (80) or above if you want to hear high-quality sound.
-Vol In this way, if you want to get a high-definition, low-capacity MP4 video, you 'd better not use a fixed bit rate, but use the VBR parameter to let the program go.
Judgment, and the sound quality parameter can
. From the file attributes, these files are made by Microsoft, so you can think of the interface layer in the Modi interface part of the thing.From VC + + Debug window output information to see, in addition to the above DLL file, the OCR process also loaded the Modi installation folder under the XOCR3.PSP, THOCR. PSP, XFile. Psp. These 3 files, although the exten
Http://linux.51yip.com/search/ffmpeg# ffmpeg-y-i "1.avi"-title "Test"-vcodec xvid-s 368x208-r 29.97-b 1500-acodec aac-ac 2-ar 24000-ab 128-vol 200 The-F psp-muxvb 768 "output.wmv" is explained below:-y overwrites the output file, that is, if the output.wmv file already exists, overwrite it without prompting-I "1.avi" input file is a 1.avi file with FFmpeg in the same directory, you can add the path, change the name-title the title of the movie display
only use VLAN 1, you have a good habit of entering this parameter, which avoids accidentally modifying or viewing the wrong VLAN. assuming that you want Cat-4 to be the root bridge, you should telnet to the switch and enter:
Set Spantree Priority 100 1
in VLAN 1 lower priority 100, yes Cat-4 always beats other switches that use the default value of 32769 (including MGS for Lower MAC addresses). But what happens if the Cat-4
INTRODUCTION
The following example is a simple program to read a file and print the contents to a standard printer. It gets the filename of the file to print from the DOS command prompt input line. The prompt input information is passed to the "program" in a buffer area of the "program Segment Prefix (PSP). The address of the "program Segment Prefix are passed to the" in the "ES and DS registers when the" program execution s Tarts. This is the progra
parent class: [modifier] class name extends parent class implements interface 1, interface 2 ...... {class part // If the abstract class is inherited, You need to implement the inherited abstract method // you need to implement the abstract method in the interface} If You Want To Inherit the parent class, when inheriting the parent class, you must use the interface reference to point to the object that implements the interface before implementing the interface 5, and call its method, for exampl
/432289923986540484.html (Query the information on the Internet, think this is good!) )Chapter II Personal skills and processes1, how to better learn the program design and software engineeringhttp://news.cnblogs.com/n/509554/2. Personal Software development process (PSP) Each programmer is different, in order to make the work more efficient, the programmer must be on their own historical data based on the work plan, in order to achieve continu
I. Lab tasks
1. Exercise 1
Part1: Compile the Assembly source program:
Assume Cs: Code
Code segment
MoV ah, 2
MoV DL, 3
Add DL, 30 h
Int 21 h
MoV ah, 2
MoV DL, 6
Add DL, 30 h
Int 21 h
MoV ah, 4ch
Int 21 h
Code ends
End
PS: I am familiar with MASM, so I used this compiler.
When the call was made, the ends was accidentally converted into an end, and an error was returned. The compilation was successful only after the change.
Part2: compile, connect, run, and debug the source program t1.asm.
(1)
1. ostaskcreate ()Ostaskcreate () creates a new task. You can create a task before the multi-task environment starts or run the task. Note: tasks cannot be created in ISR. A task must be in an infinite loop structure.The source code is as follows:
# If OS _task_create_en> 0/* condition compilation, whether to allow task creation */Int8u ostaskcreate (void (* task) (void * PD),/* function pointer, void * Pd is the function parameter */Void * pdata,/* parameter passed during Task creation */OS _
1. ostaskcreate ()Ostaskcreate () creates a new task, which can be created before the multi-task environment is started or executed. Note: tasks cannot be created in ISR. A task must be in an infinite loop structure.The source code is as follows:
# If OS _task_create_en> 0/* condition compilation, whether to agree to the task creation */Int8u ostaskcreate (void (* task) (void * PD),/* function pointer, void * Pd is the number of functions */Void * pdata,/* Number of workers passed during Task
". If an error occurs when you open the hosts file, right-click "dm6437_evm_uart_st_sample.tcf" and choose "DSP/BIOS config-> text edit. importfile ("Ti/SDO/pspdrivers/system/Dm6437/Bios/evmdm6437/UART/dm6437_uart0.tci ");
"
Replace
Utils. importfile ("dm6437_uart0.tci ");
Save.
In this way, the script file runs normally. However, some files cannot be found during compilation. This is because the path in the path file read by the xdc tool is not set
The setting method is as follows:
Open C:/dvsd
explanation-Bitexact uses standard Bit Rate-Use Xvid to compress vcodec Xvid-S 320x240 specify resolution-R 29.97 attention rate (it can be changed to confirm that non-standard attention rate will cause audio and video not to be synchronized, so it can only be set to 15 or 29.97)Select one of the image parts.-B -Qscale -Qmin -Sameq uses the same quality sound as the source.-Acodec AAC: Set the sound encoding.-AC -Ar -AB -Vol Explanation: The preceding commands can be entered in the doscommand l
I prefer reading e-books, which is convenient. There are a lot of professional PDF books in my computer. It would be great if I could read e-books. If I went to a bookstore to buy paper books, I always felt inconvenient, we have to carry a book that is so thick; and our professional books are all foreign books with big heads. One book requires 70 or 80 RMB, and I am always reluctant to buy it. I also seldom buy books. I don't know why. I am always excited to buy devices that read e-books. (That'
Thin P is used as MP4 by LP to watch American dramas.I also wanted to write a WiFi hotspot detection software on thin p, and develop and implement the function of cracking wireless routers. Now I have to put it on hold.
Fortunately, LP conscience discovered that it had approved the ndsl purchase license.Although ndsl screens are not as good as PSP, the touch function is quite interesting, and it is not afraid to be used as MP4. HahaNdsl also has Wifi
pspnet
Pyramid Scene Parsing Network
Included: CVPR 2017 (IEEE conference on Computer Vision and pattern recognition)
Original address: Pspnet
Code: Pspnet-github Keras TensorFlow
Effect Chart:
Abstract
The pyramid pooling modules (Pyramid pooling module) presented in this paper can aggregate the contextual information of different regions to improve the ability of acquiring global information. Experiments show that such a priori representation (that is, the structure of the
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