by Christine Smith • 2020-09-01 15:53:15 • Proven solutions
“I would like to edit VOB movie files, with the goal of cutting some scenes out of my movies to make them suitable for younger viewers. How can I do this?”
If you find yourself in a similar situation when the length of your recorded DVD movie is too long, have some unwanted parts, or you want to add some special effects, a VOB editor is what you need. VOB files are the movie data files present on your DVD disc and include your video, audio, and subtitles. Additionally, if you have multiple clips from different recordings and want to merge into one single video, it can also be done using a good program. So for your queries on how to merge DVD files into one or how to edit VOB video files, the following part will help you.
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Part 1. How to merge DVD or VOB files into one.
If you have recorded a number of clippings and now want to combine them into a single video, it can be done using an expert program. Wondershare UniConverter is one such professional tool that is designed to take care of all your video and DVD related needs. Using the Wondershare tool, you can combine multiple VOB files into one without any quality loss and at a super-fast speed. The program supports all major OS versions of Windows and Mac systems.
Steps on how to combine VOB files into one using Wondershare DVD Editor:
If you want to add the files from the DVD directly, insert the DVD into your computer firstly.
Step 1 Open Wondershare VOB merger and load DVD files.
After downloading and installing Wondershare UniConverter on your PC or Mac, open the program and you'll enter the Video Converter tab by default. Open the drop-down menu beside Load DVD and select the inserted DVD to add the files. If your DVD VOB files are already existing on your PC, you can select them from the option.
Step 2 Select the Merge All Files option.
After files are added to the program interface, slide the Merge All Files button to the right side to make it active.
Here you can also select the output format of the merged files at the Output Format: option. So if you are looking for options on how to combine VOB files into one AVI, you can select AVI and the related resolution as output format here.
Step 3 Start to convert multiple VOB files into one.
Select the destination location on PC where you want to save the merged files at the Output tab. Finally, hit the Start All button to start the process of merging all VOB files into one.
Part 2. How to change VOB to MPEG/MP4/MOV.
Working as a complete video toolbox, Wondershare UniConverter looks after all your video concerning needs. DVD VOB files can be played only on a DVD player and if you want to enjoy the videos on an array of media players and devices, you need to convert it to a compatible format. You can change VOB to MPEG, MOV, MP4, and other formats as needed using the software. In addition to 1000 formats, the software also supports device-specific conversion at lossless quality. The APEXTRANS technology of the software combining with GPU acceleration renders super fast speed.
Steps on how to Change VOB to MPEG/MP4/MOV using Wondershare VOB Editor:
Step 1 Launch Wondershare VOB converter and load DVD files.
Open Wondershare UniConverter on your system. From the main interface, select the Video Converter tab and click Load DVD to add the VOB files from the inserted disc. If your VOB files are present on your PC, select them by clicking the button to load your files.
Step 2 Select the target format.
After VOB files are added successfully, open the drop-down menu next to the Output Format: option. Select the desired output format and its resolution from the Video tab.
Step 3 Start to change VOB to MPEG/MP4/MOV or other formats.
You can select the destination folder of the converted files at the Output tab. Finally, hit Start All to start the conversion process.
Part 3. How to edit VOB video files.
In addition to merging and converting media files, the Wondershare program works as an excellent VOB editor as well. So if you are looking for a solution on how to edit VOB video files, look no further as UniConverter is there. The software comes packed with editing tools like cropping, trimming, cutting, adding subtitles, adding special effects, and others to personalize your videos. The VOB file editor free download is available for Windows and Mac systems from the program site. There are a number of VOB file editor freeware available as well, but the quality and end results are not as perfect as doing with expert software like UniConverter.
So for personalized and professional looking videos, go for Wondershare UniConverter.
Steps on how to edit VOB files using Wondershare UniConverter:
Step 1 Open Wondershare VOB editor and add VOB files.
Launch UniConverter software on your PC/Mac. To browse and add VOB files from your PC by clicking the icon.
Step 2 Select editing feature.
![Edit Edit](https://bursakerjanasional.files.wordpress.com/2014/08/18-juli-14-1.jpg)
Once videos are added to the interface, click one of the Edit icons under the video thumbnail. Select the icon for the desired function. Check How to edit videos for each function. You can trim video, crop video, add subtitles, apply effects, and do more.
Step 3 Save edited VOB files.
If you want to keep the original format VOB, you can choose the VOB format and the source resolution as the output format. Finally, click Start All to save the edited videos.
So whether you are looking for options on how to combine VOB files, or how to edit a DVD, Wondershare UniConverter is definitely the best and ultimate choice. Braemar holter software.
Wondershare UniConverter - Best VOB Converter for Windows / Mac (Catalina Included)
- Convert VOB to MP4, AVI, WMV, FLV, MKV, and other 1000 formats.
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Some time ago, we discussed how you can build a scope within your ownlogic, and even how toget the contents of that scope back out of yourFPGA. Today, we’llfinish the discussion by describing what it takes to turn that data into aValue-Change Dump (VCD)file.
The VCDfile format structure is a common data format that can be used to storedigital logic traces, sothat you can then later view it with a waveform viewingtool. GTKWave ingestsVCDfiles easily.Indeed, two of my favorite tools,Verilatorand the wishbone scope,will both outputVCD traces for this purpose.
One of the really nice parts of this standard is that it is a text-basedstandard. This means you can view, review, and even edit aVCD file if youreally need to with your favorite text editor. While I don’t recommendit, I have needed to loadVCD files into gvim from time to time to figure out what’swrong (or right) with the file.
The standard
The actual standard for theVCD format is part ofThe IEEE Standard for (the) Verilog Hardware Description Language.My copy is IEEE Std 1364-2005, where the Value Change Dump(VCD)file format is discussed starting on page 325.
While this article will discuss some basic components of the standard,it will by no means by exhaustive. For further information, you’ll want tolook up the standard itself.
The VCD Header
The first part of anyVCD file is a header. There are two primary components to theVCD file header: basic file meta-data, and variable declarations.White space is used to separate commands, and to make the file more humanlegible.
The basic file meta-data identifies the program, or program version, thatcreated the VCD file, as well as the date the trace was created on and the timescale it uses.As an example, a recentVerilatorVCD output file from thewbuart32distribution started with the following text:
The first line identifies the tool that created theVCD file and what it’s version is. This line begins with
$version
, and endswith $end
.The second line identifies when this file was created. This field beginswith
$date
and ends with $end
.Edit Vob Files Free
The third line identifies the timescale. The timescale includes a timenumber (1, 10, or 100) followed by a unit (s, ms, us, ns, ps, or fs).Time integers within the file may then be multiplied by this unit to turn theminto engineering units in a display.I have typically used a time scale of
1ns
, although I suspectautofpga files will use more precisetime scales so as to be able to handle multiple dissimilar clocks.This ends the necessary file meta-data, but not the end of the header yet.
The next section of the header declares your variables. Variables aredefined within a hierarchical scope. Hence, you’ll seen sections of variablesdefined by a
$scope
line and ending with an $upscope
line. The firstline ($scope
) defines the name of the scope the variables are found within. For example, variables at the top level of aVerilatorproducedVCD file will have a top-level scope of TOP.The
$scope
line has two words within it. The first is the type of scopebeing referenced. In this case, it references a module
. The secondis the name of the scope, TOP
, beingVerilator’sterm for the top level of a design.Variables found within a module
foo
within TOP would be defined witha similar module section, only that this section would be found within theTOP section.Edit Dvd Files
Variables themselves are declared on lines between
$var
and $end
tags.Four tokens are used, between these two flags, to define any variable,as shown below:The first token, var_type specifies the type of variable. The standardallows many different variable types, although I’ve only ever used
wire
.Other types that might be useful include parameter
, and reg
, although thestandard identifies many more types.Edit Vcf Files
The second token, size specifies the number of bits this value willcontain.
The third token is perhaps the most cryptic,although it need not be. This is the identifer_code assigned to thisparticular variable. This is a printable character, or string of printablecharacters, used to identify the variable during the data section of the file.We’ll come back to this in a moment.
The last part of the
$var
line is the reference. This is the variablename the user has given to the trace. If the variable had a width, it wouldthen be followed by something like [MSB:LSB]
. For example, a four bittrace i_button
could have the reference of i_button[3:0]
.One line thatGTKWaveunderstand’s that I haven’t found in the specification is a
$timezero
line. This line has three items in it, $timezero
, the internal timewhere the zero occurs, and the $end
tag. wbscope uses this tag to place thetrigger at time zero.Finally, the header section is ended by an
$enddefinitions
line:If you are confused about these values and terms, consider looking through a VCD file from a reader that works. The files just aren’t that hard to understand.
Data Section
From the end of the header to the end of the file is the data section.This section contains two types of lines: simulation time lines and valuechange lines.
Simulation time lines start with a
#
and a time value. That’s it.For example,specifies that the following changes happen at
295
time units. Exactlyhow much time this references depends upon the $timescale
command in theheader. Further, the simulation time is an unsigned number. Negativenumbers are not allowed, and will really mess up yourVCD file. (I know … I’ve tried.)Value change lines contain the value the variable is taking on, followed by theidentifier code for the variable that was assigned in the header. These linesare only necessary any time the value in question changes.
For single bit values, the value in a value change line consists of a
0
, 1
, x
, or z
followed bythe identifier code that was assigned to this value in the header. Formultibit values, a b
precedes all of the bits.If not all of the bits are given, then the value is left-extended in anunsigned fashion.As an example, if
J
is defined in the header to reference i_clk
, thenspecifies that the clock is now set to zero. Likewise if
#
is assignedto the 8-bit data value i_data[7:0]
, then this value can be set withConclusion
While most FPGA programmers will not need to read or writeVCD files, anyone wanting to build their own digital logicscope will findit valuable to know how to createVCD files.