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I have a text file (generated by a script each week) with multiple lines, where I'd like to strip out certain characted, that differ each week. The files can look something like this;
Community S05E05 Geothermal Escapism SD TV.avi
Community S05E02 Introduction to Teaching SD TV.mp4
Supernatural S09E12 Sharp Teeth SD TV.avi
Elementary S02E11 Internal Audit SD TV.mp4
What I want removed is the season/episode numbering, and the quality and filetype. How to do this on a synology machine (busybox linux).
Given the comment you posted about a perl solution, it sounds like this is all you need:
$ awk '{$2="-";NF-=2}1' file
Community - Geothermal Escapism
Community - Introduction to Teaching
Supernatural - Sharp Teeth
Elementary - Internal Audit
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My husband owns a Bernina embroidery machine and I'm eager to explore the possibility of generating designs through programming. What programming language would be best suited for writing a program to output data in a format compatible with the Bernina embroidery machine's software, or for converting from a format such as HPGL to the appropriate format for the machine? My objective is to either figure out how to output data in a format compatible with the machine's software, or alternatively, find a free or low-cost tool that can convert from a format I can produce, such as HPGL or any other well-documented format, to the appropriate format for the machine. My aim is to create a file with one XY coordinate per stitch, including instructions for thread changes (pauses for thread switching), without relying on features like area fills, stitch spacing adjustments, or stitching order optimization, as I prefer to manage these elements myself.
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I'm looking for an open-source tool/code or some guidance to extract the motion vectors (MVs) of a H.264 encoded bit sequence. I'm already aware that motion vectors can be visualized using ffmpeg with the following command:
ffplay -flags2 +export_mvs input.mp4 -vf codecview=mv=pf+bf+bb
However, I want to produce a log file where the MVs of P and B frames are listed frame by frame. I checked out the structure of MVs from libavutil/motion_vector.h, but I couldn't find an example which shows how they are extracted and laid over the original sequence by ffplay. I thought that if I can find that out, I could possibly re-arrange the code to extract the MVs to a text file.
I also tried the code given in this answer, but it doesn't seem to work with the newer versions of ffmpeg:
I would appreciate any example codes or hints.
The source code for the codecview video filter is here, is that what you're looking for?
[edit] Sorry I guess that's not terribly helpful. The function you're looking for is filter_frame(), which shows you how to read AVMotionVectors (as side-data) from a given AVFrame, this is the code used in your commandline example. This example calls draw_arrow(), but you can simply replace that with a call to printf() or some custom function that logs the MV information to a logfile of your choosing.
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In reading the man pages for tcpdump, I saw that the -dd arguement would output the dump as a fragment of a C file. In what situations is that useful? I take it this is to quickly include and compile the fragment in a program that will be used to process the data according to code we write ourselves? Does this have its utility with unknown or new protocols? Is there some other common, standing situation in which this is needed? Just curious.
It's useful if you're writing a program using libpcap/WinPcap that would use a filter but that, for whatever reason, wouldn't run pcap_compile() to translate a filter string into BPF machine code; it lets you do the compilation with tcpdump and generate some text that you could use in the initialization of an array of struct bpf_insn (a pointer to which, and a count of elements in which, you'd put in a struct bpf_program).
I'm not sure who would do that, however.
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I want to write a program that formats a disc to a new format (not NTFS or FAT32) and can read from and write to the disc, In order to do this, I have to have a way to write single bytes to a disc (without creating files). How do I do that?
EDIT: I found this. But I'm not sure if using CreateFile() as Eli Bendersky said in the first answer (when organized in order of votes) let's you write one byte (or even one bit) at a time, or do you have to write full sectors at a time.
Answer: Since I can't post an answer the question because it was closed, I will answer it write here. You don't need need API functions to do this. All you need to do is open the disk like you open any other file. Like this:
int hFile;
hFile=open("/dev/sdb",0_RDWR);
You program has to directly talk to the driver as you will be by-passing the file-system.
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I opened a .xlsx file in open office calc (on my mac) and the data in most of the cells which has numbered list items, is repeated twice.
For example, if a particular cell has numbered list like:
1. something
2. something
3. something
Then this list will be repeated twice like this:
1. something
2. something
3. something
1. something
2. something
3. something
Any idea how to fix this?
This has been driving me crazy. I finally fixed it by saving the file as .xls (97-2004) format in excel prior to opening it in Open Office.