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Questions tagged [mov]

Questions related to the assembler `mov` instruction

The assembler mov instruction loads an immediate value into an register or transfers data between register and register or register and memory. See:

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Difference between MOVDQA and MOVAPS x86 instructions?

I'm looking Intel datasheet: Intel® 64 and IA-32 Architectures Software Developer’s Manual and I can't find the difference between MOVDQA: Move Aligned Double Quadword MOVAPS: Move Aligned Packed Single-Precision In Intel datasheet I can find…
GJ.
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MOVing between two memory addresses

I'm trying to learn assembly (so bear with me) and I'm getting a compile error on this line: mov byte [t_last], [t_cur] The error is error: invalid combination of opcode and operands I suspect that the cause of this error is simply that its not…
Justin
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How can I get a frame sample (jpeg) from a video (mov)

I want to get a frame sample (jpeg) from a video file (mov) with java. Is there an easy way to do this. When I search in google all I can find is to make mov from multiple jpgs. I dont know maybe I cannot find the right keywords.
Nuri Tasdemir
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Why is mov turing complete?

I found this recently: https://github.com/xoreaxeaxeax/movfuscator It seems to be contingent on the fact that mov is turing-complete. Is that true, and why?
schuelermine
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Error "Transparency encoding with auto_alt_ref does not work" when converting a .mov with Alpha to .webm with alpha with ffmpeg

I am trying to convert a .mov file with alpha transparency into a .webm file and have been following this thread for help: Convert mov with Alpha to VP9 Webm with Alpha Using ffmpeg The command line I have been using is ffmpeg -r 24/1 -i…
ThomTTP
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How does MOVSX assembly instruction work?

How does the assembly instruction MOVSX work in this following example: MOVSX ECX,BYTE PTR DS:[EDX] In this case, here are the state of the registers: ECX = 0000000F EDX = 0012FD9F From what I thought, it takes last bytes of [EDX] = 9F,…
Abundance
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mov instruction in x86 assembly

From what I've read about mov, it copies the second argument into the first argument. Then, what does this do? movl 8(%ebp), %edx It copies whatever is in edx to the first parameter of the function (since an offset of +8 from ebp is a…
hut123
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difference between conditional instructions (cmov) and jump instructions

I'm confused where to use cmov instructions and where to use jump instructions in assembly? From performance point of view: What is the difference in both of them? Which one is better? If possible, please explain their difference with an…
jigglypuff
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How to support MOV(quick time) in android?

I want to play in .mov file in android. But videoview or mediaplayer doesn't support this meida format. How can i add the support to it?
Aaron
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Convert from .mov to .mp4 (or h264) using avconv

Looking at the avconv website there seem to be a vast array of options to convert video. However, I'm getting lost in all the technical detail. Is there a simple way to convert a .mov to a .mp4 (or h264)? I'm happy if it's slightly lossy. If it…
Snowcrash
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mov eax, large fs:30h

I was analyzing some x86 binary and found the following instruction which I can not understand. Can someone please explain me following instruction? mov eax, large fs:30h I googled this, and it turns out it is some anti-debugging stuff... but…
daehee
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Anyone knows what "mov edi,edi " does?

69A8AB13 int 3 69A8AB14 int 3 69A8AB15 mov edi,edi 69A8AB17 push ebp 69A8AB18 mov ebp,esp mov edi,edi doesn't make sense for me,what's it for?
COMer
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8085 assembly instructions MOV, LDA and STA

I get the point of MOV, STA and LDA instructions, but what I don't understand is why are there three different instructions for two different processes? STA is for copying data from accumulator to memory location, LDA is for copying data from…
Lucenzo97
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Installing codecs for mov to mp4 conversion ffmpeg

I have been trying to convert a .mov file to a .mp4 file for a while now i think this is the correct code to do it. ffmpeg -i P1010989.MOV -vcodec copy -acodec copy out.mp4 But here is my output FFmpeg version 0.6.5, Copyright (c) 2000-2010 the…
user1503606
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X86: What does `movsxd rdx,edx` instruction mean?

I have been playing with intel mpx and found that it adds certain instructions that I could not understand. For e.g. (in intel format): movsxd rdx,edx I found this, which talks about a similar instruction - MOVSX. From that question, my…
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