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Sur d’autres sites (5675)

  • aacenc : coding style changes

    21 août 2015, par Rostislav Pehlivanov
    aacenc : coding style changes

    This commit only changes the coding style to a saner way
    
of accessing coefficients (makes more sense to get the
    
memory address of a coefficients and start from there
    
rather than adding arbitrary numbers to offset a pointer).
    
Some compilers might detect an out of bounds access easier.
    

    Also the way M/S and IS coefficients are calculated has been
    
changed, but should still have the same result (with the exception
    
that IS now applies from the normal coefficients rather than the
    
pristine ones, this is needed for upcoming commits).
    

    Signed-off-by : Rostislav Pehlivanov <atomnuker@gmail.com>
    • [DH] libavcodec/aaccoder.c
    • [DH] libavcodec/aacenc.c

  • Returned non-zero exit status 1 / error code 1 : b''

    26 août 2015, par pufAmuf

    I’m trying to extract the video height via ffprobe into python, however I am having issues (with some videos).

    Here is my ffprobe command : ffprobe -v quiet -print_format compact=print_section=0:nokey=1:escape=csv -show_entries stream=height "some video here(bla)_25.mp4"

    It returns something like this

    720
    
(empty-line)
    
N/A

    Here is the code I used to extract the output for later processing :

    executecommand = 'ffprobe -v quiet -print_format compact=print_section=0:nokey=1:escape=csv -show_entries stream=height "' + CurrentVideoToBeProcessed + '"'
    

    
VideoHeight = subprocess.check_output(executecommand)

    This is the error that came about :

    subprocess.CalledProcessError : Command ’...’ returned non-zero exit
    status 1

    So when I modified the code to this :

    try:
    
    VideoHeight = subprocess.check_output(executecommand,shell=True,stderr=subprocess.STDOUT)
    
except subprocess.CalledProcessError as e:
    
    raise RuntimeError("command '{}' return with error (code {}): {}".format(e.cmd, e.returncode, e.output))

    This is the error I get :

    RuntimeError : command ’...’ return with error (code 1) : b’’

    I assumed at first the issue was with the file names, but certain videos work and certain don’t, irregardless of the file name.
    This is the output I get in python for videos that work :

    b’360\r\n\r\n’

    Any idea what’s going on ? Thanks !

    Edit
    It turns out the problem is in the file names after all. From what I gather so far at least, numbers in file-names seem to be causing the error.
    Edit2
    I re-ran the code after I closed several cmd instances and I am not getting the error anymore. I don’t know why. I am sure, however that if I were to convert hundreds of videos again I’ll get the error eventually as it has always happened eventually.

  • FFMPEG compiled binaries don't run using MinGW

    9 juin 2015, par Paul Knopf

    I am trying to build windows executables/dlls for Windows XP, and they are not working. They are the correct architecture. They run fine on my Windows 8 device machine.

    I used dependency walker to find missing DLLs, and all were present.

    Here are the compiled executables I am trying to run.

    I ran the windows build script for ffmpeg.

    Here is a dumpbin /headers ffmpeg.exe

    Microsoft (R) COFF/PE Dumper Version 10.00.30319.01
    
Copyright (C) Microsoft Corporation.  All rights reserved.
    

    

    
Dump of file ffmpeg.exe
    

    
PE signature found
    

    
File Type: EXECUTABLE IMAGE
    

    
FILE HEADER VALUES
    
             14C machine (x86)
    
               7 number of sections
    
           51A40 time date stamp Sun Jan 04 15:53:20 1970
    
               0 file pointer to symbol table
    
               0 number of symbols
    
              E0 size of optional header
    
             32F characteristics
    
                   Relocations stripped
    
                   Executable
    
                   Line numbers stripped
    
                   Symbols stripped
    
                   Application can handle large (>2GB) addresses
    
                   32 bit word machine
    
                   Debug information stripped
    

    
OPTIONAL HEADER VALUES
    
             10B magic # (PE32)
    
            2.25 linker version
    
           41400 size of code
    
           4FA00 size of initialized data
    
            1200 size of uninitialized data
    
            14E0 entry point (004014E0)
    
            1000 base of code
    
           43000 base of data
    
          400000 image base (00400000 to 00456FFF)
    
            1000 section alignment
    
             200 file alignment
    
            4.00 operating system version
    
            1.00 image version
    
            4.00 subsystem version
    
               0 Win32 version
    
           57000 size of image
    
             400 size of headers
    
           597A9 checksum
    
               3 subsystem (Windows CUI)
    
             140 DLL characteristics
    
                   Dynamic base
    
                   NX compatible
    
          200000 size of stack reserve
    
            1000 size of stack commit
    
          100000 size of heap reserve
    
            1000 size of heap commit
    
               0 loader flags
    
              10 number of directories
    
               0 [       0] RVA [size] of Export Directory
    
           51000 [    36F0] RVA [size] of Import Directory
    
               0 [       0] RVA [size] of Resource Directory
    
               0 [       0] RVA [size] of Exception Directory
    
               0 [       0] RVA [size] of Certificates Directory
    
               0 [       0] RVA [size] of Base Relocation Directory
    
               0 [       0] RVA [size] of Debug Directory
    
               0 [       0] RVA [size] of Architecture Directory
    
               0 [       0] RVA [size] of Global Pointer Directory
    
           56004 [      18] RVA [size] of Thread Storage Directory
    
               0 [       0] RVA [size] of Load Configuration Directory
    
               0 [       0] RVA [size] of Bound Import Directory
    
           517F0 [     6C4] RVA [size] of Import Address Table Directory
    
               0 [       0] RVA [size] of Delay Import Directory
    
               0 [       0] RVA [size] of COM Descriptor Directory
    
               0 [       0] RVA [size] of Reserved Directory
    

    

    
SECTION HEADER #1
    
   .text name
    
   412BC virtual size
    
    1000 virtual address (00401000 to 004422BB)
    
   41400 size of raw data
    
     400 file pointer to raw data (00000400 to 000417FF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
60500060 flags
    
         Code
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Execute Read
    

    
SECTION HEADER #2
    
   .data name
    
     19C virtual size
    
   43000 virtual address (00443000 to 0044319B)
    
     200 size of raw data
    
   41800 file pointer to raw data (00041800 to 000419FF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
C0700040 flags
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Write
    

    
SECTION HEADER #3
    
  .rdata name
    
    A7D8 virtual size
    
   44000 virtual address (00444000 to 0044E7D7)
    
    A800 size of raw data
    
   41A00 file pointer to raw data (00041A00 to 0004C1FF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
40700040 flags
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Only
    

    
SECTION HEADER #4
    
    .bss name
    
    1200 virtual size
    
   4F000 virtual address (0044F000 to 004501FF)
    
       0 size of raw data
    
       0 file pointer to raw data
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
C0700080 flags
    
         Uninitialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Write
    

    
SECTION HEADER #5
    
  .idata name
    
    36F0 virtual size
    
   51000 virtual address (00451000 to 004546EF)
    
    3800 size of raw data
    
   4C200 file pointer to raw data (0004C200 to 0004F9FF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
C0300040 flags
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Write
    

    
SECTION HEADER #6
    
    .CRT name
    
      3C virtual size
    
   55000 virtual address (00455000 to 0045503B)
    
     200 size of raw data
    
   4FA00 file pointer to raw data (0004FA00 to 0004FBFF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
C0300040 flags
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Write
    

    
SECTION HEADER #7
    
    .tls name
    
      20 virtual size
    
   56000 virtual address (00456000 to 0045601F)
    
     200 size of raw data
    
   4FC00 file pointer to raw data (0004FC00 to 0004FDFF)
    
       0 file pointer to relocation table
    
       0 file pointer to line numbers
    
       0 number of relocations
    
       0 number of line numbers
    
C0300040 flags
    
         Initialized Data
    
         RESERVED - UNKNOWN
    
         RESERVED - UNKNOWN
    
         Read Write
    

    
  Summary
    

    
        1000 .CRT
    
        2000 .bss
    
        1000 .data
    
        4000 .idata
    
        B000 .rdata
    
       42000 .text
    
        1000 .tls

    When I attempt to run the executable on XP, it just closes. There is no "missing dll" messages, nor anything in the event viewer.

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