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• arm: Create proper .rdata sections for COFF

  11 January 2019, by Martin Storsjö

  arm: Create proper .rdata sections for COFF
  As .rodata isn’t one of the default created sections for COFF, it was
  
  created as a read-write data section. By using the default .rdata
  
  section name for COFF, it automatically becomes a read-only data section.
  
  The existing ".section .rodata" works as intended for ELF though.
  This is based on an original patch and diagnose by Tom Tan
  
  <Tom.Tan@microsoft.com>.
  Signed-off-by: Martin Storsjö <martin@martin.st>
  

  • [DBH] libavutil/aarch64/asm.S
  • [DBH] libavutil/arm/asm.S

• using ffmpeg in Azure function to cut files using c#

  22 January 2019, by abhishekmoondra1989

  I have written an Azure function in C# which will cut a big mp4 files into some small duration. I have copied everything that is required (ffmpeg executeable, video file) in home directory via KUDU console. But when I run the the function it runs for more than 5 minutes and it doesn’t give any files in the home directory.

  Function :

  using System;
  
  using System.Diagnostics;
  
  
  
  public static void Run(string input, TraceWriter log)
  
  {
  
      log.Info("Executing");
  
      using (var process = new Process())
  
      {
  
          process.StartInfo.FileName = @"D:\home\ffmpeg.exe";
  
          process.StartInfo.Arguments = @"-i D:\home\AmnestyInternational.mp4 -ss 00:00:03 -t 00:00:08 -async 1 D:\home\cut.mp4";
  
          process.StartInfo.UseShellExecute = false;
  
          process.StartInfo.RedirectStandardOutput = true;
  
          process.StartInfo.RedirectStandardError = true;
  
          log.Info(Directory.GetCurrentDirectory());
  
          log.Info("Cutting starts:"+DateTime.Now.ToString("h:mm:ss tt"));
  
          process.Start();
  
          string output = process.StandardOutput.ReadToEnd();
  
          process.WaitForExit();
  
          log.Info("Cutting ends :"+DateTime.Now.ToString("h:mm:ss tt"));
  
          log.Info(output);
  
      }
  
  }

  Output seen on Azure function Console:

  2017-03-24T11:06:00.705 Function started (Id=df082f54-719a-415f-b7f1-b10548a213be)
  
  2017-03-24T11:06:00.721 Executing
  
  2017-03-24T11:06:00.721 D:\Windows\system32
  
  2017-03-24T11:06:00.721 Cutting start :11:06:00 AM
  
  2017-03-24T11:07:14  No new trace in the past 1 min(s).
  
  2017-03-24T11:08:14  No new trace in the past 2 min(s).
  
  2017-03-24T11:09:14  No new trace in the past 3 min(s).
  
  2017-03-24T11:10:14  No new trace in the past 4 min(s).
  
  2017-03-24T11:11:00.758 Microsoft.Azure.WebJobs.Host: Timeout value of 00:05:00 was exceeded by function: Functions.ManualTriggerCSharp1.

  When I try to execute this same command on KUDU console or my own PC it only take 1.5 mins and I get a file of the desired duration

  Could anyone please help me with this? What I might be missing?

• Compiling ffmpeg for chromium on Windows

  7 January 2019, by ykhandel

  I am following the instructions here to generate the gn files for Chromium. I have installed the cygwin base package along with diffutils, nasm, make and python.

  Also, I have copied chromium/scripts/cygwin-wrapper to /usr/local/bin

  1. Started C:\Program Files (x86)\Microsoft Visual Studio\2017\Enterprise\Common7\Tools\VsDevCmd.bat

  2. Started C:\cygwin\cygwin.bat

  3. cd to third_party\chromium\scripts

  4. python build_ffmpeg win ia32

  I am getting some warnings plus this:

  Could not create temporary library.
  make: *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102: libavutil/avutil-56.dll] Error 1

  make: *** Waiting for unfinished jobs....

  Could not create temporary library.

  Could not create temporary library.

  make: *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102: libavcodec/avcodec-58.dll] Error 1

  make: *** [/cygdrive/d/src/chromium/src/third_party/ffmpeg/ffbuild/library.mak:102: libavformat/avformat-58.dll] Error 1

  Traceback (most recent call last):

  File "build_ffmpeg.py", line 900, in

  sys.exit(main(sys.argv[1:]))

  File "build_ffmpeg.py", line 502, in main

  options=options)

  File "build_ffmpeg.py", line 876, in ConfigureAndBuild

  configure_args)

  File "build_ffmpeg.py", line 870, in do_build_ffmpeg

  options.config_only, branding, configure_flags)

  File "build_ffmpeg.py", line 408, in BuildFFmpeg

  [’make’, ’-j%d’ % parallel_jobs] + libraries, cwd=config_dir)

  File "build_ffmpeg.py", line 106, in PrintAndCheckCall

  subprocess.check_call(argv, *args, **kwargs)

  File "/usr/lib/python2.7/subprocess.py", line 186, in check_call

  raise CalledProcessError(retcode, cmd)

  subprocess.CalledProcessError: Command ’[’make’, ’-j8’, ’libavcodec/avcodec-
  58.dll’, ’libavformat/avformat-58.dll’, ’libavutil/avutil-56.dll’]’ returned non-zero exit status 2