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• Error : The path is not of a legal form while using NReco.VideoConverter

  26 janvier 2017, par Dyon

  I am trying to convert a .flac-file to a .wav-file using NReco.VideoConverter, but I keep getting an error and I do not know why.
  This is the piece of code I am using for the conversion :

          //Create the NReco.VideoConverter.FFMpegConverter object
  
          var ffmpeg = new FFMpegConverter();
  
  
  
          //inputFile will be something like this:
  
          //type: string, "C:\\some\\folder\\fullTrackName" + ".flac"
  
          var inputFile = Path.Combine(downloadFolder + fullTrackNameNoExtension + ".flac");
  
  
  
          //outputFile will be something like this:
  
          //type: string, "C:\\some\\folder\\musicfile" + ".wav"
  
          var outputFile = Path.Combine(downloadFolder + fullTrackNameNoExtension + ".wav");
  
  
  
          //Convert the file using NReco.VideoConverter.FFMpegConverter
  
          ffmpeg.ConvertMedia(inputFile, outputFile, null);

  inputFile/outputFile would be like this, this is what I see when I insert a breakpoint and check the values of in/outputFile :

  string, inputFile/outputFile : "Z :\Downloads\Audio - File (Original Mix).flac" (or .wav)

  And this is the error I receive when I run ffmpeg.ConvertMedia :

  System.ArgumentException: The path is not of a legal form.
  
     at System.IO.Path.LegacyNormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
  
     at System.IO.Path.NormalizePath(String path, Boolean fullCheck, Int32 maxPathLength, Boolean expandShortPaths)
  
     at System.IO.Path.GetFullPathInternal(String path)
  
     at System.IO.File.InternalGetLastWriteTimeUtc(String path, Boolean checkHost)
  
     at NReco.VideoConverter.FFMpegConverter.EnsureFFMpegLibs()
  
     at NReco.VideoConverter.FFMpegConverter.ConvertMedia(Media input, Media output, ConvertSettings settings)
  
     at NReco.VideoConverter.FFMpegConverter.ConvertMedia(String inputFile, String inputFormat, String outputFile, String outputFormat, ConvertSettings settings)
  
     at NReco.VideoConverter.FFMpegConverter.ConvertMedia(String inputFile, String outputFile, String outputFormat)
  
     at APPLICATION_Name.APPLICATION_Class.ConvertFile(String downloadFolder, String fullTrackName, String fullTrackNameNoExtension, String downloadQuality, String downloadType) in X:\APPLICATION_Name\DownloadTrack.cs:line 244

• FFMPEG - filter_complex lut file path giving problems on Windows

  1er novembre 2019, par Taapo

  I’m applying a 3D to a Prores file - and when placed in the same directory as where I execute the ffmpeg command - all is working fine (multiline format for readability) :

  ffmpeg.exe -loglevel warning -i "E:\path\P1200226.MOV" 
  
  -i "c:\path\watermark.png" -filter_complex 
  
  "[0:v]scale="1280x720", 
  
  overlay=W-w-5:H-h-5/2, 
  
  lut3d=file=VLog_to_V709_forV35_ver100.cube,
  
  format=pix_fmts=yuv420p" 
  
  -codec:a copy -codec:v prores -profile:v 0 

  But when I try to set a drive and pathname for the Lut file, things go wrong. I tried several formats :

  lut3d=file=c:\path\VLog_to_V709_forV35_ver100.cube,
  
  lut3d=file="c:\path\VLog_to_V709_forV35_ver100.cube",
  
  lut3d=file='c:\path\VLog_to_V709_forV35_ver100.cube',
  
  lut3d=file=""c:\path\VLog_to_V709_forV35_ver100.cube"",
  
  lut3d=file="c:\\path\\VLog_to_V709_forV35_ver100.cube",

  But none of them work. I get the following error :

  [lut3d @ 0000021191ac0380] [Eval @ 000000bde47fe820] Undefined constant or missing '(' in 'pathVLog_to_V709_forV35_ver100.cube'
  
  [lut3d @ 0000021191ac0380] Unable to parse option value "pathVLog_to_V709_forV35_ver100.cube"
  
  [lut3d @ 0000021191ac0380] [Eval @ 000000bde47fe830] Undefined constant or missing '(' in 'pathVLog_to_V709_forV35_ver100.cube'
  
  [lut3d @ 0000021191ac0380] Unable to parse option value "pathVLog_to_V709_forV35_ver100.cube"
  
  [lut3d @ 0000021191ac0380] Error setting option interp to value pathVLog_to_V709_forV35_ver100.cube.
  
  [Parsed_lut3d_2 @ 0000021191ac0280] Error applying options to the filter.
  
  [AVFilterGraph @ 000002118e5751c0] Error initializing filter 'lut3d' with args 'file=c:pathVLog_to_V709_forV35_ver100.cube'
  
  Error initializing complex filters.
  
  Invalid argument

  How do I form a correct path on Windows, so this can work ?

• Revision 6fb418741f : Inline xform_quant() in encode_block_intra(). Also inline some of the block cal

  11 juillet 2013, par Ronald S. Bultje

  Changed Paths :
   Modify /vp9/encoder/vp9_encodemb.c

  
  
  Inline xform_quant() in encode_block_intra().

  Also inline some of the block calculations to assist the compiler to
  not do silly things like calculating the same offset (or converting
  between raster/transform block offset or block, mi and pixel unit)
  many, many, many times.

  Cycle times :
  4x4 : 584 -> 505 cycles (16% faster)
  8x8 : 1651 -> 1560 cycles (6% faster)
  16x16 : 7897 -> 7704 cycles (2.5% faster)
  32x32 : 16096 -> 15852 cycles (1.5% faster)

  Overall, this saves about 0.5 seconds (1min49.8 -> 1min49.3) on the
  first 50 frames of bus (speed 0) @ 1500kbps, i.e. 0.5% overall.

  Change-Id : If3dd62453f8e2ab9d4ee616bc4ea956fb8874b80