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• Revision bead2e8fb4 : Support for a fast diamond search Adds a fast diamond search which is about 5%

  8 mars 2014, par Deb Mukherjee

  Changed Paths :
   Modify /vp9/encoder/vp9_mcomp.c

  
   Modify /vp9/encoder/vp9_mcomp.h

  
   Modify /vp9/encoder/vp9_onyx_if.c

  
   Modify /vp9/encoder/vp9_onyx_int.h

  
   Modify /vp9/encoder/vp9_pickmode.c

  
   Modify /vp9/encoder/vp9_rdopt.c

  
  
  Support for a fast diamond search

  Adds a fast diamond search which is about 5% faster than FAST_HEX
  with only a 0.1% drop in psnr when turned on for both speeds 5 and 7.
  This search is turned on for speed 7.

  Change-Id : I497630aa88a5148926086bb3038e7975e5f4eb98

• .NET Wrapper ffmpeg convert to mp4 set size to 1920 x 1080

  1er août 2020, par Robert

  I in my application written in .NET Core I use ffmpeg to convert movie from 3gp to mp4.

  


  var conversionOptions = new ConversionOptions
{
   MaxVideoDuration = TimeSpan.FromSeconds(60),
   VideoAspectRatio = VideoAspectRatio.R16_9,
   VideoSize = VideoSize.Hd1080,
   AudioSampleRate = AudioSampleRate.Hz44100,
   //  CustomWidth = 200
};
                    
await ffmpeg.ConvertAsync(inputFile, outputFileMp4, conversionOptions);


  


  Convertion works fine, but my source movie is from mobile phone. Its frame size is 1920 x 1080 but the movie is higher than wider.
After conversion with above code the frame is the same but the movie is cuted and it is wider than taller.
I wanted to have original size

  


• How to force ffmpeg to use all the images in a directory ?

  7 septembre 2016, par Learnaholic

  I have a directory of images, (*.png)s, and I am trying to make a movie out of them using ffmpeg.

  The images are named in multiple of 50, so I have : images_0000.png, then, images_0050.png, then images_0100.png, then images_0150.png, etc, all the way to images_4950.png, and so I have 100 images in total.

  I use the following command to make my movie :

  ffmpeg -r 10 -pattern_type glob -i '*.png' -c:v libx264 movie.mp4

  This works fine to make the movie, however when I play it, does not look like every image is being used. That is, if I step through frame by frame, I see that some images are not being displayed, and it looks like they were skipped. (I know because every image has it’s name written on it).

  So, how do I force ffmpeg to use every image in the directory, such that every step forward in the movie, will show the corresponding image ?

  Thanks.

  EDIT : Here is the complete screen dump of the command :