Newest 'ffmpeg' Questions - Stack Overflow

http://stackoverflow.com/questions/tagged/ffmpeg

Les articles publiés sur le site

  • PHP : How to stream blank video ?

    15 mai 2019, par Marc

    How do I create and stream a blank video with duration pass to url like this:

    It should play a black screen video for 8 seconds. Is this possible?

  • Video file not trimming and copying using FFMpeg in C#

    15 mai 2019, par chapperzuk

    I am trying to clip a video using C# in Visual Studios with FFMpeg. I run the code below and it doesn't come back with any errors, except it doesn't create a new video file.

    I've looked around here to make sure I'm using the correct code, but after multiple attempts it still won't copy.

    string videoFile = @"C:\Users\dave\Documents\video 1.mp4";
string outputFile = @"C:\Users\dave\Documents\video 2.mp4";

Process process = new Process();
process.StartInfo.RedirectStandardOutput = true;
process.StartInfo.RedirectStandardError = true;
process.StartInfo.FileName = @"C:\Users\dave\Documents\ffmpeg.exe";
process.StartInfo.Arguments = "ffmpeg -i " + videoFile + " -ss 00:30:00 -t 00:00:10 -c copy " + outputFile;
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.Start();

    I was expecting to get a video cut from the original video, starting at the 30 second mark and lasting 10 seconds, but nothing is created.

    I am using the latest FFMpeg from https://ffmpeg.zeranoe.com/builds/

    UPDATE If I run the code in command prompt - The file comes out corrupt though

    ffmpeg -i "C:\\Users\\dave\\Documents\\video 1.mp4" -ss 00:30:00 -t 00:00:10 -c copy "C:\\Users\\dave\\Documents\\video 2.mp4"
ffmpeg version N-93851-gdcc999819d Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8.3.1 (GCC) 20190414
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
  libavutil      56. 27.100 / 56. 27.100
  libavcodec     58. 52.101 / 58. 52.101
  libavformat    58. 27.103 / 58. 27.103
  libavdevice    58.  7.100 / 58.  7.100
  libavfilter     7. 51.100 /  7. 51.100
  libswscale      5.  4.101 /  5.  4.101
  libswresample   3.  4.100 /  3.  4.100
  libpostproc    55.  4.100 / 55.  4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\\Users\\dave\\Documents\\video 1.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    creation_time   : 2019-01-15T21:57:04.000000Z
    title           : My Movie
    encoder         : Lavf56.15.102
    description     : This video is about My Movie
  Duration: 00:06:48.22, start: 0.000000, bitrate: 1283 kb/s
    Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 2997 tbc (default)
    Metadata:
      creation_time   : 2019-01-15T21:57:04.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
    Metadata:
      creation_time   : 2019-01-15T21:57:04.000000Z
      handler_name    : SoundHandler
Output #0, mp4, to 'C:\\Users\\dave\\Documents\\video 2.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    description     : This video is about My Movie
    title           : My Movie
    encoder         : Lavf58.27.103
    Stream #0:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 1202 kb/s, 29.97 fps, 29.97 tbr, 11988 tbn, 11988 tbc (default)
    Metadata:
      creation_time   : 2019-01-15T21:57:04.000000Z
      handler_name    : VideoHandler
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 74 kb/s (default)
    Metadata:
      creation_time   : 2019-01-15T21:57:04.000000Z
      handler_name    : SoundHandler
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=    0 fps=0.0 q=-1.0 Lsize=       0kB time=00:00:00.00 bitrate=N/A speed=   0x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

  • ffmpeg Image2pipe command Stuck infinitely while taking image stream from PhantomJS

    15 mai 2019, par Link2 Video

    Let me Explain by my Code what issue i am facing...

    This is my js file for using with PhantomJS. It simple tell it to open a page and take screenshots of it and store them in stdout.

    var page = require("webpage").create();
page.viewportSize = { width: 640, height: 480 };
page.open("http://www.goodboydigital.com/pixijs/examples/12-2/", function() {
setInterval(function() {
page.render("/dev/stdout", { format: "png" });
}, 25);
});

    And this is the cmd command I'm running to receive the captured images in ffmpeg in Windows Command Prompt.

    phantomjs runner.js | ffmpeg -y -c:v png -f image2pipe -r 25 -t 10  -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart dragon.mp4

    This command successfully starts the processes of PhantomJS and ffmpeg. But nothing happens for quite some time, after 15 minutes it gives an error saying:

    "Failed to reallocate parser buffer"

    thats it. I have referenced this code from this site on which the developer claims that it works https://mindthecode.com/recording-a-website-with-phantomjs-and-ffmpeg/

    Please see the attached Image for more explanation. Image of Code

  • How can I apply complex filters more than once with different parameters while avoiding "too many inputs" errors

    15 mai 2019, par Hugh Walxet

    I'm trying to apply the displace complex filter more than once in a video, at specific intervals with no proportional relationship. In each instance, I want to apply the displace filter with slightly different parameters. If I list it twice in the commands for the complex_filter, I get an error saying I have too many inputs.

    I might as well ask, separately, how I could apply the same filter with the same parameters more than once in a video, without re-iterating the same filter more than once in the command line. Put differently, how do I run a filter as specific times without writing the command several times sequentially, each with a different trigger time? 

    C:\Users\Me>ffmpeg -i c:\users\Me\desktop\house2.mp4 -i c:\users\Me\desktop\house3.mp4 -i c:users\Me\desktop\house4.mp4 -filter_complex "shuffleframes=enable='between(t,21,27)':mapping=0 9 2 1 10 5 8 6 7 4 3, shuffleframes=enable='between(t,3,7)':mapping=0 4 9 1 10 5 8 6 2 7 4 3, shuffleframes=enable='between(t,15,19)':mapping=0 6 2 1 10 5 8 3 7 4 9, [0][1][2] displace=enable='between(t,9,10)':edge=wrap, [0][1][2] displace=enable='between(t,20,21)':edge=smear" c:\users\Me\desktop\houseglitch.mp4

  • How to apply complex filters more than once with different parameters while avoiding "too many inputs" errors in ffmpeg ?

    15 mai 2019, par Hugh Walxet

    I'm trying to apply the displace complex filter more than once in a video, at specific intervals with no proportional relationship. In each instance, I want to apply the displace filter with slightly different parameters. If I list it twice in the commands for the complex_filter, I get an error saying I have too many inputs.

    I might as well ask, separately, how I could apply the same filter with the same parameters more than once in a video, without re-iterating the same filter more than once in the command line. Put differently, how do I run a filter as specific times without writing the command several times sequentially, each with a different trigger time?

    C:\Users\Me>ffmpeg -i c:\users\Me\desktop\house2.mp4 -i c:\users\Me\desktop\house3.mp4 -i c:users\Me\desktop\house4.mp4 -filter_complex "shuffleframes=enable='between(t,21,27)':mapping=0 9 2 1 10 5 8 6 7 4 3, shuffleframes=enable='between(t,3,7)':mapping=0 4 9 1 10 5 8 6 2 7 4 3, shuffleframes=enable='between(t,15,19)':mapping=0 6 2 1 10 5 8 3 7 4 9, [0][1][2] displace=enable='between(t,9,10)':edge=wrap, [0][1][2] displace=enable='between(t,20,21)':edge=smear" c:\users\Me\desktop\houseglitch.mp4

Navigation

Sites Web