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• Could not write header for output file #0 (incorrect codec parameters ?) after using newer FFmpeg version

  8 septembre 2022, par Hyron

  I've created this small FFmpeg script which works fine on the Ubuntu FFmpeg version. But now I need to use it on a windows machine. On it im using the latest FFmpeg version i could find. Now my script is not working any more due to some updated arguments i guess. But i don't know how to solve it. I tried Multiple different ways with dealing with the 2 video streams i need but none worked.

  


  ffmpeg.exe -rtsp_transport tcp -an -i rtsp://192.168.2.150/axis-media/media.amp -flags +cgop -g 25 -sc_threshold 0 -map 0:v:0 -map 0:v:0 -c:v:0 h264 -filter:v:0 "scale=w=640:h=360:force_original_aspect_ratio=decrease" -b:v:0 365k -fps_mode auto -c:v:1 copy -fps_mode auto -var_stream_map "v:0 v:1" -master_pl_name "master.m3u8" -fflags flush_packets -an -copyts -f hls -strftime 1 -strftime_mkdir 1 -hls_time 6 -hls_playlist_type event -hls_flags second_level_segment_index -hls_segment_filename "stream_%v/%Y-%m-%d_%H:%M/data%%06d.ts"  "stream_%v.m3u8"


  


  other then the ffmpeg call at the beginning and the -fps_mode, nothing else changed.

  


  This is the error :

  


  Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 --


  


  The versions :
Ubuntu : 4.3.4
Windows 5.1.1

  


• How to Add Spacing Between Bars in showfreqs Visualization in FFmpeg

  21 janvier, par Jad Alaouie

  I'm trying to create a video visualization using FFmpeg that shows an audio waveform with bars representing frequency data using the showfreqs filter. However, I would like to add some space between the bars in the bar chart-style visualization, but the showfreqs filter doesn't seem to provide a built-in option for controlling the spacing.

  


  filter_complex = (
        # Create bar chart style visualization with reduced overlap for spacing
        "[0:a]aformat=channel_layouts=mono," +
        "showfreqs=mode=bar:ascale=log:fscale=log:win_size=900:size=1920x300:" +  # Adjust win_size for overall effect
        "colors=white:win_func=blackman:overlap=0.05[vis];" +  # Reduce overlap
        # Insert space by scaling and resizing the visualization
        "[1][vis]overlay=(W-w)/2:(H-h)/2-150:format=auto[bg_with_wave];" +
        # Add play button
        "[2]scale={0}:{1}[play_button];" +
        # Combine everything, with added space between bars by manipulating output size
        "[bg_with_wave][play_button]overlay=(W-w)/2:(H-h)/2:format=auto[v];" +
        "[v]scale=1.2*iw:1.2*ih[v_rescaled]"  # Increase space by scaling video output
    ).format(play_button_width, play_button_height)


  


• How to compress the video using of ffmpeg

  8 janvier 2016, par New Developer

  Hi I am trying to capture the video and compress the video using of ffmpeg and upload to server.

  I am trying like this :

  private void compress(String path,String storePath){
  
          System.out.println("path==> "+path);
  
          System.out.println("storePath==> "+storePath);
  
           final Clip clip_in = new Clip(path); 
  
  
  
           Activity activity = (Activity) VideocameraActivity.this;
  
           File fileTmp = activity.getCacheDir(); 
  
           File fileAppRoot = new File(activity.getApplicationInfo().dataDir);
  
  
  
           final Clip clip_out = new Clip(storePath);
  
           //put flags in clip
  
           clip_out.videoFps = "30";
  
           clip_out.width = 480;
  
           clip_out.height = 320;
  
           clip_out.videoCodec = "libx264";
  
           clip_out.audioCodec = "copy";
  
  
  
           try {
  
               FfmpegController fc = new FfmpegController(this, fileAppRoot);
  
               fc.processVideo(clip_in, clip_out, false, new ShellUtils.ShellCallback() {
  
  
  
                   @Override
  
                   public void shellOut(String shellLine) {
  
                       System.out.println("MIX> " + shellLine);
  
                   }
  
  
  
                   @Override
  
                   public void processComplete(int exitValue) {
  
  
  
                       if (exitValue != 0) {
  
                           System.err.println("concat non-zero exit: " + exitValue);
  
                           Log.d("ffmpeg","Compilation error. FFmpeg failed");
  
                           Toast.makeText(VideocameraActivity.this, "result: ffmpeg failed", Toast.LENGTH_LONG).show();
  
                       } else {
  
                           if(new File( "/storage/emulated/0/Developer/result2.mp4").exists()) {
  
                               Log.d("ffmpeg","Success file:"+ "/storage/emulated/0/Developer/result2.mp4");
  
                           }
  
                       }
  
                   }
  
               });
  
           } catch (FileNotFoundException e) {
  
               // TODO Auto-generated catch block
  
               e.printStackTrace();
  
           } catch (IOException e) {
  
               // TODO Auto-generated catch block
  
               e.printStackTrace();
  
           } catch (InterruptedException e) {
  
               // TODO Auto-generated catch block
  
               e.printStackTrace();
  
           } catch (Exception e) {
  
               // TODO Auto-generated catch block
  
               e.printStackTrace();
  
           }
  
  
  
      }

  I downloaded the lib from this site.

  Now I am getting this error :-

  Exit Value :- 11

  /data/data/com.androidexample.camera/app_bin/ffmpeg -y -i /file:/mnt/sdcard/Pictures/MyCameraVideo/VID_20160108_220044.mp4 -s 480x320 -r 30 -vcodec libx264 -acodec copy /file:/mnt/sdcard/Pictures/VideoCompress/VID_20160108_220045.mp4

  Path print like this :-

  path==>  file:///mnt/sdcard/Pictures/MyCameraVideo/VID_20160108_222223.mp4
  
  
  
  storePath==> file:///mnt/sdcard/Pictures/VideoCompress/VID_20160108_222224.mp4

  Please help me to compress the video.