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• ffmpeg padding doesn't scale when changing resolution

  5 mars 2023, par Martin

  I have a ffmpeg command which takes a bunch of audio files, 3 image files, and renders a video with them.

  


  Image Input Dimmensions :

  


  

  • 1_front.jpg 600w x 593h

  


  • 2_back.jpg 600w x 466h

  


  • 3_cd.jpg 600w x 598h

  


  


  The video has a resolution of w=600 h=593, which is the resolution of the first img.

  


  Here's the full command

  


  ffmpeg
 -r 2 -i "E:\filepath\10. Deejay Punk-Roc - Knock 'em All The Way Out.aiff"
 -r 2 -i "E:\filepath\11. Deejay Punk-Roc - Spring Break.aiff" -r 2 -i "E:\filepath\12. Deejay Punk-Roc - Fat Gold Chain.aiff" 
 -r 2 -i "E:\filepath\1_front.jpg" -r 2 -i "E:\filepath\2_back.jpg" -r 2 -i "E:\filepath\3_cd.jpg" 
 
 -filter_complex 
 "
 [0:a][1:a][2:a]concat=n=3:v=0:a=1[a]; 
 
 [3:v]scale=w=600:h=593,setsar=1,loop=580.03:580.03[v3]; 

 [4:v]pad=600:593:0:63:color=pink,setsar=1,loop=580.03:580.03[v4];
 
 [5:v]scale=w=600:h=593,setsar=1,loop=580.03:580.03[v5];
 
 [v3][v4][v5]concat=n=3:v=1:a=0,pad=ceil(iw/2)*2:ceil(ih/2)*2[v]"
 
  -map "[v]" -map "[a]" -c:a pcm_s32le -c:v libx264 -bufsize 3M -crf 18 -pix_fmt yuv420p -tune stillimage -t 870.04 
  "E:\filepath\vidOutPutCorrect.mkv"



  


  For filter_complex this second part will add padding to the second image so that it does not get stretched or cropped.

  


  [4:v]pad=600:593:0:63:color=pink,setsar=1,loop=580.03:580.03[v4];


  


  Specifically this part

  


  pad=600:593:0:63:color=pink


  


  Which I understand means w=600 and h=593, but i dont know that the last part 0:63 means.

  


  You can see the output has the pink padding correctly


  


  but i want to render the video with a resolution of w=1920 h=1898 instead of w=600 h=593.

  


  So i update the command to have this new resolution :

  


  ffmpeg -r 2 -i "E:\filepath\10. Deejay Punk-Roc - Knock 'em All The Way Out.aiff" -r 2 -i "E:\filepath\11. Deejay Punk-Roc - Spring Break.aiff" -r 2 -i "E:\filepath\12. Deejay Punk-Roc - Fat Gold Chain.aiff" -r 2 -i "E:\filepath\1_front.jpg" -r 2 -i "E:\filepath\2_back.jpg" -r 2 -i "E:\filepath\3_cd.jpg" 

-filter_complex "
[0:a][1:a][2:a]concat=n=3:v=0:a=1[a];

[3:v]scale=w=1920:h=1898,setsar=1,loop=580.03:580.03[v3];

[4:v]pad=1920:1898:0:63:color=pink,setsar=1,loop=580.03:580.03[v4];

[5:v]scale=w=1920:h=1898,setsar=1,loop=580.03:580.03[v5];

[v3][v4][v5]concat=n=3:v=1:a=0,pad=ceil(iw/2)*2:ceil(ih/2)*2[v]"

 -map "[v]" -map "[a]" -c:a pcm_s32le -c:v libx264 -bufsize 3M -crf 18 -pix_fmt yuv420p -tune stillimage -t 870.04 "E:\filepath\slidet.mkv"


  


  my video does in fact now have a resolution of 1920x1798 which is great, but the 2nd image padding portion has the image super small and in a corner

  


  

  


  So this line works :

  


  pad=600:593:0:63:color=pink


  


  but with a different resolution is looks bad with the image in the top left corner

  


  pad=1920:1898:0:63:color=pink


  


  What do I need to change 0:63 to in order to have the image be centered ?

  


  Download files : http://www.mediafire.com/folder/e8ja1n8elszk1lu,dxw4vglrz7polyh,ojjx6kcqruksv5r,lah9rano4svj46o,q5jg0083vbj9y1p,d3pt8ydf3ulqm5m/shared

  


• ServletOutputStream failed to flush :

  18 septembre 2024, par Dawid

  I try to convert m3u8 file to WebM using ffmpeg and stream it onto browser.
I want it to play on browser without using any javascript.
Stream video method :

  


   public void streamVideo(OutputStream os ){

       String url = "m3u8file.m3u8";


        byte[] bytes = new byte[BUFFER];
        int bytesRead = -1;

        ProcessBuilder pb = new ProcessBuilder(
                "ffmpeg",
                "-i", url,
                "-c:v", "libvpx-vp9",  
                "-b:v", "1M",           
                "-c:a", "libopus",      
                "-b:a", "128k",
                "-f", "webm",           
                "pipe:1"                
        );
        pb.redirectErrorStream(true);

        try {
                    Process process = pb.start();
            try (
                    InputStream is = process.getInputStream()){

                while((bytesRead = is.read(bytes)) != -1){
                    os.write(bytes, 0 , bytesRead);
                    os.flush();
                }


            }catch (IOException ex){
                ex.printStackTrace();
            }


        }catch (IOException ex){
            ex.printStackTrace();
        }



    }


}


  


  Web Controller

  


   &#xA; @Autowired&#xA;    private VideoService videoService;&#xA;&#xA;    @GetMapping("/stream")&#xA;    public ResponseEntity<streamingresponsebody> streamVideo(@RequestHeader(value = "Range", required = false) String rangeHeader) {&#xA;        HttpHeaders headers = new HttpHeaders();&#xA;&#xA;        headers.add("Content-Type", "video/webm");&#xA;        headers.add("Accept-Ranges", "bytes");&#xA;&#xA;        StreamingResponseBody responseStream  = os ->{&#xA;            videoService.streamVideo(os);&#xA;        };&#xA;        return new ResponseEntity&lt;>(responseStream, headers, HttpStatus.PARTIAL_CONTENT);&#xA;    }&#xA;</streamingresponsebody>

  


  When I open the /stream I get an error on spring application

  


  "ServletOutputStream failed to flush : java.io.IOException : An established connection was aborted by the software in your host machine"

  


  


  • On firefox in console I got 2 errors
Cant decode multimedia resource :
And Cant decode multimedia resource:Error Code : NS_ERROR_DOM_MEDIA_METADATA_ERR (0x806e0006)
And the window which video will be showing says "No video with supported format and MIME type found"

    


  


  • On Chrome just nothing happens

    


  


  • And on firefox when i open the view-source i see the stream information and then there is jibberish which i suppose are bytes from the video the. The jibberish stops when i got the ServletOutputStream failed to flush : in console in Spring

    


  


  


  Sorry if error codes translation is hard to understand

  


• Can't fix this ffmpeg, NoClassDefFoundError

  15 mars 2023, par noob234

  I am trying to get the video duration with this library import org.bytedeco.javacv.FFmpegFrameGrabber;

  


  When I upload this mp4 video (https://sample-videos.com/video123/mp4/720/big_buck_bunny_720p_1mb.mp4), I get this error message :
java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.ffmpeg.global.avutil

  


  It will break when trying to get the 'grabber' :

  


  private void videoInfo(MultipartFile file) {
    try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(file.getInputStream())) { // on this line it will break :(
        grabber.start();
        long durationMs = grabber.getLengthInTime();
    } catch (FrameGrabber.Exception e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}


  


  This is my build.gradle :

  


  plugins {
    id 'java'
    id 'org.springframework.boot' version '2.7.9'
    id 'io.spring.dependency-management' version '1.0.15.RELEASE'
}

group = 'com.nob234'
version = '0.0.1-SNAPSHOT'

configurations {
    compileOnly {
        extendsFrom annotationProcessor
    }
}

repositories {
    mavenCentral()
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-web'
    compileOnly 'org.projectlombok:lombok'
    annotationProcessor 'org.projectlombok:lombok'
    testImplementation 'org.springframework.boot:spring-boot-starter-test'
    implementation 'org.springdoc:springdoc-openapi-ui:1.6.9'
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    runtimeOnly 'org.postgresql:postgresql'
    // for logging
    implementation 'org.slf4j:slf4j-api:1.7.30'
    implementation 'org.slf4j:jcl-over-slf4j:1.7.30'
    implementation 'org.slf4j:log4j-over-slf4j:1.7.30'
    implementation 'ch.qos.logback:logback-classic:1.2.3'
    implementation 'org.bytedeco:javacv:1.5.8'
}

tasks.named('test') {
    useJUnitPlatform()
}


  


  This is my ffmpeg version :

  


  ffmpeg version 6.0-full_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers
built with gcc 12.2.0 (Rev10, Built by MSYS2 project)
configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enable-gmp --enable-bzlib --enable-lzma --enable-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --enable-libplacebo --enable-opencl --enable-libcdio --enable-libgme --enable-libmodplug --enable-libopenmpt --enable-libopencore-amrwb --enable-libmp3lame --enable-libshine --enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc --enable-libilbc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa --enable-libbs2b --enable-libflite --enable-libmysofa --enable-librubberband --enable-libsoxr --enable-chromaprint
libavutil      58.  2.100 / 58.  2.100
libavcodec     60.  3.100 / 60.  3.100
libavformat    60.  3.100 / 60.  3.100
libavdevice    60.  1.100 / 60.  1.100
libavfilter     9.  3.100 /  9.  3.100
libswscale      7.  1.100 /  7.  1.100
libswresample   4. 10.100 /  4. 10.100
libpostproc    57.  1.100 / 57.  1.100


  


  Please keep in mind that I use Java 8 in this project and I hope this issue is reproducible. If you want more info please leave a comment.