Recherche avancée

Sur d’autres sites (3341)

• ffmpeg missing blend filter

  17 juin 2020, par user2927954

  I am working on android project using ffmpeg library. I followed instruction from : https://github.com/guardianproject/android-ffmpeg to build ffmpeg library for android. All are OK.

  



  Now, i am testing filters that corresponding to video filter of this library such as : drawtext, scale, pad, ... Most of them worked fine, but i have problem with "blend" filter.

  



  I try with commands : ffmpeg -i input1.mp4 -i input2.mp4 -filter_complex blend=all_expr='if(eq(mod(X,2),mod(Y,2)),A,B)' -y out.mp4 and recieve error : no such blend filter.

  



  Do you know how i configure to enable this filter ?

  



  Here is the output result :

  



  ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  built on Feb 27 2014 05:23:20 with gcc 4.6 20120106 (prerelease)
  configuration: --arch=arm --cpu=cortex-a8 --target-os=linux --enable-runtime-cpudetect --prefix=/data/data/info.guardianproject.ffmpeg/app_opt --enable-pic --disable-shared --enable-static --cross-prefix=/home/admin/workspace/android-ndk-r9c/toolchains/arm-linux-androideabi-4.6/prebuilt/linux-x86/bin/arm-linux-androideabi- --sysroot=/home/admin/workspace/android-ndk-r9c/platforms/android-3/arch-arm --extra-cflags='-I../x264 -mfloat-abi=softfp -mfpu=neon' --extra-ldflags=-L../x264 --enable-version3 --enable-gpl --disable-doc --enable-yasm --enable-decoders --enable-encoders --enable-muxers --enable-demuxers --enable-parsers --enable-protocols --enable-filters --enable-avresample --enable-libfreetype --disable-indevs --enable-indev=lavfi --disable-outdevs --enable-hwaccels --enable-ffmpeg --disable-ffplay --disable-ffprobe --disable-ffserver --disable-network --enable-libx264 --enable-zlib --enable-muxer=md5
  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/videokit/in.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 0
    compatible_brands: isom3gp4
    creation_time   : 2014-03-04 08:53:01
  Duration: 00:00:15.10, start: 0.000000, bitrate: 7055 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720, 6935 kb/s, SAR 65536:65536 DAR 16:9, 17.18 fps, 34.42 tbr, 90k tbn, 180k tbc
    Metadata:
      creation_time   : 2014-03-04 08:53:01
      handler_name    : VideoHandle
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 16000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 2014-03-04 08:53:01
      handler_name    : SoundHandle
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from '/storage/emulated/0/videokit/7.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf53.12.0
    comment         : Courtesy of National Geographic.  Used by Permission.
  Duration: 00:00:04.20, start: 0.000000, bitrate: 1601 kb/s
    Stream #1:0(und): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 320x240 [SAR 1:1 DAR 4:3], 1472 kb/s, 10 fps, 10 tbr, 10 tbn, 10 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #1:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
No such filter: 'blend'
Error configuring filters.


  



  Thanks

  


• Anomalie #4374 : Sauvegarde au format SQLite impossible avec les dernières version de MariaDB

  7 novembre 2020, par b b

  Un truc comme ça @marcimat ?

  <span class="CodeRay"><span class="line comment">diff --git a/ecrire/req/sqlite_generique.php b/ecrire/req/sqlite_generique.php</span>
  <span class="line comment">index 8ed38dc0a5..00d61660ee 100644</span>
  <span class="line head"><span class="head">--- </span><span class="filename">a/ecrire/req/sqlite_generique.php</span></span>
  <span class="line head"><span class="head">+++ </span><span class="filename">b/ecrire/req/sqlite_generique.php</span></span>
  <span class="change"><span class="change">@@</span> -2429,6 +2429,7 <span class="change">@@</span></span> <span class="keyword">function</span> <span class="function">_sqlite_remplacements_definitions_table</span>(<span class="local-variable">$query</span>, <span class="local-variable">$autoinc</span> = <span class="predefined-constant">false</span>) {
           <span class="string"><span class="delimiter">'</span><span class="content">/((char|varchar)</span><span class="delimiter">'</span></span> . <span class="local-variable">$num</span> . <span class="string"><span class="delimiter">'</span><span class="content">\s</span><span class="content">+not</span><span class="content">\s</span><span class="content">+null(</span><span class="content">\s</span><span class="content">+collate</span><span class="content">\s</span><span class="content">+</span><span class="content">\w</span><span class="content">+)?)</span><span class="content">\s</span><span class="content">*$/is</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="content">1 DEFAULT ''</span><span class="delimiter">"</span></span>,
           <span class="string"><span class="delimiter">'</span><span class="content">/(datetime</span><span class="content">\s</span><span class="content">+not</span><span class="content">\s</span><span class="content">+null)</span><span class="content">\s</span><span class="content">*$/is</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="content">1 DEFAULT '0000-00-00 00:00:00'</span><span class="delimiter">"</span></span>,
           <span class="string"><span class="delimiter">'</span><span class="content">/(date</span><span class="content">\s</span><span class="content">+not</span><span class="content">\s</span><span class="content">+null)</span><span class="content">\s</span><span class="content">*$/is</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">"</span><span class="char">\\</span><span class="content">1 DEFAULT '0000-00-00'</span><span class="delimiter">"</span></span>,
  <span class="line insert"><span class="insert">+</span>        <span class="string"><span class="delimiter">'</span><span class="content">/current_timestamp</span><span class="content">\(</span><span class="content">\)</span><span class="content">/</span><span class="delimiter">'</span></span> => <span class="string"><span class="delimiter">'</span><span class="content">CURRENT_TIMESTAMP</span><span class="delimiter">'</span></span></span>
       );
   
       <span class="comment">// pour l'autoincrement, il faut des INTEGER NOT NULL PRIMARY KEY</span>
   
  </span>
  Télécharger

• NodeJS stream MKV as MP4 video

  29 mars 2024, par SirMissAlot

  I'm trying to stream MKV video as MP4 on the fly with out saving the converted file

  


  first I've tried without conversion :

  


  public async streamById(req: Request, res: Response) {
    const movieId = req.params.id;
    const movie = await MovieModel.findById(movieId);
    if (!movie) {
      return res.status(404).send({ message: 'Movie not found' });
    }

    const filePath = movie.path;

    const stat = fs.statSync(filePath);
    const fileSize = stat.size;
    const range = req.headers.range;

    if (range) {
      const parts = range.replace(/bytes=/, '').split('-');
      const start = parseInt(parts[0], 10);
      const end = parts[1] ? parseInt(parts[1], 10) : fileSize - 1;

      const chunksize = end - start + 1;
      const file = fs.createReadStream(filePath, { start, end });
      const head = {
        'Content-Range': `bytes ${start}-${end}/${fileSize}`,
        'Accept-Ranges': 'bytes',
        'Content-Length': chunksize,
        'Content-Type': 'video/mp4',
      };

      res.writeHead(206, head);
      file.pipe(res);
    } else {
      const head = {
        'Content-Length': fileSize,
        'Content-Type': 'video/mp4',
      };
      res.writeHead(200, head);
      fs.createReadStream(filePath).pipe(res);
    }
  }


  


  which is working but without audio

  


  With ffmpeg I'm getting error : "Error during conversion : Output stream closed"

  


  const command = ffmpeg(file)
    .format('mp4')
    .audioCodec('aac')
    .videoCodec('libx264')
    .outputOptions('-movflags frag_keyframe+empty_moov')
    .outputOptions('-preset veryfast')
    .on('error', (err: any) => {
      console.error('Error during conversion:', err.message);
      res.end();
    })
    .on('end', () => {
      console.log('Conversion complete ');
      res.end();
    });

  // Pipe ffmpeg output directly to the response
  command.pipe(res, { end: true });