Recherche avancée

Sur d’autres sites (6635)

• Flutter error in Ffmpeg, "Unhandled Exception : ProcessException : No such file or directory" in macOS desktop version

  19 avril 2024, par pratik vekariya

  I'm trying video trim video using ffmpeg, for macOS desktop application.

  


  I have downloaded ffmpeg from here for macOS.

  


  Here is my code

  


      String mainPath = &#x27;Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/&#x27;;&#xA;        mainPath = mainPath.substring(0, mainPath.lastIndexOf("/"));&#xA;    &#xA;                  Directory directoryExe3 = Directory("$mainPath");&#xA;                  var dbPath = path.join(directoryExe3.path,&#xA;                      "App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos");&#xA;//here in "Products/Debug/" folder desktop app will generate&#xA;&#xA;//directoryExe3 path will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug&#xA;&#xA;//and dbPath will be, Users/apple/Workspace/User/2024/Project/videoapp/build/macos/Build/Products/Debug/App.framework/Resources/flutter_assets/assets/ffmpeg/ffmpegmacos&#xA;&#xA;//so when app will run it can access it from this path&#xA;&#xA;//executable code, command for ffmpeg&#xA;&#xA;String transpose_str &#x2B;= "crop=" &#x2B;&#xA;              out_w.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              out_h.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              x!.toInt().toString() &#x2B;&#xA;              ":" &#x2B;&#xA;              y!.toInt().toString() &#x2B;&#xA;              ",";&#xA;          transpose_str &#x2B;= "scale=960:192";&#xA;&#xA;Future<processresult> result_ = Process.run(dbPath, [&#xA;                "-ss",&#xA;                timestamp,&#xA;                "-i",&#xA;                inputFilePath,&#xA;                "-t",&#xA;                endTime,&#xA;                "-vf",&#xA;                transpose_str,&#xA;                "-an",&#xA;                "./temp.mp4",&#xA;              ]); &#xA;</processresult>

  


  Now when I run this in macOS desktop verison, it gives me error at Process.run that in dbPath, Unhandled Exception : ProcessException : No such file or directory.

  


  Any help would be appreciate !

  


  when i run this as desktop version it should get file from assets.

  


• ffmpeg - convert MP4 to Panasonic Lumix playable MJPEG [closed]

  21 août 2024, par Maro Natts

  I'm new to ffmpeg and ffprobe, I started using it to convert videos to show on 3DS and DSi for an art project.

  


  Now I want to show my own videos on a Panasonic LUMIX digicam (DMC-FT2)(JPN), but have had trouble getting the device to play the video.

  


  The digi takes videos in AVCHD Lite and Motion JPEG.

  


  I've tried online converting mp4 to the respective formats + changing file name, but the device only recognises that it's there — refuses to/can't play it.

  


  I also tried using this code to convert to MJPEG :
ffmpeg -i input.mp4 -c:v mjpeg -q:v 2 -an output.mjpeg

  


  But no luck ! Changed the filename to match the others, the camera recognised the file is there, but can't play it.

  


  So I used this code to get the information of a MJPEG video taken on the digi :
/opt/ffmpeg/ffprobe file.mp4 -show_streams  -select_streams v  -print_format json

  


  and got the following, is it possible to convert my own video (mp4) to these settings ? So that it can play on the device ? If so how ?

  


  Thanks !

  


    Metadata:
    major_brand     : qt  
    minor_version   : 537331972
    compatible_brands: qt  pana
    creation_time   : 2024-08-21T21:54:59.000000Z
  Duration: 00:00:06.00, start: 0.000000, bitrate: 12287 kb/s
  Stream #0:0[0x1](eng): Video: mjpeg (Baseline) (jpeg / 0x6765706A), yuvj420p(pc, bt470bg/unknown/unknown), 640x480, 11083 kb/s, 30 fps, 30 tbr, 30 tbn (default)
      Metadata:
        creation_time   : 2024-08-21T21:54:59.000000Z
        vendor_id       : pana
        encoder         : Photo - JPEG
  Stream #0:1[0x2](eng): Audio: pcm_s16be (twos / 0x736F7774), 16000 Hz, 1 channels, s16, 256 kb/s (default)
      Metadata:
        creation_time   : 2024-08-21T21:54:59.000000Z
        vendor_id       : pana
    "streams": [
        {
            "index": 0,
            "codec_name": "mjpeg",
            "codec_long_name": "Motion JPEG",
            "profile": "Baseline",
            "codec_type": "video",
            "codec_tag_string": "jpeg",
            "codec_tag": "0x6765706a",
            "width": 640,
            "height": 480,
            "coded_width": 640,
            "coded_height": 480,
            "closed_captions": 0,
            "film_grain": 0,
            "has_b_frames": 0,
            "pix_fmt": "yuvj420p",
            "level": -99,
            "color_range": "pc",
            "color_space": "bt470bg",
            "chroma_location": "center",
            "refs": 1,
            "id": "0x1",
            "r_frame_rate": "30/1",
            "avg_frame_rate": "30/1",
            "time_base": "1/30",
            "start_pts": 0,
            "start_time": "0.000000",
            "duration_ts": 180,
            "duration": "6.000000",
            "bit_rate": "11083093",
            "bits_per_raw_sample": "8",
            "nb_frames": "180",
            "disposition": {
                "default": 1,
                "dub": 0,
                "original": 0,
                "comment": 0,
                "lyrics": 0,
                "karaoke": 0,
                "forced": 0,
                "hearing_impaired": 0,
                "visual_impaired": 0,
                "clean_effects": 0,
                "attached_pic": 0,
                "timed_thumbnails": 0,
                "non_diegetic": 0,
                "captions": 0,
                "descriptions": 0,
                "metadata": 0,
                "dependent": 0,
                "still_image": 0
            },
            "tags": {
                "creation_time": "2024-08-21T21:54:59.000000Z",
                "language": "eng",
                "vendor_id": "pana",
                "encoder": "Photo - JPEG"
            }
        }
    ]
}



  


• Revision 36889 : Le début d’une page d’info concernant la configuration de FFMPEG sur le ...

  3 avril 2010, par kent1@… — Log

  Le début d’une page d’info concernant la configuration de FFMPEG sur le serveur.
  On vire le PHP du squelette du formulaire de configuration
  On prépare le passage aux pressets