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• ffmpeg Unrecognized option 'vcodec libx264'

  8 septembre 2021, par Mike

  I have a lambda that is trying to transcode webm files to mp4. It his the lambda using the following code to do the conversion :

  


  const args = [
    "-i",
    inputFilename,
    "-vcodec libx264",
    "-r 30",
    "-y",
    mp4Filename,
];


try {
    const { error, output } = spawnSync(ffmpeg, args);
    console.log(`output: ${output}`);
    console.log(`error: ${error}`);
} catch (error) {
    console.log("ffmpeg failed...");
    console.log(error);
}


  


  In my lambda, I'm seeing the following error :

  


  output: ,,ffmpeg version 4.2.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Unrecognized option 'vcodec libx264'.
Error splitting the argument list: Option not found

2021-09-08T15:19:46.644Z 9477062f-6afa-4a94-9900-6b28337d8c2a INFO output: ,,ffmpeg version 4.2.2-static https://johnvansickle.com/ffmpeg/ Copyright (c) 2000-2019 the FFmpeg developers built with gcc 8 (Debian 8.3.0-6) configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg libavutil 56. 31.100 / 56. 31.100 libavcodec 58. 54.100 / 58. 54.100 libavformat 58. 29.100 / 58. 29.100 libavdevice 58. 8.100 / 58. 8.100 libavfilter 7. 57.100 / 7. 57.100 libswscale 5. 5.100 / 5. 5.100 libswresample 3. 5.100 / 3. 5.100 libpostproc 55. 5.100 / 55. 5.100 Unrecognized option 'vcodec libx264'. Error splitting the argument list: Option not found


  


  I'm using ffmpeg-4.2.2-amd64-static

  


• ffmpeg - Convert files but keep Same Date Modification as Original ?

  9 septembre 2021, par user5894146

  So I want to start with that ffmpeg and powershell isn't really my strength but I have been using the following powershell command to convert every .flac file in a certain directory to a 320K file.

  


  dir *.flac | foreach {ffmpeg -i $_.FullName -c:v copy  -b:a 320k  $_.FullName.Replace('flac', 'mp3')}


  


  This works exactly how I want to without any album art being transcoded but I want to incorporate a way so that the new .mp3 files that are created have the SAME DATE MODIFICATION value of the .flac files. Is something like this even possible ?

  


  audio_ex.flac = Date Modification: 1/1/2010
audio_ex.mp3 = Date Modification: 9/8/2021


  


  should be instead

  


  audio_ex.flac = Date Modification: 1/1/2010
audio_ex.mp3 = Date Modification: 1/1/2010


  


  I have a folder of 6K files and want each original date modified to match the newly created files so if I can do the above command and also have the date mod time match within one execution, that would be ideal.

  


  I thought of manually changing each files mod time using 3rd party tools but it will be too time consuming.

  


• FFMPEG error when finding stream information with custom AVIOContext

  8 septembre 2021, par ryan

  I am writing software that takes in a file as a stream and decodes it. I have the following custom AVIO code for stream input :

  


  /* Allocate a 4kb buffer for copying. */&#xA;std::uint32_t bufSize = 4096;&#xA;struct vidBuf&#xA;{&#xA;    std::byte* ptr;&#xA;    int size;&#xA;};&#xA;&#xA;vidBuf tmpVidBuf = { const_cast(videoBuffer.data()),&#xA;    static_cast<int>(videoBuffer.size()) };&#xA;AVIOContext *avioContext =&#xA;    avio_alloc_context(reinterpret_cast(av_malloc(bufSize)),&#xA;                       bufSize, 0,&#xA;                       reinterpret_cast(&amp;tmpVidBuf),&#xA;                       [](void *opaque, std::uint8_t *buf, int bufSize) -> int&#xA;                       {&#xA;                           auto &amp;me = *reinterpret_cast(opaque);&#xA;                           bufSize = std::min(bufSize, me.size);&#xA;&#xA;                           std::copy_n(me.ptr, bufSize, reinterpret_cast(buf));&#xA;                           me.ptr &#x2B;= bufSize;&#xA;                           me.size -= bufSize;&#xA;                           return bufSize;&#xA;                       }, nullptr, nullptr);&#xA;&#xA;auto avFormatPtr = avformat_alloc_context();&#xA;avFormatPtr->pb = avioContext;&#xA;avFormatPtr->flags |= AVFMT_FLAG_CUSTOM_IO;&#xA;//avFormatPtr->probesize = tmpVidBuf.size;&#xA;//avFormatPtr->max_analyze_duration = 5000000;&#xA;&#xA;avformat_open_input(&amp;avFormatPtr, nullptr, nullptr, nullptr);&#xA;&#xA;if(auto ret = avformat_find_stream_info(avFormatPtr, nullptr);&#xA;   ret &lt; 0)&#xA;    logerror &lt;&lt; "Could not open the video file: " &lt;&lt; makeAVError(ret) &lt;&lt; &#x27;\n&#x27;;&#xA;</int>

  


  However, when I run this code I get the error :

  


  [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55d10736d580] stream 0, offset 0x30: partial file
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55d10736d580] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none(tv, bt709), 540x360, 649 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:04:08.41, start: 0.000000, bitrate: N/A
  Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none(tv, bt709), 540x360, 649 kb/s, SAR 1:1 DAR 3:2, 29.97 fps, 29.97 tbr, 30k tbn, 60k tbc (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/10/2021.
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/10/2021.
      vendor_id       : [0][0][0][0]
Assertion desc failed at libswscale/swscale_internal.h:677


  


  Note the absence of the YUV420p part in the video stream data.

  


  This is strange since if I run my program with a different mp4 file it works perfectly fine, this error only occurs with a specific mp4 file. I know that the mp4 file is valid since mpv can play it, and ffprobe is able to get its metadata :

  


  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'heard.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:04:08.41, start: 0.000000, bitrate: 724 kb/s
  Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 540x360 [SAR 1:1 DAR 3:2], 649 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/10/2021.
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 22050 Hz, mono, fltp, 69 kb/s (default)
    Metadata:
      handler_name    : ISO Media file produced by Google Inc. Created on: 01/10/2021.
      vendor_id       : [0][0][0][0]


  


  As you can see by my code I also tried setting analyzeduration and probesize, but this did not fix the issue.

  


  I also know that this error is because of my custom io because when I have avformat_open_input open the file directly, it is able to be decoded just fine. I am new to ffmpeg, so I might have missed something simple.