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• ffmpeg : audio to opus and embed song cover to lossless vp9 in webm container

  14 mars 2020, par snow344

  im having some trouble in making a lossless webm of a audio file

  mpv plays it fine, but youtube won’t process it no matter what

  ffmpeg -i "audio.flac" -c:v vp9 -c:a libopus -lossless 1 -b:a 500k -pix_fmt yuv420p test.webm
  
  
  
      Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
  
      Stream #0:1: Video: mjpeg (Progressive), yuv444p(pc, bt470bg/unknown/unknown), 800x800 [SAR 300:300 DAR 1:1], 90k tbr, 90k tbn, 90k tbc (attached pic)
  
      Metadata:
  
        comment         : Cover (front)
  
  File 'test.webm' already exists. Overwrite? [y/N] y
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (mjpeg (native) -> vp9 (libvpx-vp9))
  
    Stream #0:0 -> #0:1 (flac (native) -> opus (libopus))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 0000028ef88c6000] deprecated pixel format used, make sure you did set range correctly
  
  [libvpx-vp9 @ 0000028ef854cf00] v1.8.2
  
  Output #0, webm, to 'test.webm':
  
      Stream #0:0: Video: vp9 (libvpx-vp9), yuv420p(progressive), 800x800 [SAR 1:1 DAR 1:1], q=-1--1, 90k fps, 1k tbn, 90k tbc (attached pic)
  
      Metadata:
  
        comment         : Cover (front)
  
        encoder         : Lavc58.73.101 libvpx-vp9
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  
      Stream #0:1: Audio: opus (libopus), 48000 Hz, stereo, s16, 500 kb/s
  
      Metadata:
  
        encoder         : Lavc58.73.101 libopus
  
  frame=    1 fps=0.2 q=0.0 Lsize=   15327kB time=00:04:11.17 bitrate= 499.9kbits/s speed=53.7x
  
  video:386kB audio:14853kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.574758%

  thanks in advance

• FFmpeg : How can I loop a single frame of video to cover the length of audio track

  6 avril 2020, par John Bergqvist

  I have a VOB file holding an MPEG-2 video track with an AC-3 audio track. The video track of that VOB file consists of a single frame, which when played in a DVD player, holds that still frame until the audio track has finished.

  



  How can I (with FFMPEG ideally), loop that frame to make a "normal" video track that lasts for the length of the audio track, rather than just a single frame ?

  



  ffmpeg version N-91999-g148a21611d Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 8.2.1 (GCC) 20180813
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
  libavutil      56. 19.101 / 56. 19.101
  libavcodec     58. 30.100 / 58. 30.100
  libavformat    58. 18.102 / 58. 18.102
  libavdevice    58.  4.103 / 58.  4.103
  libavfilter     7. 32.100 /  7. 32.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mpeg, from '.\SINGLEFRAME.VOB':
  Duration: 00:00:47.94, start: 0.336711, bitrate: 439 kb/s
    Stream #0:0: Data: dvd_nav_packet
    Stream #0:1: Video: mpeg2video (Main), yuv420p(tv), 720x576 [SAR 16:15 DAR 4:3], 8000 kb/s, 25 tbr, 90k tbn, 50 tbc
    Stream #0:2: Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s


  


• How to embed cover art into MP4 without errors ?

  7 mai 2020, par symonxd

  I want to add artwork to my MP4 file. How do I do this successfully / without errors ?
I've tried these methods with numerous MP4 files, none worked.
If you would like to replicate the errors / bugs, here are the sample files I've used for this question.

  



  I've tried the following :

  



  ---

  



  

  1. ffmpeg -i sample.mp4 -i sample.png -map 0 -map 1 -c copy -disposition:v:0 attached_pic sample_w_artwork.mp4
as stated by Lukas

  


  



  with this error :

  



  [mp4 @ 0000019ee4852280] Could not find tag for codec h264 in stream #0, codec not currently supported in container
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument


  



  ffmpeg 4.2.2 (Windows build by Zeranoe)

  



  

  2. atomicparsley sample.mp4 --artwork sample.png --overWrite

  


  



  with no success ; AtomicParsley

  



  I get this message when executing the first time :

  



  Started writing to temp file.
 Progress: =============================================>100%|
 Finished writing to temp file.


  



  Executing the next (nth) time gives this :

  



  Updating metadata...   completed.


  



  

  3. Adding artwork through the GUI Tag Editor using both available versions : i686-w64 & x86_64-w64

  


  



  with no success ; it creates a sample.mp4.bak file, even though the software says that the operation was successful

  



  


  can't insert any more links, because I got too little rep apparently

  


  



  

  4. Mp3tag (mp3tag.de/en)

  


  



  with no success ; I can successfully add the image as a cover, but it's not visible in the File Explorer. After saving it says Saved tag in 1 of 1 files. The picture can been seen in Mp3tag though as if it's applied.

  



  

  5. Tag&Rename (softpointer.com)

  


  



  with no success ; same story as with Mp3tag, I can apply and it's visible in the app, but not in File Explorer.

  



  

  6. mp4v2 (https:// code.google.com/archive/p/mp4v2/downloads)

  


  



  mp4tags.exe -picture sample.png sample.mp4

  



  with no success ; it executes with no (error)message

  



  I found it on this thread

  



  (https:// forum.videohelp.com/threads/388025-How-to-set-the-thumbnail-of-a-video-clip).

  



  Have used the updated version which is the Windows build

  



  (https:// forum.doom9.org/attachment.php ?attachmentid=14314&d=1407985798).

  



  

  7. iTunes

  


  



  iTunes 12.10.6.2 (Microsoft Store version)

  



  iTunes doesn't load the file into the library. I can run it fine though in QuickTime Player.

  



  I didn't notice the 'Home Videos' tab. Now I can see it in there. I tried to apply the image, and it applied it only inside iTunes... So it's still not working for me.

  



  I tried to convert the MP4 to M4A and then adding it to iTunes. I was finally successfully able to change the cover and it was visible in File Explorer. But that's not what I want.

  



  I know for a fact that it's possible, because I've seen pictures on the Internet and YT and different threads where an answer is upvoted.

  



  

  8. tag

  


  



  https:// github.com/b4winckler/tag

  



  The description is : Simple command line audio tag editor... After having to install millions of libraries and a package manager I was stuck with the compilation of the software, followed all the steps, didn't work.

  



  I've also tried using MP4art as suggested by a comment on another issue about this. He didn't include a link to it so I went looking and found another issue about this. One comment recommended MP4art as well, with a link that's dead.

  



  ---

  



  I believe I've used some other methods as well but can't think of them right now. Will update if I recall.

  



  Any help is greatly appreciated.