Recherche avancée

Sur d’autres sites (8285)

• FFmpeg : Batch convert all audio (mp3) in folder to video (mp4) with album artwork (but it down scales my resolution)

  9 février 2021, par unknownman

  I followed this source (FFmpeg : Batch convert all audio (mp3) in folder to video (mp4) with album artwork) and it works, but it down scales my album cover from 1425 x 1406 dimension to 400 x 396.

  


  My Batch code is

  


  echo off
for %%a in ("*.mp3") do (
  ffmpeg -i "%%a" -an -vcodec copy "C:\mp4\%%~na.jpg"
  "C:\ffmpeg\bin\ffmpeg" -loop 1 -i  "C:\mp4\%%~na.jpg" -i "%%a" -c:v libx264 -vf pad="width=ceil(iw/2)*2:height=ceil(ih/2)*2" -preset veryslow -tune stillimage -crf 18 -pix_fmt yuv420p -c:a aac -shortest -strict experimental -b:a 192k -shortest "C:\mp4\%%~na.mp4" )
pause


  


  Problem is I don't know how to fix "down scaling" thing, and I am sorry for stupid questions but I need to know it. I watched other errors or tried to understand codes from others but I am not doing it well.

  


• How to Merge Multiple video files with different resolution, make padding for the low resolution video in android FFMPEG

  12 février 2021, par Osama aman

  I want to merge multiple videos with different resolutions. if the resolution is low than any other video, it should make a black padding around the low resolution video.

  


  I tried this command

  


      var highestVideoWidth: Int = 0&#xA;    var highestVideoHeight: Int = 0&#xA;&#xA;    val mlisst: MutableList<string> = ArrayList()&#xA;    mlisst.clear()&#xA;    mlisst.add("-i")&#xA;    for (i in trimmedPaths.indices) {&#xA;        if (highestVideoWidth &lt; editedVideosList[i].videoWidth &amp;&amp; highestVideoHeight &lt; editedVideosList[i].videoHeight) {&#xA;            highestVideoWidth = editedVideosList[i].videoWidth&#xA;            highestVideoHeight = editedVideosList[i].videoHeight&#xA;        }&#xA;&#xA;        mlisst.add(trimmedPaths[i])&#xA;        if (i &lt; trimmedPaths.size - 1)&#xA;            mlisst.add("-i")&#xA;    }&#xA;    mlisst.add("-filter_complex")&#xA;    val fc = StringBuilder()&#xA;&#xA;    for (i in trimmedPaths.indices) {&#xA;&#xA;        if (editedVideosList[i].videoWidth == highestVideoWidth &amp;&amp; editedVideosList[i].videoHeight == highestVideoHeight){&#xA;            fc.append("[$i:v]scale=${editedVideosList[i].videoWidth}x${editedVideosList[i].videoHeight},setsar=1:1[v$i];")&#xA;        }else{&#xA;            fc.append("[$i:v]scale=iw*min($highestVideoWidth/iw,${highestVideoHeight}/ih):ih*min(${highestVideoWidth}/iw,${highestVideoHeight}/ih),")&#xA;            fc.append("pad=${highestVideoWidth}:${highestVideoHeight}")&#xA;            fc.append(":(${highestVideoWidth}-iw*min(${highestVideoWidth}/iw,${highestVideoHeight}/ih))/2")&#xA;            fc.append(":(${highestVideoHeight}-ih*min(${highestVideoWidth}/iw,${highestVideoHeight}/ih))/2,setsar1:1[v$i];")&#xA;        }&#xA;    }&#xA;&#xA;    for (i in trimmedPaths.indices) {&#xA;        fc.append("[v$i][$i:a]")&#xA;    }&#xA;    fc.append("concat=unsafe=1:n=${trimmedPaths.size}:v=1:a=1")&#xA;    mlisst.add(fc.toString())&#xA;    mlisst.add("-r")&#xA;    mlisst.add("50")&#xA;    mlisst.add("-preset")&#xA;    mlisst.add("ultrafast")&#xA;    mlisst.add(finalMergedVideoPath)&#xA;</string>

  


  but this gives me this error

  


  Invalid size 'iw*min(1074/iw'
I found the command some where i modified it to my use but now i am not sure. Here is the command : complexCommand = new String[]{"-y", "-i", file1.toString(), "-i", file2.toString(), "-strict", "experimental", "-filter_complex","[0:v]scale=1920x1080,setsar=1:1[v0];[1:v] scale=iw*min(1920/iw\\,1080/ih):ih*min(1920/iw\\,1080/ih), pad=1920:1080:(1920-iw*min(1920/iw\\,1080/ih))/2:(1080-ih*min(1920/iw\\,1080/ih))/2,setsar=1:1[v1];[v0][0:a][v1][1:a] concat=n=2:v=1:a=1","-ab", "48000", "-ac", "2", "-ar", "22050", "-s", "1920x1080", "-vcodec", "libx264","-crf","27","-q","4","-preset", "ultrafast", rootPath + "/output.mp4"};

  


  If anyone can help thanks in advance.
Here is the link to the question i followed

  


• ffmpeg : handle videos with changing resolution

  5 mars 2021, par mSourire

  I write a program, which concatenates input list of videos programmatically. The problem is that these videos are parts of a recorded stream, and their resolution may change few times within the same file.
Currently, if that happens, ffmpeg fails, saying that it's not possible to concat files with different resolutions. Is there a way to make ffmpeg handling this automatically ? A good solution would be selective scaling of frames with unexpected resolution.

  


  Here is a listing :

  


  ffmpeg -y -i 1.mkv -i 1.mka
-max_muxing_queue_size 10000
-preset veryfast -r 30 -crf 20 -b:a 96000 -vbr on
-strict experimental
-filter_complex '
color=black:s=320x240:d=7ms[black0];
aevalsrc=0:d=15ms[silence1];
[black0][0]concat=n=2:v=1:a=0[video];
[1][silence1]concat=n=2:v=0:a=1[audio]'
-map [video] -map [audio] -c:v libvpx -c:a libopus output.webm

ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_9 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, matroska,webm, from '1.mkv':
  Metadata:
    encoder         : GStreamer matroskamux version 1.8.1.1
    creation_time   : 2021-03-02T13:44:03.000000Z
  Duration: 00:01:48.41, start: 0.710000, bitrate: 757 kb/s
    Stream #0:0(eng): Video: vp8, yuv420p(progressive), 320x240, SAR 1:1 DAR 4:3, 120 tbr, 1k tbn, 1k tbc (default)
    Metadata:
      title           : Video
Input #1, matroska,webm, from '1.mka':
  Metadata:
    encoder         : GStreamer matroskamux version 1.8.1.1
    creation_time   : 2021-03-02T13:44:03.000000Z
  Duration: 00:01:48.40, start: 0.703000, bitrate: 38 kb/s
    Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
    Metadata:
      title           : Audio
Codec AVOption preset (Configuration preset) specified for output file #0 (output.webm) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
Stream mapping:
  Stream #0:0 (vp8) -> concat:in1:v0
  Stream #1:0 (opus) -> concat:in0:a0
  concat -> Stream #0:0 (libvpx)
  concat -> Stream #0:1 (libopus)
Press [q] to stop, [?] for help
[libvpx @ 0x7fe08a80bc00] v1.9.0
[libvpx @ 0x7fe08a80bc00] Bitrate not specified for constrained quality mode, using default of 256kbit/sec
Output #0, webm, to 'output.webm':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: vp8 (libvpx), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=-1--1, 256 kb/s, 30 fps, 1k tbn, 30 tbc (default)
    Metadata:
      encoder         : Lavc58.91.100 libvpx
    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, flt, 96 kb/s (default)
    Metadata:
      encoder         : Lavc58.91.100 libopus
[Parsed_color_0 @ 0x7fe089815940] EOF timestamp not reliable
[Parsed_concat_2 @ 0x7fe088501980] Input link in0:v0 parameters (size 640x480, SAR 1:1) do not match the corresponding output link in0:v0 parameters (320x240, SAR 1:1)
[Parsed_concat_2 @ 0x7fe088501980] Failed to configure output pad on Parsed_concat_2
Error reinitializing filters!
Failed to inject frame into filter network: Invalid argument
Error while processing the decoded data for stream #0:0
[libopus @ 0x7fe08a810c00] 1 frames left in the queue on closing
Conversion failed!


  


  Here is the only such video with "floating" resolution, which cannot be concatenated with 320x240 color filter.