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  • how can I transform 6 audio channels into one 5.1 channel with ffmpeg ?

    3 février 2014, par user2216280

    I have a pro-res file which has 6 mono audio channels.
    here's the ffmpeg console :

        :\test-remapping>ffmpeg -i MelleParadis_PART1_CONSTANTE.mov
    
ffmpeg version N-60106-ge6d1c66 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Jan 22 2014 22:01:26 with gcc 4.8.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
    
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
    
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
    
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
    
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
    
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
    
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib
    
  libavutil      52. 63.100 / 52. 63.100
    
  libavcodec     55. 49.100 / 55. 49.100
    
  libavformat    55. 25.101 / 55. 25.101
    
  libavdevice    55.  5.102 / 55.  5.102
    
  libavfilter     4.  1.100 /  4.  1.100
    
  libswscale      2.  5.101 /  2.  5.101
    
  libswresample   0. 17.104 /  0. 17.104
    
  libpostproc    52.  3.100 / 52.  3.100
    
Guessed Channel Layout for  Input Stream #0.1 : mono
    
Guessed Channel Layout for  Input Stream #0.2 : mono
    
Guessed Channel Layout for  Input Stream #0.3 : mono
    
Guessed Channel Layout for  Input Stream #0.4 : mono
    
Guessed Channel Layout for  Input Stream #0.5 : mono
    
Guessed Channel Layout for  Input Stream #0.6 : mono
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MelleParadis_PART1_CONSTANTE.mov':
    
  Metadata:
    
    major_brand     : qt
    
    minor_version   : 537199360
    
    compatible_brands: qt
    
    creation_time   : 2013-11-27 18:58:26
    
  Duration: 00:07:34.32, start: 0.000000, bitrate: 117742 kb/s
    
    Stream #0:0(eng): Video: prores (apcn / 0x6E637061), yuv422p10le, 1920x1080,
    
 113098 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
      timecode        : 01:00:00:00
    
    Stream #0:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:2(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:3(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:4(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:5(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:6(eng): Audio: pcm_s16le (sowt / 0x74776F73), 48000 Hz, mono, s16,
    
 768 kb/s (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 18:58:26
    
      handler_name    : Gestionnaire dıalias Apple
    
    Stream #0:7(eng): Data: none (tmcd / 0x64636D74) (default)
    
    Metadata:
    
      creation_time   : 2013-11-27 19:03:46
    
      handler_name    : Gestionnaire dıalias Apple
    
      timecode        : 01:00:00:00``

    I would like to transform them into one 5.1 audio channel

    I try this line of code :

    D:\test-remapping>ffmpeg -i "MelleParadis_PART1_CONSTANTE.mov" -c copy -c:a ac3 -map 0 mlle5.1.mov

    the console replies "NOT ENOUGH SPACE" and stop...
    of course there's still some space in my hard drive...
    How could I map all the 6 mono streams into 5.1 ?
    thanks in advance.
    pauline

  • Using ffmpeg results in undesirable motion blur

    13 septembre 2020, par Oleg Yablokov

    I am trying to convert a video with the best quality possible. The problem is, no matter which command arguments I use, a motion blur appears (the first image is converted, the second is the original) :

    


    Converted Original

    


    The ffprobe's output of the original video :

    


    ffmpeg version 4.2.2-1ubuntu1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 9 (Ubuntu 9.3.0-3ubuntu1)
configuration: --prefix=/usr --extra-version=1ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
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
libavresample   4.  0.  0 /  4.  0.  0
libswscale      5.  5.100 /  5.  5.100
libswresample   3.  5.100 /  3.  5.100
libpostproc    55.  5.100 / 55.  5.100
Input #0, mpegts, from 'input.ts':
Duration: 00:00:30.24, start: 1.400000, bitrate: 26265 kb/s
Program 1
    Metadata:
    service_name    : Service01
    service_provider: FFmpeg
    Stream #0:0[0x100]: Video: mpeg2video (Main) ([2][0][0][0] / 0x0002), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0:1[0x101](ita): Audio: ac3 ([129][0][0][0] / 0x0081), 48000 Hz, 5.1(side), fltp, 448 kb/s (clean effects)


    


    I've tried different combinations of the following arguments :

    


    ffmpeg \
-i input.ts \
-c:v libx264 \
-preset veryslow \
-qp 0 \
-minrate 25165824 \
-b:v 25165824 \
-r 25 \
-s 1920x1080 \
-aspect 16:9 \
-g 25 \
-crf 7 \
output.ts


    


    None of these settings helped. Please, could you tell me how to remove this motion blur ?

    


    EDIT : to be more specific, I leave a link to a shorten video ( 10 seconds). If you manage to convert it to hls (h.264 & .m3u8) without motion blur and with preserving the overall quality, it will be equivalent to the answer.

    


  • ffmpeg convert MJPEG to H.265

    19 juillet 2023, par Андрей Тернити

    I want use ffmpeg to encode MJPEG -> h265. I need use some thread amount. For example 10 threads.

    


    But my code use all cores of my CPU... Why it ignore numa-pools ?

    


    ffmpeg -loglevel verbose -i v.raw -pix_fmt yuv420p -c:v libx265 -vtag hvc1 outf.mp4 -x265-params numa-pools="10"


    


    ffmpeg says :

    


    ...
x265 [info]: Thread pool created using 16 threads
...


    


    It is true. I also can see that all my cores are busy in htop.

    


    This code use all cores of my CPU too...

    


    ffmpeg -loglevel verbose -threads 1  -i v.raw -pix_fmt yuv420p -c:v libx265 -vtag hvc1 outf.mp4 -x265-params numa-pools="10"


    


    $ ffmpeg —version

    


    ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared


    


    I have raw MJPEG video file. 3840x2160, 25fps, YUYV 4:2:2. I got it this way. (Now I set stream-count=2 to decrease size of my file for users, usually I set 1000)

    


    v4l2-ctl --device=/dev/video0 --set-fmt-video=width=3840,height=2160,pixelformat=MJPG --stream-mmap --set-parm=25 --stream-to=v.raw --stream-count=2


    


    Here you can download v.raw

    


    P.S. I also try drop ffmpeg and use x265 cli directly, but... What is outf.hevc ? No one player can open this...

    


    x265 --input v.raw --fps 25 --input-res 3840x2160 --output outf.hevc


    


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