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Sur d’autres sites (4250)

  • How can I convert a mp4 into an ogv with ffmpeg ? I am getting a "segmentation fault"

    8 mars 2020, par xrainbowuk

    I am trying to use ffmpeg to convert a mp4 video into an ogv and a webm. I am using a Mac and this is what I am putting into the terminal :

    ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora -codec:a libvorbis -f ogv output.ogv

    This is what I am getting in response :

        ffmpeg version 4.2.2 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with Apple clang version 11.0.0 (clang-1100.0.33.17)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.2_2 --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-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --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 --disable-libjack --disable-indev=jack
    
  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, mov,mp4,m4a,3gp,3g2,mj2, from 'Hands-typing-(mobile-1080p-loop) copy.mp4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 0
    
    compatible_brands: mp42mp41
    
    creation_time   : 2020-03-04T20:14:21.000000Z
    
  Duration: 00:00:21.18, start: 0.000000, bitrate: 8201 kb/s
    
    Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 8085 kb/s, 30 fps, 30 tbr, 30k tbn, 60k tbc (default)
    
    Metadata:
    
      creation_time   : 2020-03-04T20:14:21.000000Z
    
      handler_name    : ?Mainconcept Video Media Handler
    
      encoder         : AVC Coding
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 125 kb/s (default)
    
    Metadata:
    
      creation_time   : 2020-03-04T20:14:21.000000Z
    
      handler_name    : #Mainconcept MP4 Sound Media Handler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> theora (libtheora))
    
  Stream #0:1 -> #0:1 (aac (native) -> vorbis (libvorbis))
    
Press [q] to stop, [?] for help
    
zsh: segmentation fault  ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora   -f

    I have also tried this, which doesn’t work :

    ffmpeg -i "Hands-typing-(mobile-1080p-loop) copy.mp4" -codec:v libtheora -qscale:v 3 -codec:a libvorbis \
    
  -qscale:a 3 -f ogv output.ogv

    I am struggling to find the answer to my question. Especially as there are so many posts about "segmentation faults".

    Any help is very much appreciated.

  • Looking for a general purpose way to merge audio and video file and make an output have stereo audio with FFmpeg

    21 février 2020, par Pineapple Joe

    So have have the following FFmpeg command

    ffmpeg -i vidab.mp4 -i recab.webm  -filter_complex "[0:a]volume=0.2,apad[A];[1:a][A]amerge[Aout]" -map 0:v -map [Aout] -y mergeab.mp4

    When the input files are played separately their audio is played equally through both headphones.

    But after being merged the audio from the video is on the right side and the audio from the webm file is on the left side.

    I see this in the output when I run the cmd

    [Parsed_amerge_2 @ 0x7fa0faf01bc0] No channel layout for input 1
    
[Parsed_amerge_2 @ 0x7fa0faf01bc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels

    How can I adjust this so that the output file has the audio from both the inputs in equally in the left and right sides ?

    Also is there a generic way to do this such that even different configurations (video has stereo and audio has mono ... or both have stereo) result in the Audio being split evenly.

    I tried using the pan filter but there is something I am not understanding about how it works because either nothing happens or I flip left and right. But I am not getting even stereo.

    fwiw here is the full output.

    ffmpeg -i vidab.mp4 -i recab.webm  -filter_complex "[0:a]volume=0.2,apad[A];[1:a][A]amerge[Aout]" -map 0:v -map [Aout] -y mergeab.mp4
    
ffmpeg version 4.2.1 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with Apple clang version 11.0.0 (clang-1100.0.33.8)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.2.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/adoptopenjdk-13.jdk/Contents/Home/include/darwin -fno-stack-check' --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librubberband --enable-libsnappy --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --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 --disable-libjack --disable-indev=jack
    
  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, mov,mp4,m4a,3gp,3g2,mj2, from 'vidab.mp4':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 0
    
    compatible_brands: qt  
    
    creation_time   : 2020-02-21T00:35:25.000000Z
    
  Duration: 00:00:10.65, start: 0.000000, bitrate: 2539 kb/s
    
    Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, mono, fltp, 96 kb/s (default)
    
    Metadata:
    
      creation_time   : 2020-02-21T00:35:25.000000Z
    
      handler_name    : Core Media Audio
    
    Stream #0:1(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1280x640, 2436 kb/s, 29.87 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
    
    Metadata:
    
      creation_time   : 2020-02-21T00:35:25.000000Z
    
      handler_name    : Core Media Video
    
      encoder         : H.264
    
Input #1, matroska,webm, from 'recab.webm':
    
  Metadata:
    
    encoder         : opus-media-recorder
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #1:0(eng): Audio: opus, 48000 Hz, mono, fltp (default)
    
Stream mapping:
    
  Stream #0:0 (aac) -> volume (graph 0)
    
  Stream #1:0 (opus) -> amerge:in0 (graph 0)
    
  Stream #0:1 -> #0:0 (h264 (native) -> h264 (libx264))
    
  amerge (graph 0) -> Stream #0:1 (aac)
    
Press [q] to stop, [?] for help
    
[libx264 @ 0x7fa0fb004000] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0x7fa0fb004000] profile High, level 3.1
    
[libx264 @ 0x7fa0fb004000] 264 - core 155 r2917 0a84d98 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
[Parsed_amerge_2 @ 0x7fa0faf01bc0] No channel layout for input 1
    
[Parsed_amerge_2 @ 0x7fa0faf01bc0] Input channel layouts overlap: output layout will be determined by the number of distinct input channels
    
Output #0, mp4, to 'mergeab.mp4':
    
  Metadata:
    
    major_brand     : qt  
    
    minor_version   : 0
    
    compatible_brands: qt  
    
    encoder         : Lavf58.29.100
    
    Stream #0:0(und): Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc, progressive), 1280x640, q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    
    Metadata:
    
      creation_time   : 2020-02-21T00:35:25.000000Z
    
      handler_name    : Core Media Video
    
      encoder         : Lavc58.54.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
    Stream #0:1: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc58.54.100 aac
    
frame=  318 fps=107 q=-1.0 Lsize=    1568kB time=00:00:17.72 bitrate= 724.8kbits/s speed=5.99x    
    
video:1282kB audio:272kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.902630%
    
[libx264 @ 0x7fa0fb004000] frame I:2     Avg QP:19.72  size: 51154
    
[libx264 @ 0x7fa0fb004000] frame P:148   Avg QP:21.28  size:  6644
    
[libx264 @ 0x7fa0fb004000] frame B:168   Avg QP:25.18  size:  1351
    
[libx264 @ 0x7fa0fb004000] consecutive B-frames:  1.3% 84.9%  0.0% 13.8%
    
[libx264 @ 0x7fa0fb004000] mb I  I16..4: 23.2% 49.3% 27.5%
    
[libx264 @ 0x7fa0fb004000] mb P  I16..4:  2.1%  2.0%  0.2%  P16..4: 29.0%  5.1%  4.8%  0.0%  0.0%    skip:56.8%
    
[libx264 @ 0x7fa0fb004000] mb B  I16..4:  0.5%  0.3%  0.0%  B16..8: 16.7%  0.8%  0.2%  direct: 6.1%  skip:75.4%  L0:24.8% L1:71.1% BI: 4.1%
    
[libx264 @ 0x7fa0fb004000] 8x8 transform intra:45.4% inter:74.3%
    
[libx264 @ 0x7fa0fb004000] coded y,uvDC,uvAC intra: 29.3% 51.4% 11.6% inter: 5.7% 16.6% 0.3%
    
[libx264 @ 0x7fa0fb004000] i16 v,h,dc,p: 11% 53% 10% 26%
    
[libx264 @ 0x7fa0fb004000] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 13% 36% 35%  2%  2%  2%  4%  2%  3%
    
[libx264 @ 0x7fa0fb004000] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 24% 30% 12%  4%  6%  5%  7%  5%  6%
    
[libx264 @ 0x7fa0fb004000] i8c dc,h,v,p: 47% 33% 17%  4%
    
[libx264 @ 0x7fa0fb004000] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x7fa0fb004000] ref P L0: 76.6%  7.6% 11.1%  4.7%
    
[libx264 @ 0x7fa0fb004000] ref B L0: 89.1% 10.3%  0.6%
    
[libx264 @ 0x7fa0fb004000] ref B L1: 99.7%  0.3%
    
[libx264 @ 0x7fa0fb004000] kb/s:989.60
    
[aac @ 0x7fa0fb005800] Qavg: 13376.354

  • FFMPEG command not working on MP4 files as expected

    21 février 2020, par DavidB

    I am trying to set the output time offset for mp4 file.

    ffmpeg -ss 13.554000 -i input.mp4 -c copy -t 10 -output_ts_offset 13.554000 output.mp4

    This code works for WEBM file as expected but not for MP4.
    In webm it delays start time of video to the specified timestamp and duration is 23.554 but in mp4 it just cuts the video, start time is set to 0 and duration is 10
    Cannot find what is problem.

    ffmpeg -ss 12.960000 -i v.mp4 -c copy -t 10  -output_ts_offset 12.960000 output.mp4
    
ffmpeg version git-2019-12-26-b0d0d7e Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.2.1 (GCC) 20191125
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig
    
 --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --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-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth
    
 --enable-libopenmpt --enable-amf
    
  libavutil      56. 37.100 / 56. 37.100
    
  libavcodec     58. 65.100 / 58. 65.100
    
  libavformat    58. 35.101 / 58. 35.101
    
  libavdevice    58.  9.101 / 58.  9.101
    
  libavfilter     7. 69.101 /  7. 69.101
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'v.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    creation_time   : 1970-01-01T00:00:00.000000Z
    
    encoder         : Lavf53.24.2
    
  Duration: 00:00:29.57, start: 0.000000, bitrate: 1421 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1032 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : SoundHandler
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.35.101
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1032 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 383 kb/s (default)
    
    Metadata:
    
      creation_time   : 1970-01-01T00:00:00.000000Z
    
      handler_name    : SoundHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=  250 fps=0.0 q=-1.0 Lsize=    1687kB time=00:00:09.99 bitrate=1382.7kbits/s speed=2.21e+03x
    
video:1212kB audio:468kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.408804%```

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