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Sur d’autres sites (12175)

  • Adding multiple audio files to video with different start times with ffmpeg : Error initializing complex filters : Invalid argument

    19 janvier 2024, par fullStackChris

    Here's my command :

    


    ffmpeg -i ./video/super-simple.mp4 -i ./audio/super-simple/1.wav -i ./audio/super-simple/2.wav -filter_complex \
"[1]adelay=2480|2480[a1]; \
 [2]adelay=8919|8919[a2]; \
 [0][a1][a2]amix=3" -c:v copy -c:a aac -strict experimental ./video/super-simple.mp4.final.mp4


    


    However I get the following output, ending with a cryptic error :

    


    [aist#1:0/pcm_f32le @ 0x7fe723010e00] Guessed Channel Layout: mono
Input #1, wav, from '/audio/super-simple/1.wav':
  Duration: 00:00:04.44, bitrate: 1031 kb/s
  Stream #1:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 32000 Hz, 1 channels, flt, 1024 kb/s
[aist#2:0/pcm_f32le @ 0x7fe72300f4c0] Guessed Channel Layout: mono
Input #2, wav, from '/audio/super-simple/2.wav':
  Duration: 00:00:03.95, bitrate: 1032 kb/s
  Stream #2:0: Audio: pcm_f32le ([3][0][0][0] / 0x0003), 32000 Hz, 1 channels, flt, 1024 kb/s
[fc#0 @ 0x7fe723004340] Stream specifier '' in filtergraph description [1]adelay=2480|2480[a1];  [2]adelay=8919|8919[a2];  [0][a1][a2]amix=3 matches no streams.
Error initializing complex filters: Invalid argument


    


    What is going on here ? I've been reading stackoverflow for hours and I beleive this syntax is correct, but apparently not. Do I need to specify the video somehow for [0] to be recognized, or is that implicit since the video is my first input ?

    


  • ffmpeg : trim / concat results in different length videos

    4 mai 2019, par Mads Lee Jensen

    Im experimenting with the trim and concat filters.

    I wanted to simply split up a video into X chunks, and concat it again. I expected the result would be a video with same frames / duration.

    So i have a video encoded with 1 fps and contains 3 frames, the duration of this video is 3 seconds.

    i run the following script

    ffmpeg -y -i fps.mp4 -an -filter_complex "[0:v]trim=0:1[v1];[0:v]trim=1:2[v2];[0:v]trim=2:3[v3];[v1][v2][v3]  concat=n=3:v=1 [out]" -map [out] out.mp4

    The result is a video with a duration of 4 seconds to inspect the problem i called :

    ffprobe -print_format json -show_frames out.mp4

    It shows that there is now 4 frames ?? (here is the dump)

    ffprobe version 4.1.3 Copyright (c) 2007-2019 the FFmpeg developers
    
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.3)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/openjdk-12.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/openjdk-12.jdk/Contents/Home/include/darwin' --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-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-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
{
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'out.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.20.100
    
  Duration: 00:00:04.00, start: 0.000000, bitrate: 4 kb/s
    
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), yuv444p, 100x100, 2 kb/s, 1 fps, 1 tbr, 16384 tbn, 2 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    "frames": [
    
        {
    
            "media_type": "video",
    
            "stream_index": 0,
    
            "key_frame": 1,
    
            "pkt_pts": 0,
    
            "pkt_pts_time": "0.000000",
    
            "pkt_dts": 0,
    
            "pkt_dts_time": "0.000000",
    
            "best_effort_timestamp": 0,
    
            "best_effort_timestamp_time": "0.000000",
    
            "pkt_duration": 16384,
    
            "pkt_duration_time": "1.000000",
    
            "pkt_pos": "48",
    
            "pkt_size": "857",
    
            "width": 100,
    
            "height": 100,
    
            "pix_fmt": "yuv444p",
    
            "pict_type": "I",
    
            "coded_picture_number": 0,
    
            "display_picture_number": 0,
    
            "interlaced_frame": 0,
    
            "top_field_first": 0,
    
            "repeat_pict": 0,
    
            "chroma_location": "left"
    
        },
    
        {
    
            "media_type": "video",
    
            "stream_index": 0,
    
            "key_frame": 0,
    
            "pkt_pts": 16384,
    
            "pkt_pts_time": "1.000000",
    
            "pkt_dts": 16384,
    
            "pkt_dts_time": "1.000000",
    
            "best_effort_timestamp": 16384,
    
            "best_effort_timestamp_time": "1.000000",
    
            "pkt_duration": 16384,
    
            "pkt_duration_time": "1.000000",
    
            "pkt_pos": "1053",
    
            "pkt_size": "146",
    
            "width": 100,
    
            "height": 100,
    
            "pix_fmt": "yuv444p",
    
            "pict_type": "B",
    
            "coded_picture_number": 2,
    
            "display_picture_number": 0,
    
            "interlaced_frame": 0,
    
            "top_field_first": 0,
    
            "repeat_pict": 0,
    
            "chroma_location": "left"
    
        },
    
        {
    
            "media_type": "video",
    
            "stream_index": 0,
    
            "key_frame": 0,
    
            "pkt_pts": 32768,
    
            "pkt_pts_time": "2.000000",
    
            "best_effort_timestamp": 32768,
    
            "best_effort_timestamp_time": "2.000000",
    
            "pkt_duration": 16384,
    
            "pkt_duration_time": "1.000000",
    
            "pkt_pos": "1199",
    
            "pkt_size": "19",
    
            "width": 100,
    
            "height": 100,
    
            "pix_fmt": "yuv444p",
    
            "pict_type": "B",
    
            "coded_picture_number": 3,
    
            "display_picture_number": 0,
    
            "interlaced_frame": 0,
    
            "top_field_first": 0,
    
            "repeat_pict": 0,
    
            "chroma_location": "left"
    
        },
    
        {
    
            "media_type": "video",
    
            "stream_index": 0,
    
            "key_frame": 0,
    
            "pkt_pts": 49152,
    
            "pkt_pts_time": "3.000000",
    
            "best_effort_timestamp": 49152,
    
            "best_effort_timestamp_time": "3.000000",
    
            "pkt_duration": 16384,
    
            "pkt_duration_time": "1.000000",
    
            "pkt_pos": "905",
    
            "pkt_size": "148",
    
            "width": 100,
    
            "height": 100,
    
            "pix_fmt": "yuv444p",
    
            "pict_type": "P",
    
            "coded_picture_number": 1,
    
            "display_picture_number": 0,
    
            "interlaced_frame": 0,
    
            "top_field_first": 0,
    
            "repeat_pict": 0,
    
            "chroma_location": "left"
    
        }
    
    ]
    
}

    I tried different things, and everything seems to work fine if i split a 2 second video (still 1 fps) up and concat again. But something goes wrong when going beyond that ?

    Here is output from ffmpeg -i fps.mp4

    ffmpeg version 4.1.3 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with Apple LLVM version 10.0.1 (clang-1001.0.46.3)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.1.3 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags='-I/Library/Java/JavaVirtualMachines/openjdk-12.jdk/Contents/Home/include -I/Library/Java/JavaVirtualMachines/openjdk-12.jdk/Contents/Home/include/darwin' --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-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-videotoolbox --disable-libjack --disable-indev=jack --enable-libaom --enable-libsoxr
    
  libavutil      56. 22.100 / 56. 22.100
    
  libavcodec     58. 35.100 / 58. 35.100
    
  libavformat    58. 20.100 / 58. 20.100
    
  libavdevice    58.  5.100 / 58.  5.100
    
  libavfilter     7. 40.101 /  7. 40.101
    
  libavresample   4.  0.  0 /  4.  0.  0
    
  libswscale      5.  3.100 /  5.  3.100
    
  libswresample   3.  3.100 /  3.  3.100
    
  libpostproc    55.  3.100 / 55.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'scripts/fps.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf58.20.100
    
  Duration: 00:00:03.00, start: 0.000000, bitrate: 7 kb/s
    
    Stream #0:0(und): Video: h264 (High 4:4:4 Predictive) (avc1 / 0x31637661), gbrp(tv, gbr/unknown/unknown), 100x100, 4 kb/s, 1 fps, 1 tbr, 16384 tbn, 2 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler

  • ffmpeg concatenate results in bad/garbled output for second input file

    28 février 2017, par Dan

    I am trying to concatenate two videos together using the ffmpeg concat demuxer : a 5-second intro splash and a 60-second main/body video. I understand that the encoding needs to be the same on both files for this to work. I think they are, but the resulting output shows the intro just fine, followed by a totally garbled body. What am I missing ?

    ffmpeg -f concat -i concat.txt -c copy output.mp4

    Contents of concat.txt :

    file 'intro.mp4'
    
file 'body.mp4'

    and the output of ffprobe for both input files :

    intro.mp4

    ffprobe version 3.2.4 Copyright (c) 2007-2017 the FFmpeg developers
    
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'intro.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.56.101
    
  Duration: 00:00:05.04, start: 0.000000, bitrate: 73 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler

    body.mp4

    ffprobe version 3.2.4 Copyright (c) 2007-2017 the FFmpeg developers
    
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'body.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    encoder         : Lavf57.56.101
    
  Duration: 00:00:36.84, start: 0.000000, bitrate: 5615 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 5613 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler

    Output of ffmpeg :

    ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with Apple LLVM version 7.0.2 (clang-700.1.81)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/3.2.4 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --disable-lzma --enable-vda
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fdda3018000] Auto-inserting h264_mp4toannexb bitstream filter
    
Input #0, concat, from 'concat.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 69 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 960x720 [SAR 1:1 DAR 4:3], 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    encoder         : Lavf57.56.101
    
    Stream #0:0(eng): Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p, 960x720 [SAR 1:1 DAR 4:3], q=2-31, 69 kb/s, 25 fps, 25 tbr, 12800 tbn, 12800 tbc
    
    Metadata:
    
      handler_name    : VideoHandler
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fdda3800000] Auto-inserting h264_mp4toannexb bitstream filter
    
frame= 1047 fps=973 q=-1.0 Lsize=   25299kB time=00:00:41.76 bitrate=4962.8kbits/s speed=38.8x    
    
video:25286kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.050621%

    As far as I can tell, everything is identical except for the bitrate and language. Setting the language doesn’t seem to make a difference. I’ve tried to transcode the intro to a higher bitrate for the intro but can’t get it to stick in the output. I’m OK with transcoding one of the files (ideally the intro) but don’t know what else to try to change. Thoughts ?

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