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  • FFMPEG concat filter has unconnected audio output

    7 juillet 2021, par volx757

    I am trying to concat an arbitrary video file with a video file of 5 seconds of black. Here is the command I'm using :

    


    ffmpeg -i tmp/converted_one_1234.mp4 -i public/empty.mp4 -vsync 2 -filter_complex "[0:v]scale=1024:576:force_original_aspect_ratio=decrease,pad=1024:576:(ow-iw)/2:(oh-ih)/2,setsar=1[v0]; [1:v]scale=1024:576:force_original_aspect_ratio=decrease,pad=1024:576:(ow-iw)/2:(oh-ih)/2,setsar=1[v1]; [v0][0:a][v1][1:a]concat=n=2:v=1:a=1[v][a]" -map [v] -map [a] output.mp4


    


    And the error :

    


    Filter concat:out:a0 has an unconnected output


    


    So I understand the issue is that there is an audio stream that is not getting mapped to an output. The arbitrary video has audio in it, the black video technically has no sound, but it has an audio stream (verified with ffprobe).

    


    I think I'm just missing how the syntax works here. I've tried removing the audio input from this section :

    


    [v0][0:a][v1]concat=n=2:v=1:a=1[v][a]


    


    but it doesn't work. How do I avoid this error ?

    


    edit with complete log of ffmpeg events (i should note that before this failing operation, there is one in which the arbitrary video gets converted to an mp4. The concat fails regardless of whether the first conversion is included) :

    


        ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.5 (clang-1205.0.22.9)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --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-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'http://s3.amazonaws.com/bucket/27173/custom_video/final/IMG_2753.mp4?1625616358':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:15.93, start: 0.000000, bitrate: 802 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x568, 723 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 70 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
File 'tmp/converted_one_27173.mp4' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
  Stream #0:1 -> #0:1 (aac (native) -> mp2 (native))
Press [q] to stop, [?] for help
[libx264 @ 0x7fe770820400] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
[libx264 @ 0x7fe770820400] profile High, level 3.0, 4:2:0, 8-bit
[libx264 @ 0x7fe770820400] 264 - core 163 r3060 5db6aa6 - H.264/MPEG-4 AVC codec - Copyleft 2003-2021 - 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
Output #0, mp4, to 'tmp/converted_one_27173.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Stream #0:0(und): Video: h264 (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 320x568, q=2-31, 30 fps, 15360 tbn (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
  Stream #0:1(und): Audio: mp2 (mp4a / 0x6134706D), 44100 Hz, mono, s16, 384 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
      encoder         : Lavc58.134.100 mp2
frame=  478 fps=353 q=-1.0 Lsize=    2033kB time=00:00:15.89 bitrate=1047.8kbits/s speed=11.7x    
video:1271kB audio:747kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.769286%
[libx264 @ 0x7fe770820400] frame I:11    Avg QP:23.67  size:  9018
[libx264 @ 0x7fe770820400] frame P:200   Avg QP:25.18  size:  4565
[libx264 @ 0x7fe770820400] frame B:267   Avg QP:30.02  size:  1081
[libx264 @ 0x7fe770820400] consecutive B-frames: 20.5% 12.1%  8.8% 58.6%
[libx264 @ 0x7fe770820400] mb I  I16..4:  9.3% 78.4% 12.3%
[libx264 @ 0x7fe770820400] mb P  I16..4: 10.3% 32.2%  1.0%  P16..4: 34.0% 12.3%  5.0%  0.0%  0.0%    skip: 5.2%
[libx264 @ 0x7fe770820400] mb B  I16..4:  1.0%  4.2%  0.1%  B16..8: 50.8%  4.2%  0.3%  direct: 1.7%  skip:37.6%  L0:52.8% L1:42.8% BI: 4.4%
[libx264 @ 0x7fe770820400] 8x8 transform intra:75.0% inter:70.6%
[libx264 @ 0x7fe770820400] coded y,uvDC,uvAC intra: 47.7% 64.1% 8.5% inter: 17.0% 19.6% 2.4%
[libx264 @ 0x7fe770820400] i16 v,h,dc,p: 17% 21%  8% 53%
[libx264 @ 0x7fe770820400] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 23% 15%  5%  7%  7%  7%  5%  7%
[libx264 @ 0x7fe770820400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 21% 24% 14%  5%  9%  7%  9%  5%  6%
[libx264 @ 0x7fe770820400] i8c dc,h,v,p: 47% 25% 20%  8%
[libx264 @ 0x7fe770820400] Weighted P-Frames: Y:11.5% UV:5.5%
[libx264 @ 0x7fe770820400] ref P L0: 73.5% 12.0% 11.9%  2.0%  0.5%
[libx264 @ 0x7fe770820400] ref B L0: 96.0%  3.8%  0.2%
[libx264 @ 0x7fe770820400] ref B L1: 98.1%  1.9%
[libx264 @ 0x7fe770820400] kb/s:653.11
ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.5 (clang-1205.0.22.9)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4_2 --enable-shared --enable-pthreads --enable-version3 --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-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Trailing option(s) found in the command: may be ignored.
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'tmp/converted_one_27173.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:15.93, start: 0.000000, bitrate: 1045 kb/s
  Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 320x568, 653 kb/s, 30 fps, 30 tbr, 15360 tbn, 60 tbc (default)
    Metadata:
      handler_name    : Core Media Video
      vendor_id       : [0][0][0][0]
  Stream #0:1(und): Audio: mp3 (mp4a / 0x6134706D), 44100 Hz, mono, fltp, 384 kb/s (default)
    Metadata:
      handler_name    : Core Media Audio
      vendor_id       : [0][0][0][0]
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'public/empty.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.76.100
  Duration: 00:00:05.01, start: 0.000000, bitrate: 17 kb/s
  Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1024x576 [SAR 1:1 DAR 16:9], 7 kb/s, 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 2 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]
Filter concat:out:a0 has an unconnected output


    


  • Multiple trims to a video using ffmpeg generating video with shorter duration than expected [closed]

    9 septembre 2024, par Gerardo

    I have an application that given a video it trims multiple parts of that video using ffmpeg. Each part is cropped, scaled and then concatenated to generate a single video.

    


    To share an example, I have a video of 1 minute and 44 seconds of duration and 60 fps. My goal is to trim 3 parts of the video :

    


      

    • First one between seconds 0 to 44.666
    • 


    • Second one between seconds 44.666 to 74.349
    • 


    • Third one between seconds 74.349 to 103.985
    • 


    


    The ffmpeg command I use to achieve that is the following one :

    


    ffmpeg -y -hide_banner -i bg_720_1280.png -i error.mp4 -filter_complex "
[1:v]trim=0.0:44.666,setpts=PTS-STARTPTS,crop=405.0:720.0:437.5:0.0,scale=-2:1280.0[crop_1_0_v];
[1:a]atrim=0.0:44.666,volume=1.0,asetpts=PTS-STARTPTS[crop_1_0_a];
[0:v][crop_1_0_v]overlay=enable='between(t,0,44.666)':x=0.0:y=0.0[crop_1_0_v];
[1:v]trim=44.666:74.349,setpts=PTS-STARTPTS,crop=405.0:720.0:437.5:0.0,scale=-2:1280.0[crop_2_0_v];
[1:a]atrim=44.666:74.349,volume=1.0,asetpts=PTS-STARTPTS[crop_2_0_a];
[0:v][crop_2_0_v]overlay=enable='between(t,0,29.683)':x=0.0:y=0.0[crop_2_0_v];
[1:v]trim=74.349:103.985,setpts=PTS-STARTPTS,crop=405.0:720.0:437.5:0.0,scale=-2:1280.0[crop_3_0_v];
[1:a]atrim=74.349:103.985,volume=1.0,asetpts=PTS-STARTPTS[crop_3_0_a];
[0:v][crop_3_0_v]overlay=enable='between(t,0,29.636)':x=0.0:y=0.0[crop_3_0_v];
[crop_1_0_a][crop_2_0_a][crop_3_0_a]concat=n=3:v=0:a=1[a];
[crop_1_0_v][crop_2_0_v][crop_3_0_v]concat=n=3:v=1:a=0[outv];
[a]amix=1:duration=longest[outa]" -map "[outv]" -map "[outa]" -vcodec libx264 -acodec aac -sws_flags lanczos -pix_fmt yuv420p -crf 17 -preset superfast -r 60 test.mp4


    


    Running this command it generates a video of 11 seconds of duration and I'm unable to understand it. What is wrong with the command ? Also I'm open to recommendations of the ffmpeg command in case you find another way more efficient or performant.

    


    I'm using the following FFMPEG version :

    


    ffmpeg version 7.0.2 Copyright (c) 2000-2024 the FFmpeg developers
  built with Apple clang version 15.0.0 (clang-1500.3.9.4)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/7.0.2 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags='-Wl,-ld_classic' --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libaribb24 --enable-libbluray --enable-libdav1d --enable-libharfbuzz --enable-libjxl --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --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-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-videotoolbox --enable-audiotoolbox
  libavutil      59.  8.100 / 59.  8.100
  libavcodec     61.  3.100 / 61.  3.100
  libavformat    61.  1.100 / 61.  1.100
  libavdevice    61.  1.100 / 61.  1.100
  libavfilter    10.  1.100 / 10.  1.100
  libswscale      8.  1.100 /  8.  1.100
  libswresample   5.  1.100 /  5.  1.100
  libpostproc    58.  1.100 / 58.  1.100


    


    But I got the same issue with static ffmpeg builds

    


    The file bg_720_1280.png is just a transparent image of resolution 720x1280. I think I could achieve the same by using nullsrc filter with that resolution instead of using this background image.

    


  • avformat/avformat : Add FFInputFormat, hide internals of AVInputFormat

    10 février 2024, par Andreas Rheinhardt
    avformat/avformat : Add FFInputFormat, hide internals of AVInputFormat
    

    This commit does for AVInputFormat what commit
    59c9dc82f450638a3068deeb1db5c56f6d155752 did for AVOutputFormat :
    It adds a new type FFInputFormat, moves all the internals
    of AVInputFormat to it and adds a now reduced AVInputFormat
    as first member.

    This does not affect/improve extensibility of both public
    or private fields for demuxers (it is still a mess due to lavd).

    This is possible since 50f34172e0cca2cabc5836308ec66dbf93f5f2a3
    (which removed the last usage of an internal field of AVInputFormat
    in fftools).

    (Hint : tools/probetest.c accesses the internals of FFInputFormat
    as well, but given that it is a testing tool this is not considered
    a problem.)

    Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

    • [DH] configure
    • [DH] libavdevice/alldevices.c
    • [DH] libavdevice/alsa_dec.c
    • [DH] libavdevice/android_camera.c
    • [DH] libavdevice/avdevice.c
    • [DH] libavdevice/bktr.c
    • [DH] libavdevice/decklink_dec_c.c
    • [DH] libavdevice/dshow.c
    • [DH] libavdevice/fbdev_dec.c
    • [DH] libavdevice/gdigrab.c
    • [DH] libavdevice/iec61883.c
    • [DH] libavdevice/jack.c
    • [DH] libavdevice/kmsgrab.c
    • [DH] libavdevice/lavfi.c
    • [DH] libavdevice/libcdio.c
    • [DH] libavdevice/libdc1394.c
    • [DH] libavdevice/openal-dec.c
    • [DH] libavdevice/oss_dec.c
    • [DH] libavdevice/pulse_audio_dec.c
    • [DH] libavdevice/sndio_dec.c
    • [DH] libavdevice/utils.c
    • [DH] libavdevice/v4l2.c
    • [DH] libavdevice/vfwcap.c
    • [DH] libavdevice/xcbgrab.c
    • [DH] libavformat/3dostr.c
    • [DH] libavformat/4xm.c
    • [DH] libavformat/aacdec.c
    • [DH] libavformat/aadec.c
    • [DH] libavformat/aaxdec.c
    • [DH] libavformat/ac3dec.c
    • [DH] libavformat/ac4dec.c
    • [DH] libavformat/acedec.c
    • [DH] libavformat/acm.c
    • [DH] libavformat/act.c
    • [DH] libavformat/adp.c
    • [DH] libavformat/ads.c
    • [DH] libavformat/adxdec.c
    • [DH] libavformat/aea.c
    • [DH] libavformat/afc.c
    • [DH] libavformat/aiffdec.c
    • [DH] libavformat/aixdec.c
    • [DH] libavformat/allformats.c
    • [DH] libavformat/alp.c
    • [DH] libavformat/amr.c
    • [DH] libavformat/anm.c
    • [DH] libavformat/apac.c
    • [DH] libavformat/apc.c
    • [DH] libavformat/ape.c
    • [DH] libavformat/apm.c
    • [DH] libavformat/apngdec.c
    • [DH] libavformat/aptxdec.c
    • [DH] libavformat/aqtitledec.c
    • [DH] libavformat/argo_asf.c
    • [DH] libavformat/argo_brp.c
    • [DH] libavformat/argo_cvg.c
    • [DH] libavformat/asfdec_f.c
    • [DH] libavformat/asfdec_o.c
    • [DH] libavformat/assdec.c
    • [DH] libavformat/astdec.c
    • [DH] libavformat/au.c
    • [DH] libavformat/av1dec.c
    • [DH] libavformat/avformat.h
    • [DH] libavformat/avidec.c
    • [DH] libavformat/avisynth.c
    • [DH] libavformat/avr.c
    • [DH] libavformat/avs.c
    • [DH] libavformat/bethsoftvid.c
    • [DH] libavformat/bfi.c
    • [DH] libavformat/bink.c
    • [DH] libavformat/binka.c
    • [DH] libavformat/bintext.c
    • [DH] libavformat/bit.c
    • [DH] libavformat/bmv.c
    • [DH] libavformat/boadec.c
    • [DH] libavformat/bonk.c
    • [DH] libavformat/brstm.c
    • [DH] libavformat/c93.c
    • [DH] libavformat/cafdec.c
    • [DH] libavformat/cdg.c
    • [DH] libavformat/cdxl.c
    • [DH] libavformat/cinedec.c
    • [DH] libavformat/codec2.c
    • [DH] libavformat/concatdec.c
    • [DH] libavformat/dashdec.c
    • [DH] libavformat/dauddec.c
    • [DH] libavformat/dcstr.c
    • [DH] libavformat/demux.c
    • [DH] libavformat/demux.h
    • [DH] libavformat/demux_utils.c
    • [DH] libavformat/derf.c
    • [DH] libavformat/dfa.c
    • [DH] libavformat/dfpwmdec.c
    • [DH] libavformat/dhav.c
    • [DH] libavformat/dsfdec.c
    • [DH] libavformat/dsicin.c
    • [DH] libavformat/dss.c
    • [DH] libavformat/dtsdec.c
    • [DH] libavformat/dtshddec.c
    • [DH] libavformat/dv.c
    • [DH] libavformat/dvdvideodec.c
    • [DH] libavformat/dxa.c
    • [DH] libavformat/eacdata.c
    • [DH] libavformat/electronicarts.c
    • [DH] libavformat/epafdec.c
    • [DH] libavformat/evcdec.c
    • [DH] libavformat/ffmetadec.c
    • [DH] libavformat/filmstripdec.c
    • [DH] libavformat/fitsdec.c
    • [DH] libavformat/flacdec.c
    • [DH] libavformat/flic.c
    • [DH] libavformat/flvdec.c
    • [DH] libavformat/format.c
    • [DH] libavformat/frmdec.c
    • [DH] libavformat/fsb.c
    • [DH] libavformat/fwse.c
    • [DH] libavformat/g722.c
    • [DH] libavformat/g723_1.c
    • [DH] libavformat/g726.c
    • [DH] libavformat/g729dec.c
    • [DH] libavformat/gdv.c
    • [DH] libavformat/genh.c
    • [DH] libavformat/gifdec.c
    • [DH] libavformat/gsmdec.c
    • [DH] libavformat/gxf.c
    • [DH] libavformat/hca.c
    • [DH] libavformat/hcom.c
    • [DH] libavformat/hls.c
    • [DH] libavformat/hnm.c
    • [DH] libavformat/iamfdec.c
    • [DH] libavformat/icodec.c
    • [DH] libavformat/idcin.c
    • [DH] libavformat/idroqdec.c
    • [DH] libavformat/iff.c
    • [DH] libavformat/ifv.c
    • [DH] libavformat/ilbc.c
    • [