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  • Not able to scale, pad and combine 2 videos using FFmpeg

    21 novembre 2018, par Mayank

    I am using FFMpeg to scale, pad and merge 2 videos and generate one mp4 file. I am using the following command which leads to an output file with no audio for few seconds in the middle of the second video. Also, there is a faint white border displayed for few seconds on the black frame that I am creating. Though there are no errors in the command but I am getting a warning "[swscaler @ 0x6987800] Warning : data is not aligned ! This can lead to a speed loss".

    I checked other posts here and tried the solutions provided but it didn’t work for me. It would be great if some one can help point out what I am missing.

    Thanks in advance.

    Here is the command :

    ffmpeg -i 1_a.opus -i 2_a.opus -itsoffset 0.024181 -i 01_v.webm -itsoffset 0.113192 -i 02_v.webm -filter_complex \
    
"[1:a]adelay=15726.168|15726.168[a1]; \
    
[0:a][a1]amix; \
    
[3:v]trim=0:15.726168,geq=0:128:128[silence]; \
    
[3:v]fifo[3v]; \
    
[silence][3v]concat[3_v_silence]; \
    
[3_v_silence]scale=-1:240[3v_scaled_240]; \
    
[3v_scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black[3v_padded]; \
    
[2:v]scale=-1:240[2v_scaled_240]; \
    
[2v_scaled_240]pad=width=320:height=240:x=(320-in_w)/2:y=(240-in_h)/2:color=black[2v_padded]; \
    
[2v_padded]fifo[2v]; \
    
[2v][3v_padded]hstack[out_v]; \
    
[out_v]pad=width=640:height=480:x=(640-in_w)/2:y=(480-in_h)/2:color=black" \
    
-crf 40 -preset ultrafast -y -r pal out.mp4

    Console output :

    ffmpeg version 4.0.2-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
    
  configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libaom --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg
    
  libavutil      56. 14.100 / 56. 14.100
    
  libavcodec     58. 18.100 / 58. 18.100
    
  libavformat    58. 12.100 / 58. 12.100
    
  libavdevice    58.  3.100 / 58.  3.100
    
  libavfilter     7. 16.100 /  7. 16.100
    
  libswscale      5.  1.100 /  5.  1.100
    
  libswresample   3.  1.100 /  3.  1.100
    
  libpostproc    55.  1.100 / 55.  1.100
    
Input #0, ogg, from '1_a.opus':
    
  Duration: 00:01:03.82, start: -0.020000, bitrate: 37 kb/s
    
    Stream #0:0: Audio: opus, 48000 Hz, stereo, fltp
    
Input #1, ogg, from '2_a.opus':
    
  Duration: 00:00:52.40, start: -0.020000, bitrate: 44 kb/s
    
    Stream #1:0: Audio: opus, 48000 Hz, stereo, fltp
    
Input #2, matroska,webm, from '01_v.webm':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
  Duration: 00:01:03.83, start: 0.000000, bitrate: 202 kb/s
    
    Stream #2:0: Video: vp8, yuv420p(progressive), 640x480, SAR 1:1 DAR 4:3, 333 fps, 333 tbr, 1k tbn, 1k tbc (default)
    
Input #3, matroska,webm, from '02_v.webm':
    
  Metadata:
    
    encoder         : Lavf56.40.101
    
  Duration: 00:00:52.34, start: 0.000000, bitrate: 200 kb/s
    
    Stream #3:0: Video: vp8, yuv420p(progressive), 480x640, SAR 1:1 DAR 3:4, 25 fps, 25 tbr, 1k tbn, 1k tbc (default)
    
Stream mapping:
    
  Stream #0:0 (opus) -> amix:input0
    
  Stream #1:0 (opus) -> adelay
    
  Stream #2:0 (vp8) -> scale
    
  Stream #3:0 (vp8) -> trim
    
  Stream #3:0 (vp8) -> fifo
    
  amix -> Stream #0:0 (aac)
    
  pad -> Stream #0:1 (libx264)
    
Press [q] to stop, [?] for help
    
[swscaler @ 0x6484740] Warning: data is not aligned! This can lead to a speed loss
    
[libx264 @ 0x63a0d40] using SAR=1/1
    
[libx264 @ 0x63a0d40] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowShuffle
    
[libx264 @ 0x63a0d40] profile Constrained Baseline, level 3.0
    
[libx264 @ 0x63a0d40] 264 - core 155 r2901 7d0ff22 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - http://www.videolan.org/x264.html - options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=1 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 lookahead_threads=1 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=250 keyint_min=25 scenecut=0 intra_refresh=0 rc=crf mbtree=0 crf=40.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
    
Output #0, mp4, to 'out.mp4':
    
  Metadata:
    
    encoder         : Lavf58.12.100
    
    Stream #0:0: Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      encoder         : Lavc58.18.100 aac
    
    Stream #0:1: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=-1--1, 25 fps, 12800 tbn, 25 tbc (default)
    
    Metadata:
    
      encoder         : Lavc58.18.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
    
frame= 1598 fps=131 q=-1.0 Lsize=    1375kB time=00:01:08.16 bitrate= 165.3kbits/s dup=2 drop=1047 speed=5.57x    
    
video:455kB audio:883kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.787654%
    
[aac @ 0x63a31c0] Qavg: 32520.934
    
[libx264 @ 0x63a0d40] frame I:7     Avg QP:32.00  size:  5746
    
[libx264 @ 0x63a0d40] frame P:1591  Avg QP:33.93  size:   267
    
[libx264 @ 0x63a0d40] mb I  I16..4: 100.0%  0.0%  0.0%
    
[libx264 @ 0x63a0d40] mb P  I16..4:  0.3%  0.0%  0.0%  P16..4:  4.2%  0.0%  0.0%  0.0%  0.0%    skip:95.5%
    
[libx264 @ 0x63a0d40] coded y,uvDC,uvAC intra: 21.3% 18.9% 3.0% inter: 1.1% 0.5% 0.0%
    
[libx264 @ 0x63a0d40] i16 v,h,dc,p: 54% 27% 11%  9%
    
[libx264 @ 0x63a0d40] i8c dc,h,v,p: 69% 17% 10%  4%
    
[libx264 @ 0x63a0d40] kb/s:58.22

  • How to remove everything but video and stereo audio stream from video with ffmpeg ?

    20 octobre 2019, par user3776738

    I’m trying to get a clean h264 video from a mkv file.With clean I mean that it has only a video stream plus stereo sound.
    The inputfile can have multiple channels and subtitles and other unknown stuff, which I don’t need.
    I’m using ffmpeg with this command :

     ffmpeg -i "input.mkv" -ac 2 -vf scale=trunc(oh*a/2)*2:480 -c:v libx264 "output.mp4"

    This should give me a 480p video with stereo sound,which I require.
    I tried multiple -map or dispositions commands with ffmpeg to remove the subtitles whithout any success.

    How can I remove everything but video and stereo stream with ffmpeg and get a 480p stereo sound video ?

    Edit :
    Output of ffmpeg - "input.mkv" -i "output.mp4" :

    ffmpeg -i "input.mkv" -i "output.mp4"
    
ffmpeg version N-91972-gbd10c1e9a8 Copyright (c) 2000-2018 the FFmpeg developer
    

    
  built with gcc 8.2.1 (GCC) 20180813
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconf
    
g --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-li
    
freetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-am
    
wb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy -
    
enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-
    
ibwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 -
    
enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --e
    
able-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --e
    
able-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --
    
nable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --ena
    
le-avisynth
    
  libavutil      56. 19.101 / 56. 19.101
    
  libavcodec     58. 30.100 / 58. 30.100
    
  libavformat    58. 18.101 / 58. 18.101
    
  libavdevice    58.  4.103 / 58.  4.103
    
  libavfilter     7. 32.100 /  7. 32.100
    
  libswscale      5.  2.100 /  5.  2.100
    
  libswresample   3.  2.100 /  3.  2.100
    
  libpostproc    55.  2.100 / 55.  2.100
    
[hevc @ 00000000004a5940] Invalid default display window
    
Input #0, matroska,webm, from 'input.mkv':
    
  Metadata:
    
    title           : Elysium (2013)
    
    encoder         : libebml v1.3.3 + libmatroska v1.4.4
    
    creation_time   : 2016-01-05T22:30:41.000000Z
    
  Duration: 00:01:02.73, start: 0.166000, bitrate: 53638 kb/s
    
    Chapter #0:0: start 0.000000, end 62.896000
    
    Metadata:
    
      title           : 00:00:00.000
    
    Stream #0:0(eng): Video: hevc (Main 10), yuv420p10le(tv), 3840x1606, SAR 1:
    
 DAR 1920:803, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
    
    Metadata:
    
      title           : Elysium (2013) - Release for ULTRAHDCLUB
    
      BPS             : 51036975
    
      BPS-eng         : 51036975
    
      DURATION        : 00:01:02.604000000
    
      DURATION-eng    : 00:01:02.604000000
    
      NUMBER_OF_FRAMES: 1501
    
      NUMBER_OF_FRAMES-eng: 1501
    
      NUMBER_OF_BYTES : 399389852
    
      NUMBER_OF_BYTES-eng: 399389852
    
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
    
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 22:30:41
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 22:30:41
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
    Stream #0:1(eng): Audio: dts (DTS-HD MA), 48000 Hz, 7.1, s16p (default)
    
    Metadata:
    
      title           : DTS-HD MA 7.1 - Blu-ray CEE
    
      BPS             : 2706639
    
      BPS-eng         : 2706639
    
      DURATION        : 00:01:02.561000000
    
      DURATION-eng    : 00:01:02.561000000
    
      NUMBER_OF_FRAMES: 5865
    
      NUMBER_OF_FRAMES-eng: 5865
    
      NUMBER_OF_BYTES : 21166260
    
      NUMBER_OF_BYTES-eng: 21166260
    
      _STATISTICS_WRITING_APP: mkvmerge v8.7.0 ('All of the above') 64bit
    
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.7.0 ('All of the above') 64bit
    
      _STATISTICS_WRITING_DATE_UTC: 2016-01-05 22:30:41
    
      _STATISTICS_WRITING_DATE_UTC-eng: 2016-01-05 22:30:41
    
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    title           : Elysium (2013)
    
    encoder         : Lavf58.18.101
    
  Duration: 00:01:02.73, start: 0.000000, bitrate: 1671 kb/s
    
    Chapter #1:0: start 0.000000, end 62.730000
    
    Metadata:
    
      title           : 00:00:00.000
    
    Stream #1:0(eng): Video: h264 (High 10) (avc1 / 0x31637661), yuv420p10le, 1
    
46x480 [SAR 2030:2027 DAR 38773:16216], 1543 kb/s, SAR 15563:15540 DAR 1920:803
    
 23.98 fps, 23.98 tbr, 24k tbn, 47.95 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #1:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fl
    
p, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #1:2(eng): Data: bin_data (text / 0x74786574), 0 kb/s
    
    Metadata:
    
      handler_name    : SubtitleHandler
    
At least one output file must be specified

  • Revision 37455 : Une meilleure vérification... On ne disposait pas encore de l’id_orig ici

    20 avril 2010, par kent1@… — Log

    Une meilleure vérification... On ne disposait pas encore de l’id_orig ici

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