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• Stacking different length videos not working with ffmpeg and -itsoffset

  3 avril 2019, par Lucas Madalozzo

  I developed a video conferencing app that records the video streams separately, and I am now looking for a way to merge them. At the moment I am experimenting with -itsoffset and hstack to stack 2 videos side by side using this command :

  ffmpeg \
  
  -itsoffset 17 -i smaller.mp4 \
  
  -itsoffset 0 -i bigger.mp4 \
  
  -filter_complex hstack=inputs=2 \
  
  -c:v libx264 -crf 23 out.mp4

  The result is a side by side video where both streams remain frozen for 17 seconds then start playing, even the bigger.mp4 video that should start at time 0.

  Any help would be really appreciated !

  ffmpeg verbose :

  ffmpeg version 4.1 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with gcc 4.9.2 (Debian 4.9.2-10+deb8u1)
  
    configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilter --enable-libmp3lame --enable-libvorbis --enable-libtheora --enable-libx264 --enable-libspeex --enab                                                                                                                                       le-shared --enable-pthreads --enable-libopenjpeg --enable-nonfree --enable-libopus --enable-libvorbis --enable-libvpx
  
    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
  
    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 'smaller.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.20.100
  
    Duration: 00:00:05.16, start: 0.000000, bitrate: 444 kb/s
  
      Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 330 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'bigger.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf56.36.100
  
    Duration: 00:00:22.03, start: 0.000000, bitrate: 290 kb/s
  
      Stream #1:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 480x360 [SAR 1:1 DAR 4:3], 177 kb/s, 32 fps, 32 tbr, 16384 tbn, 64 tbc (default)
  
      Metadata:
  
        handler_name    : VideoHandler
  
      Stream #1:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 103 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
  File 'out.mp4' already exists. Overwrite ? [y/N] y
  
  Stream mapping:
  
    Stream #0:0 (h264) -> hstack:input0 (graph 0)
  
    Stream #1:0 (h264) -> hstack:input1 (graph 0)
  
    hstack (graph 0) -> Stream #0:0 (libx264)
  
    Stream #0:1 -> #0:1 (aac (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  [libx264 @ 0x206ed00] using SAR=1/1
  
  [libx264 @ 0x206ed00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
  
  [libx264 @ 0x206ed00] profile High, level 3.1
  
  [libx264 @ 0x206ed00] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=3 lookahead_threads=1 sliced_thre                                                                                                                                       ads=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 scene                                                                                                                                       cut=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 'out.mp4':
  
    Metadata:
  
      major_brand     : isom
  
      minor_version   : 512
  
      compatible_brands: isomiso2avc1mp41
  
      encoder         : Lavf58.20.100
  
      Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 960x360 [SAR 1:1 DAR 8:3], q=-1--1, 32 fps, 16384 tbn, 32 tbc (default)
  
      Metadata:
  
        encoder         : Lavc58.35.100 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
      Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
  
      Metadata:
  
        handler_name    : SoundHandler
  
        encoder         : Lavc58.35.100 aac
  
  frame=  709 fps=130 q=-1.0 Lsize=     573kB time=00:00:22.12 bitrate= 212.2kbits/s dup=544 drop=0 speed=4.05x
  
  video:478kB audio:81kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 2.445685%
  
  [libx264 @ 0x206ed00] frame I:3     Avg QP:16.86  size: 38355
  
  [libx264 @ 0x206ed00] frame P:190   Avg QP:18.22  size:  1633
  
  [libx264 @ 0x206ed00] frame B:516   Avg QP:16.23  size:   123
  
  [libx264 @ 0x206ed00] consecutive B-frames:  1.3%  2.8%  6.8% 89.1%
  
  [libx264 @ 0x206ed00] mb I  I16..4:  6.6% 54.8% 38.6%
  
  [libx264 @ 0x206ed00] mb P  I16..4:  0.4%  1.5%  0.2%  P16..4:  8.7%  4.0%  1.9%  0.0%  0.0%    skip:83.3%
  
  [libx264 @ 0x206ed00] mb B  I16..4:  0.0%  0.1%  0.0%  B16..8:  4.2%  0.3%  0.0%  direct: 0.0%  skip:95.4%  L0:37.2% L1:58.9% BI: 4.0%
  
  [libx264 @ 0x206ed00] 8x8 transform intra:66.2% inter:63.4%
  
  [libx264 @ 0x206ed00] coded y,uvDC,uvAC intra: 66.1% 65.6% 21.6% inter: 1.7% 1.1% 0.0%
  
  [libx264 @ 0x206ed00] i16 v,h,dc,p: 21% 26% 11% 42%
  
  [libx264 @ 0x206ed00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 25% 23% 13%  5%  7%  8%  7%  7%  6%
  
  [libx264 @ 0x206ed00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 24%  9%  6%  7%  7%  6%  7%  7%
  
  [libx264 @ 0x206ed00] i8c dc,h,v,p: 46% 25% 20%  9%
  
  [libx264 @ 0x206ed00] Weighted P-Frames: Y:1.1% UV:0.0%
  
  [libx264 @ 0x206ed00] ref P L0: 66.0% 19.4% 12.0%  2.6%  0.0%
  
  [libx264 @ 0x206ed00] ref B L0: 87.2% 11.8%  1.0%
  
  [libx264 @ 0x206ed00] ref B L1: 95.2%  4.8%
  
  [libx264 @ 0x206ed00] kb/s:176.52
  
  [aac @ 0x204aa00] Qavg: 247.398

• Problem recording camera stream through ffmpeg - Inappropriate ioctl for device

  16 septembre 2021, par Otter_warrior

  I'm trying to record a camera stream through ffmpeg, but I'm struggling to understand how to write a correct recording command.

  


  This is the camera format according to v4l2

  


  $ v4l2-ctl -d 1 --list-formats-ext
ioctl: VIDIOC_ENUM_FMT
    Index       : 0
    Type        : Video Capture
    Pixel Format: 'RG12'
    Name        : 12-bit Bayer RGRG/GBGB
        Size: Discrete 1920x1080
            Interval: Discrete 0.033s (30.000 fps)


  


  And this is what I tried so far

  


  ffmpeg -framerate 30 -video_size 1920x1080 -i /dev/video0 output.mkv


  


  which would return this and an empty output file

  


  $ ffmpeg -f v4l2 -framerate 30 -video_size 1920x1080 -i /dev/video0 output.mkv
ffmpeg version 3.4.8-0ubuntu0.2 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 7 (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04)
  configuration: --prefix=/usr --extra-version=0ubuntu0.2 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[video4linux2,v4l2 @ 0x557fbba630] ioctl(VIDIOC_G_PARM): Inappropriate ioctl for device
[video4linux2,v4l2 @ 0x557fbba630] Time per frame unknown
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: N/A
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 1920x1080, 1000k tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
Press [q] to stop, [?] for help
Finishing stream 0:0 without any data written to it.
[libx264 @ 0x557fbbd6d0] MB rate (8160000000) > level limit (16711680)
[libx264 @ 0x557fbbd6d0] using cpu capabilities: ARMv8 NEON
[libx264 @ 0x557fbbd6d0] profile High 4:2:2, level 6.2, 4:2:2 8-bit
[libx264 @ 0x557fbbd6d0] 264 - core 152 r2854 e9a5903 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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, matroska, to 'output.mkv':
  Metadata:
    encoder         : Lavf57.83.100
    Stream #0:0: Video: h264 (libx264) (H264 / 0x34363248), yuv422p, 1920x1080, q=-1--1, 1000k fps, 1k tbn, 1000k tbc
    Metadata:
      encoder         : Lavc57.107.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame=    0 fps=0.0 q=0.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Exiting normally, received signal 2.


  


  I'm new to ffmpeg so I can't determine which settings or properties could help me with this format, or if this format is even supported at all. Any help would be greatly appreciated.

  


  Note : I am working on a Jetson board, but gstreamer or nvgstcapture are not an option

  


• Encode videos to send with WhatsApp

  28 avril 2017, par piegames

  I have a series of PNG images of a video I rendered and now I want so send it via WhatsApp. I used to encode my videos with the command from this answer, but apparently the videos can only be played from WhatsApp web ; on the phone I still get an error message. How do I convert them so that they can also be played on phone ?

  Command used :

  %PATH_TO_FFMPEG%\ffmpeg.exe -i paint\out%04d.png -c:v libx264 -c:a aac ./videos/out7.mp4

  Log :

  ffmpeg version 3.2.4 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.3.0 (GCC)
  
    configuration: --enable-gpl --enable-version3 --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-nvenc --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable-lzma --enable-zlib
  
    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
  
    libswscale      4.  2.100 /  4.  2.100
  
    libswresample   2.  3.100 /  2.  3.100
  
    libpostproc    54.  1.100 / 54.  1.100
  
  Input #0, image2, from 'paint2\out%04d.png':
  
    Duration: 00:00:45.00, start: 0.000000, bitrate: N/A
  
      Stream #0:0: Video: png, rgba(pc), 384x240 [SAR 2835:2835 DAR 8:5], 25 fps, 25 tbr, 25 tbn, 25 tbc
  
  No pixel format specified, yuv444p for H.264 encoding chosen.
  
  Use -pix_fmt yuv420p for compatibility with outdated media players.
  
  [libx264 @ 000000000061a660] using SAR=1/1
  
  [libx264 @ 000000000061a660] using cpu capabilities: MMX2 SSE2Fast LZCNT
  
  [libx264 @ 000000000061a660] profile High 4:4:4 Predictive, level 1.3, 4:4:4 8-bit
  
  [libx264 @ 000000000061a660] 264 - core 148 r2762 90a61ec - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=4 threads=6 lookahead_threads=1 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 './videos/out6.mp4':
  
    Metadata:
  
      encoder         : Lavf57.56.101
  
      Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv444p, 384x240 [SAR 1:1 DAR 8:5], q=-1--1, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.64.101 libx264
  
      Side data:
  
        cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (png (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  frame=   79 fps=0.0 q=28.0 size=      19kB time=00:00:01.04 bitrate= 152.5kbits/frame=  171 fps=168 q=28.0 size=      21kB time=00:00:04.72 bitrate=  36.4kbits/frame=  255 fps=168 q=28.0 size=      24kB time=00:00:08.08 bitrate=  24.1kbits/frame=  309 fps=153 q=28.0 size=      48kB time=00:00:10.24 bitrate=  38.6kbits/frame=  383 fps=151 q=28.0 size=      51kB time=00:00:13.20 bitrate=  31.7kbits/frame=  452 fps=148 q=28.0 size=      54kB time=00:00:15.96 bitrate=  27.7kbits/frame=  534 fps=151 q=28.0 size=      59kB time=00:00:19.24 bitrate=  25.1kbits/frame=  622 fps=154 q=28.0 size=      85kB time=00:00:22.76 bitrate=  30.7kbits/frame=  706 fps=155 q=28.0 size=      90kB time=00:00:26.12 bitrate=  28.1kbits/frame=  795 fps=157 q=28.0 size=      94kB time=00:00:29.68 bitrate=  25.9kbits/frame=  893 fps=161 q=28.0 size=     121kB time=00:00:33.60 bitrate=  29.5kbits/frame=  985 fps=162 q=28.0 size=     126kB time=00:00:37.28 bitrate=  27.6kbits/frame= 1084 fps=165 q=28.0 size=     153kB time=00:00:41.24 bitrate=  30.3kbits/frame= 1125 fps=163 q=-1.0 Lsize=     168kB time=00:00:44.88 bitrate=  30.6kbits/s speed=6.52x
  
  video:154kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.859178%
  
  [libx264 @ 000000000061a660] frame I:5     Avg QP:14.73  size: 22873
  
  [libx264 @ 000000000061a660] frame P:384   Avg QP:14.24  size:    65
  
  [libx264 @ 000000000061a660] frame B:736   Avg QP:16.11  size:    24
  
  [libx264 @ 000000000061a660] consecutive B-frames:  7.3% 13.7%  8.3% 70.8%
  
  [libx264 @ 000000000061a660] mb I  I16..4: 35.6% 47.1% 17.3%
  
  [libx264 @ 000000000061a660] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  1.2%  0.1%  0.0%  0.0%  0.0%    skip:98.6%
  
  [libx264 @ 000000000061a660] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.4%  0.0%  0.0%  direct: 0.0%  skip:99.6%  L0:53.1% L1:46.0% BI: 0.9%
  
  [libx264 @ 000000000061a660] 8x8 transform intra:47.2% inter:15.9%
  
  [libx264 @ 000000000061a660] coded y,u,v intra: 80.7% 29.5% 0.9% inter: 0.1% 0.0% 0.0%
  
  [libx264 @ 000000000061a660] i16 v,h,dc,p: 24% 15% 55%  6%
  
  [libx264 @ 000000000061a660] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu:  5%  7% 62% 14%  6%  1%  2%  1%  2%
  
  [libx264 @ 000000000061a660] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 10%  9% 29% 11%  8%  5% 14%  5%  9%
  
  [libx264 @ 000000000061a660] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 000000000061a660] ref P L0: 27.3%  0.7% 36.5% 35.6%
  
  [libx264 @ 000000000061a660] ref B L0: 59.9% 29.7% 10.4%
  
  [libx264 @ 000000000061a660] ref B L1: 96.7%  3.3%
  
  [libx264 @ 000000000061a660] kb/s:27.91

  Error on my Phone : "Dieses Video kann leider nicht wiedergegeben werden"