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• 1 FPS slideshow with ffmpeg, produces 25 FPS anyway

  1er mai 2021, par ArekBulski

  I worked this command from other SO question :

  


  $ ffmpeg -i obraz%04d.png -framerate 1 -c:v libx265 output.mkv


  


  I tell it to make it 1 FPS at most, and yet both logs and Nautilus tell me the video is 25 FPS.

  


  Please suggest a course of action ?

  


  Full logs from ffmpeg :

  


  $ ffmpeg -i obraz%04d.png -framerate 1 -c:v libx265 output.mkv
ffmpeg version 4.3.1-4ubuntu1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10 (Ubuntu 10.2.0-9ubuntu2)
  configuration: --prefix=/usr --extra-version=4ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, image2, from 'obraz%04d.png':
  **Duration: 00:00:00.16,** start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1848x1053, **25 fps**, 25 tbr, 25 tbn, 25 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> hevc (libx265))
Press [q] to stop, [?] for help
x265 [info]: HEVC encoder version 3.4
x265 [info]: build info [Linux][GCC 9.3.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX XOP FMA4 FMA3 BMI1
x265 [warning]: halving the quality when psy-rd is enabled for 444 input. Setting cbQpOffset = 6 and crQpOffset = 6
x265 [info]: Main 4:4:4 profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices                              : 1
x265 [info]: frame threads / pool features       : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias  : 25 / 250 / 40 / 5.00 
x265 [info]: Cb/Cr QP Offset                     : 6 / 6
x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress            : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing lslices=6 deblock sao
Output #0, matroska, to 'output.mkv':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: hevc (libx265), gbrp, 1848x1053, q=-1--1, 25 fps, 1k tbn, 25 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx265
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=    4 fps=0.0 q=35.9 Lsize=     137kB time=00:00:00.04 bitrate=27360.6kbits/s speed=0.0532x    
video:134kB audio:0kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 2.194414%
x265 [info]: frame I:      1, Avg QP:30.46  kb/s: 27274.00
x265 [info]: frame P:      1, Avg QP:32.75  kb/s: 106.00  
x265 [info]: frame B:      2, Avg QP:35.38  kb/s: 29.60   
x265 [info]: Weighted P-Frames: Y:0.0% UV:0.0%
x265 [info]: consecutive B-frames: 50.0% 0.0% 50.0% 0.0% 0.0% 

encoded 4 frames in 0.71s (5.60 fps), 6859.80 kb/s, Avg QP:33.49


  


• ffmpeg does not produce a slideshow

  1er mai 2021, par ArekBulski

  I need some help with ffmpeg. I cant crack this one at all. I have 7 png files ready. I need to make a slideshow out of it. But the mkv produced shows and closes. It does not play properly.

  


  $ ffmpeg -framerate 1/5 -i temp-display-%08d.png -c:v libx265 temp-output.mkv

ffmpeg version 4.3.1-4ubuntu1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10 (Ubuntu 10.2.0-9ubuntu2)
  configuration: --prefix=/usr --extra-version=4ubuntu1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-nvenc --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, image2, from 'temp-display-%08d.png':
  Duration: 00:00:35.00, start: 0.000000, bitrate: N/A
    Stream #0:0: Video: png, rgba(pc), 1080x1080 [SAR 3779:3779 DAR 1:1], 0.20 fps, 0.20 tbr, 0.20 tbn, 0.20 tbc
File 'temp-output.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (png (native) -> hevc (libx265))
Press [q] to stop, [?] for help
x265 [info]: HEVC encoder version 3.4
x265 [info]: build info [Linux][GCC 9.3.0][64 bit] 8bit+10bit+12bit
x265 [info]: using cpu capabilities: MMX2 SSE2Fast LZCNT SSSE3 SSE4.2 AVX XOP FMA4 FMA3 BMI1
x265 [warning]: halving the quality when psy-rd is enabled for 444 input. Setting cbQpOffset = 6 and crQpOffset = 6
x265 [info]: Main 4:4:4 profile, Level-4 (Main tier)
x265 [info]: Thread pool created using 8 threads
x265 [info]: Slices                              : 1
x265 [info]: frame threads / pool features       : 3 / wpp(17 rows)
x265 [info]: Coding QT: max CU size, min CU size : 64 / 8
x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
x265 [info]: ME / range / subpel / merge         : hex / 57 / 2 / 3
x265 [info]: Keyframe min / max / scenecut / bias  : 1 / 250 / 40 / 5.00 
x265 [info]: Cb/Cr QP Offset                     : 6 / 6
x265 [info]: Lookahead / bframes / badapt        : 20 / 4 / 2
x265 [info]: b-pyramid / weightp / weightb       : 1 / 1 / 0
x265 [info]: References / ref-limit  cu / depth  : 3 / off / on
x265 [info]: AQ: mode / str / qg-size / cu-tree  : 2 / 1.0 / 32 / 1
x265 [info]: Rate Control / qCompress            : CRF-28.0 / 0.60
x265 [info]: tools: rd=3 psy-rd=2.00 early-skip rskip mode=1 signhide tmvp
x265 [info]: tools: b-intra strong-intra-smoothing lslices=6 deblock sao
Output #0, matroska, to 'temp-output.mkv':
  Metadata:
    encoder         : Lavf58.45.100
    Stream #0:0: Video: hevc (libx265), gbrp, 1080x1080 [SAR 1:1 DAR 1:1], q=-1--1, 0.20 fps, 1k tbn, 0.20 tbc
    Metadata:
      encoder         : Lavc58.91.100 libx265
    Side data:
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: N/A
frame=    7 fps=0.0 q=24.9 Lsize=     113kB time=00:00:20.00 bitrate=  46.1kbits/s speed=29.2x    
video:110kB audio:0kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 2.725160%
x265 [info]: frame I:      1, Avg QP:18.04  kb/s: 117.69  
x265 [info]: frame P:      3, Avg QP:20.62  kb/s: 15.70   
x265 [info]: frame B:      3, Avg QP:24.17  kb/s: 4.94    
x265 [info]: Weighted P-Frames: Y:33.3% UV:0.0%
x265 [info]: consecutive B-frames: 50.0% 25.0% 25.0% 0.0% 0.0% 


  


• FFmpeg Video is not shown, after encoding audio and video

  19 mars 2019, par Ashutosh Singla

  I’m using FFMPEG to encode my video which also has audio in it

  ffmpeg -i .\A0002780.kava23_Fin.avi -c:v libx265 -preset ultrafast -crf 20 -c:a aac output.mp4

  This command is working OK with no errors. But when I play the video, I can hear only audio and can’t see the video.

  Here are the logs of the command :

  ffmpeg version N-83280-gcba4f0e Copyright (c) 2000-2017 the FFmpeg developers
  
  built with gcc 5.4.0 (GCC)
  
  configuration: --enable-gpl --enable-version3 --enable-cuda --enable-cuvid 
  
  --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-decklink --enable-zlib
  
  
  
  
  
  libavutil      55. 45.100 / 55. 45.100
  
    libavcodec     57. 75.100 / 57. 75.100
  
    libavformat    57. 65.100 / 57. 65.100
  
    libavdevice    57.  2.100 / 57.  2.100
  
    libavfilter     6. 71.100 /  6. 71.100
  
    libswscale      4.  3.101 /  4.  3.101
  
    libswresample   2.  4.100 /  2.  4.100
  
    libpostproc    54.  2.100 / 54.  2.100
  
  [avi @ 0000000000f973a0] Stream #0: not enough frames to estimate rate; consider increasing probesize
  
  Guessed Channel Layout for Input Stream #0.1 : stereo
  
  Input #0, avi, from '.\A0002780.kava23_Fin.avi':
  
    Duration: 00:00:30.00, start: 0.000000, bitrate: 17697237 kb/s
  
      Stream #0:0: Video: rawvideo, bgr24, 7680x3840, 25 fps, 25 tbr, 25 tbn, 25 tbc
  
      Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 44100 Hz, stereo, s16, 1411 kb/s
  
  x265 [info]: HEVC encoder version 2.2
  
  x265 [info]: build info [Windows][GCC 5.4.0][64 bit] 8bit
  
  x265 [info]: using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX AVX2 FMA3 LZCNT BMI2
  
  x265 [info]: Main profile, Level-6 (Main tier)
  
  x265 [info]: Thread pool created using 8 threads
  
  x265 [info]: Slices                              : 1
  
  x265 [info]: frame threads / pool features       : 3 / wpp(120 rows)
  
  x265 [info]: Coding QT: max CU size, min CU size : 32 / 16
  
  x265 [info]: Residual QT: max TU size, max depth : 32 / 1 inter / 1 intra
  
  x265 [info]: ME / range / subpel / merge         : dia / 57 / 0 / 2
  
  x265 [info]: Keyframe min / max / scenecut / bias: 25 / 250 / 0 / 5.00
  
  x265 [info]: Lookahead / bframes / badapt        : 5 / 3 / 0
  
  x265 [info]: b-pyramid / weightp / weightb       : 1 / 0 / 0
  
  x265 [info]: References / ref-limit  cu / depth  : 1 / off / off
  
  x265 [info]: AQ: mode / str / qg-size / cu-tree  : 1 / 0.0 / 32 / 1
  
  x265 [info]: Rate Control / qCompress            : CRF-20.0 / 0.60
  
  x265 [info]: tools: rd=2 psy-rd=2.00 early-skip rskip tmvp fast-intra
  
  x265 [info]: tools: strong-intra-smoothing lslices=8 deblock
  
  Output #0, mp4, to 'output.mp4':
  
    Metadata:
  
      encoder         : Lavf57.65.100
  
      Stream #0:0: Video: hevc (libx265) ([35][0][0][0] / 0x0023), yuv420p, 7680x3840, q=2-31, 25 fps, 12800 tbn, 25 tbc
  
      Metadata:
  
        encoder         : Lavc57.75.100 libx265
  
      Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, fltp, 128 kb/s
  
      Metadata:
  
        encoder         : Lavc57.75.100 aac
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> hevc (libx265))
  
    Stream #0:1 -> #0:1 (pcm_s16le (native) -> aac (native))
  
  Press [q] to stop, [?] for help
  
  frame=  750 fps=0.7 q=-0.0 Lsize=   17320kB time=00:00:30.04 bitrate=4722.1kbits/s speed=0.0269x
  
  video:16823kB audio:469kB subtitle:0kB other streams:0kB global headers:2kB muxing overhead: 0.159117%
  
  x265 [info]: frame I:      3, Avg QP:22.35  kb/s: 250515.20
  
  x265 [info]: frame P:    187, Avg QP:24.28  kb/s: 10607.54
  
  x265 [info]: frame B:    560, Avg QP:27.67  kb/s: 1267.19
  
  x265 [info]: consecutive B-frames: 1.1% 1.1% 0.0% 97.9%
  
  
  
  encoded 750 frames in 1117.63s (0.67 fps), 4593.04 kb/s, Avg QP:26.80
  
  [aac @ 00000000027c91e0] Qavg: 456.871 

  It seems that there is no error and I can see that video and audio are encoded properly.

  Any idea ?