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• Why does ffmpeg keep using more and more RAM and crash ?

  29 décembre 2022, par József Márton Kakas

  I am using the following command with ffmpeg to encode a video file using the libsvtav1 codec : ffmpeg -i hevc.mkv -map 0:v:0 -c:v:0 libsvtav1 -preset 8 -crf 22 -format matroska av1.mkv.

  


  However, ffmpeg is using up all of my available RAM and crashing. I have also tried using the libx264 codec, but the same issue occurs, although it happens more slowly. I have already allocated 12 GB of RAM to ffmpeg, but it still seems to be insufficient. How can I prevent ffmpeg from using all of my available RAM and crashing when using either the libsvtav1 or libx264 codecs ?

  


  I have tried it on another VM, but the same issue occurs. Here is the full output of the program.

  


  ffmpeg -i akira.mkv -map 0:v:0 -c:v:0 libsvtav1 -preset 8 -crf 22 -c:a copy -c:s copy -format matroska av1.mkv
ffmpeg version n5.1.2-7-ga6e26053c2-20221106 Copyright (c) 2000-2022 the FFmpeg developers
  built with gcc 12.2.0 (crosstool-NG 1.25.0.90_cf9beb1)
  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-ffbuild-linux-gnu- --arch=x86_64 --target-os=linux --enable-gpl --enable-version3 --disable-debug --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --enable-libpulse --enable-libvmaf --enable-libxcb --enable-xlib --enable-amf --enable-libaom --enable-libaribb24 --enable-avisynth --disable-chromaprint --enable-libdav1d --enable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --enable-frei0r --enable-libgme --enable-libkvazaar --enable-libass --enable-libbluray --enable-libjxl --enable-libmp3lame --enable-libopus --enable-mbedtls --enable-librist --enable-libssh --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --disable-openal --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --enable-librubberband --disable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --enable-libdrm --enable-vaapi --enable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags=-pie --extra-libs='-ldl -lgomp' --extra-version=20221106
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, matroska,webm, from 'akira.mkv':
  Metadata:
    title           : Akira 4K
    encoder         : libebml v1.3.10 + libmatroska v1.5.2
    creation_time   : 2020-05-04T19:57:18.000000Z
  Duration: 02:04:46.50, start: 0.000000, bitrate: 10945 kb/s
  Stream #0:0: Video: hevc (Main 10), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2074 [SAR 1:1 DAR 1920:1037], 23.98 fps, 23.98 tbr, 1k tbn (default)
    Metadata:
      BPS-eng         : 9531297
      DURATION-eng    : 02:04:46.479000000
      NUMBER_OF_FRAMES-eng: 179496
      NUMBER_OF_BYTES-eng: 8919482644
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:1(eng): Subtitle: subrip
    Metadata:
      BPS-eng         : 46
      DURATION-eng    : 01:59:00.755000000
      NUMBER_OF_FRAMES-eng: 1277
      NUMBER_OF_BYTES-eng: 41675
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:2(ita): Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s (default)
    Metadata:
      title           : Nuovo doppiaggio
      BPS-eng         : 448000
      DURATION-eng    : 02:04:28.480000000
      NUMBER_OF_FRAMES-eng: 233390
      NUMBER_OF_BYTES-eng: 418234880
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:3(ita): Audio: ac3, 48000 Hz, stereo, fltp, 448 kb/s
    Metadata:
      title           : Doppiaggio Storico
      BPS-eng         : 448000
      DURATION-eng    : 02:04:28.480000000
      NUMBER_OF_FRAMES-eng: 233390
      NUMBER_OF_BYTES-eng: 418234880
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:4(ita): Subtitle: dvd_subtitle, 1920x1080
    Metadata:
      title           : Italiano
      BPS-eng         : 8426
      DURATION-eng    : 02:00:14.955000000
      NUMBER_OF_FRAMES-eng: 1201
      NUMBER_OF_BYTES-eng: 7599491
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:5(ita): Subtitle: subrip (default)
    Metadata:
      title           : Forced
      BPS-eng         : 0
      DURATION-eng    : 01:46:31.753000000
      NUMBER_OF_FRAMES-eng: 14
      NUMBER_OF_BYTES-eng: 462
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:6(jpn): Audio: eac3, 48000 Hz, 5.1(side), fltp, 256 kb/s
    Metadata:
      BPS-eng         : 256000
      DURATION-eng    : 02:04:46.496000000
      NUMBER_OF_FRAMES-eng: 233953
      NUMBER_OF_BYTES-eng: 239567872
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:7(eng): Audio: eac3, 48000 Hz, 5.1(side), fltp, 256 kb/s
    Metadata:
      BPS-eng         : 256000
      DURATION-eng    : 02:04:46.496000000
      NUMBER_OF_FRAMES-eng: 233953
      NUMBER_OF_BYTES-eng: 239567872
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
  Stream #0:8: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 1067x600, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : cover_land.jpg
      mimetype        : image/jpeg
  Stream #0:9: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 120x176, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : small_cover.jpg
      mimetype        : image/jpeg
  Stream #0:10: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 213x120, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : small_cover_land.jpg
      mimetype        : image/jpeg
  Stream #0:11: Video: mjpeg (Baseline), yuvj444p(pc, bt470bg/unknown/unknown), 600x882, 90k tbr, 90k tbn (attached pic)
    Metadata:
      filename        : cover.jpg
      mimetype        : image/jpeg
  Stream #0:12: Attachment: otf
    Metadata:
      filename        : StoneSansStd-Semibold.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:13: Attachment: otf
    Metadata:
      filename        : StoneSansStd-SemiboldItalic.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:14: Attachment: otf
    Metadata:
      filename        : ATPacella-Black.otf
      mimetype        : application/vnd.ms-opentype
  Stream #0:15: Attachment: ttf
    Metadata:
      filename        : ITC Franklin Gothic LT Medium Condensed.ttf
      mimetype        : application/x-truetype-font
File 'av1.mkv' already exists. Overwrite? [y/N] y
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> av1 (libsvtav1))
Press [q] to stop, [?] for help
Svt[info]: -------------------------------------------
Svt[info]: SVT [version]:       SVT-AV1 Encoder Lib v1.3.0
Svt[info]: SVT [build]  :       GCC 12.2.0       64 bit
Svt[info]: LIB Build date: Nov  6 2022 00:41:54
Svt[info]: -------------------------------------------
Svt[info]: Number of logical cores available: 16
Svt[info]: Number of PPCS 71
Svt[info]: [asm level on system : up to avx]
Svt[info]: [asm level selected : up to avx]
Svt[info]: -------------------------------------------
Svt[info]: SVT [config]: main profile   tier (auto)     level (auto)
Svt[info]: SVT [config]: width / height / fps numerator / fps denominator               : 3840 / 2080 / 24000 / 1001
Svt[info]: SVT [config]: bit-depth / color format                      : 10 / YUV420
Svt[info]: SVT [config]: preset / tune / pred struct                   : 8 / PSNR / random access
Svt[info]: SVT [config]: gop size / mini-gop size / key-frame type     : 161 / 16 / key frame
Svt[info]: SVT [config]: BRC mode / rate factor                        : CRF / 22 
Svt[info]: -------------------------------------------
Output #0, matroska, to 'av1.mkv':
  Metadata:
    title           : Akira 4K
    encoder         : Lavf59.27.100
  Stream #0:0: Video: av1 (AV01 / 0x31305641), yuv420p10le(tv, bt2020nc/bt2020/smpte2084, progressive), 3840x2074 [SAR 1:1 DAR 1920:1037], q=2-31, 23.98 fps, 1k tbn (default)
    Metadata:
      BPS-eng         : 9531297
      DURATION-eng    : 02:04:46.479000000
      NUMBER_OF_FRAMES-eng: 179496
      NUMBER_OF_BYTES-eng: 8919482644
      _STATISTICS_WRITING_APP-eng: mkvmerge v43.0.0 ('The Quartermaster') 32-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2020-05-04 19:57:18
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      encoder         : Lavc59.37.100 libsvtav1
frame=    1 fps=0.0 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=    2 fps=1.3 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=   51 fps= 25 q=0.0 size=       1kB time=00:00:00.00 bitrate=N/A sframe=   73 fps= 16 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   76 fps= 14 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   81 fps= 14 q=16.0 size=       1kB time=00:00:00.00 bitrate=7480frame=   87 fps= 14 q=21.0 size=       1kB time=00:00:00.16 bitrate=  44frame=   95 fps= 14 q=21.0 size=       1kB time=00:00:00.50 bitrate=  14frame=  100 fps= 13 q=16.0 size=       1kB time=00:00:00.66 bitrate=  11frame=  110 fps= 13 q=23.0 size=       1kB time=00:00:00.96 bitrate=   7frame=  114 fps= 13 q=23.0 size=       1kB time=00:00:01.12 bitrate=   6frame=  122 fps= 13 q=23.0 size=       1kB time=00:00:01.46 bitrate=   5frame=  126 fps= 12 q=23.0 size=       1kB time=00:00:01.62 bitrate=   4frame=  133 fps= 12 q=22.0 size=       1kB time=00:00:01.92 bitrate=   3frame=  139 fps= 12 q=21.0 size=       1kB time=00:00:02.17 bitrate=   3frame=  141 fps= 11 q=22.0 size=       1kB time=00:00:02.25 bitrate=   3frame=  144 fps= 11 q=23.0 size=       1kB time=00:00:02.37 bitrate=   3frame=  151 fps= 11 q=13.0 size=       1kB time=00:00:02.67 bitrate=   2frame=  159 fps= 11 q=18.0 size=       1kB time=00:00:03.00 bitrate=   2frame=  164 fps= 11 q=22.0 size=       1kB time=00:00:03.21 bitrate=   2frame=  174 fps= 11 q=22.0 size=       1kB time=00:00:03.63 bitrate=   2frame=  179 fps= 11 q=20.0 size=       1kB time=00:00:03.83 bitrate=   1frame=  187 fps= 11 q=20.0 size=       1kB time=00:00:04.17 bitrate=   1frame=  189 fps= 10 q=21.0 size=       1kB time=00:00:04.25 bitrate=   1frame=  192 fps= 10 q=22.0 size=       1kB time=00:00:04.38 bitrate=   1frame=  195 fps=8.0 q=20.0 size=       1kB time=00:00:04.50 bitrate=   1frame=  201 fps=8.0 q=11.0 size=       1kB time=00:00:04.67 bitrate=   1Killeds/s speed=0.187x


  


• ffmpeg realtime bad quality variable fps cams inputs to constant framerate problem

  23 janvier 2023, par BloodMan

      ../ffmpeg/ffmpeg -err_detect ignore_err -nostdin -threads 0 -y -strict experimental -thread_queue_size 10M -max_delay 20M -rtbufsize 20M -fflags +discardcorrupt \
        -i "${cam1}" -i "${cam2}" -i "${cam3}" -i "${cam4}" \
        -filter_complex " \
        nullsrc=size=3840x2160:rate=30 [main1]; \
        anullsrc=channel_layout=stereo:sample_rate=44100 [a]; \
        [0:v] scale=1920:1080 [overlay1]; \
        [1:v] scale=1920:1080 [overlay2]; \
        [2:v] scale=1920:1080 [overlay3]; \
        [3:v] scale=1920:1080 [overlay4]; \
        [main1][overlay1] overlay=0:0 [main2]; \
        [main2][overlay2] overlay=1920:0 [main3]; \
        [main3][overlay3] overlay=0:1080 [main4]; \
        [main4][overlay4] overlay=1920:1080 [v] " \
        -t 10 -r 30 -g 60 -map "[v]" -map "[a]" \
        -shortest -video_size 3840x2160 -pix_fmt yuv420p -vcodec libx264 -preset ultrafast -tune zerolatency -minrate 2M -maxrate 2M -bufsize 20M -c:a aac -b:a 96k -ac 2 -ar 48000 -copytb 1 \
        -f flv -y -fflags +genpts rtmp://b.rtmp.youtube.com/live2/${key}?backup=1


  


  ffmpeg version N-109650-g9d5e66942c Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 10 (Debian 10.2.1-6)
  configuration: --prefix=/home/bloodman/ffmpeg --pkg-config-flags=--static --extra-cflags='-I/home/bloodman/ffmpeg/include -march=native' --extra-ldflags=-L/home/bloodman/ffmpeg/lib --extra-libs='-lpthread -lm' --bindir=/home/bloodman/ffmpeg --enable-gpl --enable-nonfree --enable-libx264 --enable-libfdk-aac --enable-libmp3lame --enable-libfreetype --enable-hardcoded-tables
  libavutil      57. 44.100 / 57. 44.100
  libavcodec     59. 56.100 / 59. 56.100
  libavformat    59. 35.100 / 59. 35.100
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 54.100 /  8. 54.100
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db77780] Opening 'cams/stream1_113.ts' for reading
Input #0, hls, from 'cams/stream1.m3u8':
  Duration: N/A, start: 1122.341667, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #0:0: Video: h264 (Baseline) ([27][0][0][0] / 0x001B), yuv420p, 2048x1536, 15 fps, 15 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019db9e980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db9e980] Opening 'cams/stream2_105.ts' for reading
Input #1, hls, from 'cams/stream2.m3u8':
  Duration: N/A, start: 1042.633000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #1:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 100 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019dccdbc0] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019dccdbc0] Opening 'cams/stream3_14.ts' for reading
Input #2, hls, from 'cams/stream3.m3u8':
  Duration: N/A, start: 132.469000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #2:0: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 2688x1520, 25 fps, 100 tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
[hls @ 0x56019f0ec980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019f0ec980] Opening 'cams/stream4_26.ts' for reading
Input #3, hls, from 'cams/stream4.m3u8':
  Duration: N/A, start: 253.389000, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 0
  Stream #3:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc, bt709), 1920x1080, 90k tbr, 90k tbn
    Metadata:
      variant_bitrate : 0
Stream mapping:
  Stream #0:0 (h264) -> scale:default
  Stream #1:0 (h264) -> scale:default
  Stream #2:0 (h264) -> scale:default
  Stream #3:0 (h264) -> scale:default
  overlay:default -> Stream #0:0 (libx264)
  anullsrc:default -> Stream #0:1 (aac)
[hls @ 0x56019db77780] Opening 'cams/stream1_114.ts' for reading
[hls @ 0x56019db77780] Opening 'cams/stream1_115.ts' for reading
[swscaler @ 0x5601a2c78e40] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a332c940] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a2c78e40] deprecated pixel format used, make sure you did set range correctly
    Last message repeated 2 times
[swscaler @ 0x5601a332c940] deprecated pixel format used, make sure you did set range correctly
[swscaler @ 0x5601a361fc00] deprecated pixel format used, make sure you did set range correctly
    Last message repeated 1 times
[libx264 @ 0x56019e5212c0] using SAR=1/1
[libx264 @ 0x56019e5212c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
[libx264 @ 0x56019e5212c0] profile Constrained Baseline, level 5.1, 4:2:0, 8-bit
[libx264 @ 0x56019e5212c0] 264 - core 160 r3011 cde9a93 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - 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=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=8 lookahead_threads=8 sliced_threads=1 slices=8 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0 keyint=60 keyint_min=6 scenecut=0 intra_refresh=0 rc_lookahead=0 rc=crf mbtree=0 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2000 vbv_bufsize=20000 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=0
Output #0, flv, to 'rtmp://b.rtmp.youtube.com/live2/XXXX-XXXX-XXXX-XXXX-XXXX?backup=1':
  Metadata:
    encoder         : Lavf59.35.100
  Stream #0:0: Video: h264 ([7][0][0][0] / 0x0007), yuv420p(progressive), 3840x2160 [SAR 1:1 DAR 16:9], q=2-31, 30 fps, 1k tbn
    Metadata:
      encoder         : Lavc59.56.100 libx264
    Side data:
      cpb: bitrate max/min/avg: 2000000/0/0 buffer size: 20000000 vbv_delay: N/A
  Stream #0:1: Audio: aac (LC) ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 96 kb/s
    Metadata:
      encoder         : Lavc59.56.100 aac
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')00:00:03.22 bitrate=7519.6kbits/s speed=0.359x
[hls @ 0x56019db77780] Opening 'cams/stream1_116.ts' for reading
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')00:00:07.23 bitrate=4470.2kbits/s speed=0.383x
[hls @ 0x56019db77780] Opening 'cams/stream1_117.ts' for reading
[hls @ 0x56019f0ec980] Skip ('#EXT-X-VERSION:3')00:00:09.04 bitrate=3978.1kbits/s speed=0.384x
[hls @ 0x56019f0ec980] Opening 'cams/stream4_27.ts' for reading
[hls @ 0x56019dccdbc0] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019dccdbc0] Opening 'cams/stream3_15.ts' for reading
[hls @ 0x56019db9e980] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db9e980] Opening 'cams/stream2_106.ts' for reading
[flv @ 0x56019e639a00] Failed to update header with correct duration.811.6kbits/s speed=0.385x
[flv @ 0x56019e639a00] Failed to update header with correct filesize.
frame=  299 fps= 12 q=34.0 Lsize=    4622kB time=00:00:09.98 bitrate=3792.7kbits/s speed=0.386x
video:4603kB audio:3kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.349536%
[libx264 @ 0x56019e5212c0] frame I:5     Avg QP:45.60  size:275880
[libx264 @ 0x56019e5212c0] frame P:294   Avg QP:38.77  size: 11340
[libx264 @ 0x56019e5212c0] mb I  I16..4: 100.0%  0.0%  0.0%
[libx264 @ 0x56019e5212c0] mb P  I16..4:  1.4%  0.0%  0.0%  P16..4:  4.7%  0.0%  0.0%  0.0%  0.0%    skip:93.9%
[libx264 @ 0x56019e5212c0] coded y,uvDC,uvAC intra: 16.2% 8.9% 1.2% inter: 1.8% 0.6% 0.0%
[libx264 @ 0x56019e5212c0] i16 v,h,dc,p: 64% 17% 15%  5%
[libx264 @ 0x56019e5212c0] i8c dc,h,v,p: 90%  6%  3%  1%
[libx264 @ 0x56019e5212c0] kb/s:3783.23
[aac @ 0x56019e63a700] Qavg: 65511.207
[hls @ 0x56019db77780] Skip ('#EXT-X-VERSION:3')
[hls @ 0x56019db77780] Opening 'cams/stream1_118.ts' for reading


  


  NOTES : sources are cams streamed first to hls/m3u8. -t 10 only for testing purposes.

  


  The problem is variable output fps= 12 (sometimes 2, 5, 10, maybe 13) where I expect 30. Machine is 10 times greater (encode uses up to 5% cpu).

  


  Im trying adding -re, -r 30, -r 15 to sources, convert sources via stream_filter (,fps=30), vsync (old versions of ffmpeg), wallclock time, etc. and reading stackoverflow of course. And... nothing.

  


  Where is the problem ?

  


• VideoWriter Doesn't work using openCV, ubuntu, Qt

  25 janvier 2023, par underflow223

  My code :

  


  cv::VideoWriter(
  strFile.toStdString(),
  cv::VideoWriter::fourcc('m','p','4','v'),
  nfps,
  cv::Size(1920/nresize, 1080/nresize)
);


  


  Error message :

  


  [mpeg4_v4l2m2m @ 0x7f50a43c50] arm_release_ver of this libmali is 'g6p0-01eac0', rk_so_ver is '7'.
Could not find a valid device
[mpeg4_v4l2m2m @ 0x7f50a43c50] can't configure encoder


  


  If I use MJPG codec, it works fine thow.

  


  This is OPENCV configure info :

  


  -- General configuration for OpenCV 4.6.0 =====================================
--   Version control:               unknown
-- 
--   Extra modules:
--     Location (extra):            /home/firefly/Downloads/opencv_contrib-4.6.0/modules
--     Version control (extra):     unknown
-- 
--   Platform:
--     Timestamp:                   2023-01-19T02:11:26Z
--     Host:                        Linux 5.10.110 aarch64
--     CMake:                       3.16.3
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               Release
-- 
--   CPU/HW features:
--     Baseline:                    NEON FP16
-- 
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ standard:                11
--     C++ Compiler:                /usr/bin/c++  (ver 9.4.0)
--     C++ flags (Release):         -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections    -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
--     Linker flags (Debug):        -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:          dl m pthread rt
--     3rdparty dependencies:
-- 
--   OpenCV modules:
--     To be built:                 aruco barcode bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dnn_superres dpm face features2d flann freetype fuzzy gapi hfs highgui img_hash imgcodecs imgproc intensity_transform line_descriptor mcc ml objdetect optflow phase_unwrapping photo plot quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab wechat_qrcode xfeatures2d ximgproc xobjdetect xphoto
--     Disabled:                    world
--     Disabled by dependency:      -
--     Unavailable:                 alphamat cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv hdf java julia matlab ovis python2 python3 sfm viz
--     Applications:                tests perf_tests apps
--     Documentation:               NO
--     Non-free algorithms:         NO
-- 
--   GUI:                           GTK3
--     GTK+:                        YES (ver 3.24.20)
--       GThread :                  YES (ver 2.64.6)
--       GtkGlExt:                  NO
--     VTK support:                 NO
-- 
--   Media I/O: 
--     ZLib:                        /usr/lib/aarch64-linux-gnu/libz.so (ver 1.2.11)
--     JPEG:                        /usr/lib/aarch64-linux-gnu/libjpeg.so (ver 80)
--     WEBP:                        build (ver encoder: 0x020f)
--     PNG:                         /usr/lib/aarch64-linux-gnu/libpng.so (ver 1.6.37)
--     TIFF:                        /usr/lib/aarch64-linux-gnu/libtiff.so (ver 42 / 4.1.0)
--     JPEG 2000:                   build (ver 2.4.0)
--     OpenEXR:                     build (ver 2.3.0)
--     HDR:                         YES
--     SUNRASTER:                   YES
--     PXM:                         YES
--     PFM:                         YES
-- 
--   Video I/O:
--     DC1394:                      YES (2.2.5)
--     FFMPEG:                      YES
--       avcodec:                   YES (58.54.100)
--       avformat:                  YES (58.29.100)
--       avutil:                    YES (56.31.100)
--       swscale:                   YES (5.5.100)
--       avresample:                YES (4.0.0)
--     GStreamer:                   YES (1.16.2)
--     v4l/v4l2:                    YES (linux/videodev2.h)
-- 
--   Parallel framework:            pthreads
-- 
--   Trace:                         YES (with Intel ITT)
-- 
--   Other third-party libraries:
--     Lapack:                      NO
--     Eigen:                       NO
--     Custom HAL:                  YES (carotene (ver 0.0.1))
--     Protobuf:                    build (3.19.1)
-- 
--   OpenCL:                        YES (no extra features)
--     Include path:                /home/firefly/Downloads/opencv-4.6.0/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
-- 
--   Python (for build):            /usr/bin/python2.7
-- 
--   Java:                          
--     ant:                         NO
--     JNI:                         NO
--     Java wrappers:               NO
--     Java tests:                  NO
-- 
============================================================================================


  


  ffmpeg info :

  


  ============================================================================================
ffmpeg
ffmpeg version 4.2.4-1ubuntu1.0firefly5 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
  configuration: --prefix=/usr --extra-version=1ubuntu1.0firefly5 --toolchain=hardened --libdir=/usr/lib/aarch64-linux-gnu --incdir=/usr/include/aarch64-linux-gnu --arch=arm64 --enable-gpl --disable-stripping --enable-avresample --disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --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-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --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-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libdrm --enable-librga --enable-rkmpp --enable-version3 --disable-libopenh264 --disable-vaapi --disable-vdpau --disable-decoder=h264_v4l2m2m --disable-decoder=vp8_v4l2m2m --disable-decoder=mpeg2_v4l2m2m --disable-decoder=mpeg4_v4l2m2m --enable-shared --disable-doc
  libavutil      56. 31.100 / 56. 31.100
  libavcodec     58. 54.100 / 58. 54.100
  libavformat    58. 29.100 / 58. 29.100
  libavdevice    58.  8.100 / 58.  8.100
  libavfilter     7. 57.100 /  7. 57.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  5.100 /  5.  5.100
  libswresample   3.  5.100 /  3.  5.100
  libpostproc    55.  5.100 / 55.  5.100
Hyper fast Audio and Video encoder
usage: ffmpeg [options] [[infile options] -i infile]... {[outfile options] outfile}...
====================================================================================