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  • ffmpeg "Underestimated required buffer size"

    10 avril 2021, par Kajuna

    I'm seeing this error on some Windows machine when converting an 8K png stream to ProRes 4444 with ffmpeg. The command looks like

    


    


    ffmpeg -f image2pipe -framerate 30000/1001 -i - -c:v prores_ks -y output.mov

    


    


    And the output

    


    


    ffmpeg version git-2020-06-17-0b3bd00 Copyright (c) 2000-2020 the
FFmpeg developers built with gcc 9.3.1 (GCC) 20200523
    
configuration : —enable-gpl —enable-version3 —enable-sdl2
—enable-fontconfig —enable-gnutls —enable-iconv —enable-libass —enable-libdav1d —enable-libbluray —enable-libfreetype —enable-libmp3lame —enable-libopencore-amrnb —enable-libopencore-amrwb —enable-libopenjpeg —enable-libopus —enable-libshine —enable-libsnappy —enable-libsoxr —enable-libsrt —enable-libtheora —enable-libtwolame —enable-libvpx —enable-libwavpack —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxml2 —enable-libzimg —enable-lzma —enable-zlib —enable-gmp —enable-libvidstab —enable-libvmaf —enable-libvorbis —enable-libvo-amrwbenc —enable-libmysofa —enable-libspeex —enable-libxvid —enable-libaom —disable-w32threads —enable-libmfx —enable-ffnvcodec —enable-cuda-llvm —enable-cuvid —enable-d3d11va —enable-nvenc —enable-nvdec —enable-dxva2 —enable-avisynth —enable-libopenmpt —enable-amf libavutil 56. 55.100 / 56. 55.100 libavcodec 58. 92.100 / 58. 92.100 libavformat 58. 46.101 / 58. 46.101 libavdevice 58. 11.100 / 58. 11.100 libavfilter 7. 86.100 / 7. 86.100 libswscale 5. 8.100 /
5. 8.100 libswresample 3. 8.100 / 3. 8.100 libpostproc 55. 8.100 / 55. 8.100 [image2pipe @ 000002245a96da40] Stream #0 : not enough frames to estimate rate ; consider increasing probesize Input
#0, image2pipe, from 'pipe :' : Duration : N/A, bitrate : N/A
Stream #0:0 : Video : png, rgba(pc), 7680x3840, 29.97 tbr, 29.97 tbn, 29.97 tbc Stream mapping : Stream #0:0 -> #0:0 (png (native) ->
prores (prores_ks)) frame= 0 fps=0.0 q=0.0 size= 0kB
time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A frame= 0
fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate=
-0.0kbits/s speed=N/A frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A frame= 0
fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate=
-0.0kbits/s speed=N/A frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A [prores_ks @
000002245aaaf080] Autoselected 4:4:4:4 profile because of the used
input colorspace. It can be overridden through -profile option.
[prores_ks @ 000002245aaaf700] Autoselected 4:4:4:4 profile because of
the used input colorspace. It can be overridden through -profile
option. [prores_ks @ 000002245aa1e7c0] Autoselected 4:4:4:4 profile
because of the used input colorspace. It can be overridden through
-profile option. [prores_ks @ 000002245aa1d580] Autoselected 4:4:4:4 profile because of the used input colorspace. It can be overridden
through -profile option. [prores_ks @ 000002245aa1ec40] Autoselected
4:4:4:4 profile because of the used input colorspace. It can be
overridden through -profile option. [prores_ks @ 000002245aa1da00]
Autoselected 4:4:4:4 profile because of the used input colorspace. It
can be overridden through -profile option. [prores_ks @
000002245aa1f540] Autoselected 4:4:4:4 profile because of the used
input colorspace. It can be overridden through -profile option.
[prores_ks @ 000002245aa1de80] Autoselected 4:4:4:4 profile because of
the used input colorspace. It can be overridden through -profile
option. [prores_ks @ 000002245a972b40] Autoselected 4:4:4:4 profile
because of the used input colorspace. It can be overridden through
-profile option. Output #0, mov, to 'output.mov' : Metadata :
encoder : Lavf58.46.101
Stream #0:0 : Video : prores (prores_ks) (ap4h / 0x68347061), yuva444p10le, 7680x3840, q=2-31, 200 kb/s, 29.97 fps, 30k tbn, 29.97
tbc
Metadata :
encoder : Lavc58.92.100 prores_ks frame= 1 fps=0.2 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x
    
frame= 2 fps=0.3 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A
speed= 0x frame= 3 fps=0.4 q=0.0 size= 0kB
time=00:00:00.00 bitrate=N/A speed= 0x frame= 4 fps=0.4 q=0.0
size= 0kB time=00:00:00.00 bitrate=N/A speed= 0x frame=
    
5 fps=0.5 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed=
    
0x [prores_ks @ 000002245aaaf080] Underestimated required buffer
size. Video encoding failed [prores_ks @ 000002245aaaf700]
Underestimated required buffer size. [prores_ks @ 000002245aa1e7c0]
Underestimated required buffer size. [prores_ks @ 000002245aa1d580]
Underestimated required buffer size. [prores_ks @ 000002245aa1ec40]
Underestimated required buffer size. [prores_ks @ 000002245aa1da00]
Underestimated required buffer size. Conversion failed !

    


    


    How could I debug this considering I don't have access to the problematic machine (a user does) ? Could the "not enough frames to estimate rate ; consider increasing probesize" message be related to the problem ?

    


    Thanks

    


    Edit : I increased probesize and that warning disappeared, but the conversion keeps failing with the same error message "Underestimated required buffer size". I can now reproduce this on one of my Windows machines.

    


    Edit 2 : Not a solution but I found out that this problem is gone if using ffmpeg 4.2.3 and was introduced with 4.3

    


  • ffmpeg conversion x264 [error] : malloc of size 26200384 failed [closed]

    13 janvier 2021, par Anshul Singh

    I'm trying to use FFMPEG to transcode a video with very large frames but I'm getting the following error when trying to convert 4k video on my server.

    


    ffmpeg version N-55112-g7eb9cf593e-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 8 (Debian 8.3.0-6)
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --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-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libdav1d --enable-libxvid --enable-libzvbi --enable-libzimg  libavutil      56. 61.100 / 56. 61.100\n  libavcodec     58.114.100 / 58.114.100
     libavformat    58. 64.100 / 58. 64.100
      libavdevice    58. 11.103 / 58. 11.103
       libavfilter     7. 91.100 /  7. 91.100
         libswscale      5.  8.100 
/  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
    libpostproc    55.  8.100 / 55.  8.100
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5d798c0] st: 0 edit list: 1 Missing key frame while searching for timestamp: 0
    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x5d798c0] st: 0 edit list 1 Cannot find an index entry before timestamp: 0.
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'https://example.com':
      Metadata:
        major_brand     : mp42
        minor_version   : 0
        compatible_brands: mp42mp41
        creation_time   : 2015-07-28T16:09:40.000000Z
        Duration: 00:00:15.04, start: 0.000000, bitrate: 41976 kb/s
        Stream #0:0(eng): Video: h264 (Main) (avc1 / 0x31637661), 
    yuv420p(tv, bt709), 3840x2160, 41762 kb/s, 25 fps, 25 tbr, 25k tbn, 50 tbc (default)
    Metadata:
    creation_time   : 2015-07-28T16:09:40.000000Z
    handler_name    : ?Mainconcept Video Media Handler
    encoder         : AVC Coding
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 317 kb/s (default)
    Metadata:
    creation_time   : 2015-07-28T16:09:40.000000Z
    handler_name    : #Mainconcept MP4 Sound Media Handler
    Stream mapping:
        Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
        Stream #0:1 -> #0:1 (aac (native) -> aac (native))
        Press [q] to stop, [?] for help
        [libx264 @ 0x5d92240] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
        [libx264 @ 0x5d92240] profile Main, level 5.1, 4:2:0, 8-bit
        [libx264 @ 0x5d92240] 264 - core 161 r3027 4121277 - H.264/MPEG-4 AVC codec - Copyleft 2003-2020 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 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=1 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=abr mbtree=1 bitrate=750 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
        frame=    6 fps=0.0 q=0.0 size=       0kB time=-577014:32:22.77 bitrate=  -0.0kbits/s speed=N/A    \rx264 [error]: malloc of size 26200384 failed
        Video encoding failed
        [libx264 @ 0x5d92240] final ratefactor: 40.36
        Conversion failed!


    


    My server has 1Gb of memory.

    


  • ffmpeg is not capturing udp output

    30 octobre 2020, par Dzidas

    I'm trying to capture UDP output with ffmpeg, but the stream looks empty. Just for background, the output is produced by GoPro camera and I'm connecting to its Wifi. I can see with wireshark a lot of udp packets sent to my ip from GoPro IP, but nothing appears in ffmpeg.

    


    ffplay -fflags nobuffer -f:v mpegts -probesize 8192 udp://10.5.5.9:8554
ffplay version 4.3.1 Copyright (c) 2003-2020 the FFmpeg developers
built with Apple clang version 11.0.0 (clang-1100.0.33.17)
configuration: --prefix=/usr/local/Cellar/ffmpeg/4.3.1_2 --enable-shared --enable-pthreads --enable-version3 --enable-avresample --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-librtmp --enable-libspeex --enable-libsoxr --enable-videotoolbox --disable-libjack --disable-indev=jack
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
nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0


    


    Any idea or suggestion how could I debug or understand the cause ?

    


    Thanks !

    


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