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• FFmpeg avutil.lib unresolved external symbol

  2 août 2022, par Sere

  i'm trying to use FFmpeg with visual sudio 2022 .NET 6 through an MSVC project.
I followed this tutorial : https://www.youtube.com/watch?v=qMNr1Su-nR8&ab_channel=HakanSoyalp.
I mean I have configureg Include (.h) file, library (.lib) files and dynamic (.dll) file copied into bin folder.
If I call for example the avformat_alloc_context() method inside the avformat.lib all work rightly, if I call for example av_file_map(...) inside the avutil.lib the compiler give me an error :
LNK2019 unresolved external symbol "int __cdecl av_file_map ...
But the avutil.lib is linked !!!
The same happen if I call other methods inside avutil.lib module.

  


  Thanks for help...

  


  Code :

  


  extern "C"&#xA;{&#xA;    #include <libavformat></libavformat>avformat.h>&#xA;    #include <libavutil></libavutil>file.h> // av_file_map&#xA;}&#xA;&#xA;int ConvertJPEGtoNALs(int argc, char* argv[])&#xA;{&#xA;    AVFormatContext* fmt_ctx = NULL;&#xA;    AVIOContext* avio_ctx = NULL;&#xA;    uint8_t* buffer = NULL, * avio_ctx_buffer = NULL;&#xA;    size_t buffer_size, avio_ctx_buffer_size = 4096;&#xA;    char* input_filename = NULL;&#xA;    int ret = 0;&#xA;    struct buffer_data bd = { 0 };&#xA;    if (argc != 2) {&#xA;        fprintf(stderr, "usage: %s input_file\n"&#xA;            "API example program to show how to read from a custom buffer "&#xA;            "accessed through AVIOContext.\n", argv[0]);&#xA;        return 1;&#xA;    }&#xA;    input_filename = argv[1];&#xA;    /* register codecs and formats and other lavf/lavc components*/&#xA;    //av_register_all();    //!deprecated&#xA;    /* slurp file content into buffer */&#xA;    ret = av_file_map(input_filename, &amp;buffer, &amp;buffer_size, 0, NULL);&#xA;    /* fill opaque structure used by the AVIOContext read callback */&#xA;    bd.ptr = buffer;&#xA;    bd.size = buffer_size; ???&#xA;    if (!(fmt_ctx = avformat_alloc_context())) {&#xA;        ret = AVERROR(ENOMEM);&#xA;        goto end;&#xA;    }&#xA;    //... to be continue ...&#xA;}&#xA;

  


• encoding jpeg sequence with ffmpeg

  2 août 2022, par Frog person

  I do not have much expertise. I have been trying to convert a 240 jpeg long sequence (in a folder named plane) in to a 24fps mp4 file. each file is named 0001.jpeg , 0002.jpeg and so on.
I have tried this
ffmpeg -framerate 24 -i C :\Desktop\plane\image%4d.jpg output.mp4 and some variations on that but nothing seems to work.

  


  the above command results in this

  


  C :\Users\username>ffmpeg -framerate 24 -i C :\Desktop\plane\image%4d.jpg output.mp4
ffmpeg version 2022-07-31-git-1368b5a725-essentials_build-www.gyan.dev Copyright (c) 2000-2022 the FFmpeg developers
built with gcc 12.1.0 (Rev2, Built by MSYS2 project)
configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-bzlib —enable-lzma —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-sdl2 —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-mediafoundation —enable-libass —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libgme —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libtheora —enable-libvo-amrwbenc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-librubberband
libavutil 57. 30.100 / 57. 30.100
libavcodec 59. 40.100 / 59. 40.100
libavformat 59. 29.100 / 59. 29.100
libavdevice 59. 8.101 / 59. 8.101
libavfilter 8. 46.101 / 8. 46.101
libswscale 6. 8.101 / 6. 8.101
libswresample 4. 8.100 / 4. 8.100
libpostproc 56. 7.100 / 56. 7.100
[image2 @ 0000018847e4d500] Could find no file with path 'C :\Desktop\plane\image%4d.jpg' and index in the range 0-4
C :\Desktop\plane\image%4d.jpg : No such file or directory

  


  Any help will be greatly appreciated

  


• looking for Settings for FFmpeg, xTeVe, Plex [closed]

  3 août 2022, par Chris

  I am not sure if I am in the right place. But maybe someone can help me.

  


  Sorry for my bad english.

  


  I have a Qnap NAS, on this is insalled FFmepg, xTeVe and Plex.
I try to see IPTV Streams on Plex.

  


  Here the log file from xTeVe :

  


  ---

  


  2022-02-28 21:57:42 [xTeVe] Buffer : true [ffmpeg]

  


  2022-02-28 21:57:42 [xTeVe] Buffer Size : 4096 KB

  


  2022-02-28 21:57:42 [xTeVe] Channel Name : VIP SW : SRF 1 FHD

  


  2022-02-28 21:57:42 [xTeVe] Client User-Agent : Lavf/58.65.101

  


  2022-02-28 21:57:43 [xTeVe] Streaming Status : Playlist : Schweiz Neu - Tuner : 1 / 1

  


  2022-02-28 21:57:43 [xTeVe] FFMPEG path : /usr/bin/ffmpeg

  


  2022-02-28 21:57:43 [xTeVe] Streaming URL : http://tunestream.me:8080/XXXXXXX
/XXXXXXXX/9165

  


  2022-02-28 21:57:43 [xTeVe] FFMPEG : Processing data

  


  2022-02-28 21:57:43 [xTeVe] Streaming Status : Receive data from FFMPEG

  


  2022-02-28 21:57:43 [xTeVe] FFMPEG log : [mpegts @ 0x55e0732fe560] dimensions
not set

  


  2022-02-28 21:57:43 [xTeVe] [ERROR] FFMPEG error (Streaming was stopped by third party
transcoder (FFmpeg / VLC)) - EC : 1204

  


  2022-02-28 21:57:43 [xTeVe] FFMPEG log : Could not write header for output file
#0 (incorrect codec parameters ?) : Invalid argument

  


  2022-02-28 21:57:43 [xTeVe] FFMPEG log :

  


  2022-02-28 21:57:43 [xTeVe] Streaming Status : Client has terminated the connection

  


  2022-02-28 21:57:43 [xTeVe] Streaming Status : Channel : VIP SW : SRF 1 FHD (Clients : 0)

  


  2022-02-28 21:57:44 [xTeVe] Streaming Status : Channel : VIP SW : SRF 1 FHD - No client
is using this channel anymore. Streaming Server connection has ended

  


  2022-02-28 21:57:44 [xTeVe] Streaming Status : Playlist : Schweiz Neu - Tuner : 0 / 1

  


  ---

  


  on xTeVe i set this settings :

  


  Buffer Size : 5 MB

  


  Timeout for new client connections : 500

  


  FFmpeg Options : -hide_banner -loglevel error -i [URL] -c copy -f mpegts pipe:1

  


  If i put the Streaming URL on VLC is working.
But not with FFmpeg, xTeVe and Plex.

  


  Thanks for your help.

  


  Greetings
Chris