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• "wrong sample count" When reading MP4 files using OpenCV

  26 octobre 2022, par Object Unknown

  I want to marge some mp4 videos using OpenCV library, but when I try to read those videos using cv::VideoCapture, it outputs like that :

  


  [mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9AAE9D80] co located POCs unavailable
[h264 @ 000001EB9AAE7D80] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9A128600] co located POCs unavailable
[h264 @ 000001EB9A129840] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB9AA28E40] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9A169B00] co located POCs unavailable
[h264 @ 000001EB9A16B680] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB960CD680] co located POCs unavailable
[h264 @ 000001EB960CC8C0] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9A81DDC0] co located POCs unavailable
[h264 @ 000001EB9A81B000] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB960CB200] co located POCs unavailable
[h264 @ 000001EB960CBFC0] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB99F206C0] co located POCs unavailable
[h264 @ 000001EB99F20B40] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9A81D480] co located POCs unavailable
[h264 @ 000001EB9A81B000] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9AD02C00] co located POCs unavailable
[h264 @ 000001EB9AD02300] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9A81B480] co located POCs unavailable
[h264 @ 000001EB9A81B940] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[h264 @ 000001EB9AD02780] co located POCs unavailable
[h264 @ 000001EB9AD01E40] co located POCs unavailable
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001EB96084B80] wrong sample count


  


  and just exited with exit value 0. I want to know why it is reporting this and how to solve it please.

  


  Heres my demo code :

  


  #include <string>&#xA;#include <iostream>&#xA;#include <opencv2></opencv2>core/core.hpp>&#xA;#include <opencv2></opencv2>video/video.hpp>&#xA;#include <opencv2></opencv2>imgproc/imgproc.hpp>&#xA;#include <opencv2></opencv2>videoio/videoio.hpp>&#xA;#include <opencv2></opencv2>highgui/highgui.hpp>&#xA;&#xA;int main()&#xA;{&#xA;        cv::Mat frame;&#xA;        cv::VideoCapture vcap;&#xA;        for (int i = 1; i &lt;= 60; i&#x2B;&#x2B;)&#xA;        {&#xA;            if (!vcap.open("G:\\Users\\15819\\Desktop\\Demo\\demo (" &#x2B; std::to_string(i) &#x2B; ").mp4"))&#xA;            {&#xA;                std::cout &lt;&lt; "Failed to Open File: demo (" &lt;&lt; i &lt;&lt; ").mp4" &lt;&lt; std::endl;&#xA;                continue;&#xA;            }&#xA;            while (!vcap.read(frame))&#xA;                cv::imshow("video", frame);&#xA;        }&#xA;        return 0;&#xA;}&#xA;</iostream></string>

  


  I installed the OpenCV and FFmpeg library using vcpkg, here's the library information (displayed by vcpkg list command) :

  


  ffmpeg:x64-windows                                4.4.1#21            a library to decode, encode, transcode, mux, dem...
ffmpeg:x86-windows                                4.4.1#21            a library to decode, encode, transcode, mux, dem...
ffmpeg[avcodec]:x64-windows                                           Build the avcodec library
ffmpeg[avcodec]:x86-windows                                           Build the avcodec library
ffmpeg[avdevice]:x64-windows                                          Build the avdevice library
ffmpeg[avdevice]:x86-windows                                          Build the avdevice library
ffmpeg[avfilter]:x64-windows                                          Build the avfilter library
ffmpeg[avfilter]:x86-windows                                          Build the avfilter library
ffmpeg[avformat]:x64-windows                                          Build the avformat library
ffmpeg[avformat]:x86-windows                                          Build the avformat library
ffmpeg[openh264]:x64-windows                                          H.264 de/encoding via openh264
ffmpeg[openh264]:x86-windows                                          H.264 de/encoding via openh264
ffmpeg[swresample]:x64-windows                                        Build the swresample library
ffmpeg[swresample]:x86-windows                                        Build the swresample library
ffmpeg[swscale]:x64-windows                                           Build the swscale library
ffmpeg[swscale]:x86-windows                                           Build the swscale library
opencv4:x64-windows                               4.6.0#6             computer vision library
opencv4:x86-windows                               4.6.0#6             computer vision library
opencv4[default-features]:x64-windows                                 Platform-dependent default features
opencv4[default-features]:x86-windows                                 Platform-dependent default features
opencv4[dnn]:x64-windows                                              Enable dnn module
opencv4[dnn]:x86-windows                                              Enable dnn module
opencv4[ffmpeg]:x64-windows                                           ffmpeg support for opencv
opencv4[ffmpeg]:x86-windows                                           ffmpeg support for opencv
opencv4[jpeg]:x64-windows                                             JPEG support for opencv
opencv4[jpeg]:x86-windows                                             JPEG support for opencv
opencv4[png]:x64-windows                                              PNG support for opencv
opencv4[png]:x86-windows                                              PNG support for opencv
opencv4[qt]:x64-windows                                               Qt GUI support for opencv
opencv4[qt]:x86-windows                                               Qt GUI support for opencv
opencv4[quirc]:x64-windows                                            Enable QR code module
opencv4[quirc]:x86-windows                                            Enable QR code module
opencv4[tiff]:x64-windows                                             TIFF support for opencv
opencv4[tiff]:x86-windows                                             TIFF support for opencv
opencv4[webp]:x64-windows                                             WebP support for opencv
opencv4[webp]:x86-windows                                             WebP support for opencv
opencv:x64-windows                                4.6.0               Computer vision library
opencv:x86-windows                                4.6.0               Computer vision library
opencv[default-features]:x64-windows                                  Platform-dependent default features
opencv[default-features]:x86-windows                                  Platform-dependent default features
opencv[dnn]:x64-windows                                               Enable dnn module
opencv[dnn]:x86-windows                                               Enable dnn module
opencv[jpeg]:x64-windows                                              JPEG support for opencv
opencv[jpeg]:x86-windows                                              JPEG support for opencv
opencv[png]:x64-windows                                               PNG support for opencv
opencv[png]:x86-windows                                               PNG support for opencv
opencv[quirc]:x64-windows                                             Enable QR code module
opencv[quirc]:x86-windows                                             Enable QR code module
opencv[tiff]:x64-windows                                              TIFF support for opencv
opencv[tiff]:x86-windows                                              TIFF support for opencv
opencv[webp]:x64-windows                                              WebP support for opencv
opencv[webp]:x86-windows                                              WebP support for opencv


  


  Other Environments :

  


  OS: Windows 11 x64 Professional Workstation
IDE: Visual Studio 2022
Project C++ Standard: C++14
Project Platform: x64 Release


  


• Stream is not appearing on youtube

  1er novembre 2022, par AMRITESH GUPTA

  I am trying to stream a captured stream to youtube live through FFmpeg, but the stream is not appearing on youtube. I tried giving input from an mp4 file, and it worked perfectly but providing input as a buffer through stdin gives nothing.

  


  FFmpeg command

  


  ffmpeg -rtbufsize 100M -report -i - -v error -c:v libx264 -preset veryfast -tune zerolatency -g:v 60 -c:a aac -strict -2 -ar 44100 -b:a 64k -y -use_wallclock_as_timestamps 1 -async 1 -f flv ${youtubeURL}

  


  I used -report for generating a log report, and I couldn't find anything wrong with it.

  


  Here is snippet of log file

  


  ffmpeg started on 2022-11-01 at 09:42:32
Report written to "ffmpeg-20221101-094232.log"
Log level: 48
Command line:
ffmpeg -rtbufsize 100M -report -i - -v error -c:v libx264 -preset veryfast -tune zerolatency -g:v 60 -c:a aac -strict -2 -ar 44100 -b:a 64k -y -use_wallclock_as_timestamps 1 -async 1 -f flv rtmp://a.rtmp.youtube.com/live2/pxjt-j9g5-ygv8-0000-6w8h
ffmpeg version 2022-10-27-git-00b03331a0-full_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-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --ena  libavutil      57. 39.101 / 57. 39.101
  libavcodec     59. 51.100 / 59. 51.100
  libavformat    59. 34.101 / 59. 34.101
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 49.101 /  8. 49.101
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
Splitting the commandline.
Reading option '-rtbufsize' ... matched as AVOption 'rtbufsize' with argument '100M'.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-i' ... matched as input url with argument '-'.
Reading option '-v' ... matched as option 'v' (set logging level) with argument 'error'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
Reading option '-tune' ... matched as AVOption 'tune' with argument 'zerolatency'.
Reading option '-g:v' ... matched as AVOption 'g:v' with argument '60'.
Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'aac'.
Reading option '-strict' ...Routing option strict to both codec and muxer layer
 matched as AVOption 'strict' with argument '-2'.
Reading option '-ar' ... matched as option 'ar' (set audio sampling rate (in Hz)) with argument '44100'.
Reading option '-b:a' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '64k'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Reading option '-use_wallclock_as_timestamps' ... matched as AVOption 'use_wallclock_as_timestamps' with argument '1'.
Reading option '-async' ... matched as AVOption 'async' with argument '1'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://a.rtmp.youtube.com/live2/pxjt-j9g5-ygv8-0000-6w8h' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option report (generate a report) with argument 1.
Applying option v (set logging level) with argument error.
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url -.
Successfully parsed a group of options.
Opening an input file: -.
[NULL @ 0000025c01844940] Opening 'pipe:' for reading
[pipe @ 0000025c01844e00] Setting default whitelist 'crypto,data'
[matroska,webm @ 0000025c01844940] Format matroska,webm probed with size=2048 and score=100
st:0 removing common factor 1000000 from timebase
[matroska,webm @ 0000025c01844940] Before avformat_find_stream_info() pos: 136 bytes read:32271 seeks:0 nb_streams:1
[extract_extradata @ 0000025c01817d40] nal_unit_type: 7(SPS), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 8(PPS), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[extract_extradata @ 0000025c01817d40] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] Format yuv420p chosen by get_format().
[h264 @ 0000025c0186aac0] Reinit context to 1280x384, pix_fmt: yuv420p
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[h264 @ 0000025c0186aac0] nal_unit_type: 1(Coded slice of a non-IDR picture), nal_ref_idc: 3
[matroska,webm @ 0000025c01844940] max_analyze_duration 5000000 reached at 22181000 microseconds st:0
[matroska,webm @ 0000025c01844940] rfps: 1.000000 0.006758
[matroska,webm @ 0000025c01844940] rfps: 2.000000 0.019257
[matroska,webm @ 0000025c01844940] rfps: 7.916667 0.017773
[matroska,webm @ 0000025c01844940] rfps: 9.916667 0.012828
[matroska,webm @ 0000025c01844940] rfps: 10.916667 0.019976
[matroska,webm @ 0000025c01844940] rfps: 16.833333 0.010482
[matroska,webm @ 0000025c01844940] rfps: 17.833333 0.007736
[matroska,webm @ 0000025c01844940] rfps: 17.833333 0.007736
[matroska,webm @ 0000025c01844940] rfps: 18.833333 0.018506
[matroska,webm @ 0000025c01844940] After avformat_find_stream_info() pos: 88442 bytes read:88443 seeks:0 frames:31
Input #0, matroska,webm, from 'pipe:':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0(eng), 31, 1/1000: Video: h264 (Constrained Baseline), yuv420p(progressive), 1280x382, SAR 1:1 DAR 640:191, 1 tbr, 1k tbn (default)
Successfully opened the file.
Parsing a group of options: output url rtmp://a.rtmp.youtube.com/live2/pxjt-j9g5-ygv8-0000-6w8h.
Applying option c:v (codec name) with argument libx264.
Applying option c:a (codec name) with argument aac.
Applying option ar (set audio sampling rate (in Hz)) with argument 44100.
Applying option b:a (video bitrate (please use -b:v)) with argument 64k.
Applying option f (force format) with argument flv.
Successfully parsed a group of options.
Opening an output file: rtmp://a.rtmp.youtube.com/live2/pxjt-j9g5-ygv8-0000-6w8h.
Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (rtmp://a.rtmp.youtube.com/live2/pxjt-j9g5-ygv8-0000-6w8h) has not been used for any stream. The most likely reason is either wrong type (e.g. a video option with no video streams) or that it is a private option of some encoder which was not actually used for any stream.
[rtmp @ 0000025c01d1bd00] No default whitelist set
[tcp @ 0000025c01844f40] No default whitelist set
[tcp @ 0000025c01844f40] Original list of addresses:
[tcp @ 0000025c01844f40] Address 142.250.193.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.193.236 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.108 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.140 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.172 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.12 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.44 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.76 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.108 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.140 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.172 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.236 port 1935
[tcp @ 0000025c01844f40] Address 142.250.195.12 port 1935
[tcp @ 0000025c01844f40] Address 142.250.207.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.207.236 port 1935
[tcp @ 0000025c01844f40] Interleaved list of addresses:
[tcp @ 0000025c01844f40] Address 142.250.193.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.193.236 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.108 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.140 port 1935
[tcp @ 0000025c01844f40] Address 142.250.206.172 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.12 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.44 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.76 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.108 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.140 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.172 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.194.236 port 1935
[tcp @ 0000025c01844f40] Address 142.250.195.12 port 1935
[tcp @ 0000025c01844f40] Address 142.250.207.204 port 1935
[tcp @ 0000025c01844f40] Address 142.250.207.236 port 1935
[tcp @ 0000025c01844f40] Starting connection attempt to 142.250.193.204 port 1935
[tcp @ 0000025c01844f40] Successfully connected to 142.250.193.204 port 1935
[rtmp @ 0000025c01d1bd00] Handshaking...
[rtmp @ 0000025c01d1bd00] Type answer 3
[rtmp @ 0000025c01d1bd00] Server version 4.0.0.1
[rtmp @ 0000025c01d1bd00] Proto = rtmp, path = /live2/pxjt-j9g5-ygv8-0000-6w8h, app = live2, fname = pxjt-j9g5-ygv8-0000-6w8h
[rtmp @ 0000025c01d1bd00] Window acknowledgement size = 2500000
[rtmp @ 0000025c01d1bd00] Max sent, unacked = 59768832
[rtmp @ 0000025c01d1bd00] Releasing stream...
[rtmp @ 0000025c01d1bd00] FCPublish stream...
[rtmp @ 0000025c01d1bd00] Creating stream...
[rtmp @ 0000025c01d1bd00] Sending publish command for 'pxjt-j9g5-ygv8-0000-6w8h'
Successfully opened the file.
detected 8 logical cores
[h264 @ 0000025c01882e00] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0000025c01882e00] nal_unit_type: 8(PPS), nal_ref_idc: 3
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
cur_dts is invalid st:0 (0) [init:0 i_done:0 finish:0] (this is harmless if it occurs once at the start per stream)
[matroska,webm @ 0000025c01844940] Thread message queue blocking; consider raising the thread_queue_size option (current value: 1)
[h264 @ 0000025c01882e00] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 0000025c01882e00] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 0000025


  


• ffmpeg-python Unable to open .srt, .vtt files. Error initializing filter 'subtitles' with args ... Error initializing complex filters

  3 novembre 2022, par Batuhan Yılmaz

  I'm trying to build a web app where users can upload a video file and a transcript as .srt or .vtt file to get a video with subtitles. But keep getting an error with the subtitles.
  
Here's my code :

  


  import streamlit as st
from streamlit_lottie import st_lottie
from utils import write_vtt, write_srt
import ffmpeg
import requests
from typing import Iterator
from io import StringIO
import numpy as np
import pathlib
import os
import components.authenticate as authenticate


st.set_page_config(page_title="Auto Subtitled Video Generator", page_icon=":movie_camera:", layout="wide")

# Define a function that we can use to load lottie files from a link.
@st.cache(allow_output_mutation=True)
def load_lottieurl(url: str):
    r = requests.get(url)
    if r.status_code != 200:
        return None
    return r.json()


APP_DIR = pathlib.Path(__file__).parent.absolute()

LOCAL_DIR = APP_DIR / "local_transcript"
LOCAL_DIR.mkdir(exist_ok=True)
save_dir = LOCAL_DIR / "output"
save_dir.mkdir(exist_ok=True)


col1, col2 = st.columns([1, 3])
with col1:
    lottie = load_lottieurl("https://assets1.lottiefiles.com/packages/lf20_HjK9Ol.json")
    st_lottie(lottie)

with col2:
    st.write("""
    ## Auto Subtitled Video Generator 
    ##### Upload a video file and a transcript as .srt file and get a video with subtitles.""")


def getSubs(segments: Iterator[dict], format: str, maxLineWidth: int) -> str:
    segmentStream = StringIO()

    if format == 'vtt':
        write_vtt(segments, file=segmentStream, maxLineWidth=maxLineWidth)
    elif format == 'srt':
        write_srt(segments, file=segmentStream, maxLineWidth=maxLineWidth)
    else:
        raise Exception("Unknown format " + format)

    segmentStream.seek(0)
    return segmentStream.read()


def generate_subtitled_video(uploaded_file):
    with open(f"{save_dir}/input.mp4", "wb") as f:
            f.write(uploaded_file.read())
    audio = ffmpeg.input(f"{save_dir}/input.mp4")
    audio = ffmpeg.output(audio, f"{save_dir}/output.wav", acodec="pcm_s16le", ac=1, ar="16k")
    ffmpeg.run(audio, overwrite_output=True)


def main():
    video_file = st.file_uploader("File", type=["mp4", "avi", "mov", "mkv"])
    # get the name of the input_file
    if video_file is not None:
        filename = video_file.name[:-4]
    else:
        filename = None
    transcript_file = st.file_uploader("Transcript", type=["srt", "vtt"])
    if transcript_file is not None:
        transcript_name = transcript_file.name
    else:
        transcript_name = None
    if video_file is not None and transcript_file is not None:
        if transcript_name[-3:] == "vtt":
            with open(f"{save_dir}/transcript.vtt", "wb") as f:
                f.writelines(transcript_file)
                f.close()
            with open(os.path.join(os.getcwd(), f"{save_dir}/transcript.vtt"), "rb") as f:
                vtt_file = f.read()
            if st.button("Generate Video with Subtitles"):
                generate_subtitled_video(video_file)
                video_file = ffmpeg.input(f"{save_dir}/input.mp4")
                audio_file = ffmpeg.input(f"{save_dir}/output.wav")
                ffmpeg.concat(video_file.filter("subtitles", vtt_file), audio_file, v=1, a=1).output("final.mp4").global_args('-report').run(quiet=True, overwrite_output=True)
                video_with_subs = open("final.mp4", "rb")
                col3, col4 = st.columns([3, 1])
                with col3:
                    st.video(video_with_subs)
                with col4:
                    st.download_button(label="Download Video with Subtitles",
                                        data=video_with_subs,
                                        file_name=f"{filename}_with_subs.mp4")
            else:
                st.error("Please upload a video file and a transcript file.")
        elif transcript_name[-3:] == "srt":
            with open(f"{save_dir}/transcript.srt", "wb") as f:
                f.writelines(transcript_file)
                f.close()
            with open(os.path.join(os.getcwd(), f"{save_dir}/transcript.srt"), "rb") as f:
                srt_file = f.read()
                f.close()
            if st.button("Generate Video with Subtitles"):
                generate_subtitled_video(video_file)
                video_file = ffmpeg.input(f"{save_dir}/input.mp4")
                audio_file = ffmpeg.input(f"{save_dir}/output.wav")
                ffmpeg.concat(video_file.filter("subtitles", f'{save_dir}/transcript.srt'), audio_file, v=1, a=1).output("final.mp4").global_args('-report').run(quiet=True, overwrite_output=True)
                video_with_subs = open("final.mp4", "rb")

                col3, col4 = st.columns([3, 1])
                with col3:
                    st.video(video_with_subs)
                with col4:
                    st.download_button(label="Download Video with Subtitles",
                                        data=video_with_subs,
                                        file_name=f"{filename}_with_subs.mp4")
        else:
            st.error("Please upload a .srt or .vtt file")
    else:
        st.info("Please upload a video file and a transcript file")


if __name__ == "__main__":
    authenticate.set_st_state_vars()
    if st.session_state["authenticated"]:
        main()
        authenticate.button_logout()
    else:
        st.info("Please log in or sign up to use the app.")
        authenticate.button_login()
        



  


  I couldn't figure out what I'm doing wrong. Please help

  


  And the log file of ffmpeg error :

  


  ffmpeg started on 2022-11-03 at 21:29:27
Report written to "ffmpeg-20221103-212927.log"
Log level: 48
Command line:
ffmpeg -i "C:\\Users\\batuh\\Auto-Subtitled-Video-Generator - Copy2\\pages\\local_transcript\\output/input.mp4" -i "C:\\Users\\batuh\\Auto-Subtitled-Video-Generator - Copy2\\pages\\local_transcript\\output/output.wav" -filter_complex "[0]subtitles=C\\\\\\\\\\\\:\\\\\\\\\\\\\\\\Users\\\\\\\\\\\\\\\\batuh\\\\\\\\\\\\\\\\Auto-Subtitled-Video-Generator - Copy2\\\\\\\\\\\\\\\\pages\\\\\\\\\\\\\\\\local_transcript\\\\\\\\\\\\\\\\output/transcript.srt[s0];[s0][1]concat=a=1:n=1:v=1[s1]" -map "[s1]" final.mp4 -report -y
ffmpeg version 2022-10-24-git-d79c240196-full_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-libsnappy --enable-zlib --enable-librist --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca --enable-sdl2 --enable-libaribb24 --enable-libdav1d --enable-libdavs2 --enable-libuavs3d --enable-libzvbi --enable-librav1e --enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs2 --enable-libxvid --enable-libaom --enable-libjxl --enable-libopenjpeg --enable-libvpx --enable-mediafoundation --enable-libass --enable-frei0r --enable-libfreetype --enable-libfribidi --enable-liblensfun --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf --enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libvpl --enable-libshaderc --enable-vulkan --ena  libavutil      57. 39.101 / 57. 39.101
  libavcodec     59. 51.100 / 59. 51.100
  libavformat    59. 34.101 / 59. 34.101
  libavdevice    59.  8.101 / 59.  8.101
  libavfilter     8. 49.101 /  8. 49.101
  libswscale      6.  8.112 /  6.  8.112
  libswresample   4.  9.100 /  4.  9.100
  libpostproc    56.  7.100 / 56.  7.100
Splitting the commandline.
Reading option '-i' ... matched as input url with argument 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/input.mp4'.
Reading option '-i' ... matched as input url with argument 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/output.wav'.
Reading option '-filter_complex' ... matched as option 'filter_complex' (create a complex filtergraph) with argument '[0]subtitles=C\\\\\\:\\\\\\\\Users\\\\\\\\batuh\\\\\\\\Auto-Subtitled-Video-Generator - Copy2\\\\\\\\pages\\\\\\\\local_transcript\\\\\\\\output/transcript.srt[s0];[s0][1]concat=a=1:n=1:v=1[s1]'.
Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '[s1]'.
Reading option 'final.mp4' ... matched as output url.
Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option filter_complex (create a complex filtergraph) with argument [0]subtitles=C\\\\\\:\\\\\\\\Users\\\\\\\\batuh\\\\\\\\Auto-Subtitled-Video-Generator - Copy2\\\\\\\\pages\\\\\\\\local_transcript\\\\\\\\output/transcript.srt[s0];[s0][1]concat=a=1:n=1:v=1[s1].
Applying option report (generate a report) with argument 1.
Applying option y (overwrite output files) with argument 1.
Successfully parsed a group of options.
Parsing a group of options: input url C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/input.mp4.
Successfully parsed a group of options.
Opening an input file: C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/input.mp4.
[NULL @ 000001baaeb55300] Opening 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/input.mp4' for reading
[file @ 000001baaeb55800] Setting default whitelist 'file,crypto,data'
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Format mov,mp4,m4a,3gp,3g2,mj2 probed with size=2048 and score=100
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] ISO: File Type Major Brand: mp42
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Processing st: 0, edit list 0 - media time: 3003, duration: 8201160
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Offset DTS by 3003 to make first pts zero.
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Setting codecpar->delay to 1 for stream st: 0
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Unknown dref type 0x206c7275 size 12
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] Before avformat_find_stream_info() pos: 34044 bytes read:65536 seeks:0 nb_streams:2
[h264 @ 000001baaeb68bc0] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000001baaeb68bc0] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000001baaeb68bc0] nal_unit_type: 7(SPS), nal_ref_idc: 3
[h264 @ 000001baaeb68bc0] nal_unit_type: 8(PPS), nal_ref_idc: 3
[h264 @ 000001baaeb68bc0] nal_unit_type: 5(IDR), nal_ref_idc: 3
[h264 @ 000001baaeb68bc0] Format yuv420p chosen by get_format().
[h264 @ 000001baaeb68bc0] Reinit context to 1280x720, pix_fmt: yuv420p
[h264 @ 000001baaeb68bc0] no picture 
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] All info found
[mov,mp4,m4a,3gp,3g2,mj2 @ 000001baaeb55300] After avformat_find_stream_info() pos: 109849 bytes read:131072 seeks:0 frames:15
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/input.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2016-08-24T03:50:36.000000Z
  Duration: 00:01:31.14, start: 0.000000, bitrate: 1149 kb/s
  Stream #0:0[0x1](und), 14, 1/90000: Video: h264 (Main) (avc1 / 0x31637661), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 1020 kb/s, 29.97 fps, 29.97 tbr, 90k tbn (default)
    Metadata:
      creation_time   : 2016-08-24T03:50:36.000000Z
      handler_name    : ISO Media file produced by Google Inc.
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und), 1, 1/44100: Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    Metadata:
      creation_time   : 2016-08-24T03:50:36.000000Z
      handler_name    : ISO Media file produced by Google Inc.
      vendor_id       : [0][0][0][0]
Successfully opened the file.
Parsing a group of options: input url C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/output.wav.
Successfully parsed a group of options.
Opening an input file: C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/output.wav.
[NULL @ 000001baaec0e8c0] Opening 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/output.wav' for reading
[file @ 000001baaf24ee40] Setting default whitelist 'file,crypto,data'
[wav @ 000001baaec0e8c0] Format wav probed with size=2048 and score=99
[wav @ 000001baaec0e8c0] Before avformat_find_stream_info() pos: 78 bytes read:65614 seeks:1 nb_streams:1
[wav @ 000001baaec0e8c0] probing stream 0 pp:32
[wav @ 000001baaec0e8c0] probing stream 0 pp:31
[wav @ 000001baaec0e8c0] probing stream 0 pp:30
[wav @ 000001baaec0e8c0] probing stream 0 pp:29
[wav @ 000001baaec0e8c0] probing stream 0 pp:28
[wav @ 000001baaec0e8c0] probing stream 0 pp:27
[wav @ 000001baaec0e8c0] probing stream 0 pp:26
[wav @ 000001baaec0e8c0] probing stream 0 pp:25
[wav @ 000001baaec0e8c0] probing stream 0 pp:24
[wav @ 000001baaec0e8c0] probing stream 0 pp:23
[wav @ 000001baaec0e8c0] probing stream 0 pp:22
[wav @ 000001baaec0e8c0] probing stream 0 pp:21
[wav @ 000001baaec0e8c0] probing stream 0 pp:20
[wav @ 000001baaec0e8c0] probing stream 0 pp:19
[wav @ 000001baaec0e8c0] probing stream 0 pp:18
[wav @ 000001baaec0e8c0] probing stream 0 pp:17
[wav @ 000001baaec0e8c0] probing stream 0 pp:16
[wav @ 000001baaec0e8c0] probing stream 0 pp:15
[wav @ 000001baaec0e8c0] probing stream 0 pp:14
[wav @ 000001baaec0e8c0] probing stream 0 pp:13
[wav @ 000001baaec0e8c0] probing stream 0 pp:12
[wav @ 000001baaec0e8c0] probing stream 0 pp:11
[wav @ 000001baaec0e8c0] probing stream 0 pp:10
[wav @ 000001baaec0e8c0] probing stream 0 pp:9
[wav @ 000001baaec0e8c0] probing stream 0 pp:8
[wav @ 000001baaec0e8c0] probing stream 0 pp:7
[wav @ 000001baaec0e8c0] probing stream 0 pp:6
[wav @ 000001baaec0e8c0] probing stream 0 pp:5
[wav @ 000001baaec0e8c0] probing stream 0 pp:4
[wav @ 000001baaec0e8c0] probing stream 0 pp:3
[wav @ 000001baaec0e8c0] probing stream 0 pp:2
[wav @ 000001baaec0e8c0] probing stream 0 pp:1
[wav @ 000001baaec0e8c0] probed stream 0
[wav @ 000001baaec0e8c0] parser not found for codec pcm_s16le, packets or times may be invalid.
[wav @ 000001baaec0e8c0] max_analyze_duration 5000000 reached at 5120000 microseconds st:0
[wav @ 000001baaec0e8c0] After avformat_find_stream_info() pos: 176206 bytes read:262222 seeks:1 frames:42
Guessed Channel Layout for Input Stream #1.0 : mono
Input #1, wav, from 'C:\Users\batuh\Auto-Subtitled-Video-Generator - Copy2\pages\local_transcript\output/output.wav':
  Metadata:
    encoder         : Lavf59.34.101
  Duration: 00:01:31.14, bitrate: 256 kb/s
  Stream #1:0, 42, 1/16000: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 16000 Hz, 1 channels, s16, 256 kb/s
Successfully opened the file.
[Parsed_subtitles_0 @ 000001baaeb7d040] Setting 'filename' to value 'C\:\\Users\\batuh\\Auto-Subtitled-Video-Generator - Copy2\\pages\\local_transcript\\output/transcript.srt'
[Parsed_subtitles_0 @ 000001baaeb7d040] libass API version: 0x1600010
[Parsed_subtitles_0 @ 000001baaeb7d040] libass source: commit: 0.16.0-48-g75a3dbac9bd41842a4d00b0d42c9513e2c8aec67
[Parsed_subtitles_0 @ 000001baaeb7d040] Raster: FreeType 2.12.1
[Parsed_subtitles_0 @ 000001baaeb7d040] Shaper: FriBidi 1.0.12 (SIMPLE) HarfBuzz-ng 5.3.1 (COMPLEX)
[Parsed_subtitles_0 @ 000001baaeb7d040] Initialized
[NULL @ 000001baaf473400] Opening 'C\:\\Users\\batuh\\Auto-Subtitled-Video-Generator - Copy2\\pages\\local_transcript\\output/transcript.srt' for reading
[file @ 000001baaeb7dc40] Setting default whitelist 'file,crypto,data'
[Parsed_subtitles_0 @ 000001baaeb7d040] Unable to open C\:\\Users\\batuh\\Auto-Subtitled-Video-Generator - Copy2\\pages\\local_transcript\\output/transcript.srt
[AVFilterGraph @ 000001baaf24ef40] Error initializing filter 'subtitles' with args 'C\\\:\\\\Users\\\\batuh\\\\Auto-Subtitled-Video-Generator - Copy2\\\\pages\\\\local_transcript\\\\output/transcript.srt'
Error initializing complex filters.
Invalid argument
[AVIOContext @ 000001baaeb5f880] Statistics: 131072 bytes read, 0 seeks
[AVIOContext @ 000001baaf10b2c0] Statistics: 262222 bytes read, 1 seeks



  


  I tried doing all ffmpeg related things under the generate_subtitled_video function but couldn't make it work either.