[FFmpeg-user] Issue affecting ffmpeg and youtube-dl

[JD]

Noted.

>While there, please find out what top-posting means and avoid it here.

Here is the output:

Y:\youtube-dl>ffmpeg -y -loglevel "repeat+info" -i "file:deltron -
Videos\LIGHTSKINJOHN - only - MakTbhIZ5zo.f302.webm" -i "file:deltron -
Videos\LIGHTSKINJOHN - only - MakTbhIZ5zo.f251.webm" -c copy -map "0:v:0"
-map "1:a:0" "file:deltron - Videos\LIGHTSKINJOHN - only -
MakTbhIZ5zo.temp.webm"
ffmpeg version 2021-02-16-git-8331eb058d-full_build-www.gyan.dev Copyright
(c) 2000-2021 the FFmpeg developers
  built with gcc 10.2.0 (Rev6, 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-lzma
--enable-libsnappy --enable-zlib --enable-libsrt --enable-libssh
--enable-libzmq --enable-avisynth --enable-libbluray --enable-libcaca
--enable-sdl2 --enable-libdav1d --enable-libzvbi --enable-librav1e
--enable-libsvtav1 --enable-libwebp --enable-libx264 --enable-libx265
--enable-libxvid --enable-libaom --enable-libopenjpeg --enable-libvpx
--enable-libass --enable-frei0r --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-libglslang --enable-vulkan --enable-opencl --enable-libcdio
--enable-libgme --enable-libmodplug --enable-libopenmpt
--enable-libopencore-amrwb --enable-libmp3lame --enable-libshine
--enable-libtheora --enable-libtwolame --enable-libvo-amrwbenc
--enable-libilbc --enable-libgsm --enable-libopencore-amrnb
--enable-libopus --enable-libspeex --enable-libvorbis --enable-ladspa
--enable-libbs2b --enable-libflite --enable-libmysofa
--enable-librubberband --enable-libsoxr --enable-chromaprint
  libavutil      56. 65.100 / 56. 65.100
  libavcodec     58.123.100 / 58.123.100
  libavformat    58. 67.100 / 58. 67.100
  libavdevice    58. 12.100 / 58. 12.100
  libavfilter     7.107.100 /  7.107.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100
Input #0, matroska,webm, from 'file:deltron - Videos\LIGHTSKINJOHN - only -
MakTbhIZ5zo.f302.webm':
  Metadata:
    encoder         : google/video-file
    http://youtube.com/streaming/otf/durations/112015: Segment-Count: 17
                    : Segment-Durations-Ms:
5339,5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),901,
                    :
                    :
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv,
bt709/unknown/unknown), 1280x720, SAR 1:1 DAR 16:9, 59.94 fps, 59.94 tbr,
1k tbn, 1k tbc (default)
Input #1, matroska,webm, from 'file:deltron - Videos\LIGHTSKINJOHN - only -
MakTbhIZ5zo.f251.webm':
  Metadata:
    encoder         : google/video-file
  Duration: 00:01:26.40, start: -0.007000, bitrate: 141 kb/s
  Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
Output #0, webm, to 'file:deltron - Videos\LIGHTSKINJOHN - only -
MakTbhIZ5zo.temp.webm':
  Metadata:
    http://youtube.com/streaming/otf/durations/112015: Segment-Count: 17
                    : Segment-Durations-Ms:
5339,5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),5338,5339(r=1),901,
                    :
                    :
    encoder         : Lavf58.67.100
  Stream #0:0(eng): Video: vp9 (Profile 0), yuv420p(tv,
bt709/unknown/unknown), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 59.94 fps,
59.94 tbr, 1k tbn, 1k tbc (default)
  Stream #0:1(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #1:0 -> #0:1 (copy)
Press [q] to stop, [?] for help
[webm @ 000002372e6c47c0] Application provided invalid, non monotonically
increasing dts to muxer in stream 0: 5355 >= 5339
av_interleaved_write_frame(): Invalid argument
frame=  323 fps=0.0 q=-1.0 Lsize=     906kB time=00:00:05.36
bitrate=1384.3kbits/s speed=61.2x
video:825kB audio:89kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
Conversion failed!

Y:\youtube-dl>