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> _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".