[HELP] QT error in Fedora 43

[rolledjoel]

Could anyone provide any information on this error please? The input file is DV. It is vapoursyth error, QTGMC only.

[Selur]

··• ffmpeg -i /tmp/2025-12-05@06_36_53_2710_02.264 -c copy /dev/null
ffmpeg version 7.1.2 Copyright (c) 2000-2025 the FFmpeg developers
  built with gcc 15 (GCC)
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wall -Wno-complain-wrong-lang -Werror=format-security -Wp,-U_FORTIFY_SOURCE,-D_FORTIFY_SOURCE=3 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=x86-64 -mtune=generic -fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection -mtls-dialect=gnu2 -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer' --extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,-z,now -specs=/usr/lib/rpm/redhat/redhat-hardened-ld -specs=/usr/lib/rpm/redhat/redhat-hardened-ld-errors -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -Wl,--build-id=sha1 -specs=/usr/lib/rpm/redhat/redhat-package-notes ' --extra-cflags=' -I/usr/include/rav1e' --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3 --enable-bzlib --enable-chromaprint --enable-fontconfig --enable-frei0r --enable-gcrypt --enable-gnutls --enable-ladspa --enable-lcms2 --enable-libaom --enable-libaribb24 --enable-libaribcaption --enable-libdav1d --enable-libass --enable-libbluray --enable-libbs2b --enable-libcodec2 --enable-libcdio --enable-libdrm --enable-libjack --enable-libjxl --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libharfbuzz --enable-libilbc --enable-liblc3 --enable-libmp3lame --enable-libmysofa --enable-nvenc --enable-openal --enable-opencl --enable-opengl --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-libplacebo --enable-librsvg --enable-librav1e --enable-librubberband --enable-libqrencode --enable-libsmbclient --enable-version3 --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtesseract --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libv4l2 --enable-libvidstab --enable-libvmaf --enable-version3 --enable-vapoursynth --enable-libvpx --enable-libvvenc --enable-vulkan --enable-libshaderc --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-avfilter --enable-libmodplug --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-lto --enable-libvpl --enable-runtime-cpudetect
  libavutil      59. 39.100 / 59. 39.100
  libavcodec     61. 19.101 / 61. 19.101
  libavformat    61.  7.100 / 61.  7.100
  libavdevice    61.  3.100 / 61.  3.100
  libavfilter    10.  4.100 / 10.  4.100
  libswscale      8.  3.100 /  8.  3.100
  libswresample   5.  3.100 /  5.  3.100
  libpostproc    58.  3.100 / 58.  3.100
[h264 @ 0x5569fe584e80] Format h264 detected only with low score of 1, misdetection possible!
[h264 @ 0x5569fe584e80] Could not find codec parameters for stream 0 (Video: h264, none): unspecified size
Consider increasing the value for the 'analyzeduration' (0) and 'probesize' (5000000) options
Input #0, h264, from '/tmp/2025-12-05@06_36_53_2710_02.264':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: h264, none, 25 fps, 1200k tbr, 1200k tbn
[AVFormatContext @ 0x5569fe587480] Unable to choose an output format for '/dev/null'; use a standard extension for the filename or specify the format manually.
[out#0 @ 0x5569fe587f00] Error initializing the muxer for /dev/null: Invalid argument
Error opening output file /dev/null.
Error opening output files: Invalid argument

Vapoursynth isn't used there,...

[AVFormatContext @ 0x5569fe587480] Unable to choose an output format for '/dev/null'; use a standard extension for the filename or specify the format manually.
[out#0 @ 0x5569fe587f00] Error initializing the muxer for /dev/null: Invalid argument
Error opening output file /dev/null.
Error opening output files: Invalid argument

seems like an ffmpeg error, '-f null' should help
https://trac.ffmpeg.org/wiki/Null

[rolledjoel]

Thank you Selur. 

I installed the same distro onto another drive and your dev build worked out of the box. Nice work.

How do I go about adding ffmpeg commands into hybrid, can I do it inside hybrid itself?

[Selur]

I installed the same distro onto another drive and your dev build worked out of the box. Nice work.

Good to know. Thanks for testing.

How do I go about adding ffmpeg commands into hybrid?

You can't, why would you want to?

Cu Selur

[rolledjoel]

You're welcome.

Not sure, I thought this would be a good way to test. I'm quite slow writing stuff out when I'm not used to programs. I've used your GUI since I delved into video encoding and never needed to go into the code