How start FFmpeg using QProcess with bash example. Output
new QProcess state= QProcess::Starting
new QProcess state= QProcess::Running
new QProcess state= QProcess::NotRunning
QProcess should finish
QProcess finish ok;msg;libGL error: No matching fbConfigs or visuals found
libGL error: failed to load driver: swrast
X Error: GLXBadContext
Request Major code 152 (GLX)
Request Minor code 6 ()
Error Serial #63
Current Serial #62
ffmpeg version n4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
built with gcc 7 (Ubuntu 7.5.0-3ubuntu1~18.04)
configuration: --prefix= --prefix=/usr --disable-debug --disable-doc --disable-static --enable-cuda --enable-cuda-sdk --enable-cuvid --enable-libdrm --enable-ffplay --enable-gnutls --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfontconfig --enable-libfreetype --enable-libmp3lame --enable-libnpp --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopus --enable-libpulse --enable-sdl2 --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxcb --enable-libxvid --enable-nonfree --enable-nvenc --enable-omx --enable-openal --enable-opencl --enable-runtime-cpudetect --enable-shared --enable-vaapi --enable-vdpau --enable-version3 --enable-xlib
libavutil 56. 51.100 / 56. 51.100
libavcodec 58. 91.100 / 58. 91.100
libavformat 58. 45.100 / 58. 45.100
libavdevice 58. 10.100 / 58. 10.100
libavfilter 7. 85.100 / 7. 85.100
libswscale 5. 7.100 / 5. 7.100
libswresample 3. 7.100 / 3. 7.100
libpostproc 55. 7.100 / 55. 7.100
Input #0, lavfi, from 'testsrc=size=1280x720:rate=1:duration=10':
Duration: N/A, start: 0.000000, bitrate: N/A
Stream #0:0: Video: rawvideo (RGB[24] / 0x18424752), rgb24, 1280x720 [SAR 1:1 DAR 16:9], 1 fps, 1 tbr, 1 tbn, 1 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> mjpeg (native))
Press [q] to stop, [?] for help
[swscaler @ 0x6438de58b780] deprecated pixel format used, make sure you did set range correctly
Output #0, mjpeg, to 'input.yuvj422p':
Metadata:
encoder : Lavf58.45.100
Stream #0:0: Video: mjpeg, yuvj422p(pc), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1 fps, 1 tbn, 1 tbc
Metadata:
encoder : Lavc58.91.100 mjpeg
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: N/A
[Parsed_testsrc_0 @ 0x6438de576b80] EOF timestamp not reliable
frame= 10 fps=0.0 q=1.6 Lsize= 324kB time=00:00:10.00 bitrate= 265.0kbits/s speed= 173x
video:324kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%
If I change code to process->setArguments({"-c", "mistake here"}) then output
new QProcess state= QProcess::Starting
new QProcess state= QProcess::Running
new QProcess state= QProcess::NotRunning
QProcess should finish
QProcess finish with code;127;exitStatus;QProcess::NormalExit;msg;/usr/bin/bash: line 1: mistake: command not found