Given concat demuxer input file concat.txt with contents:
Given video before.mp4 containing video and audio streams both with start_time=0 and start_pts=0. This causes the processed video, when opened with QuickTime player on Mac, to initially display a blank frame, although the rest of the video plays normally.įfmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developersīuilt with Apple clang version 11.0.3 (clang-1103.0.32.62)Ĭonfiguration: -prefix=/usr/local/Cellar/ffmpeg/4.3.1 -enable-shared -enable-pthreads -enable-version3 -enable-avresample -cc=clang -host-cflags= -host-ldflags= -enable-ffplay -enable-gnutls -enable-gpl -enable-libaom -enable-libbluray -enable-libdav1d -enable-libmp3lame -enable-libopus -enable-librav1e -enable-librubberband -enable-libsnappy -enable-libsrt -enable-libtesseract -enable-libtheora -enable-libvidstab -enable-libvorbis -enable-libvpx -enable-libwebp -enable-libx264 -enable-libx265 -enable-libxml2 -enable-libxvid -enable-lzma -enable-libfontconfig -enable-libfreetype -enable-frei0r -enable-libass -enable-libopencore-amrnb -enable-libopencore-amrwb -enable-libopenjpeg -enable-librtmp -enable-libspeex -enable-libsoxr -enable-videotoolbox -disable-libjack -disable-indev=jackįfprobe version 4.3.1 Copyright (c) 2007-2020 the FFmpeg developers
After a single mp4 video containing video and audio streams both with start_time=0 and start_pts=0 is processed by concat demuxer with -c copy option, video stream start_time and start_pts are no longer zero.
0 kommentar(er)
