ffmpeg - 如果标准输入流有错误,如何让 ffmpeg 失败?
问题描述
我有一些代码通过管道将rawvideo输出到ffmpeg,然后在它上面覆盖一个png。如果代码因错误退出,ffmpeg 会一直运行,我不知道如何停止它:( 有什么想法吗?这是一个例子:
set -o pipefail
(echo "error!!"; exit 1) | \
ffmpeg -f rawvideo -c:v rawvideo -s 1280x720 -pix_fmt bgra -i - \
-i my_icon.png \
-filter_complex "[0][1]overlay=50:50" \
out.mp4
注意 ffmpeg 确实显示了一条错误消息,但仍然没有停止,永远停留在“第 0 帧”中,带有一个奇怪的时间属性,例如time:-577014:32:22.77
:
[rawvideo @ 0x563fc94427c0] Packet too small (8)
Error while decoding stream #0:0: Invalid data found when processing input
Finishing stream 0:0 without any data written to it.:32:22.77 bitrate= -0.0kbits/s speed=N/A
frame= 0 fps=0.0 q=0.0 size= 0kB time=-577014:32:22.77 bitrate= -0.0kbits/s speed=N/A
评论中要求的ffmpeg版本信息:
ffmpeg version 3.4.2-2 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu2)
configuration: --prefix=/usr --extra-version=2 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 78.100 / 55. 78.100
libavcodec 57.107.100 / 57.107.100
libavformat 57. 83.100 / 57. 83.100
libavdevice 57. 10.100 / 57. 10.100
libavfilter 6.107.100 / 6.107.100
libavresample 3. 7. 0 / 3. 7. 0
libswscale 4. 8.100 / 4. 8.100
libswresample 2. 9.100 / 2. 9.100
libpostproc 54. 7.100 / 54. 7.100