我正在编写mp4到HLS转码过程，该过程可按预期在小于7 GB（文件大小为100个视频）的文件上工作。尝试对大于7GB的内容进行转码时，它会崩溃。
命令：
ffmpeg
-i large_file.mp4 -y
-vf scale=w=1920:h=1080:force_original_aspect_ratio=decrease
-c:a aac
-ar 48000
-c:v h264
-profile:v main
-crf 20
-sc_threshold 0
-g 48
-keyint_min 48
-hls_time 4
-hls_playlist_type vod
-b:v 5000k
-maxrate 5350k
-bufsize 7500k
-b:a 192k
-hls_segment_filename /1080p_%03d.ts
-threads 0
/tmp/output-ef42dc65-1d3d-4682-b32b-68d7c712fb9c-raw-test/1080p.m3u8
错误：
ffmpeg version 3.2.12-1\x7edeb9u1 Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --prefix=/usr --extra-version='1~deb9u1' --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-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --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-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
libavutil 55. 34.101 / 55. 34.101
libavcodec 57. 64.101 / 57. 64.101
libavformat 57. 56.101 / 57. 56.101
libavdevice 57. 1.100 / 57. 1.100
libavfilter 6. 65.100 / 6. 65.100
libavresample 3. 1. 0 / 3. 1. 0
libswscale 4. 2.100 / 4. 2.100
libswresample 2. 3.100 / 2. 3.100
libpostproc 54. 1.100 / 54. 1.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x555888d821c0] Could not find codec parameters for stream 0 (Video: h264 (avc1 / 0x31637661), none, 1280x720, 3856 kb/s): unspecified pixel format
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'large_file.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf58.26.101
Duration: 05:56:12.51, start: 0.000000, bitrate: 4061 kb/s
Stream #0:0(und): Video: h264 (avc1 / 0x31637661), none, 1280x720, 3856 kb/s, 29.99 fps, 30 tbr, 100k tbn, 200k tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 194 kb/s (default)
Metadata:
handler_name : SoundHandler
[buffer @ 0x555888d88180] Unable to parse option value "-1" as pixel format
Last message repeated 1 times
[buffer @ 0x555888d88180] Error setting option pix_fmt to value -1.
[graph 0 input from stream 0:0 @ 0x555888d81e40] Error applying options to the filter.
Error opening filters!
该错误表明尝试增加analyzeduration和probesize，我将它们设置为最大值（基于this帖子的答案），但是似乎并没有改变行为。我还怀疑该文件已损坏，但是对于所有大于7GB的文件来说，这都是失败的事实，这使得很难暗示它与mp4的大小无关。
答案 0 :(得分：0)
事实证明comment by Gyan是正确的。我们正在使用docker进行部署（代码转换器是使用fluent-ffmpeg的node.js），因此升级并不像您想的那么简单，因为我们需要在同一映像中进行多个构建（又称为多阶段构建）
我们遇到的问题：
error while
loading shared libraries: libssl.so.1.0.0: cannot open shared object
file: No such file or director。尽管有issue个开放
没有提供解决方案，我也无法自行找到解决方案。 opt/ffmpeg/bin中，而不是我们期望的位置
就是/usr/local/bin。鉴于此，这就是我们的Dockerfile的样子。工人正在大声疾呼。
FROM alfg/ffmpeg AS ffmpeg # stored at /opt/ffmpeg/bin/ffmpeg
FROM node:10.10.0-alpine AS build
RUN npm install --global yarn@1.10.1
WORKDIR /app
# need these for native libraries like bcrypt
RUN apk update && apk add python g++ make && rm -rf /var/cache/apk/*
COPY . ./
RUN yarn install --pure-lockfile
FROM node:10.10.0-alpine
COPY --from=build /usr/lib/libgcc* /usr/lib/libstdc* /usr/lib/
COPY --from=ffmpeg / /
COPY --from=build /app /
# add ffmpeg's location to path
ENV PATH="/opt/ffmpeg/bin/:${PATH}"
CMD [ "yarn", "start" ]