我在 CentOS 8.4 上使用 ffmpeg 处理 RTMP/RTMPS 协议时遇到了困难。它在 CentOS 7 和 Debian 上运行良好，只是最新版本的 CentOS 出现了问题。我做错了什么吗？
静态构建
ffmpeg 的静态版本（主版本和稳定版本）在输入或输出中引用 rtmp 时会产生分段错误。我已在 Vultr 和 VirtualBox 中的新 VM 上使用最新的 CentOS 8 映像对此进行了测试。我曾尝试在 ffmpeg 错误跟踪器上报告此问题，但显然这不是正确的地方：https://trac.ffmpeg.org/ticket/9309
简单运行ffmpeg -i rtmp://localhost:1935/live/app就会立即产生段错误。
从源代码编译
更新：RTMP 可以从这个编译版本运行，但是 RTMPS 出现“未找到协议”错误。
我尝试按照以下方法进行编译官方指南./configure “Enabled protocol”的结果中列出了“rtmp, rtmps”协议：
Enabled protocols:
async data ftp http md5 prompeg rtmpt srtp tls
cache ffrtmpcrypt gopher httpproxy mmsh rtmp rtmpte subfile udp
concat ffrtmphttp gophers https mmst rtmpe rtmpts tcp udplite
crypto file hls icecast pipe rtmps rtp tee unix
但是将流发布到 rtmps 地址的结果是“未找到协议”：
ffmpeg -i rtmp://localhost:19350/nginxrtmptest/nginxrtmptest -acodec copy -vcodec copy -tune zerolatency -f flv rtmps://live-api-s.facebook.com:443/rtmp/**REDACTED**
ffmpeg version N-102809-gde8e6e67e7 Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 8 (GCC)
configuration: --prefix=/root/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/root/ffmpeg_build/include --extra-ldflags=-L/root/ffmpeg_build/lib --extra-libs=-lpthread --extra-libs=-lm --bindir=/root/bin --enable-gpl --enable-libfdk_aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
libavutil 57. 0.100 / 57. 0.100
libavcodec 59. 3.100 / 59. 3.100
libavformat 59. 3.101 / 59. 3.101
libavdevice 59. 0.100 / 59. 0.100
libavfilter 8. 0.103 / 8. 0.103
libswscale 6. 0.100 / 6. 0.100
libswresample 4. 0.100 / 4. 0.100
libpostproc 56. 0.100 / 56. 0.100
[h264 @ 0x332ed80] co located POCs unavailable
Last message repeated 1 times
Input #0, flv, from 'rtmp://localhost:19350/nginxrtmptest/nginxrtmptest':
Metadata:
|RtmpSampleAccess: true
Server : NGINX RTMP (github.com/sergey-dryabzhinsky/nginx-rtmp-module)
displayWidth : 1280
displayHeight : 720
fps : 30
videokeyframe_frequency: 0
profile :
level :
Duration: 00:00:00.00, start: 9.145000, bitrate: N/A
Stream #0:0: Audio: aac (LC), 48000 Hz, stereo, fltp, 98 kb/s
Stream #0:1: Video: h264 (Constrained Baseline), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 1280 kb/s, 30 fps, 30 tbr, 1k tbn
rtmps://live-api-s.facebook.com:443/rtmp/**REDACTED**r: Protocol not found
构建脚本
我尝试过构建脚本https://github.com/markus-perl/ffmpeg-build-script然而，它在配置 libsdl 时失败，抱怨缺少 Xext.h (libxext-dev)，尽管使用时找不到该包yum install libxext-dev
building libsdl
=======================
SDL2-2.0.14.tar.gz has already downloaded.
Extracted SDL2-2.0.14.tar.gz
$ ./configure --prefix=/root/ffmpeg-build-script/workspace --disable-shared --enable-static
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking how to print strings... printf
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checking whether the C compiler works... yes
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checking how to hardcode library paths into programs... immediate
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*** your path, or set the ESD_CONFIG environment variable to the
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configure: error:
*** Missing Xext.h, maybe you need to install the libxext-dev package?
Failed to Execute ./configure --prefix=/root/ffmpeg-build-script/workspace --disable-shared --enable-static