循环读取rabbit.mp4 并推送到rtsp服务器

ffmpeg -re -stream_loop -1 -i rabbit.mp4   -rtsp_transport tcp -vcodec copy -codec copy -f rtsp rtsp://192.168.0.209:554/live/qmcy

推到rtmp服务器

ffmpeg -re -i test14.mp4 -c copy -f flv rtmp://192.168.8.156:1935/live/qmcy1111

从MP4文件提取aac文件

ffmpeg -i rabbit.mp4 -vn -codec copy rabbit.m4a
ffmpeg -i rabbit.mp4 -vn -acodec aac rabbit.m4a
ffmpeg  -i rabbit.mp4 -vn -y -acodec copy rabbit.aac

从aac文件解码PCM文件

ffmpeg -i test.aac -f s16le test.pcm

列出电脑的设备名称 比如摄像头 后面ffplay通过这里的名称进行编码推流

fmpeg -list_devices true -f dshow -i dummy
ffplay -f dshow -i video="Integrated Webcam"  
ffplay -f vfwcap -i 0

ffmpeg -f dshow -i video="Integrated Webcam" -vcodec libx264 -preset:v ultrafast -tune:v zerolatency -f flv rtmp://192.168.35.113:1935/live/stream




ffmpeg -f dshow -i video="Integrated Webcam" -f dshow -i audio="麦克风 (2- USB2.0 MIC)" -vcodec libx264 -preset:v ultrafast -tune:v zerolatency -f flv rtmp://127.0.0.1:1935/live/123

或者

ffmpeg -f dshow -i video="USB2.0 PC CAMERA":audio="麦克风 (2- USB2.0 MIC)" -vcodec libx264  -r 25  -preset:v ultrafast -tune:v zerolatency -f flv rtmp://127.0.0.1:1935/live/123

//屏幕
ffmpeg -f gdigrab -i desktop -vcodec libx264 -preset:v ultrafast -tune:v zerolatency -f flv rtmp://eguid.cc:1935/rtmp/destop

ffmpeg   -f dshow -i video="Integrated Webcam"  -vcodec h264 -acodec aac -strict -2   -f rtsp -rtsp_transport tcp  rtsp://192.168.0.208/live/test1

重新编码推流

ffmpeg -i input.mp4 -vf scale=1080:1920 output.mp4

ffmpeg -i middle.mp4 -c:v libx264 -movflags faststart -b 600k -r 25 -s 640*360 -ab 48k -strict -2 test_C4.mp4

重新编码时候的码率

ffmpeg -rtsp_transport tcp -r 25 -i rtsp://uer:gd123456@192.168.2.121:554/Streaming/Channels/101 -an -vcodec libx264 -g 30 -crf 30 -strict -2 -s 600*400 -preset faster -profile:v main -x264-params bitrate=300 -sc_threshold 1000000000 -f flv rtmp://192.168.35.75:1987/live/qmcy1111

保存为MP4文件

ffmpeg -rtsp_transport tcp -i rtsp://admin:thinker13@192.168.0.240:554/streaming/channels/701 -acodec copy -vcodec  copy  video_test.mp4

ffplay篇：

ffplay播放pcm文件

-i  文件名
-f  使用格式
-ar 采样率
-ac 通道数

ffplay -ar 44100 -ac 2 -f s16le -i test.pcm

以tcp方式播放rtsp流

ffplay -i -rtsp_transport tcp rtsp://192.168.0.209:554/live/qmcy

rtsp://uer:gd123456@192.168.2.136:554/Streaming/Channels/101   //H265

ffmpeg 合并文件

MP4文件不支持pcm_mulaw编码必须把音频编码转为aac

ffmpeg -f concat -safe 0 -i contact.txt -c:v copy -c:a aac output1.mp4

或者保存为mkv格式

ffmpeg -f concat -safe 0 -i contact.txt -c copy output1.mkv

contact.txt格式内容为：

file '10-54-03-0.mp4'
file '10-54-06-1.mp4'
file '10-54-10-2.mp4'

ffmpeg静态编译程序 这样不用依赖于各种so库 

John Van Sickle - FFmpeg Static Builds

ffmpeg png 转bmp

ffmpeg -i test.png test.bmp

ffmpeg截图：

ffmpeg -i 2023-06-29/10-54-10-2.mp4 -ss 1 -vframes 1 2023-06-29/822697379.jpg

视频不转码 音频转码

ffmpeg -i output1.mkv -vcodec copy -c:a aac -strict experimental output.m4a

aac转711

ffmpeg -i rabbit.AAC -c:a pcm_alaw -f alaw -ac 1 -ar 8000 rabbit.pcma

转音频推送rtmp

ffmpeg -re -stream_loop -1 -i rabbit.mp4   -rtsp_transport tcp -vcodec copy -acodec pcm_alaw -ac 1 -ar 44100 -f rtsp rtsp://192.168.131.130:554/live/qmcy

Rtsp转音频 推送rtsp

./ffqmcy  -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a pcm_alaw -ac 1 -ar 8000 -vcodec copy -f rtsp rtsp://192.168.131.132:554/live/qmcy

/ffqmcy  -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a pcm_alaw -ac 1 -ar 8000 -vcodec copy -f rtsp rtsp://192.168.131.132:554/live/qmcy

./ffqmcy  -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a aac -vcodec copy -f flv rtmp://192.168.131.132:1935/qmcy/0000

./ffqmcy -re -stream_loop -1  -i ../hengshan.mp4 -c:a aac -vcodec libx264 -keyint_min 50 -g 30 -crf 30 -strict -2 -s 704*576 -preset faster -profile:v main -x264-params bitrate=4000 -sc_threshold 1000000000 -flags -global_header -f rtsp rtsp://192.168.131.132:554/live/qmcy

./ffqmcy -re -stream_loop -1  -i ../hengshan.mp4 -c:a aac -vcodec libx264 -g 30 -crf 30 -strict -2 -s 704*576 -preset faster -profile:v main -x264-params bitrate=4000 -sc_threshold 1000000000 -f rtsp rtsp://192.168.131.132:554/live/qmcy

./ffqmcy   -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a aac -vcodec libx264 -g 25 -crf 30 -strict -2 -s 768*546 -preset faster -profile:v main -x264-params bitrate=1024 -sc_threshold 1000000000 -f flv rtmp://192.168.131.141:1935/qmcy/0000?sign=sdndudh21dje

./ffqmcy  -acodec aac -ar 8000 -ac 1  -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a aac -vcodec libx264 -g 1 -crf 30 -strict -2 -s 768*546 -preset faster -profile:v main -x264-params bitrate=1024 -sc_threshold 1000000000 -f flv rtmp://192.168.131.141:1935/qmcy/0000?sign=sdndudh21dje

./ffmpeg  -rtsp_transport tcp -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a aac -vcodec libx264 -g 1 -crf 30 -strict -2 -s 768*546 -preset faster -profile:v main -x264-params bitrate=1024 -sc_threshold 1000000000 -f flv rtmp://192.168.131.141:1935/qmcy/0000?sign=sdndudh21dje

./ffmpeg -rtsp_transport tcp  -i rtsp://admin:operation13@192.168.149.252/34020000001320000001 -c:a aac -vcodec libx264 -g 30 -crf 30 -strict -2 -s 1280*720 -preset faster -profile:v main -x264-params bitrate=300 -sc_threshold 1000000000 -f flv rtmp://192.168.131.141:1935/live/qmcy1111

./ffqmcy -re -stream_loop -1 -i ../hengshan.mp4   -rtsp_transport tcp -vcodec copy -acodec pcm_alaw -ac 1 -ar 44100 -f rtsp rtsp://192.168.131.132:554/live/qmcy

ffmpeg -i input.g711 -c:a aac -b:a 64k output.aac
./ffqmcy -rtsp_transport tcp -i rtsp://172.50.8.45:50554/gdlive/32080000001318310079 -acodec copy -vcodec  copy  video0.mkv

valgrind 检查内存泄漏
valgrind --leak-check=full --show-leak-kinds=all ./QMCYRTSP

export LD_LIBRARY_PATH=./3rd/ffmpeg/et44/lib/so:$LD_LIBRARY_PATH

scp ffqmcy root@172.50.8.53:/home/QMCY

ubuntu设置时区

timedatectl set-timezone Asia/Shanghai

gdb 忽略SIGPIPE信号

handle SIGPIPE nostop noprint nopass 或 handle SIGPIPE nostop noprint pass