问题
i run this command to be able to stream a udp live stream to a http live stream that is playable using a mobile application that am building. its just a stream with audio streams only.
ffmpeg -i udp://@localhost:1111 -map 0:a http://localhost:8090/feed1.ffm
Input #0, mpegts, from 'udp://@localhost:1111':
Duration: N/A, start: 54616.264622, bitrate: 768 kb/s
Program 1
Metadata:
service_name : Service 1
service_provider: TLK
Stream #0:0[0x101]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 2
Metadata:
service_name : Service 2
service_provider: TLK
Stream #0:1[0x111]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 3
Metadata:
service_name : Service 3
service_provider: TLK
Stream #0:2[0x121]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 4
Metadata:
service_name : Service 4
service_provider: TLK
Stream #0:3[0x131]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 5
Metadata:
service_name : Service 5
service_provider: TLK
Stream #0:4[0x141]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 6
Metadata:
service_name : Service 6
service_provider: TLK
Stream #0:5[0x151]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 7
Metadata:
service_name : Service 7
service_provider: TLK
Stream #0:6[0x161]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 8
Metadata:
service_name : Service 1
service_provider: TLK
Stream #0:7[0x171]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
i get this output
Stream mapping:
Stream #0:0 -> #0:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #0:1 (mp2 (native) -> mp2 (native))
Press [q] to stop, [?] for help
size= 100kB time=00:00:07.19 bitrate= 113.8kbits/s speed=3.01x
video:0kB audio:84kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 18.358242%
i really want a way i can be able to map every input stream to have an output stream that can be accessed separately from the other like maybe if i need the first stream maybe i will just
ffplay http://localhost:8090/feed1.ffm
and if i need the 7th stream i will just
ffplay http://localhost:8090/feed7.ffm
Please can someone help me crack this issue. FFmpeg dont have complex examples for my current situation.
this is my header information
ubuntu@ip-localhost:~$ \
ffmpeg -i udp://@localhost:4000 \
-map 0:a:0 http://localhost:8090/feed1.ffm
-map 0:a:1 http://localhost:8090/feed2.ffm
-map 0:a:2 http://localhost:8090/feed3.ffm
-map 0:a:3 http://localhost:8090/feed4.ffm
-map 0:a:4 http://localhost:8090/feed5.ffm
-map 0:a:5 http://localhost:8090/feed6.ffm
-map 0:a:6 http://localhost:8090/feed7.ffm
-map 0:a:7 http://localhost:8090/feed8.ffm
ffmpeg version 3.2.4-1~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 5.4.1 (Ubuntu 5.4.1-5ubuntu2~16.04.york1) 20170210 configuration: --prefix=/usr --extra-version='1~16.04.york0' -- 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
Input #0, mpegts, from 'udp://@localhost:1111':
Duration: N/A, start: 60047.944622, bitrate: 768 kb/s
Program 1
Metadata:
service_name : Service 1
service_provider: TKL
Stream #0:0[0x101]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 2
Metadata:
service_name : Service 2
service_provider: TKL
Stream #0:1[0x111]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 3
Metadata:
service_name : Service 3
service_provider: TKL
Stream #0:2[0x121]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 4
Metadata:
service_name : Service 4
service_provider: TKL
Stream #0:3[0x131]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 5
Metadata:
service_name : Service 5
service_provider: TKL
Stream #0:4[0x141]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 6
Metadata:
service_name : Service 6
service_provider: TKL
Stream #0:5[0x151]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 7
Metadata:
service_name : Service 7
service_provider: TKL
Stream #0:6[0x161]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Program 8
Metadata:
service_name : Service 8
service_provider: TKL
Stream #0:7[0x171]: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 96 kb/s
Output #0, ffm, to 'http://localhost:8090/feed1.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #0:0: Audio: mp2, 44100 Hz, mono, s16, 32 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Stream #0:1: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #1, ffm, to 'http://localhost:8090/feed2.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #1:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #2, ffm, to 'http://localhost:8090/feed3.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #2:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #3, ffm, to 'http://localhost:8090/feed4.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #3:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #4, ffm, to 'http://localhost:8090/feed5.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #4:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #5, ffm, to 'http://localhost:8090/feed6.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #5:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #6, ffm, to 'http://localhost:8090/feed7.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #6:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Output #7, ffm, to 'http://localhost:8090/feed8.ffm':
Metadata:
creation_time : now
encoder : Lavf57.56.101
Stream #7:0: Audio: mp2, 44100 Hz, stereo, s16, 64 kb/s
Metadata:
encoder : Lavc57.64.101 mp2
Stream mapping:
Stream #0:0 -> #0:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #0:1 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #1:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #2:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #3:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #4:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #5:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #6:0 (mp2 (native) -> mp2 (native))
Stream #0:0 -> #7:0 (mp2 (native) -> mp2 (native))
Press [q] to stop, [?] for help
thats my full console.
回答1:
You could do that by running 7 different instances of ffmpeg at the same time as parallel processes; if you're open to that.
Let each instance of ffmpeg demultiplex a single audio stream and output to the respective port.
Would go somewhat like this:
(ffmpeg -i udp://@localhost:1111 -map 0:a:0 http://localhost:8090/feed1.ffm )
& (ffmpeg -i udp://@localhost:1111 -map 0:a:1 http://localhost:8090/feed2.ffm )
& (ffmpeg -i udp://@localhost:1111 -map 0:a:2 http://localhost:8090/feed3.ffm )
& and so on.
Wouldn't recommend it though, will eat up your CPU's capacity.
回答2:
Basic syntax is ffmpeg -i input1 -i input2 {switches} output1 {switches} output2..., so
ffmpeg -i udp://@localhost:1111 -map 0:a:0 http://localhost:8090/feed1.ffm
-map 0:a:1 http://localhost:8090/feed2.ffm
-map 0:a:2 http://localhost:8090/feed3.ffm
...
来源：https://stackoverflow.com/questions/42248458/ffmpeg-output-separate-channel-from-an-input-with-multiple-channels