【发布时间】：2021-12-29 12:45:48
【问题描述】：
我想为 NGINX rtmp 模块使用 HLS_Variant 功能。 但是，如果我按照文档中的示例进行操作，我将无法使用它。
我有以下测试：
application Test {
live on;
record off;
on_publish http://127.0.0.1/php/rtmp_auth.php;
on_publish_done http://127.0.0.1/php/on_publish_done.php;
exec_push /usr/local/bin/ffmpeg -loglevel debug -i rtmp://localhost:1935/Test/$name
-c:v libx264 -acodec aac -preset veryfast -b:v 256k -tune zerolatency -vf "scale=480:trunc(ow/a/2)*2" -f flv rtmp://localhost:1935/Z006/$name_low
-c:v libx264 -acodec aac -preset veryfast -b:v 768k -tune zerolatency -vf "scale=720:trunc(ow/a/2)*2" -f flv rtmp://localhost:1935/Z006/$name_mid
-c:v libx264 -acodec aac -preset veryfast -b:v 1024k -tune zerolatency -vf "scale=960:trunc(ow/a/2)*2" -f flv rtmp://localhost:1935/Z006/$name_high
-c:v libx264 -acodec aac -preset veryfast -b:v 1920k -tune zerolatency -vf "scale=1280:trunc(ow/a/2)*2" -f flv rtmp://localhost:1935/Z006/$name_higher
-c copy -f flv rtmp://localhost:1935/Z006/$name_src 2>>/tmp/Log.log; }
application Z006 {
live on;
record off;
hls on;
hls_path /usr/local/www/stream/tmp/hls0;
hls_nested on;
hls_variant _low BANDWIDTH=288000; # _low - Low bitrate, sub-SD resolution
hls_variant _mid BANDWIDTH=448000; # _mid - Medium bitrate, SD resolution
hls_variant _high BANDWIDTH=1152000; # _high - Higher-than-SD resolution
hls_variant _higher BANDWIDTH=2048000; # _higher - High bitrate, HD 720p resolution
hls_variant _src BANDWIDTH=4096000; # _src - Source bitrate, source resolution
}
如您所见，这并没有什么特别之处。 生成的日志如下所示：
ffmpeg version 4.4 Copyright (c) 2000-2021 the FFmpeg developers
built with FreeBSD clang version 10.0.1 (git@github.com:llvm/llvm-project.git llvmorg-10.0.1-0-gef32c611aa2)
configuration: --prefix=/usr/local --mandir=/usr/local/man --datadir=/usr/local/share/ffmpeg --pkgconfigdir=/usr/local/libdata/pkgconfig --disable-static --enable-shared --enable-pic --enable-gpl --enable-avresample --cc=cc --cxx=c++ ->
libavutil 56. 70.100 / 56. 70.100
libavcodec 58.134.100 / 58.134.100
libavformat 58. 76.100 / 58. 76.100
libavdevice 58. 13.100 / 58. 13.100
libavfilter 7.110.100 / 7.110.100
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 9.100 / 5. 9.100
libswresample 3. 9.100 / 3. 9.100
libpostproc 55. 9.100 / 55. 9.100
Splitting the commandline.
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
Reading option '-i' ... matched as input url with argument 'rtmp://localhost:1935/Test//'.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'aac'.
Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '256k'.
Reading option '-tune' ... matched as AVOption 'tune' with argument 'zerolatency'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=480:trunc(ow/a/2)*2'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://localhost:1935/Z006//_low' ... matched as output url.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'aac'.
Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '768k'.
Reading option '-tune' ... matched as AVOption 'tune' with argument 'zerolatency'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=720:trunc(ow/a/2)*2'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://localhost:1935/Z006//_mid' ... matched as output url.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'aac'.
Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '1024k'.
Reading option '-tune' ... matched as AVOption 'tune' with argument 'zerolatency'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=960:trunc(ow/a/2)*2'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://localhost:1935/Z006//_high' ... matched as output url.
Reading option '-c:v' ... matched as option 'c' (codec name) with argument 'libx264'.
Reading option '-acodec' ... matched as option 'acodec' (force audio codec ('copy' to copy stream)) with argument 'aac'.
Reading option '-preset' ... matched as AVOption 'preset' with argument 'veryfast'.
Reading option '-b:v' ... matched as option 'b' (video bitrate (please use -b:v)) with argument '1920k'.
Reading option '-tune' ... matched as AVOption 'tune' with argument 'zerolatency'.
Reading option '-vf' ... matched as option 'vf' (set video filters) with argument 'scale=1280:trunc(ow/a/2)*2'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://localhost:1935/Z006//_higher' ... matched as output url.
Reading option '-c' ... matched as option 'c' (codec name) with argument 'copy'.
Reading option '-f' ... matched as option 'f' (force format) with argument 'flv'.
Reading option 'rtmp://localhost:1935///_src' ... matched as output url.
Finished splitting the commandline.
Parsing a group of options: global .
Applying option loglevel (set logging level) with argument debug.
Successfully parsed a group of options.
Parsing a group of options: input url rtmp://localhost:1935/Test//.
Successfully parsed a group of options.
Opening an input file: rtmp://localhost:1935/Test//.
[NULL @ 0x80609a000] Opening 'rtmp://localhost:1935/Test//' for reading
[rtmp @ 0x806089300] No default whitelist set
[tcp @ 0x806089380] No default whitelist set
[tcp @ 0x806089380] Original list of addresses:
[tcp @ 0x806089380] Address 127.0.0.1 port 1935
[tcp @ 0x806089380] Address ::1 port 1935
[tcp @ 0x806089380] Interleaved list of addresses:
[tcp @ 0x806089380] Address 127.0.0.1 port 1935
[tcp @ 0x806089380] Address ::1 port 1935
[tcp @ 0x806089380] Starting connection attempt to 127.0.0.1 port 1935
[tcp @ 0x806089380] Successfully connected to 127.0.0.1 port 1935
[rtmp @ 0x806089300] Handshaking...
[rtmp @ 0x806089300] Type answer 3
[rtmp @ 0x806089300] Server version 13.14.10.13
[rtmp @ 0x806089300] Proto = rtmp, path = /Test//, app = Test/, fname =
[rtmp @ 0x806089300] Window acknowledgement size = 5000000
[rtmp @ 0x806089300] Max sent, unacked = 5000000
[rtmp @ 0x806089300] New incoming chunk size = 4096
[rtmp @ 0x806089300] Creating stream...
[rtmp @ 0x806089300] Sending play command for ''
我认为错误显然是 Empty 'fname'。 但我不知道该怎么办？
编辑：
即使我将 $name 更改为我在 OBS 中使用的 Streamname，转换也不会开始。
【问题讨论】：
标签： nginx ffmpeg http-live-streaming rtmp