如何使用ffmpeg命令生成RTMP测试流? [英] How to generate an RTMP test stream using ffmpeg command?
问题描述
我想通过生成带有时间戳的RTMP测试视频来测试我的流媒体基础架构.看起来像是屏幕 .图像没关系.我只在工作流动态生成和时间戳之后.我打算为此目的使用 ffmpeg 工具.该命令可能类似于
I would like to test my streaming infrastructure by generating an RTMP test video with a timestamp. This could look like that screen. The image doesn't matter. I'm after the working stream generated on-the-fly and timestamp only. I intend to use the ffmpeg tool for that purpose. The command could look something like
$ ffmpeg -i image.png \
-vf drawtext="fontfile=/Library/Fonts/Arial.ttf: \
timecode='00\:00\:00\:00': r=1: fontcolor=white: \
fontsize=24: box=1: boxcolor=black@0.5: \
boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2" \
-f flv rtmp://localhost/live/test
我确实在本地运行基于NGINX及其RTMP模块的流服务器.
但是,以上命令给了我以下错误:
However, the above command gives me the following error:
Input #0, png_pipe, from 'image.png':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: png, rgb24(pc), 768x576 [SAR 7874:7874 DAR 4:3], 25 tbr, 25 tbn, 25 tbc
Stream mapping:
Stream #0:0 -> #0:0 (png (native) -> flv1 (flv))
Press [q] to stop, [?] for help
[Parsed_drawtext_0 @ 0x7fb78450ece0] Using non-standard frame rate 1/1
Output #0, flv, to 'rtmp://localhost/live/test':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 768x576 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 25 fps, 1k tbn, 25 tbc
Metadata:
encoder : Lavc57.89.100 flv
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
[flv @ 0x7fb785812a00] Failed to update header with correct duration.
[flv @ 0x7fb785812a00] Failed to update header with correct filesize.
frame= 1 fps=0.0 q=8.6 Lsize= 50kB time=00:00:00.00 bitrate=406016.0kbits/s speed=0.019x
video:49kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.451271%
流服务器正常运行.问题出在命令上.有人可以帮助我吗?
The streaming server operates as expected. The problem is with the command. Would anyone be able to help me?
推荐答案
ffmpeg具有testsrc
您可以用作测试源输入流:
ffmpeg has testsrc
you can use as a test source input stream:
ffmpeg -r 30 -f lavfi -i testsrc -vf scale=1280:960 -vcodec libx264 -profile:v baseline -pix_fmt yuv420p -f flv rtmp://localhost/live/test
-r
,缩放比例,配置文件等仅是示例,可以省略/播放.重点是使用-i testsrc
-r
, scaling, profile, etc are just an example and can be ommited/played with. The point is using -i testsrc
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