ffmpeg-如何传递HTTP标头? [英] ffmpeg - How to pass http headers?
问题描述
我需要将http标头(用户代理和ip)传递给ffmpeg命令.
I need to pass http headers (user agent and ip) to an ffmpeg command.
我使用以下命令:
ffmpeg -y -timeout 5000000 -map 0:0 -an -sn -f md5 - -headers "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36" -headers "X-Forwarded-For: 13.14.15.66" -i "http://127.0.0.1"
然后我运行一个本地的node.js服务器来查看我得到的标头:
And I run a local node.js server to see the headers I get:
'use strict';
var express = require('express');
var server = express();
server.all('/*', function(req, res) {
console.log(JSON.stringify(req.headers));
res.sendFile('SampleVideo_1080x720_1mb.mp4', {root: '.'});
});
server.listen(80);
我一直收到一条错误消息:在HTTP标头中找不到尾随的CRLF."并且请求被卡住了.
I keep getting an error saying "No trailing CRLF found in HTTP header." and the request is stuck.
如果我放下标题-一切正常.
If I drop the headers - everything works normally.
我还尝试将两个标头都放在一个字符串中，但是我使用的任何换行符(\ r \ n，\ r \ n等)均无效.
I also tried putting both headers in one string, but any line breaking character I used (\r\n, \r\n, etc.) didn't work.
有人可以帮我弄清楚如何正确地使用附带的标头来编写此命令吗?
Can someone help me figure out how to write this command correctly with the headers included?
推荐答案
简短回答
确保您使用的是最新的 ffmpeg ，并使用 -user-agent 选项.
对于调试，我设置了 BaseHTTPSever ，其运行于 127.0.0.1:8080 ，其中 do_GET()为:
For debugging, I setup a BaseHTTPSever running at 127.0.0.1:8080 with do_GET() as:
def do_GET(self):
try:
f = open(curdir + sep + self.path, 'rb')
self.send_response(200)
self.end_headers()
print("GET: "+ str(self.headers))
self.wfile.write(f.read())
f.close()
return
except IOError:
self.send_error(404,'File Not Found: %s' % self.path)
运行后，这使我可以运行您的命令，例如:
With that running, this enabled me to run your command like:
ffmpeg \
-y \
-timeout 5000000 \
-map 0:0 \
-an \
-sn \
-f md5 - \
-headers "User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36" \
-headers "X-Forwarded-For: 13.14.15.66" \
-i "http://127.0.0.1:8080/some_video_file.mp4" \
-v trace
执行此操作时，我从 ffmpeg 中看到以下相关输出:
When I do this, I see the following relevant output from ffmpeg:
Reading option '-headers' ... matched as AVOption 'headers' with argument 'User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36'.
Reading option '-headers' ... matched as AVOption 'headers' with argument 'X-Forwarded-For: 13.14.15.66'.
在服务器上，我看到了:
On the server, I saw:
User-Agent: Lavf/56.40.101
X-Forwarded-For: 13.14.15.66
所以看起来 ffmpeg 设置了它自己的.但是，对于 ffmpeg ，有一个 -user-agent 选项，当我将 -headers"User-Agent:< foo>" 替换为 -user-agent< foo>" ，然后我也确实在服务器上看到它，以及 X-Forwarded-For 标头:
So it looks like ffmpeg is setting it's own. But there is an option -user-agent to ffmpeg, and when I replaced -headers "User-Agent: <foo>" with -user-agent "<foo>", I then did see it too on the server, alongside the X-Forwarded-For header:
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/46.0.2490.80 Safari/537.36
最后的提示.关于 ffmpeg 的trac中的标头错误，有很多讨论.我在上面观察到的(基本上是 起作用，也许只需进行少量命令更改)就是一个相当新的版本:
Last note. There are lots of discussions around headers bugs in trac for ffmpeg. What I have observed above (that essentially it is working, perhaps with a small command change) was with a fairly recent version:
ffmpeg version 2.8.1 Copyright (c) 2000-2015 the FFmpeg developers
built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04)
configuration: --enable-libx264 --enable-gpl --prefix=/usr/local --enable-shared --cc='gcc -fPIC'
libavutil 54. 31.100 / 54. 31.100
libavcodec 56. 60.100 / 56. 60.100
libavformat 56. 40.101 / 56. 40.101
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 40.101 / 5. 40.101
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.101 / 1. 2.101
libpostproc 53. 3.100 / 53. 3.100
因此，您的下一步可能是确保您具有最新版本的 ffmpeg .
So, your next move might be make sure you have the latest version of ffmpeg.
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