https://github.com/derolf/transcoder
我需要在我的项目中本地转码和本地播放，没有其他外部连接到服务器。
它是 ffmpeg 进行动态转码的一个很好的来源。
就我而言，我必须将其转码为 mp4，因为它可以执行得更快。
但是我遇到了以下问题，我需要一些帮助来解决它。
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 34089)
Traceback (most recent call last):
File "/usr/lib/python2.7/SocketServer.py", line 593, in process_request_thread
self.finish_request(request, client_address)
File "/usr/lib/python2.7/SocketServer.py", line 334, in finish_request
self.RequestHandlerClass(request, client_address, self)
File "/usr/lib/python2.7/SocketServer.py", line 651, in __init__
self.finish()
File "/usr/lib/python2.7/SocketServer.py", line 710, in finish
self.wfile.close()
File "/usr/lib/python2.7/socket.py", line 279, in close
self.flush()
File "/usr/lib/python2.7/socket.py", line 303, in flush
self._sock.sendall(view[write_offset:write_offset+buffer_size])
error: [Errno 32] Broken pipe
这是我的代码:
服务器.py
from flask import Flask, request, Response, abort, send_file, jsonify
import os, subprocess, re
import config
app = Flask(__name__)
@app.route('/media/<path:path>.js')
def media_content_js(path):
d= os.path.abspath( os.path.join( config.media_folder, path ) )
print d
if not os.path.isfile( d ): abort(404)
cmdline= list()
cmdline.append( config.ffmpeg )
cmdline.append( "-i" )
cmdline.append( d );
print cmdline
duration= -1
FNULL = open(os.devnull, 'w')
proc= subprocess.Popen( cmdline, stderr=subprocess.PIPE, stdout=FNULL )
try:
for line in iter(proc.stderr.readline,''):
line= line.rstrip()
#Duration: 00:00:45.13, start: 0.000000, bitrate: 302 kb/s
m = re.search('Duration: (..):(..):(..)\...', line)
if m is not None: duration= int(m.group(1)) * 3600 + int(m.group(2)) * 60 + int(m.group(3)) + 1
finally:
proc.kill()
return jsonify(duration=duration)
@app.route('/media/<path:path>.mp4')
def media_content_ogv(path):
d= os.path.abspath( os.path.join( config.media_folder, path ) )
print d
if not os.path.isfile( d ): abort(404)
start= request.args.get("start") or 0
print start
def generate():
cmdline= list()
cmdline.append( config.ffmpeg )
cmdline.append( "-i" )
cmdline.append( d );
cmdline.append( "-ss" )
cmdline.append( str(start) );
cmdline.extend( config.ffmpeg_args )
print cmdline
FNULL = open(os.devnull, 'w')
proc= subprocess.Popen( cmdline, stdout=subprocess.PIPE, stderr=FNULL )
try:
f= proc.stdout
byte = f.read(512)
while byte:
yield byte
byte = f.read(512)
finally:
proc.kill()
return Response(response=generate(),status=200,mimetype='video/mp4',headers={'Access-Control-Allow-Origin': '*', "Content-Type":"video/mp4","Content-Disposition":"inline","Content-Transfer-Enconding":"binary"})
@app.route('/', defaults={"path":"index.html"})
@app.route('/<path:path>')
def static_content(path):
d= os.path.abspath( os.path.join( config.static_folder, path ) )
if not os.path.isfile( d ): abort(404)
return send_file( d )
app.run( host="0.0.0.0",port=config.port, threaded=True, debug=True )
配置文件
media_folder= "media"
static_folder= "static"
port= 8123
ffmpeg= "/usr/bin/ffmpeg"
ffmpeg_args= [ "-f", "avi" ,"-acodec", "libfdk_aac", "-b:a", "128k", "-vcodec", "libx264", "-b:v", "1200k" , "-flags" , "+aic+mv4", "pipe:1"]
索引.html
<!DOCTYPE html>
<html>
<head>
<link href="http:////vjs.zencdn.net/4.5/video-js.css" rel="stylesheet">
<script src="http://vjs.zencdn.net/4.5/video.js"></script>
<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
</head>
<body>
<video id="video" class="video-js vjs-default-skin" controls preload="auto" width="640" height="264">
</video>
<script>
var video= videojs('video');
video.src("media/testavi.avi.mp4");
// hack duration
video.duration= function() { return video.theDuration; };
video.start= 0;
video.oldCurrentTime= video.currentTime;
video.currentTime= function(time)
{
if( time == undefined )
{
return video.oldCurrentTime() + video.start;
}
console.log(time)
video.start= time;
video.oldCurrentTime(0);
video.src("media/testavi.avi.mp4?start=" + time);
video.play();
return this;
};
$.getJSON( "media/testavi.avi.js", function( data )
{
video.theDuration= data.duration;
});
</script>
</body>
最佳答案
我也遇到过一些问题，解决方案是使用 shell 调用 ffmpeg。为什么？因为 FFmpeg 没有输入参数，所以它有参数。
我使用以下代码在 python 中转码:
import subprocess
ffmpeg_pipe="ffmpeg -i fileinput -vcodec libx264 out.mp4"
pid = subprocess.Popen(ffmpeg_pipe, shell=True).pid
关于python - 使用 derolf/transcoder 进行动态转码，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32439242/