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for snapshot, choose the best to link to the [stream]-best.png

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This commit is contained in:
winlin 2015-10-20 13:38:03 +08:00
parent 33a282e576
commit 1aa4502d5f
1 changed files with 30 additions and 7 deletions
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33
trunk/research/api-server/server.py
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@ -940,8 +940,13 @@ class SrsWorker(cherrypy.process.plugins.SimplePlugin):
print 'abort snapshot %s'%snapshot['cmd']
break
# how many snapshots to output.
vframes = 6
# the expire in seconds for ffmpeg to snapshot.
expire = 10
# already snapshoted and not expired.
if process is not None and diff < 10:
if process is not None and diff < expire:
continue
# terminate the active process
@ -951,17 +956,35 @@ class SrsWorker(cherrypy.process.plugins.SimplePlugin):
# None incidates the process hasn't terminate yet.
if process.returncode is not None:
# process terminated, check the returncode.
# process terminated with error.
if process.returncode != 0:
print 'process terminated with error=%s, cmd=%s'%(process.returncode, snapshot['cmd'])
# process terminated normally.
else:
# guess the best one.
bestsize = 0
besturl = os.path.join(static_dir, "%s/%s-best.png"%(snapshot['app'], snapshot['stream']))
for i in range(0, vframes):
output = os.path.join(static_dir, "%s/%s-%03d.png"%(snapshot['app'], snapshot['stream'], i + 1))
fsize = os.path.getsize(output)
if bestsize < fsize:
os.system("rm -f '%s'"%besturl)
os.system("ln -sf '%s' '%s'"%(output, besturl))
bestsize = fsize
print 'the best thumbnail is %s'%besturl
else:
# wait for process to terminate, timeout is N*expire.
if diff < 10 * expire:
continue
# kill the process when user cancel.
else:
process.kill()
print 'kill the process %s'%snapshot['cmd']
# create new process to snapshot.
ffmpeg = "./objs/ffmpeg/bin/ffmpeg"
output = os.path.join(static_dir, "%s-%s-%%3d.png"%(snapshot['app'], snapshot['stream']))
cmd = '%s -i %s -vf fps=1/6 -vcodec png -f image2 -an -y -vframes 3 -y %s'%(ffmpeg, url, output)
output = os.path.join(static_dir, "%s/%s-%%03d.png"%(snapshot['app'], snapshot['stream']))
cmd = '%s -i %s -vf fps=1/6 -vcodec png -f image2 -an -y -vframes %s -y %s'%(ffmpeg, url, vframes, output)
print 'snapshot by: %s'%cmd
process = create_process(cmd, discard.fileno(), discard.fileno())
@ -971,7 +994,7 @@ class SrsWorker(cherrypy.process.plugins.SimplePlugin):
pass;
# {"action":"on_publish","client_id":108,"ip":"127.0.0.1","vhost":"__defaultVhost__","app":"live","stream":"livestream"}
# ffmpeg -i rtmp://127.0.0.1:1935/live?vhost=dev/stream -vf fps=1/6 -vcodec png -f image2 -an -y -vframes 3 -y static-dir/live-livestream-%3d.png
# ffmpeg -i rtmp://127.0.0.1:1935/live?vhost=dev/stream -vf fps=1/6 -vcodec png -f image2 -an -y -vframes 3 -y static-dir/live/livestream-%03d.png
def snapshot_create(self, req):
url = "rtmp://127.0.0.1/%s...vhost...%s/%s"%(req['app'], req['vhost'], req['stream'])
if url in self.__snapshots: