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• avcodec/cbs_sei : Fix leak of AVBufferRef on error

  9 mars 2021, par Andreas Rheinhardt

  avcodec/cbs_sei : Fix leak of AVBufferRef on error
  An AVBufferRef (and the corresponding AVBuffer and the underlying actual
  
  buffer) would leak in ff_cbs_sei_add_message() on error in case an error
  
  happened after its creation and before it has been attached to more
  
  permanent storage. Fix this by only creating the AVBufferRef immediately
  
  before attaching it to its intended target position.
  (Given that no SEI message currently created is refcounted, the above
  
  can't happen at the moment. But Coverity already nevertheless noticed :
  
  This commit fixes Coverity issue #1473521.)
  Reviewed-by : Mark Thompson <sw@jkqxz.net>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavcodec/cbs_sei.c

• avfilter/af_afir : Fix leak of AVFilterChannelLayout in case of error

  7 août 2020, par Andreas Rheinhardt

  avfilter/af_afir : Fix leak of AVFilterChannelLayout in case of error
  If an error happens between the allocation of an AVFilterChannelLayout
  
  and its usage (which involves attaching said object to a more permanent
  
  object), the channel layout array leaks. This can simply be fixed by
  
  making sure that nothing is between the allocation and the
  
  aforementioned usage.
  Fixes Coverity issue #1250334.
  Reviewed-by : Paul B Mahol <onemda@gmail.com>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
  

  • [DH] libavfilter/af_afir.c

• Cannot open connection tcp ://localhost:1935 when to set up custom RTMP stream server

  8 janvier 2021, par showkey

  My simple network is as following :

  


  192.168.31.52 is my local pc 
192.168.31.251 is an ip camera.


  


  I can open the stream rtsp://192.168.31.251/cam/realmonitor?channel=1&subtype=0 with SMPlayer.
  
Build my nginx for customizing RTMP stream this way.

  


  sudo apt update
sudo apt install build-essential git
sudo apt install libpcre3-dev libssl-dev zlib1g-dev 
git clone https://github.com/arut/nginx-rtmp-module.git
git clone https://github.com/nginx/nginx.git
cd nginx
./auto/configure --add-module=../nginx-rtmp-module
make
sudo make install


  


  Set config file for nginx :

  


  sudo vim /usr/local/nginx/conf/nginx.conf
rtmp { 
    server { 
        listen 1935; 
        application live { 
            live on; 
            interleave on;
 
            hls on; 
            hls_path /tmp/hls; 
            hls_fragment 15s; 
        } 
    } 
} 


  


  Then set permission for nginx :

  


  mkdir /tmp/hls
sudo chmod -R 755  /tmp/hls
sudo chown -R www-data:www-data  /tmp/hls


  


  Edit index.html in /tmp/hls.

  


  <p>test for nginx</p>&#xA;

  


  Both 127.0.0.1/index.html and 192.168.31.52/index.html can open the /tmp/hls/index.html.

  


  Now open port 1935 on my network :

  


  sudo firewall-cmd --zone=public --add-port=1935/tcp --permanent
sudo firewall-cmd --reload 
sudo firewall-cmd --list-ports | grep 1935
1935/tcp


  


  Start nginx :

  


  sudo systemctl start nginx


  


  Up stream the rtsp stream from ip camera—192.168.31.251 to local pc —192.168.31.52.

  


  input="rtsp://192.168.31.251/cam/realmonitor?channel=1&subtype=0"
output="rtmp://192.168.31.52:1935/live/sample"
ffmpeg -i $input -acodec aac -strict experimental -ar 44100 -ac 2 -b:a 96k -r 25 -b:v 500k -s 640*480 -f flv $output


  


  It encounter the following errors :

  


  [tcp @ 0x59fb700] Connection to tcp://192.168.31.52:1935 failed: Connection refused
[rtmp @ 0x59fc5c0] Cannot open connection tcp://192.168.31.52:1935
rtmp://192.168.31.52:1935/live/sample: Connection refused


  


  To keep the issue simple,i replace $input with a mp4 file in local pc,same error info.
  
How can fix it ?
  
Ping my machine :

  


  ping 192.168.31.52
PING 192.168.31.52 (192.168.31.52): 56 data bytes
64 bytes from 192.168.31.52: icmp_seq=0 ttl=64 time=0.108 ms
64 bytes from 192.168.31.52: icmp_seq=1 ttl=64 time=0.107 ms
64 bytes from 192.168.31.52: icmp_seq=2 ttl=64 time=0.111 ms


  


  Why the port 1935 not opened,i had restarted nginx after setting ?

  


  sudo lsof -i:1935
#nothing in the output
netstat -ltn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:51413           0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:1080          0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:8123          0.0.0.0:*               LISTEN     
tcp        0      0 127.0.0.1:8384          0.0.0.0:*               LISTEN     
tcp        0      0 0.0.0.0:9091            0.0.0.0:*               LISTEN     
tcp6       0      0 :::3306                 :::*                    LISTEN     
tcp6       0      0 :::80                   :::*                    LISTEN     
tcp6       0      0 :::22000                :::*                    LISTEN     
tcp6       0      0 :::51413                :::*                    LISTEN     
tcp6       0      0 :::21                   :::*                    LISTEN     
tcp6       0      0 :::22                   :::*                    LISTEN     
tcp6       0      0 ::1:25                  :::*                    LISTEN     
tcp6       0      0 :::2681                 :::*                    LISTEN  


  


  Firewall command can't work :

  


  sudo firewall-cmd --zone=public --add-port=1935/tcp --permanent
sudo firewall-cmd --reload 


  


  My nginx version :

  


  sudo nginx -v
nginx version: nginx/1.10.3