[FFmpeg-user] ffmpeg is not playing video stream from unix domain socket after first time

[Aakash raghav]

Steps to repro the issue :


1) Start the script: *node testScript.js*

2) run the ffmpeg command.

3) run the ffplay command.

4) close the ffplay command and run it again.



On 06/13/2019 11:08 AM, Aakash raghav wrote:
> Hi,
>
> I am stuck at a point where I created a script which reads data from a 
> unix domain socket and write it into the other one and the data is a 
> continuous video stream sent by ffmpeg.
>
> *
> *
>
> sockets used:-
>
> *testData* : socket in which ffmpeg is continuously sending video stream.
>
> *testPlay : *socket from which video feed is playing via ffplay.
>
>
> My problem is that if i play the video using ffplay from*testData* 
> socket it plays it normally for the first time but when i close ffplay 
> and play it again it shows the following error *Invalid data found 
> when processing input* .
>
>
> [/Possibly it is because the video headers are only included first 
> time when feed starts by ffmpeg in the socket /]
>
>
> Even if i specified the container format to flv in ffplay then the 
> ffplay generated error is :
>
> *[flv @ 0x7f7a54000b40] Read FLV header error, input file is not a 
> standard flv format, first PreviousTagSize0 always is 0**
> **[flv @ 0x7f7a54000b40] Packet mismatch 922746988 11 11**
> **[flv @ 0x7f7a54000b40] Unable to seek to the next packet 0B f=0/0 **
> **unix:/tmp/testPlay.sock: could not find codec parameters*
>
>
> I know that the video headers are missing but don't know how to 
> include them in the *testData* socket every time when the connection 
> is established to it.
>
>
> *ffmpeg command : *ffmpeg -i 
> rtsp://b1.dnsdojo.com:1935/live/sys3.stream -an -c:v copy -f flv 
> unix:/tmp/testData.sock
>
> *ffplay command : *ffplay -f flv unix:/tmp/testPlay.sock
>
> The socket script is attached in the mail.
>
>
> Thanks
>
> Akash
>
>
>
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