Wrong video output in RTSP connection with different ports

[PineapplePie]

I have a strange issue. Steps to reproduce: 1) Connect to rtsp with url like "rtsp://user:pass@[ip][:port]". 2) Release, set to null IjkMediaPlayer object and remove a parent view, which contains my TextureView. 3) After reinitializing view and IjkMediaPlayer object set the same url, but with another port. In logcat I see, that I've passed the correct url, but the video output is wrong - I have the previous video, not the new one. In other players like VLC with these links I get the correct data. And no matter how much times I'll reconnect, it still shows me the video from first link I've set.

Does anybody face the similar problem?

[PineapplePie]

@raymond1012 or maybe somebody, who had worked on this project?

[PineapplePie]

I've recompiled from version 0.8.8 to 0.8.0 - all works perfectly, but I want the latest release

[rafalmodrzynski]

The same problem

[rafalmodrzynski]

Problem is in libavutil/tcp.c and dns_cache.c

int add_dns_cache_entry(char hostname, struct addrinfo cur_ai, int64_t timeout)

I disabled cache and works. if (!dns_entry) { -> if (1) {

[zainali84]

I am facing same problem. I am playing multiple rtsp streams with same ip and different ports but getting same output on all players. I tried playing on vlc and it works fine on vlc.

[yourchanges]

patch : https://patchwork.ffmpeg.org/patch/10543/mbox/

[374601404]

@yourchanges Thanks! And the same problem I came in had been resolved.

[JPhillipsCamcloud]

@rafalmodrzynski we have come across an issue with the cached dns system that was added inside ffmpeg as well, we want to disable it. I looked at your comment above and you disable it somehow. i have the ffmpeg code infront of me. What exactly do i have to change inside tcp.c, and do i also have to change something inside dns_cache.c? Thank you.

[rafalmodrzynski]

I don't remember exactly, but finally we don't need anything changed in ffmpeg. Let's try with: IJK_FFMPEG_COMMIT=ff4.0--ijk0.8.25--20190531--001 or IJK_FFMPEG_COMMIT=ff4.0--ijk0.8.25--20180724--001 or IJK_FFMPEG_COMMIT=ff3.4--ijk0.8.7--20180612--001

and ijkplayer commit SHA1cced91e3ae3730f5c63f3605b00d25eafcf5b97b [k0.8.8]

[374601404]

@rafalmodrzynski we have come across an issue with the cached dns system that was added inside ffmpeg as well, we want to disable it. I looked at your comment above and you disable it somehow. i have the ffmpeg code infront of me. What exactly do i have to change inside tcp.c, and do i also have to change something inside dns_cache.c? Thank you.

while ijk work in ipv6,the dns cache will return the wrong cached IP address,so we can unable the dns cache,in tcp.c tcp_open(URLContext h, const char uri, int flags),find "get_dns_cache_reference(hostname, portstr)" and comment out that line.Or we can also fix the ipv6 cached bug.