[Libav-user] [NEWSLETTER] help

[Carlos Esponda]

I see! That makes sense! Thank you I now make it past the open input

On Fri, Jul 31, 2020 at 10:08 AM Richard Hussong <rhussong at westpond.com>
wrote:

> The interrupt_callback is not an error callback; it is called periodically
> during length operations. You need to return 0 from your decode_interrupt()
> if you want to continue processing. Otherwise, you get the "immediate exit
> requested" error.
>
> - Richard
>
> On Fri, Jul 31, 2020 at 10:42 AM Carlos Esponda <esponda.carlos9 at gmail.com>
> wrote:
>
>> I tried it, confirm it was valid with VLC however “immediate exit
>> requested” is still the error I get.
>>
>> On Fri, Jul 31, 2020 at 9:30 AM KeithG <ys3al35l at gmail.com> wrote:
>>
>>> Try this URL:
>>>
>>> rtsp://wowza.radia.cz:1935/CRo/DDur.stream
>>>
>>> Keith
>>>
>>> On Fri, Jul 31, 2020 at 9:11 AM Carlos Esponda <
>>> esponda.carlos9 at gmail.com> wrote:
>>>
>>>> I took out my IP address just for anonymity. (I’m new to networking and
>>>> not sure if it mattered) however I confirm my url works by testing it with
>>>> VLC.  The error I always get is “immediate exit requested”
>>>>
>>>> On Fri, Jul 31, 2020 at 8:34 AM Mihai Chindea <mihai.chindea at uti.eu.com>
>>>> wrote:
>>>>
>>>>> i think your problem is the url you are passing to
>>>>> "avformat_open_input", RTSP runs on top of TCP, i doubt it works without a
>>>>> valid hostname/ip address.
>>>>>
>>>>>
>>>>> Mihai,
>>>>>
>>>>>
>>>>> ------------------------------
>>>>> *From:* Libav-user <libav-user-bounces at ffmpeg.org> on behalf of
>>>>> Carlos Esponda <esponda.carlos9 at gmail.com>
>>>>> *Sent:* Friday, July 31, 2020 2:25 AM
>>>>> *To:* libav-user at ffmpeg.org
>>>>> *Subject:* [NEWSLETTER] [Libav-user] help
>>>>>
>>>>> I am currently trying to read an RTSP stream with FFMPEG and can't get
>>>>> past avformat_open_input.
>>>>>
>>>>> Any help would be appreciated!
>>>>>
>>>>> thank you.
>>>>>
>>>>>   #include <iostream>
>>>>>
>>>>> extern "C"
>>>>> {
>>>>> #include <libavformat/avformat.h>
>>>>> #include <libavcodec/avcodec.h>
>>>>> #include <libavcodec/codec.h>
>>>>> #include "libswscale/swscale.h"
>>>>> #include "libavutil/avutil.h"
>>>>> #include "libavutil/frame.h"
>>>>> #include "libavcodec/codec_id.h"
>>>>> #include "libavutil/pixfmt.h"
>>>>> #include "libavutil/imgutils.h"
>>>>> }
>>>>>
>>>>>
>>>>> int decode_interrupt(void*);
>>>>>
>>>>> int main()
>>>>> {
>>>>>     AVFrame* frame = NULL;
>>>>>     AVFormatContext* formatc = NULL;
>>>>>     const AVIOInterruptCB int_cb = { decode_interrupt, NULL };
>>>>>     AVCodec* codec = NULL;
>>>>>     AVCodecContext* codecc = NULL;
>>>>>     char* error = new char[255];
>>>>>
>>>>>     if (!(frame = av_frame_alloc())) {
>>>>>         std::cout << " failed to alloc frame";
>>>>>         return -1;
>>>>>     }
>>>>>     formatc = avformat_alloc_context();
>>>>>     formatc->interrupt_callback = int_cb;
>>>>>
>>>>>     codec = avcodec_find_decoder(AV_CODEC_ID_H264);
>>>>>     codecc = avcodec_alloc_context3(codec);
>>>>>     int result = avcodec_open2(codecc, codec, NULL);
>>>>>     if (result != 0) {
>>>>>         std::cout << "failed to open codec";
>>>>>     }
>>>>>
>>>>>     result = avformat_open_input(&formatc, "rtsp://:8554/testStream",
>>>>> NULL, NULL);
>>>>>     if (result != 0) {
>>>>>         av_strerror(result, error, 255);
>>>>>         std::cout << "couldnt open input " << error<< std::endl;
>>>>>         avformat_close_input(&formatc);
>>>>>         return -1;
>>>>>     }
>>>>>
>>>>>     result = avformat_find_stream_info(formatc, NULL);
>>>>>     if (result != 0) {
>>>>>         std::cout << "could not find stream information\n";
>>>>>         return -1;
>>>>>     }
>>>>>
>>>>>     return 0;
>>>>> }
>>>>>
>>>>> int decode_interrupt(void * ctx) {
>>>>>     std::cout << "interupted\n";
>>>>>     return -1;
>>>>> }
>>>>>
>>>>> _______________________________________________
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>>>>
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>>
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