Problem with streamming to wowza

[DuongHieuMAI]

Hi @jkuri Thank you for sharing your source code. I changed the out put to stream to wowza server. But there were two lines across the frame like this: https://cl.ly/310G0i423B0b Have you ever met this issue ?

[jkuri]

hi @DuongHieuMAI! I don't understand what is the issue, can you clarify a bit?

[jkuri]

oh sorry, I see the lines in the video.. I noticed that before as well. try disconnecting camera from USB and connecting again... it helps usually.

[DuongHieuMAI]

@jkuri Thank you very much for your reply. But unfortunately, it didn't work for me. I'm using Ubuntu 16.04.4 LTS. Maybe your solution works on MacOS only or other Ubuntu version.

[berli]

@jkuri I have the same problem when using usb camera and open mp4 files

[jkuri]

sorry but I am on vacations now. make sure you set width and height

[berli]

@jkuri yes, I add the resize in do loop , as following:

        cv::resize(image, image, cv::Size(width, height));         

        const int stride[] = {static_cast<int>(image.step[0])};   

        sws_scale(swsctx, &image.data, stride, 0, image.rows, frame->data, frame->linesize);    

        frame->pts += av_rescale_q(1, out_codec_ctx->time_base, out_stream->time_base);   

        write_frame(out_codec_ctx, ofmt_ctx, frame);  `

but it also doesn't work yet, I get the the error:

https://github.com/jkuri/opencv-ffmpeg-rtmp-stream/issues/4

pls help, thank you in advance~

[jkuri]

@berli, you don't need to resize frames in code. if you check documentation (readme) carefuly again you'll notice that you can pass parameters for --width and --height from the command line. make sure that your webcam supports dimension you are passing as parameters and it should work.

[berli]

@jkuri oh , thank you for your reply; I found, it will crash https://github.com/jkuri/opencv-ffmpeg-rtmp-stream/issues/4 if I input video by webcam , but it works well if input by reading avi file; so I wonder if it's because there's no pts or dts coming in？