Live broadcast Poor recording

[202774025]

Hello, why can't I use this to record the live broadcast I recorded from the Internet? It feels a little fuzzy, the original live broadcast picture is not like this, if the VideoBitrate setting is smaller, the Mosaic will be more obvious. I have tried to record many live broadcasts, and this is the code example. When I made the VideoBitrate smaller, it was more obvious. "ffmpeg.exe" record does not have this problem, I want to know how to optimize the configuration

try (FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(URL.of(URI.create(url), null))) {
            grabber.setOption("rtsp_transport", "tcp");
            grabber.setOption("rtsp_flags", "prefer_tcp");
            grabber.start();
            try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputPath, grabber.getAudioChannels())) {
                recorder.setImageWidth(grabber.getImageWidth());
                recorder.setImageHeight(grabber.getImageHeight());
                recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
                recorder.setVideoBitrate(grabber.getVideoBitrate());
                recorder.setAudioBitrate(grabber.getAudioBitrate());
                recorder.setFrameRate(grabber.getFrameRate());
                recorder.setGopSize(4);
                recorder.start();
                long lastFrameTime = System.currentTimeMillis();
                while (true) {
                    Frame capturedFrame = grabber.grabFrame();
                    if (capturedFrame != null) {
                        lastFrameTime = System.currentTimeMillis();
                        recorder.record(capturedFrame);
                    } else if (System.currentTimeMillis() - lastFrameTime > 30000) {
                        break;
                    }
                }
            } catch (Exception e) {
                log.error(e.getMessage());
            }
        }

This was recorded by current project

This was recorded by ffmpeg.exe

[saudet]

Please make sure you're using libx264