Javacv: Video codec hevc not compatible with flv

[sonic329074128]

    public void toRtmp(String out) throws IOException {
        record = new FFmpegFrameRecorder(out, width, height);
        record.setGopSize(2);
        record.setFrameRate(grabber.getFrameRate());
        record.setVideoBitrate(bitrate);
        record.setPixelFormat(avutil.AV_PIX_FMT_YUV420P);
        record.setVideoCodec(avcodec.AV_CODEC_ID_H264);
        AVFormatContext fc = null;
        if (out.contains("rtmp") || out.indexOf("flv") > 0) {
            record.setFormat("flv");
            //record.setFormat("hevc");
            if(audiocodecid!=0){
                record.setAudioCodecName("aac");
            }
            fc = grabber.getFormatContext();
        }
        record.start(fc);
    }

I set recorder's VideoCodec to H264 but it doesn't work.
Could you tell me that javacv1.5.3 maybe change hevc to H264?
I see ffmpeg 4.2.2 can do it.

[saudet]

Sure, it works fine. Please try again with JavaCV 1.5.4-SNAPSHOT: http://bytedeco.org/builds/

[sonic329074128]

Sure, it works fine. Please try again with JavaCV 1.5.4-SNAPSHOT: http://bytedeco.org/builds/

OK，I try to use JavaCV 1.5.4,and my codes which I show is right?

[saudet]

Yeah, that looks alright...

[sonic329074128]

Yeah, that _looks_ alright...

[rtsp @ 0000000000bfb400] Status 302: Redirecting to rtsp://172.20.105.67:9100/dss/monitor/param/cameraid=1000051%240%26substream=2?token=210&trackID=0
Input #0, rtsp, from 'rtsp://172.20.105.67:9090/dss/monitor/param?cameraid=1000051%240&substream=2':
Metadata:
title : RTSP Session/2.0
Duration: N/A, start: 0.040000, bitrate: N/A
Stream #0:0: Video: hevc (Main), yuvj420p(pc, bt470bg/bt470bg/bt709), 704x576, 25 fps, 25 tbr, 90k tbn, 90k tbc
[flv @ 000000002210f080] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
[flv @ 000000002210f080] Video codec hevc not compatible with flv

I used JavaCV 1.5.4-SNAPSHOT but it return this error.please tell me how can I change hevc to flv. I dont know how to fix it

[saudet]

[flv @ 000000002210f080] Video codec hevc not compatible with flv

It doesn't look like FFmpeg supports that with FLV. You'll probably need to use another format.

[sonic329074128]

[flv @ 000000002210f080] Video codec hevc not compatible with flv

It doesn't look like FFmpeg supports that with FLV. You'll probably need to use another format.
but I used FFmpeg can do that : ffmpeg -rtsp_transport tcp -i "rtsp://172.20.105.67:9090/dss/monitor/param?cameraid=1000051%240&substream=1" -f flv rtmp://127.0.0.1:1935/live/mystream
it work fine.
if JavaCV is not supports,I have to find anohter way?

[saudet]

FLV works fine with h264, yes, so you can use that.