Quomodo VR tincidunt fabula 8K RTSP cum low latency|RTMP streaming

Quomodo VR headset fabula 8K RTSP|RTMP rivus cum humili latency?

2024-07-12

technica background

Cum RTSP et RTMP histriones pro suggestu Unito faceremus, nonnullae turmae huiusmodi technicae requisita proponebant, sperantes rivulos 8K RTSP|RTMP vivere et 8K in capite datas, quae novas ideas pro tincidunt et lusori proponerent requisitis disseremus quomodo VR capitis machinae 8K RTSP|RTMP fluentes notitias ex pluribus rationibus ludant;

1. ludius auxilium

convenientiam Primum, RTSP|RTMP ludio ludius indiget subsidio 8K solutionis video effusis. Hoc significat quod lusor potest 8K video decoquere et illud in ostentatione machinae quae 8K solutionem sustinet dicere supervacuum est.
decoding facultatem : Scaenicus indiget decoding facultatem habere potentem ad tractandum magnam copiam notitiarum in 8K video amnis. Hoc plerumque requirit lusorem ut algorithms decoding efficientibus utatur et functiones accelerationis ferrariae plene utatur (ut acceleratio GPU), quae requirit tincidunt ad sustentationem 8K decoctionis durae.

2. Network opus

Sed : 8K video streaming altissimam reticularis longitudinis requirit ad sustentationem real-time transmissionis. Fac spatium retis satis magnum est ad difficultates vitandas sicut pigri, morae vel buffering in playback.
stabilitas : Firmitas retis iunctio etiam gravissima est. Connexio retis inconstans causare potest ut video effusis interrumpere vel degradare in qualitate.

3. hardware iudicium

Processus et memoria: VR headsets 8K video rivos ludere, qui locum altissimum requiruntur in executione VR headsets.

4. Playback gradus

Lego RTSP ludio ludius: Accessus noster est utendi nativi RTSP|RTMP ludi Daniu Live SDK in modum decoctionis durae ut YUV vel RGB datae ad unitatem revocet Amplissima notitia, praesertim decocta, oportet exemplaria quam minimum reducere si condiciones permittunt.

Technical realization

Hic articulus accipit suggestum Android Unity3D RTSP|RTMP playback moduli Daniu Live SDK exemplum:

Satus ludens:


/*
 * SmartPlayerAndroidMono.cs
 * Author: daniusdk.com
 * QQ：89030985
 */
public void Play()
{
	if (is_running)
	{
		Debug.Log("已经在播放。。");   
		return;
	}
 
	//获取输入框的url
	string url = input_url_.text.Trim();
 
	if (!url.StartsWith("rtmp://") && !url.StartsWith("rtsp://"))
	{
		videoUrl = "rtsp://admin:[email protected]:554/h264/ch1/main/av_stream";
	}
	else
	{
		videoUrl = url;
	}
 
	OpenPlayer();
 
	if ( player_handle_ == 0 )
		return;
 
	NT_U3D_Set_Game_Object(player_handle_, game_object_);
 
	/* ++ 播放前参数配置可加在此处 ++ */
	int is_using_tcp = 0;        //TCP/UDP模式设置
	NT_U3D_SetRTSPTcpMode(player_handle_, is_using_tcp);
 
	int is_report = 0;
	int report_interval = 1;
	NT_U3D_SetReportDownloadSpeed(player_handle_, is_report, report_interval);  //下载速度回调
 
	NT_U3D_SetBuffer(player_handle_, play_buffer_time_);                        //设置buffer time
 
	NT_U3D_SetPlayerLowLatencyMode(player_handle_, is_low_latency_ ? 1 : 0);    //设置是否启用低延迟模式
 
	NT_U3D_SetMute(player_handle_, is_mute_ ? 1 : 0);                           //是否启动播放的时候静音
 
	NT_U3D_SetAudioVolume(player_handle_, cur_audio_volume_);                   //设置播放音量
 
	NT_U3D_SetVideoDecoderMode(player_handle_, is_hw_decode_ ? 1 : 0);          //设置H.264软硬解模式
 
	NT_U3D_SetVideoHevcDecoderMode(player_handle_, is_hw_decode_ ? 1 : 0);          //设置H.265软硬解模式
 
	int is_output = 1;
	int disable_use_image_planes = 0;
	bool is_supports_texture_format = SystemInfo.SupportsTextureFormat(TextureFormat.RG16);
	Debug.Log("is_supports_texture_format: " + is_supports_texture_format);
	int is_supported_multiple_format = is_supports_texture_format? 1:0;
	int max_images = 3;
	int buffer_pool_max_size = 0;
	NT_U3D_SetImageReaderOutput(player_handle_, is_output, disable_use_image_planes, is_supported_multiple_format, max_images, buffer_pool_max_size);  //硬解码image reader
 
	int is_fast_startup = 1;
	NT_U3D_SetFastStartup(player_handle_, is_fast_startup);                     //设置快速启动模式
 
	int rtsp_timeout = 10;
	NT_U3D_SetRTSPTimeout(player_handle_, rtsp_timeout);                        //设置RTSP超时时间
 
	int is_auto_switch_tcp_udp = 1;
	NT_U3D_SetRTSPAutoSwitchTcpUdp(player_handle_, is_auto_switch_tcp_udp);    //设置TCP/UDP模式自动切换
 
	int is_audiotrack = 1;
	NT_U3D_SetAudioOutputType(player_handle_, is_audiotrack);                   //设置音频输出模式: if 0: 自动选择; if with 1: audiotrack模式
 
	NT_U3D_SetUrl(player_handle_, videoUrl);
	/* -- 播放前参数配置可加在此处 -- */
 
	int flag = NT_U3D_StartPlay(player_handle_);
 
	if (flag  == DANIULIVE_RETURN_OK)
	{
		is_need_get_frame_ = true;
		Debug.Log("播放成功");
	}
	else
	{
		is_need_get_frame_ = false;
		Debug.LogError("播放失败");
	}
 
	is_running = true;  
}

Exsecutio respondens OpenPlayer est talis:


private void OpenPlayer()
{
	if ( java_obj_cur_activity_ == null )
	{
		Debug.LogError("getApplicationContext is null");
		return;
	}
 
	player_handle_ = NT_U3D_Open();
 
	if (player_handle_ != 0)
		Debug.Log("open success");
	else
		Debug.LogError("open fail");
}

Close Ludio ludius:


private void ClosePlayer()
{
	is_need_get_frame_ = false;
	is_need_init_texture_ = false;
 
	int flag = NT_U3D_StopPlay(player_handle_);
	if (flag == DANIULIVE_RETURN_OK)
	{
		Debug.Log("停止成功");
	}
	else
	{
		Debug.LogError("停止失败");
	}
 
	flag = NT_U3D_Close(player_handle_);
	if (flag == DANIULIVE_RETURN_OK)
	{
		Debug.Log("关闭成功");
	}
	else
	{
		Debug.LogError("关闭失败");
	}
 
	player_handle_ = 0;
 
	NT_U3D_UnInit();
 
	is_running = false;
	video_format_ = VideoFrame.FORMAT_UNKNOWN;
	video_width_ = 0;
	video_height_ = 0;
}

Renovare renovationem datam:


private void Update()
{
	if (!is_need_get_frame_)
		return;
 
	if (player_handle_ == 0)
		return;
 
	AndroidJavaObject u3d_video_frame_obj = NT_U3D_GetVideoFrame(player_handle_);
 
	if (u3d_video_frame_obj == null)
	{
		return;
	}
 
	VideoFrame converted_video_frame = ConvertToVideoFrame(u3d_video_frame_obj);
 
	if (converted_video_frame == null)
	{
		u3d_video_frame_obj.Call("release");
 
	   u3d_video_frame_obj = null;
	   return;
	}
 
	if (!is_need_init_texture_)
	{
		if (converted_video_frame.format_ != video_format_)
		{
			is_need_init_texture_ = true;
 
		}
		else if (converted_video_frame.width_ != video_width_
			|| converted_video_frame.height_ != video_height_
			|| converted_video_frame.stride0_ != y_row_bytes_
			|| converted_video_frame.stride1_ != u_row_bytes_
			|| converted_video_frame.stride2_ != v_row_bytes_)
		{
			is_need_init_texture_ = true;
		}
	}
 
	if (is_need_init_texture_)
	{
		if (InitYUVTexture(converted_video_frame))
		{
			is_need_init_texture_ = false;
		}
	}
 
	UpdateYUVTexture(converted_video_frame);
 
	converted_video_frame.java_frame_obj_ = null;
	converted_video_frame = null;
	u3d_video_frame_obj.Call("release");
	u3d_video_frame_obj = null;
}

Summatim

Si tincidunt VR indiget ad rivos 8K RTSP vel RTSP ludere, maximos habet ferramenta et retis requisita, ut aliquas provocationes in applicationibus agendis occurrat. Per probationem actualem, quest3 auricula, cum nostro RTSP|RTMP ludio coniuncta, consequi potest milli secundo gradu morae 8K video notitiarum playback in unitate ad usus missionum occurrentes praealtis exigentiis realibus temporis sicut in trutina potestate apud me singuli.

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