更改为外置ffmpeg

解决javacv api不稳定导致jvm崩溃的问题
剔除 javacv 相关依赖 大幅缩减 jar 包大小
This commit is contained in:
shikong 2023-09-16 15:55:14 +08:00
parent fc85a0782d
commit d0ca8881c6
8 changed files with 123 additions and 216 deletions

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@ -40,105 +40,6 @@
<artifactId>zlmediakit-service</artifactId> <artifactId>zlmediakit-service</artifactId>
</dependency> </dependency>
<!-- https://mvnrepository.com/artifact/org.bytedeco/javacv -->
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>javacv</artifactId>
<version>1.5.8</version>
<exclusions>
<exclusion>
<groupId>org.openjfx</groupId>
<artifactId>javafx-graphics</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>javacpp</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>openblas</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>opencv</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>tesseract</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>flycapture</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>libdc1394</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>libfreenect</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>libfreenect2</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>librealsense</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>librealsense2</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>videoinput</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>artoolkitplus</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>flandmark</artifactId>
</exclusion>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>leptonica</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>javacpp</artifactId>
<version>1.5.8</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.bytedeco/ffmpeg -->
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>ffmpeg</artifactId>
<version>5.1.2-1.5.8</version>
<classifier>windows-x86_64</classifier>
<exclusions>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>javacpp</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>ffmpeg</artifactId>
<version>5.1.2-1.5.8</version>
<classifier>linux-x86_64</classifier>
<exclusions>
<exclusion>
<groupId>org.bytedeco</groupId>
<artifactId>javacpp</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/com.google.guava/guava --> <!-- https://mvnrepository.com/artifact/com.google.guava/guava -->
<dependency> <dependency>
<groupId>com.google.guava</groupId> <groupId>com.google.guava</groupId>
@ -210,6 +111,13 @@
<groupId>org.springframework</groupId> <groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId> <artifactId>spring-web</artifactId>
</dependency> </dependency>
<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-exec -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-exec</artifactId>
<version>1.3</version>
</dependency>
</dependencies> </dependencies>
<build> <build>

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@ -0,0 +1,22 @@
package cn.skcks.docking.gb28181.mocking.config.sip;
import lombok.Data;
import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;
@ConfigurationProperties(prefix = "ffmpeg-support")
@Configuration
@Data
public class FfmpegConfig {
private String ffmpeg;
private String ffprobe;
private Rtp rtp;
@Data
public static class Rtp {
private String input;
private String output;
private String logLevel = "fatal";
}
}

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@ -167,25 +167,29 @@ public class InviteRequestProcessor implements MessageProcessor {
String senderIp = request.getLocalAddress().getHostAddress(); String senderIp = request.getLocalAddress().getHostAddress();
SdpFactory sdpFactory = SdpFactory.getInstance(); SdpFactory sdpFactory = SdpFactory.getInstance();
SessionDescriptionImpl sessionDescription = new SessionDescriptionImpl(); SessionDescriptionImpl sessionDescription = new SessionDescriptionImpl();
sessionDescription.setVersion(sdpFactory.createVersion(0)); GB28181Description description = GB28181Description.Convertor.convert(sessionDescription);
description.setVersion(sdpFactory.createVersion(0));
// 目前只配置 ipv4 // 目前只配置 ipv4
sessionDescription.setOrigin(sdpFactory.createOrigin(channelId, 0, 0, ConnectionField.IN, Connection.IP4, senderIp)); description.setOrigin(sdpFactory.createOrigin(channelId, 0, 0, ConnectionField.IN, Connection.IP4, senderIp));
sessionDescription.setSessionName(gb28181Description.getSessionName()); description.setSessionName(gb28181Description.getSessionName());
sessionDescription.setConnection(sdpFactory.createConnection(ConnectionField.IN, Connection.IP4, senderIp)); description.setConnection(sdpFactory.createConnection(ConnectionField.IN, Connection.IP4, senderIp));
TimeField respTime = new TimeField(); TimeField respTime = new TimeField();
respTime.setZero(); respTime.setZero();
TimeDescription timeDescription = SdpFactory.getInstance().createTimeDescription(respTime); TimeDescription timeDescription = SdpFactory.getInstance().createTimeDescription(respTime);
sessionDescription.setTimeDescriptions(new Vector<>() {{ description.setTimeDescriptions(new Vector<>() {{
add(timeDescription); add(timeDescription);
}}); }});
String[] mediaTypeCodes = new String[]{"98","96"}; String[] mediaTypeCodes = new String[]{"98","96"};
MediaDescription respMediaDescription = SdpFactory.getInstance().createMediaDescription("video", port, 0, SdpConstants.RTP_AVP, mediaTypeCodes); MediaDescription respMediaDescription = SdpFactory.getInstance().createMediaDescription("video", port, 0, SdpConstants.RTP_AVP, mediaTypeCodes);
Arrays.stream(mediaTypeCodes).forEach((k)->{ Arrays.stream(mediaTypeCodes).forEach((k)->{
String v = MediaSdpHelper.RTPMAP.get(k); String v = MediaSdpHelper.RTPMAP.get(k);
mediaDescription.addAttribute((AttributeField) SdpFactory.getInstance().createAttribute(SdpConstants.RTPMAP, StringUtils.joinWith(Separators.SP,k,v))); respMediaDescription.addAttribute((AttributeField) SdpFactory.getInstance().createAttribute(SdpConstants.RTPMAP, StringUtils.joinWith(Separators.SP,k,v)));
}); });
respMediaDescription.addAttribute((AttributeField) SdpFactory.getInstance().createAttribute("sendonly", null)); respMediaDescription.addAttribute((AttributeField) SdpFactory.getInstance().createAttribute("sendonly", null));
GB28181Description description = GB28181Description.Convertor.convert(sessionDescription);
description.setMediaDescriptions(new Vector<>(){{
add(respMediaDescription);
}});
description.setSsrcField(gb28181Description.getSsrcField()); description.setSsrcField(gb28181Description.getSsrcField());
String transport = request.getTopmostViaHeader().getTransport(); String transport = request.getTopmostViaHeader().getTransport();
@ -225,7 +229,10 @@ public class InviteRequestProcessor implements MessageProcessor {
schedule[0] = scheduledExecutorService.schedule(subscriber::onComplete, 60 , TimeUnit.SECONDS); schedule[0] = scheduledExecutorService.schedule(subscriber::onComplete, 60 , TimeUnit.SECONDS);
// 推流 ack 事件订阅 // 推流 ack 事件订阅
subscribe.getAckSubscribe().addSubscribe(key, subscriber); subscribe.getAckSubscribe().addSubscribe(key, subscriber);
scheduledExecutorService.schedule(()->{
// 发送 sdp 响应 // 发送 sdp 响应
sender.sendResponse(senderIp, transport, (ignore, ignore2, ignore3) -> SipResponseBuilder.responseSdp(request, description)); sender.sendResponse(senderIp, transport, (ignore, ignore2, ignore3) -> SipResponseBuilder.responseSdp(request, description));
}, 1,TimeUnit.SECONDS);
} }
} }

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@ -15,6 +15,7 @@ import javax.sip.SipFactory;
import javax.sip.address.Address; import javax.sip.address.Address;
import javax.sip.address.SipURI; import javax.sip.address.SipURI;
import javax.sip.header.ContentTypeHeader; import javax.sip.header.ContentTypeHeader;
import javax.sip.header.MaxForwardsHeader;
import javax.sip.message.Response; import javax.sip.message.Response;
@Slf4j @Slf4j
@ -42,11 +43,13 @@ public class SipResponseBuilder {
messageFactory.setDefaultContentEncodingCharset(GB28181Constant.CHARSET); messageFactory.setDefaultContentEncodingCharset(GB28181Constant.CHARSET);
SIPResponse response = (SIPResponse)messageFactory.createResponse(Response.OK, request); SIPResponse response = (SIPResponse)messageFactory.createResponse(Response.OK, request);
SipFactory sipFactory = SipFactory.getInstance(); SipFactory sipFactory = SipFactory.getInstance();
ContentTypeHeader contentTypeHeader = sipFactory.createHeaderFactory().createContentTypeHeader("APPLICATION", "SDP"); ContentTypeHeader contentTypeHeader = sipFactory.createHeaderFactory().createContentTypeHeader("application", "sdp");
response.setContent(sdp.toString(), contentTypeHeader); response.setContent(sdp.toString(), contentTypeHeader);
SipURI sipURI = (SipURI) request.getRequestURI(); SipURI sipURI = (SipURI) request.getRequestURI();
SipURI uri = MessageHelper.createSipURI(sipURI.getUser(), StringUtils.joinWith(":", sipURI.getHost() + ":" + sipURI.getPort())); SipURI uri = MessageHelper.createSipURI(sipURI.getUser(), StringUtils.joinWith(":", sipURI.getHost() + ":" + sipURI.getPort()));
Address concatAddress = sipFactory.createAddressFactory().createAddress(uri); Address concatAddress = sipFactory.createAddressFactory().createAddress(uri);
MaxForwardsHeader maxForwardsHeader = MessageHelper.createMaxForwardsHeader(70);
response.setMaxForwards(maxForwardsHeader);
response.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress)); response.addHeader(sipFactory.createHeaderFactory().createContactHeader(concatAddress));
return response; return response;
} }

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@ -6,48 +6,45 @@ import cn.hutool.core.date.DateUtil;
import cn.hutool.core.util.URLUtil; import cn.hutool.core.util.URLUtil;
import cn.skcks.docking.gb28181.core.sip.message.subscribe.GenericSubscribe; import cn.skcks.docking.gb28181.core.sip.message.subscribe.GenericSubscribe;
import cn.skcks.docking.gb28181.mocking.config.sip.DeviceProxyConfig; import cn.skcks.docking.gb28181.mocking.config.sip.DeviceProxyConfig;
import cn.skcks.docking.gb28181.mocking.core.sip.executor.MockingExecutor;
import cn.skcks.docking.gb28181.mocking.core.sip.message.subscribe.SipSubscribe; import cn.skcks.docking.gb28181.mocking.core.sip.message.subscribe.SipSubscribe;
import cn.skcks.docking.gb28181.mocking.core.sip.response.SipResponseBuilder; import cn.skcks.docking.gb28181.mocking.core.sip.response.SipResponseBuilder;
import cn.skcks.docking.gb28181.mocking.core.sip.sender.SipSender; import cn.skcks.docking.gb28181.mocking.core.sip.sender.SipSender;
import cn.skcks.docking.gb28181.mocking.orm.mybatis.dynamic.model.MockingDevice; import cn.skcks.docking.gb28181.mocking.orm.mybatis.dynamic.model.MockingDevice;
import cn.skcks.docking.gb28181.mocking.service.ffmpeg.FfmpegSupportService;
import gov.nist.javax.sip.message.SIPRequest; import gov.nist.javax.sip.message.SIPRequest;
import lombok.RequiredArgsConstructor; import lombok.RequiredArgsConstructor;
import lombok.SneakyThrows; import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j; import lombok.extern.slf4j.Slf4j;
import org.apache.commons.exec.Executor;
import org.apache.commons.lang3.StringUtils; import org.apache.commons.lang3.StringUtils;
import org.bytedeco.ffmpeg.avcodec.AVPacket;
import org.bytedeco.ffmpeg.global.avcodec;
import org.bytedeco.ffmpeg.global.avutil;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.springframework.stereotype.Service; import org.springframework.stereotype.Service;
import javax.sip.message.Request; import javax.sip.message.Request;
import javax.sip.message.Response; import javax.sip.message.Response;
import java.io.IOException;
import java.nio.charset.StandardCharsets; import java.nio.charset.StandardCharsets;
import java.util.Date; import java.util.Date;
import java.util.HashMap; import java.util.HashMap;
import java.util.Optional; import java.util.Optional;
import java.util.concurrent.*; import java.util.concurrent.*;
import java.util.concurrent.atomic.AtomicBoolean;
@Slf4j @Slf4j
@Service @Service
@RequiredArgsConstructor @RequiredArgsConstructor
public class DeviceProxyService { public class DeviceProxyService {
private final MockingExecutor mockingExecutor;
private final DeviceProxyConfig proxyConfig; private final DeviceProxyConfig proxyConfig;
private final SipSubscribe subscribe; private final SipSubscribe subscribe;
private final ConcurrentHashMap<String, CompletableFuture<Void>> task = new ConcurrentHashMap<>(); private final ConcurrentHashMap<String, Executor> task = new ConcurrentHashMap<>();
private final SipSender sender; private final SipSender sender;
private final FfmpegSupportService ffmpegSupportService;
public synchronized void proxyVideo2Rtp(String callId, MockingDevice device, Date startTime, Date endTime, String rtpAddr, int rtpPort) { public synchronized void proxyVideo2Rtp(String callId, MockingDevice device, Date startTime, Date endTime, String rtpAddr, int rtpPort) {
Optional.ofNullable(task.get(device.getDeviceCode())).ifPresent(task->{
task.getWatchdog().destroyProcess();
});
String fromUrl = URLUtil.completeUrl(proxyConfig.getUrl(), "/video"); String fromUrl = URLUtil.completeUrl(proxyConfig.getUrl(), "/video");
HashMap<String, String> map = new HashMap<>(3); HashMap<String, String> map = new HashMap<>(3);
String deviceCode = device.getDeviceCode(); String deviceCode = device.getDeviceCode();
@ -89,101 +86,19 @@ public class DeviceProxyService {
log.info("bye 订阅结束 {}", key); log.info("bye 订阅结束 {}", key);
subscribe.getByeSubscribe().delPublisher(key); subscribe.getByeSubscribe().delPublisher(key);
Optional.ofNullable(task.get(device.getDeviceCode())).ifPresent(task -> { Optional.ofNullable(task.get(device.getDeviceCode())).ifPresent(task -> {
task.cancel(true); task.getWatchdog().destroyProcess();
}); });
task.remove(device.getDeviceCode()); task.remove(device.getDeviceCode());
} }
}; };
final String finalFromUrl = fromUrl;
ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
CompletableFuture<Void> future = CompletableFuture.runAsync(() -> {
pushRtp(finalFromUrl, toUrl, time);
// 推送结束后 60 秒内未收到 bye 则结束订阅 释放内存
scheduledExecutorService.schedule(subscriber::onComplete, time + 60 , TimeUnit.SECONDS);
}, mockingExecutor.sipTaskExecutor());
task.put(device.getDeviceCode(), future);
subscribe.getByeSubscribe().addSubscribe(key, subscriber); subscribe.getByeSubscribe().addSubscribe(key, subscriber);
ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
task.put(device.getDeviceCode(), pushRtpTask( fromUrl, toUrl, time + 60));
scheduledExecutorService.schedule(subscriber::onComplete, time + 60, TimeUnit.SECONDS);
} }
@SneakyThrows @SneakyThrows
public void pushRtp(String fromUrl, String toUrl, long time) { public Executor pushRtpTask(String fromUrl, String toUrl, long time){
log.info("创建推流任务 fromUrl {}, toUrl {}, time: {}", fromUrl, toUrl, time); return ffmpegSupportService.pushToRtp("http://10.10.10.200:5080/live/test.live.flv", toUrl, time, TimeUnit.SECONDS);
// FFmpeg 调试日志
// FFmpegLogCallback.set();
FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(fromUrl);
// 30秒超时
grabber.setOption("stimeout", "30000000");
grabber.start();
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(toUrl, grabber.getImageWidth(), grabber.getImageHeight(), grabber.getAudioChannels());
recorder.setInterleaved(true);
recorder.setVideoOption("preset", "ultrafast");
recorder.setVideoOption("tune", "zerolatency");
recorder.setVideoOption("crf", "25");
// recorder.setMaxDelay(500);
recorder.setGopSize((int) (grabber.getFrameRate() * 2));
recorder.setFrameRate(grabber.getFrameRate());
recorder.setSampleRate(grabber.getSampleRate());
recorder.setOption("flvflags", "no_duration_filesize");
recorder.setOption("movflags","frag_keyframe+empty_moov");
if (grabber.getAudioChannels() > 0) {
recorder.setAudioChannels(grabber.getAudioChannels());
recorder.setAudioBitrate(grabber.getAudioBitrate());
recorder.setAudioCodec(grabber.getAudioCodec());
}
recorder.setFrameRate(grabber.getVideoFrameRate());
recorder.setVideoBitrate(grabber.getVideoBitrate());
// recorder.setVideoCodec(grabber.getVideoCodec());
recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P); // 视频源数据yuv
recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC); // 设置音频压缩方式
recorder.setFormat("rtp_mpegts");
recorder.setVideoOption("threads", String.valueOf(Runtime.getRuntime().availableProcessors())); // 解码线程数
recorder.start(grabber.getFormatContext());
grabber.flush();
ScheduledExecutorService scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
AtomicBoolean record = new AtomicBoolean(true);
scheduledExecutorService.schedule(() -> {
log.info("到达结束时间, 结束推送 fromUrl: {}, toUrl: {}", fromUrl, toUrl);
record.set(false);
}, time, TimeUnit.SECONDS);
try {
long begin = System.currentTimeMillis();
AVPacket k;
long dts = 0;
long pts = 0;
int no_frame_index = 0;
while (record.get() && no_frame_index < 10 ) {
k = grabber.grabPacket();
if(k == null || k.size() <= 0 || k.data() == null) {
//空包记录次数跳过
no_frame_index++;
continue;
}
// 获取到的pkt的dtspts异常将此包丢弃掉
if (k.dts() == avutil.AV_NOPTS_VALUE && k.pts() == avutil.AV_NOPTS_VALUE || k.pts() < dts) {
avcodec.av_packet_unref(k);
continue;
}
// 记录上一pkt的dtspts
dts = k.dts();
pts = k.pts();
recorder.recordPacket(k);
avcodec.av_packet_unref(k);
long end = System.currentTimeMillis();
long sleep_real = (long) ((1000 / grabber.getFrameRate()) - (end - begin));
begin = end;
if (sleep_real > 0) {
Thread.sleep(sleep_real);
}
}
grabber.close();
recorder.close();
} catch (IOException e) {
throw new RuntimeException(e);
}
log.info("结束推送 fromUrl: {}, toUrl: {}", fromUrl, toUrl);
} }
} }

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@ -0,0 +1,39 @@
package cn.skcks.docking.gb28181.mocking.service.ffmpeg;
import cn.skcks.docking.gb28181.mocking.config.sip.FfmpegConfig;
import lombok.RequiredArgsConstructor;
import lombok.SneakyThrows;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.exec.*;
import org.apache.commons.lang3.StringUtils;
import org.springframework.stereotype.Service;
import java.util.concurrent.TimeUnit;
@Slf4j
@Service
@RequiredArgsConstructor
public class FfmpegSupportService {
private final FfmpegConfig ffmpegConfig;
@SneakyThrows
public Executor pushToRtp(String input, String output, long time, TimeUnit unit){
FfmpegConfig.Rtp rtp = ffmpegConfig.getRtp();
String inputParam = StringUtils.joinWith(" ", rtp.getInput(), input);
log.info("视频输入参数 {}", inputParam);
String outputParam = StringUtils.joinWith(" ", rtp.getOutput(), output);
log.info("视频输出参数 {}", outputParam);
String logLevelParam = StringUtils.joinWith(" ","-loglevel", rtp.getLogLevel());
String command = StringUtils.joinWith(" ", ffmpegConfig.getFfmpeg(), inputParam, outputParam, logLevelParam);
CommandLine commandLine = CommandLine.parse(command);
DefaultExecuteResultHandler resultHandler = new DefaultExecuteResultHandler();
Executor executor = new DefaultExecutor();
ExecuteWatchdog watchdog = new ExecuteWatchdog(unit.toMillis(time));
executor.setExitValue(0);
executor.setWatchdog(watchdog);
executor.execute(commandLine, resultHandler);
return executor;
}
}

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@ -57,7 +57,8 @@ gb28181:
ip: 10.10.10.20 ip: 10.10.10.20
# ip: 192.168.10.32 # ip: 192.168.10.32
# ip: 192.168.3.12 # ip: 192.168.3.12
port: 5060 # port: 5060
port: 5061
password: 123456 password: 123456
domain: 4405010000 domain: 4405010000
id: 44050100002000000001 id: 44050100002000000001
@ -71,4 +72,10 @@ media:
secret: 4155cca6-2f9f-11ee-85e6-8de4ce2e7333 secret: 4155cca6-2f9f-11ee-85e6-8de4ce2e7333
proxy: proxy:
device: device:
url: http://192.168.2.3:18183 url: http://10.10.10.20:18186
ffmpeg-support:
ffmpeg: D:\Soft\Captura\ffmpeg\ffmpeg.exe
ffprobe: D:\Soft\Captura\ffmpeg\ffprobe.exe
rtp:
input: -re -i
output: -vcodec copy -acodec aac -f rtp_mpegts

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@ -24,8 +24,8 @@ spring:
username: root username: root
password: 123456a password: 123456a
url: jdbc:mysql://192.168.1.241:3306/gb28181_docking_platform?createDatabaseIfNotExist=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai url: jdbc:mysql://192.168.1.241:3306/gb28181_docking_platform?createDatabaseIfNotExist=true&characterEncoding=UTF-8&serverTimezone=Asia/Shanghai
# profiles: profiles:
# active: local active: local
gb28181: gb28181:
# 作为28181服务器的配置 # 作为28181服务器的配置
@ -70,3 +70,9 @@ media:
proxy: proxy:
device: device:
url: http://192.168.2.3:18183 url: http://192.168.2.3:18183
ffmpeg-support:
ffmpeg: /usr/bin/ffmpeg
ffprobe: /usr/bin/ffprobe
rtp:
input: -re -i
output: -vcodec h264 -acodec aac -f rtp_mpegts