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• How to using every 5 sec generate video output File Path to Encode with RTMP Formate write data in ios ? [on hold]

  16 juillet 2015, par Sandeep Joshi

  (void) segmentRecording:(NSTimer*)timer {
  
  if (!shouldBeRecording) {
  
      [timer invalidate];
  
  }
  
  AVAssetWriter *tempAssetWriter = self.assetWriter;
  
  AVAssetWriterInput *tempAudioEncoder = self.audioEncoder;
  
  AVAssetWriterInput *tempVideoEncoder = self.videoEncoder;
  
  self.assetWriter = queuedAssetWriter;
  
  self.audioEncoder = queuedAudioEncoder;
  
  self.videoEncoder = queuedVideoEncoder;
  
  NSLog(@"Switching encoders");
  
  
  
  dispatch_async(segmentingQueue, ^{
  
      if (tempAssetWriter.status == AVAssetWriterStatusWriting) {
  
          @try {
  
              [tempAudioEncoder markAsFinished];
  
              [tempVideoEncoder markAsFinished];
  
              [tempAssetWriter finishWritingWithCompletionHandler:^{
  
                  if (tempAssetWriter.status == AVAssetWriterStatusFailed) {
  
                      [self showError:tempAssetWriter.error];
  
                  } else {
  
                      [self uploadLocalURL:tempAssetWriter.outputURL];
  
                  }
  
              }];
  
          }
  
          @catch (NSException *exception) {
  
              NSLog(@"Caught exception: %@", [exception description]);
  
              //[BugSenseController logException:exception withExtraData:nil];
  
          }
  
      }
  
      self.segmentCount++;
  
      if (self.readyToRecordAudio && self.readyToRecordVideo) {
  
          NSError *error = nil;
  
          self.queuedAssetWriter = [[AVAssetWriter alloc] initWithURL:[OWUtilities urlForRecordingSegmentCount:segmentCount basePath:self.basePath] fileType:(NSString *)kUTTypeMPEG4 error:&error];
  
          if (error) {
  
              [self showError:error];
  
          }
  
          self.queuedVideoEncoder = [self setupVideoEncoderWithAssetWriter:self.queuedAssetWriter formatDescription:videoFormatDescription bitsPerSecond:videoBPS];
  
          self.queuedAudioEncoder = [self setupAudioEncoderWithAssetWriter:self.queuedAssetWriter formatDescription:audioFormatDescription bitsPerSecond:audioBPS];
  
          //NSLog(@"Encoder switch finished");
  
      }
  
  });}
  
  
  
  
  
  
  
  (void) uploadLocalURL:(NSURL*)url {
  
  NSLog(@"upload local url: %@", url);
  
  NSString *inputPath = [url path];
  
  NSString *outputPath = [inputPath stringByReplacingOccurrencesOfString:@".mp4" withString:@".ts"];
  
  NSString *outputFileName = [outputPath lastPathComponent];
  
  NSDictionary *options = @{kFFmpegOutputFormatKey: @"mpegts"};
  
  NSLog(@"%@ conversion...", outputFileName);
  
  [ffmpegWrapper convertInputPath:[url path] outputPath:outputPath options:options progressBlock:nil completionBlock:^(BOOL success, NSError *error) {
  
      if (success) {
  
          if (!isRtmpConnected) {
  
              isRtmpConnected = [rtmp openWithURL:HOST_URL enableWrite:YES];
  
          }
  
          isRtmpConnected = [rtmp isConnected];
  
  
  
          if (isRtmpConnected) {
  
  
  
              NSData *video = [NSData dataWithContentsOfURL:[NSURL URLWithString:outputPath]];
  
              NSUInteger length = [video length];
  
              NSUInteger chunkSize = 1024 * 5;;
  
              NSUInteger offset = 0;
  
              NSLog(@"original video length: %lu \n chunkSize : %lu", length,chunkSize);
  
            // Let's split video to small chunks to publish to media server
  
              do {
  
                  NSUInteger thisChunkSize = length - offset > chunkSize ? chunkSize : length - offset;
  
                  NSData* chunk = [NSData dataWithBytesNoCopy:(char *)[video bytes] + offset
  
                                                       length:thisChunkSize
  
                                                 freeWhenDone:NO];
  
                  offset += thisChunkSize;
  
  
  
                  // Write new chunk to rtmp server
  
                  NSLog(@"%lu", (unsigned long)[rtmp write:chunk]);
  
                  sleep(1);
  
              } while (offset < length);
  
          }else{
  
              [rtmp close];
  
          }
  
  
  
  
  
      } else {
  
          NSLog(@"conversion error: %@", error.userInfo);
  
      }
  
  }];}

  This code use for live streaming for send data using RTMP Wrapper.
  Not write in Socket properly because every 5 second to generate different file output file.

  This is proper way ?

  I have no idea how to get NSData in proper way.

  Please help me .

• Compiling ffmpeg for iOS and gas-preprocessor.pl

  16 mai 2017, par user500

  I want to compile ffmpeg for iOS. I did it a few times before. But now I’m on clean new Mavericks and on configure I’m always getting

  Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
  
  Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
  
  GNU assembler not found, install gas-preprocessor
  
  
  
  If you think configure made a mistake, make sure you are using the latest
  
  version from Git.  If the latest version fails, report the problem to the
  
  ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
  
  Include the log file "config.log" produced by configure as this will help
  
  solving the problem.

  I have current Xcode installed. Also brews. And current gas-preprocessor.pl (https://github.com/yuvi/gas-preprocessor) in usr/bin and also in usr/local/bin.

  ---

  On perl /usr/bin/gas-preprocessor.pl gcc I’m getting Unrecognized input filetype at /usr/bin/gas-preprocessor.pl line 33.

  ---

  This config works :

  ./configure \
  
  --extra-cflags='-arch arm64 -mios-version-min=7.0 -mthumb' \
  
  --extra-ldflags='-arch arm64 -mios-version-min=7.0' \
  
  --enable-cross-compile \
  
  --arch=arm64 \
  
  --target-os=darwin \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk \
  
  --prefix=arm64 \
  
  --disable-doc \
  
  --disable-shared \
  
  --disable-everything \
  
  --enable-static \
  
  --enable-pic \
  
  --disable-muxers \
  
  --enable-muxer=flv \
  
  --disable-demuxers \
  
  --enable-demuxer=h264 \
  
  --enable-demuxer=pcm_s16le \
  
  --disable-devices \
  
  --disable-parsers \
  
  --enable-parser=h264 \
  
  --disable-encoders \
  
  --enable-encoder=aac \
  
  --disable-decoders \
  
  --enable-decoder=h264 \
  
  --enable-decoder=pcm_s16le \
  
  --disable-protocols \
  
  --enable-protocol=rtmp \
  
  --disable-filters \
  
  --disable-bsfs

  ---

  This config throws error above (GNU assembler not found, install gas-preprocessor) :

  ./configure \
  
  --cpu=cortex-a8 \
  
  --extra-cflags='-arch armv7 -mios-version-min=7.0 -mthumb' \
  
  --extra-ldflags='-arch armv7 -mios-version-min=7.0' \
  
  --enable-cross-compile \
  
  --arch=armv7 \
  
  --target-os=darwin \
  
  --cc=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang \
  
  --sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.0.sdk \
  
  --prefix=armv7 \
  
  --disable-doc \
  
  --disable-shared \
  
  --disable-everything \
  
  --enable-static \
  
  --enable-pic \
  
  --disable-muxers \
  
  --enable-muxer=flv \
  
  --disable-demuxers \
  
  --enable-demuxer=h264 \
  
  --enable-demuxer=pcm_s16le \
  
  --disable-devices \
  
  --disable-parsers \
  
  --enable-parser=h264 \
  
  --disable-encoders \
  
  --enable-encoder=aac \
  
  --disable-decoders \
  
  --enable-decoder=h264 \
  
  --enable-decoder=pcm_s16le \
  
  --disable-protocols \
  
  --enable-protocol=rtmp \
  
  --disable-filters \
  
  --disable-bsfs

• RTSP to HLS conversion with error on some devices

  2 septembre 2024, par Wallace Ketler

  I'm trying to convert, on a node server, RTSP IP camera devices to HLS to run livestreams on the web. The following code works well for some RTSP devices, but for others I encounter problems.

  


     function startLive(rtspUrl, outputDir, id_local, id_camera) {
        return new Promise((resolve, reject) => {
            const processKey = `${id_local}_${id_camera}`;
            if (ffmpegProcesses[processKey]) {
                return reject(new Error('Conversão já está em andamento para esta câmera'));
            }
        
            const process = ffmpeg(rtspUrl)
                .inputOptions([
                    '-rtsp_transport', 'tcp',
                    '-fflags', 'nobuffer',
                    '-max_delay', '1000000',
                    '-analyzeduration', '1000000',
                    '-probesize', '1000000',
                    '-flush_packets', '1',
                    '-avioflags', 'direct'
                ])
                .outputOptions([
                    '-c:v', 'libx264',
                    '-preset', 'ultrafast',
                    '-tune', 'zerolatency',
                    '-c:a', 'aac',
                    '-hls_time', '10',
                    '-hls_flags', 'delete_segments',
                    '-hls_list_size', '5',
                    '-hls_wrap', '5',
                    '-strict', '-2'
                ])
                .output(path.join(outputDir, 'stream.m3u8'))
                .on('start', (commandLine) => {
                    console.log('Spawned FFmpeg with command: ' + commandLine);
                })
                .on('stderr', (stderrLine) => {
                    console.log('FFmpeg stderr: ' + stderrLine);
                })
                .on('end', () => {
                    console.log('Conversão concluída');
                    delete ffmpegProcesses[processKey]; 
                    resolve();
                })
                .on('error', (err, stdout, stderr) => {
                    console.error('Erro na conversão', err);
                    console.error('FFmpeg stdout:', stdout);
                    console.error('FFmpeg stderr:', stderr);
                    delete ffmpegProcesses[processKey]; 
                    reject(err);
                })
                .run();
    
            ffmpegProcesses[processKey] = process; 
        });
    }


  


  When the conversion succeeds, it continues indefinitely with the logs :

  


  FFmpeg stderr: frame=   61 fps= 48 q=13.0 size=N/A time=00:00:02.03 bitrate=N/A dup=60 drop=0 speed= 1.6x    
FFmpeg stderr: frame=   75 fps= 42 q=17.0 size=N/A time=00:00:02.52 bitrate=N/A dup=62 drop=0 speed=1.41x    
FFmpeg stderr: frame=   91 fps= 39 q=16.0 size=N/A time=00:00:03.04 bitrate=N/A dup=65 drop=0 speed=1.31x    
FFmpeg stderr: frame=  108 fps= 38 q=15.0 size=N/A time=00:00:03.60 bitrate=N/A dup=68 drop=0 speed=1.27x    
FFmpeg stderr: frame=  121 fps= 36 q=24.0 size=N/A time=00:00:04.03 bitrate=N/A dup=70 drop=0 speed=1.21x    
FFmpeg stderr: frame=  138 fps= 36 q=16.0 size=N/A time=00:00:04.60 bitrate=N/A dup=73 drop=0 speed= 1.2x    
FFmpeg stderr: frame=  152 fps= 35 q=17.0 size=N/A time=00:00:05.08 bitrate=N/A dup=75 drop=0 speed=1.17x    
FFmpeg stderr: frame=  168 fps= 35 q=16.0 size=N/A time=00:00:05.60 bitrate=N/A dup=78 drop=0 speed=1.15x    
FFmpeg stderr: frame=  183 fps= 34 q=21.0 size=N/A time=00:00:06.11 bitrate=N/A dup=80 drop=0 speed=1.13x    
FFmpeg stderr: frame=  198 fps= 34 q=16.0 size=N/A time=00:00:06.60 bitrate=N/A dup=83 drop=0 speed=1.12x    
FFmpeg stderr: frame=  215 fps= 33 q=16.0 size=N/A time=00:00:07.16 bitrate=N/A dup=86 drop=0 speed=1.11x    
FFmpeg stderr: frame=  230 fps= 33 q=16.0 size=N/A time=00:00:07.66 bitrate=N/A dup=88 drop=0 speed= 1.1x    
FFmpeg stderr: frame=  246 fps= 33 q=19.0 size=N/A time=00:00:08.20 bitrate=N/A dup=91 drop=0 speed= 1.1x    


  


  And with the segments saved in the folder configured as output. But for certain devices, after creating the stream.m3u8 file and saving the first segment, the conversion is considered finished and falls into .on('end') . The error log is as follows :

  


  FFmpeg stderr: frame=    0 fps=0.0 q=0.0 size=N/A time=00:00:01.12 bitrate=N/A speed=2.08x    
FFmpeg stderr: [hls @ 0x55e00dfc4380] Opening 'my_path/stream0.ts' for writing
FFmpeg stderr: [hls @ 0x55e00dfc4380] Opening 'my_path/stream.m3u8.tmp' for writing
FFmpeg stderr: frame=    0 fps=0.0 q=0.0 Lsize=N/A time=00:00:01.37 bitrate=N/A speed= 2.5x    
FFmpeg stderr: video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
FFmpeg stderr: [aac @ 0x55e00dfff840] Qavg: 65536.000
FFmpeg stderr: 
Conversão concluída


  


  The muxing overhead: unknown only appears when the error occurs and the conversion is complete.

  


  I've already tried changing the video and audio encoders, as well as the various input and output parameters of the conversion. I also tried updating ffmpeg (it's already on the latest version, using fluent-ffmpeg, "fluent-ffmpeg": "^2.1.3",)

  


  I would like to understand why this happens on some devices and how to fix it. Thanks.