Attempt to use RTMP instead of HLS

[kientux]

I'm trying to replace hls with rtmp in the sdk. Just to test, I change outputPath in setupOutputPath function in KFHLSWriter to my rtmp end point, change output format to flv and add bitstream filter aac_adtsoasc:

- (void) setupOutputFile {
//    NSString *outputPath = [_directoryPath stringByAppendingPathComponent:@"index.m3u8"];
    NSString *outputPath = @"rtmp://<rtmp-endpoint>/live/test";

    _outputFile = [[FFOutputFile alloc] initWithPath:outputPath options:@{kFFmpegOutputFormatKey: @"flv"}];

    FFBitstreamFilter *bitstreamFilter = [[FFBitstreamFilter alloc] initWithFilterName:@"h264_mp4toannexb"];
    FFBitstreamFilter *bitstreamFilterAAC = [[FFBitstreamFilter alloc] initWithFilterName:@"aac_adtstoasc"];
    [_outputFile addBitstreamFilter:bitstreamFilter];
    [_outputFile addBitstreamFilterAudio:bitstreamFilterAAC];
}

(I added addBitstreamFilterAudio: function in FFmpegWrapper so the filter aac_adtstoasc will be added only if codec_id is AV_CODEC_ID_AAC).

That's all I can do for now, the app can run without problem. But if I check the output file with ffmpeg:

ffmpeg -i test.flv

then here's the output:

[flv @ 0x7fe764001000] Could not find codec parameters for stream 1 (Audio: none, 0 channels): unknown codec
Consider increasing the value for the 'analyzeduration' and 'probesize' options
Input #0, flv, from 'test.flv':
  Duration: 00:00:14.38, start: 0.402000, bitrate: 1640 kb/s
    Stream #0:0: Video: h264 (Baseline), yuv420p(tv, smpte170m/bt709/bt709), 854x480, 29.97 tbr, 1k tbn, 2k tbc
    Stream #0:1: Audio: none, 0 channels

There's something wrong when encoding audio stream. Any ideas how to fix this?