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• how can use openrtsp to change audio sample-rate ?

  10 septembre 2015, par Bilel Eljaamii

  I use openRTSP to get audio from my IP Camera, When I try to open it with Audacity or ffplayer (ffmpeg player) ffplay audio-PCMA-2 the audio speed was very high.

  I changed the sample rate to 8000 and I get a normal audio speed. I tried to change it the ffmpeg library but without any positive result.

  ffmpeg  -i video-H264-1 -i audio-PCMA-2.al  -strict experimental -sample_rate 8000 -f alaw -acodec aac -ab 64k -ar 44100 -f mpegts test.ts

  How can I use openrtsp to change the bit sample-rate ?
  the command wich i use to get the stream is

  ./openRTSP "rtsp://user:pass@IP_CAMERA/....."

• error convert sample rate from AV_SAMPLE_FMT_FLTP to AV_SAMPLE_FMT_S16

  10 avril 2013, par user1881371

  convert sample rate from AV_SAMPLE_FMT_FLTP to AV_SAMPLE_FMT_S16 and play the openAL, get the following error(http://joxi.ru/B_JkUdg5CbDrWhe9oNI)

  CONV_FUNC (AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16 (lrintf (* (const float *) pi * (1 << 15))))

  in file audioconvert.c

  my code

  swrContext = swr_alloc();
  
  av_opt_set_int(swrContext, "in_channel_layout",  cc->channel_layout, 0);
  
  av_opt_set_int(swrContext, "out_channel_layout", cc->channel_layout,  0);
  
  av_opt_set_int(swrContext, "in_sample_rate",     cc->sample_rate, 0);
  
  av_opt_set_int(swrContext, "out_sample_rate",    cc->sample_rate, 0);
  
  av_opt_set_sample_fmt(swrContext, "in_sample_fmt",  cc->sample_fmt, 0);
  
  av_opt_set_sample_fmt(swrContext, "out_sample_fmt", AV_SAMPLE_FMT_S16P,  0);
  
  swr_init(swrContext);
  
  
  
  uint8_t *output;
  
  int out_samples = (int)av_rescale_rnd(swr_get_delay(swrContext, 44100) + (int64_t)decoded_frame->nb_samples, 44100, 44100, AV_ROUND_UP);
  
  swr_convert(swrContext, &output, out_samples, (const uint8_t **)decoded_frame->extended_data, decoded_frame->nb_samples); //error
  
  alBufferData(BufID,AL_FORMAT_STEREO16,output, decsize,44100);

  may have other solutions ?

  may have other solutions ? I'm doing on the How to convert sample rate from AV_SAMPLE_FMT_FLTP to AV_SAMPLE_FMT_S16 ?

• Replace all remaining occurances of step/depth_minus1 and offset_plus1

  8 septembre 2015, par Hendrik Leppkes

  Replace all remaining occurances of step/depth_minus1 and offset_plus1
  

  • [DH] ffprobe.c
  • [DH] libavcodec/dpxenc.c
  • [DH] libavcodec/ffv1dec.c
  • [DH] libavcodec/ffv1enc.c
  • [DH] libavcodec/huffyuvenc.c
  • [DH] libavcodec/jpeg2000dec.c
  • [DH] libavcodec/libopenjpegdec.c
  • [DH] libavcodec/mjpegdec.c
  • [DH] libavcodec/tiffenc.c
  • [DH] libavcodec/utils.c
  • [DH] libavcodec/x86/lossless_videodsp_init.c
  • [DH] libavdevice/opengl_enc.c
  • [DH] libavfilter/drawutils.c
  • [DH] libavfilter/vf_atadenoise.c
  • [DH] libavfilter/vf_blend.c
  • [DH] libavfilter/vf_boxblur.c
  • [DH] libavfilter/vf_colorkey.c
  • [DH] libavfilter/vf_colorlevels.c
  • [DH] libavfilter/vf_cropdetect.c
  • [DH] libavfilter/vf_deband.c
  • [DH] libavfilter/vf_decimate.c
  • [DH] libavfilter/vf_extractplanes.c
  • [DH] libavfilter/vf_histogram.c
  • [DH] libavfilter/vf_idet.c
  • [DH] libavfilter/vf_lut.c
  • [DH] libavfilter/vf_mergeplanes.c
  • [DH] libavfilter/vf_noise.c
  • [DH] libavfilter/vf_psnr.c
  • [DH] libavfilter/vf_spp.c
  • [DH] libavfilter/vf_swapuv.c
  • [DH] libavfilter/vf_vectorscope.c
  • [DH] libavfilter/vf_waveform.c
  • [DH] libavfilter/x86/vf_yadif_init.c
  • [DH] libavformat/img2enc.c
  • [DH] libavformat/mxfenc.c
  • [DH] libavutil/pixdesc.c
  • [DH] libswscale/alphablend.c
  • [DH] libswscale/output.c
  • [DH] libswscale/swscale.c
  • [DH] libswscale/swscale_unscaled.c
  • [DH] libswscale/utils.c
  • [DH] libswscale/x86/swscale.c