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  • FFmpeg : How to apply volume filter fast in ffmpeg

    29 novembre 2018, par Prashant_Sarin

    i am using below code for applying volume filter in ffmpeg, but its taking too long.Let’s say the audio itself is for 5 minutes then applying this filter takes 3 minutes. Can someone help to speed up the process.

    my command is as :

    var command = "-i $audioPath -af volume=enable='between(t,5,10)':volume=0.25,volume=enable='between(t,15,20)':volume=0.25 $outputFile"

    logs are :

    2018-11-29 15:17:16.912 17250-17250/com.example.prashants.ffmpegtest 
    
D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress - 
    
---AudioVolume---- video:0kB audio:3030kB subtitle:0kB other streams:0kB 
    
global headers:0kB muxing overhead: 1.236199%
    
2018-11-29 15:17:16.913 17250-17250/com.example.prashants.ffmpegtest 
    
D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress - 
    
---AudioVolume---- bench: utime=168.977s
    
2018-11-29 15:17:16.915 17250-17250/com.example.prashants.ffmpegtest 
    
D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress - 
    
---AudioVolume---- bench: maxrss=65116kB
    
2018-11-29 15:17:16.917 17250-17250/com.example.prashants.ffmpegtest 
    
D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress - 
    
---AudioVolume---- [aac @ 0xaf5e4400] Qavg: 15833.816
    
2018-11-29 15:17:16.920 17250-17250/com.example.prashants.ffmpegtest 
    
D/com.example.prashants.ffmpegtest.service.AudioOverlayService: AudioVolume 
    
success--------- -benchmark -threads 4 -i 
    
/storage/emulated/0/FFmpegTest/looped.m4a -af 
    
volume=enable='between(t,5,10)+between(t,15,20)':volume=0.25:eval=frame 
    
/storage/emulated/0/FFmpegTest/filtered_audio.m4a

    that’s the log from my android studio console

  • FFmpeg : Audio Filter taking too long

    29 novembre 2018, par Prashant_Sarin

    I am using the code below to apply a volume filter in ffmpeg, but it is taking too long. A 5-minute audiofile filter takes 3 minutes. Can someone give advice on how I can speed it up.

    My command is :

    var command = "-i $audioPath -af volume=enable='between(t,5,10)+between(t,15,20)':volume=0.25:eval=frame $outputFile"

    Logs are :

    2018-11-29 16:58:22.487 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress -    ---AudioVolume---- size=    1537kB time=00:01:40.41 bitrate= 125.4kbits/s speed=1.13x    
    
2018-11-29 16:58:22.489 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress ----AudioVolume---- video:0kB audio:1518kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.260607%
    
2018-11-29 16:58:22.490 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress ----AudioVolume---- bench: utime=86.707s
    
2018-11-29 16:58:22.491 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress ----AudioVolume---- bench: maxrss=65792kB
    
2018-11-29 16:58:22.492 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: onProgress ----AudioVolume---- [aac @ 0xb1ce4400] Qavg: 17415.965 
    
2018-11-29 16:58:22.493 23387-23387/com.example.prashants.ffmpegtest D/com.example.prashants.ffmpegtest.service.AudioOverlayService: AudioVolume success--------- -benchmark -threads 4 -i /storage/emulated/0/FFmpegTest/looped.m4a -af volume=enable='between(t,5,10)+between(t,15,20)':volume=0.25:eval=frame 
    
/storage/emulated/0/FFmpegTest/filtered_audio.m4a

  • Intel QuickSync error : Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    30 novembre 2018, par Arie Syamsudin

    I want to make IPTV with a topology like this :

    Restream / source -----> IPTV server -----> User

    The problem at the moment is the question of bandwidth that is still large.

    Finally I announced by IPTV software providers to transcode with Intel QuickSync video and FFmpeg.

    I followed the steps given by the software provider at the following link :
    http://www.ezhometech.com/document/intel_ffmpeg.txt

    Which comes from the link below :
    https://www.intel.com/content/dam/www/public/us/en/documents/white-paper...

    I installed IPTV software on a laptop with an Intel processor, chipset and VGA.

    [root@iptv ffmpeg-4.1]# **lspci**
    
00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09)
    
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)
    
00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04)
    
00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 05)
    
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 05)
    
00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b5)
    
00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b5)
    
00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 05)
    
00:1f.0 ISA bridge: Intel Corporation HM65 Express Chipset Family LPC Controller (rev 05)
    
00:1f.2 SATA controller: Intel Corporation 6 Series/C200 Series Chipset Family 6 port Mobile SATA AHCI Controller (rev 05)
    
00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 05)
    
01:00.0 Ethernet controller: Qualcomm Atheros AR8152 v2.0 Fast Ethernet (rev c1)
    
02:00.0 Network controller: Qualcomm Atheros AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
    

    
[root@iptv ffmpeg-4.1]# **lspci -nn -s 0:02.0**
    
00:02.0 VGA compatible controller [0300]: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09)

    but when I do a transcoding test, an error always appears :
    Error initializing output stream 0:0 — Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height.

    Error details :
    https://paste.fedoraproject.org/paste/vp9XIzbeOuyXRuLBlLfSng

    FFmpeg log :

    ./ffmpeg  -hwaccel qsv -i http://premium-play.org:8000/domm0H56Cj/q3ODLP6C16/2826 -vcodec h264_qsv -acodec copy -b:v 1200K -f mpegts udp://127.0.0.1:9011?pkt_size=1316
    
ffmpeg version 3.2.12 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 4.8.5 (GCC) 20150623 (Red Hat 4.8.5-28)
    
  configuration: --enable-libmfx --enable-nonfree
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
Input #0, mpegts, from 'http://premium-play.org:8000/domm0H56Cj/q3ODLP6C16/2826':
    
  Duration: N/A, start: 30200.274878, bitrate: N/A
    
  Program 1
    
    Metadata:
    
      service_name    : Service01
    
      service_provider: FFmpeg
    
    Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1920x1080 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
    
    Stream #0:1[0x101]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 125 kb/s
    
libva info: VA-API version 1.0.0
    
libva info: va_getDriverName() returns 0
    
libva info: User requested driver 'iHD'
    
libva info: Trying to open /opt/intel/mediasdk/lib64/iHD_drv_video.so
    
libva info: Found init function __vaDriverInit_1_0
    
libva info: va_openDriver() returns 0
    
[h264_qsv @ 0x2a89500] Selected ratecontrol mode is not supported by the QSV runtime. Choose a different mode.
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_qsv))
    
  Stream #0:1 -> #0:1 (copy)
    
Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

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