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• FFmpeg with Nvidia GPU - full HW transcode with 50i to 50p deinterlacing

  5 janvier 2018, par Jernej Stopinšek

  I’m trying to do a full hardware transcode of an udp stream to hls
  with 50i to 50p deinterlacing.

  I’m using ffmpeg and Nvidia GPU.

  Since HLS requires deinterlacing

  https://developer.apple.com/library/content/documentation/General/Reference/HLSAuthoringSpec/Requirements.html

  I would like to deinterlace an interlaced source stream and preserve
  as much smooth motion and picture quality as possible.

  My hardware, software and driver info :

  GPU : Tesla P100-PCIE-12GB
  Nvidia Driver Version : 387.26
  Cuda compilation tools, release 9.1, V9.1.85
  FFmpeg from git on 20171218
  
  

  ffmpeg version N-89520-g3f88744067 Copyright (c) 2000-2017 the FFmpeg
  developers built with gcc 6.3.0 (Debian 6.3.0-18) 20170516
  configuration : —enable-gpl
  —enable-cuda-sdk —enable-libx264 —enable-libx265 —enable-nonfree —enable-libnpp —enable-opengl —enable-opencl —enable-libfreetype —enable-openssl —enable-libzvbi —enable-libfontconfig —enable-libfreetype —enable-libfribidi —extra-cflags=-I/usr/local/cuda/include —extra-ldflags=-L/usr/local/cuda/lib64 —arch=x86_64

  libavutil 56. 6.100 / 56. 6.100
  libavcodec 58. 8.100 / 58.
  8.100
  libavformat 58. 3.100 / 58. 3.100
  libavdevice 58. 0.100 / 58. 0.100
  libavfilter 7. 7.100 / 7. 7.100
  libswscale 5.
  0.101 / 5. 0.101
  libswresample 3. 0.101 / 3. 0.101
  libpostproc 55. 0.100 / 55. 0.100

  Input stream info :

  ffmpeg -t 00:05:00 -i udp://xxx.xxx.xxx.xxx:xxxx -map 0:0 -vf idet -c rawvideo -y -f rawvideo /dev/null

  ---

  Input #0, mpegts, from ’udp ://xxx.xxx.xxx.xxx:xxxx’ :
  Duration :
  N/A, start : 49634.159411, bitrate : N/A
  Program xxxxx
  Metadata : service_name :
  service_provider : Stream
  #0:0[0x44d] : Video : h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 50 tbr, 90k
  tbn, 50 tbc
  Stream #0:10x19de : Audio : mp2 ([3][0][0][0] /
  0x0003), 48000 Hz, stereo, s16p, 192 kb/s
  Stream
  #0:20x19e1 : Subtitle : dvb_subtitle ([6][0][0][0] / 0x0006)
  

  Output #0, rawvideo, to ’/dev/null’ :
  Metadata :
  encoder :
  Lavf58.3.100
  Stream #0:0 : Video : rawvideo (I420 / 0x30323449),
  yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 622080 kb/s, 25 fps, 25
  tbn, 25 tbc
  Metadata :
  encoder : Lavc58.8.100 rawvideo
  frame= 7538 fps= 25 q=-0.0 Lsize=22896675kB time=00:05:01.52
  bitrate=622080.0kbits/s dup=38 drop=0 speed=1.02x
  video:22896675kB audio:0kB subtitle:0kB other streams:0kB global
  headers:0kB muxing overhead : 0.000000%
  [Parsed_idet_0 @
  0x56370b3c5080] Repeated Fields : Neither : 7458 Top : 24 Bottom : 18
  [Parsed_idet_0 @ 0x56370b3c5080] Single frame detection : TFF : 281 BFF :
  13 Progressive : 5639 Undetermined : 1567
  [Parsed_idet_0 @
  0x56370b3c5080] Multi frame detection : TFF : 380 BFF : 0 Progressive :
  7120 Undetermined : 0
  

  ---

  This is my command for adaptive hardware deinterlacing. It gives great results with picture, but sound is out of sync.

  ffmpeg -y -err_detect ignore_err -loglevel debug -vsync -1 -hwaccel cuvid -hwaccel_device 1 -c:v h264_cuvid -deint adaptive -r:v 50 -gpu:v 1 -i "udp://xxx.xxx.xxx.xxx:xxxx=?overrun_nonfatal=1&fifo_size=84450&buffer_size=33554432" -map 0:0 -map 0:1 -c:a aac -b:a 196k -c:v h264_nvenc -flags -global_header+cgop -gpu:v 1 -g:v 50 -bf:v 4 -coder:v cabac -b_adapt:v false -b:v 5184000 -minrate:v 5184000 -maxrate:v 5184000 -bufsize:v 2488320 -rc:v cbr_hq -2pass:v true -rc-lookahead:v 25 -no-scenecut:v 1 -profile:v high -preset:v slow -color_range:v 1 -color_trc:v 1 -color_primaries:v 1 -colorspace:v 1 -f hls -hls_time 5 -hls_list_size 3 -start_number 0 -hls_flags delete_segments /srv/hls/program_01/1080p/index.m3u8

  If I add option "-drop_second_field 1" to h264_cuvid and remove -r:v 50 from input and put it to h264_nvenc - then transcoded stream has synced audio, but I think I’m losing quality due to drop_second_field option.

  ffmpeg -y -err_detect ignore_err -loglevel debug -vsync -1 -hwaccel cuvid -hwaccel_device 1 -c:v h264_cuvid -deint adaptive -drop_second_field 1 -gpu:v 1 -i "udp://xxx.xxx.xxx.xxx:xxxx=?overrun_nonfatal=1&fifo_size=84450&buffer_size=33554432" -map 0:0 -map 0:1 -c:a aac -b:a 196k -c:v h264_nvenc -flags -global_header+cgop -gpu:v 1 -g:v 50 -r:v 50 -bf:v 4 -coder:v cabac -b_adapt:v false -b:v 5184000 -minrate:v 5184000 -maxrate:v 5184000 -bufsize:v 2488320 -rc:v cbr_hq -2pass:v true -rc-lookahead:v 25 -no-scenecut:v 1 -profile:v high -preset:v slow -color_range:v 1 -color_trc:v 1 -color_primaries:v 1 -colorspace:v 1 -f hls -hls_time 5 -hls_list_size 3 -start_number 0 -hls_flags delete_segments /srv/hls/program_01/1080p/index.m3u8

  Could someone please point me in the right direction how to properly deinterlace with cuvid and minimal possible loss of quality ?

• why am i getting very low encoding bitrate using vaapi in ffmpeg

  19 janvier 2021, par ohroblot

  I am using this command :

  


  ffmpeg -y \
-vaapi_device /dev/dri/renderD128 \
-loop 1 -r 1 -i ./image.jpg -pix_fmt vaapi_vld \                                          
-b:v 18000k -minrate 18000k \
-vf 'format=nv12|vaapi,hwupload,scale_vaapi=w=1280:h=720' \ 
-rc_mode 3 \
-r 30 -g 60 \
-c:v h264_vaapi -f flv /dev/null


  


  I am getting very low bitrate with this, the bitrate is as low as 100Kbits/s. I get faster encoding using libx264 and my cpu. Is it an underpowered GPU ? am I missing some ffmpeg arguments ?

  


  I am not sure what's going on, could this be an issue with linux, mesa drivers, did i miss some options when I compiled ffmpeg ?

  


  vainfo

  


  error: can't connect to X server!
libva info: VA-API version 1.8.0
libva info: Trying to open /usr/lib/x86_64-linux-gnu/dri/radeonsi_drv_video.so
libva info: Found init function __vaDriverInit_1_8
libva info: va_openDriver() returns 0
vainfo: VA-API version: 1.8 (libva 2.8.0)
vainfo: Driver version: Mesa Gallium driver 20.2.6 for AMD Radeon (TM) RX 480 Graphics (POLARIS10, DRM 3.38.0, 5.8.0-7630-generic, LLVM 11.0.0)
vainfo: Supported profile and entrypoints
      VAProfileMPEG2Simple            : VAEntrypointVLD
      VAProfileMPEG2Main              : VAEntrypointVLD
      VAProfileVC1Simple              : VAEntrypointVLD
      VAProfileVC1Main                : VAEntrypointVLD
      VAProfileVC1Advanced            : VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointVLD
      VAProfileH264ConstrainedBaseline: VAEntrypointEncSlice
      VAProfileH264Main               : VAEntrypointVLD
      VAProfileH264Main               : VAEntrypointEncSlice
      VAProfileH264High               : VAEntrypointVLD
      VAProfileH264High               : VAEntrypointEncSlice
      VAProfileHEVCMain               : VAEntrypointVLD
      VAProfileHEVCMain               : VAEntrypointEncSlice
      VAProfileHEVCMain10             : VAEntrypointVLD
      VAProfileJPEGBaseline           : VAEntrypointVLD
      VAProfileNone                   : VAEntrypointVideoProc


  


  ffmpeg -buildconf

  


  ffmpeg version N-100671-gc48110a4a4 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 10 (Ubuntu 10.2.0-13ubuntu1)
  configuration: --prefix=/home/_user/Dev/ffmpeg_build/build --extra-cflags='-I/home/_user/Dev/ffmpeg_build/build/include -I/usr/include' --extra-ldflags='-L/home/_user/Dev/ffmpeg_build/build/lib -L/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -Wl,-rpath=/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -ldrm -L/usr/lib' --pkg-config-flags=--static --extra-libs='-lpthread -lm' --bindir=/home/_user/Dev/ffmpeg_build/bin --arch=amd64 --disable-shared --disable-ffprobe --disable-ffplay --disable-gnutls --enable-openssl --enable-zlib --enable-librtmp --enable-static --enable-chromaprint --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree --enable-vdpau --enable-ladspa --enable-libaom --enable-libbs2b --enable-libcaca --enable-libcodec2 --enable-libdav1d --enable-libfontconfig --enable-libfribidi --enable-libgme --enable-libopenjpeg --enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libwebp --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-libass --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-librabbitmq --enable-libvorbis --enable-libvpx --enable-libflite --enable-chromaprint --enable-frei0r
  libavutil      56. 63.101 / 56. 63.101
  libavcodec     58.117.101 / 58.117.101
  libavformat    58. 65.101 / 58. 65.101
  libavdevice    58. 11.103 / 58. 11.103
  libavfilter     7. 96.100 /  7. 96.100
  libswscale      5.  8.100 /  5.  8.100
  libswresample   3.  8.100 /  3.  8.100
  libpostproc    55.  8.100 / 55.  8.100

  configuration:
    --prefix=/home/_user/Dev/ffmpeg_build/build
    --extra-cflags='-I/home/_user/Dev/ffmpeg_build/build/include -I/usr/include'
    --extra-ldflags='-L/home/_user/Dev/ffmpeg_build/build/lib -L/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -Wl,-rpath=/home/_user/Dev/ffmpeg_build/build/lib/x86_64-linux-gnu -ldrm -L/usr/lib'
    --pkg-config-flags=--static
    --extra-libs='-lpthread -lm'
    --bindir=/home/_user/Dev/ffmpeg_build/bin
    --arch=amd64
    --disable-shared
    --disable-ffprobe
    --disable-ffplay
    --disable-gnutls
    --enable-openssl
    --enable-zlib
    --enable-librtmp
    --enable-static
    --enable-chromaprint
    --enable-gpl
    --enable-libass
    --enable-libfdk-aac
    --enable-libfreetype
    --enable-libmp3lame
    --enable-libopus
    --enable-libvorbis
    --enable-libvpx
    --enable-libx264
    --enable-libx265
    --enable-nonfree
    --enable-vdpau
    --enable-ladspa
    --enable-libaom
    --enable-libbs2b
    --enable-libcaca
    --enable-libcodec2
    --enable-libdav1d
    --enable-libfontconfig
    --enable-libfribidi
    --enable-libgme
    --enable-libopenjpeg
    --enable-librsvg
    --enable-librubberband
    --enable-libshine
    --enable-libsnappy
    --enable-libsoxr
    --enable-libspeex
    --enable-libsrt
    --enable-libssh
    --enable-libtheora
    --enable-libtwolame
    --enable-libvidstab
    --enable-libwebp
    --enable-libxml2
    --enable-libxvid
    --enable-libzmq
    --enable-libzvbi
    --enable-lv2
    --enable-omx
    --enable-openal
    --enable-opencl
    --enable-opengl
    --enable-sdl2
    --enable-pocketsphinx
    --enable-libdc1394
    --enable-libdrm
    --enable-libiec61883
    --enable-libass
    --enable-libfreetype
    --enable-libgsm
    --enable-libmp3lame
    --enable-libmysofa
    --enable-libopenjpeg
    --enable-libopenmpt
    --enable-libopus
    --enable-librabbitmq
    --enable-libvorbis
    --enable-libvpx
    --enable-libflite
    --enable-chromaprint
    --enable-frei0r


  


  a link to full logs : http://0x0.st/-i2j.txt

  


• How to record the bluetooth audio from my phone in my pc using ffmpeg ?

  12 septembre 2023, par Juan Inzunza

  I have my phone connected via Bluetooth to my PC and playing audio in my phone so i can hear that audio in my pc and i was trying to record that audio in my PC using ffmpeg this is the command i got so far

  


  ffmpeg -f pulse -ac 1 -ar 44100 -i alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback -f pulse -ac 2 -ar 44100 -i bluez_source.84_5F_04_75_B9_F6.a2dp_source -filter_complex amix=inputs=2 -i /dev/video5 -s 640x480 -vcodec libx264 -preset veryfast -crf 18 -acodec libmp3lame -ar 44100 -q:a 1 -pix_fmt yuv420p -aq 0 ~/Videos


  


  "bluez_source.84_5F_04_75_B9_F6.a2dp_source" is the name of the bluetooth audio source (my phone) but the problem is, if i am not playing audio on the device, just disappears when i execute this command "pactl list sources", and appears again when i play audio, so is listed when i run "pactl list sources" and i have to keep the phone playing audio so ffmpeg recognizes that device and not fail when executed.

  


  Finally my question is how can i keep that device in running state or suspended state without need to play audio all the time.

  


  gandalf@Mordor:~$ pactl list sources
Source #64
    State: IDLE
    Name: alsa_output.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.analog-stereo.monitor
    Description: Monitor of KT USB Audio Analog Stereo
    Driver: module-alsa-card.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 85
    Mute: no
    Volume: front-left: 65536 / 100% / 0.00 dB,   front-right: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: alsa_output.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.analog-stereo
    Latency: 0 usec, configured 2000000 usec
    Flags: DECIBEL_VOLUME LATENCY 
    Properties:
        device.description = "Monitor of KT USB Audio Analog Stereo"
        device.class = "monitor"
        alsa.card = "1"
        alsa.card_name = "KT USB Audio"
        alsa.long_card_name = "KTMicro KT USB Audio at usb-0000:03:00.3-3, full speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:03:00.3-usb-0:3:1.0"
        sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.3/usb1/1-3/1-3:1.0/sound/card1"
        udev.id = "usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00"
        device.bus = "usb"
        device.vendor.id = "12d1"
        device.vendor.name = "Huawei Technologies Co., Ltd."
        device.product.id = "0010"
        device.product.name = "KT USB Audio"
        device.serial = "KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000-"
        device.string = "1"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-usb"
    Formats:
        pcm

Source #65
    State: SUSPENDED
    Name: alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback
    Description: KT USB Audio Mono
    Driver: module-alsa-card.c
    Sample Specification: s16le 1ch 44100Hz
    Channel Map: mono
    Owner Module: 85
    Mute: no
    Volume: mono: 65536 / 100% / 0.00 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: n/a
    Latency: 0 usec, configured 0 usec
    Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY 
    Properties:
        alsa.resolution_bits = "16"
        device.api = "alsa"
        device.class = "sound"
        alsa.class = "generic"
        alsa.subclass = "generic-mix"
        alsa.name = "USB Audio"
        alsa.id = "USB Audio"
        alsa.subdevice = "0"
        alsa.subdevice_name = "subdevice #0"
        alsa.device = "0"
        alsa.card = "1"
        alsa.card_name = "KT USB Audio"
        alsa.long_card_name = "KTMicro KT USB Audio at usb-0000:03:00.3-3, full speed"
        alsa.driver_name = "snd_usb_audio"
        device.bus_path = "pci-0000:03:00.3-usb-0:3:1.0"
        sysfs.path = "/devices/pci0000:00/0000:00:08.1/0000:03:00.3/usb1/1-3/1-3:1.0/sound/card1"
        udev.id = "usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00"
        device.bus = "usb"
        device.vendor.id = "12d1"
        device.vendor.name = "Huawei Technologies Co., Ltd."
        device.product.id = "0010"
        device.product.name = "KT USB Audio"
        device.serial = "KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000-"
        device.string = "hw:1"
        device.buffering.buffer_size = "176400"
        device.buffering.fragment_size = "88200"
        device.access_mode = "mmap+timer"
        device.profile.name = "mono-fallback"
        device.profile.description = "Mono"
        device.description = "KT USB Audio Mono"
        module-udev-detect.discovered = "1"
        device.icon_name = "audio-card-usb"
    Ports:
        analog-input-mic: Microphone (type: Mic, priority: 8700, availability unknown)
    Active Port: analog-input-mic
    Formats:
        pcm

Source #68
    State: RUNNING
    Name: bluez_source.84_5F_04_75_B9_F6.a2dp_source
    Description: Juan's S20 FE
    Driver: module-bluez5-device.c
    Sample Specification: s16le 2ch 44100Hz
    Channel Map: front-left,front-right
    Owner Module: 23
    Mute: no
    Volume: front-left: 53151 /  81% / -5.46 dB,   front-right: 53151 /  81% / -5.46 dB
            balance 0.00
    Base Volume: 65536 / 100% / 0.00 dB
    Monitor of Sink: n/a
    Latency: 68928 usec, configured 68537 usec
    Flags: HARDWARE DECIBEL_VOLUME LATENCY 
    Properties:
        bluetooth.protocol = "a2dp_source"
        bluetooth.codec = "sbc"
        device.description = "Juan's S20 FE"
        device.string = "84:5F:04:75:B9:F6"
        device.api = "bluez"
        device.class = "sound"
        device.bus = "bluetooth"
        device.form_factor = "phone"
        bluez.path = "/org/bluez/hci0/dev_84_5F_04_75_B9_F6"
        bluez.class = "0x5a020c"
        bluez.alias = "Juan's S20 FE"
        device.icon_name = "audio-card-bluetooth"
    Ports:
        phone-input: Phone (type: Phone, priority: 0, available)
    Active Port: phone-input
    Formats:
        pcm


  


  This is the error i am getting when there's no playing audio in my phone.

  


  ffmpeg version 4.4.2-0ubuntu0.22.04.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 11 (Ubuntu 11.2.0-19ubuntu1)
  configuration: --prefix=/usr --extra-version=0ubuntu0.22.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --arch=amd64 --enable-gpl --disable-stripping --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sdl2 --enable-pocketsphinx --enable-librsvg --enable-libmfx --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-shared
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Guessed Channel Layout for Input Stream #0.0 : mono
Input #0, pulse, from 'alsa_input.usb-KTMicro_KT_USB_Audio_2021-06-25-0000-0000-0000--00.mono-fallback':
  Duration: N/A, start: 1694557964.268337, bitrate: 705 kb/s
  Stream #0:0: Audio: pcm_s16le, 44100 Hz, mono, s16, 705 kb/s
bluez_source.84_5F_04_75_B9_F6.a2dp_source: Input/output error