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• ffmpeg convert MJPEG to H.265

  19 juillet 2023, par Андрей Тернити

  I want use ffmpeg to encode MJPEG -> h265. I need use some thread amount. For example 10 threads.

  


  But my code use all cores of my CPU... Why it ignore numa-pools ?

  


  ffmpeg -loglevel verbose -i v.raw -pix_fmt yuv420p -c:v libx265 -vtag hvc1 outf.mp4 -x265-params numa-pools="10"


  


  ffmpeg says :

  


  ...
x265 [info]: Thread pool created using 16 threads
...


  


  It is true. I also can see that all my cores are busy in htop.

  


  This code use all cores of my CPU too...

  


  ffmpeg -loglevel verbose -threads 1  -i v.raw -pix_fmt yuv420p -c:v libx265 -vtag hvc1 outf.mp4 -x265-params numa-pools="10"


  


  $ ffmpeg —version

  


  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


  


  I have raw MJPEG video file. 3840x2160, 25fps, YUYV 4:2:2. I got it this way. (Now I set stream-count=2 to decrease size of my file for users, usually I set 1000)

  


  v4l2-ctl --device=/dev/video0 --set-fmt-video=width=3840,height=2160,pixelformat=MJPG --stream-mmap --set-parm=25 --stream-to=v.raw --stream-count=2


  


  Here you can download v.raw

  


  P.S. I also try drop ffmpeg and use x265 cli directly, but... What is outf.hevc ? No one player can open this...

  


  x265 --input v.raw --fps 25 --input-res 3840x2160 --output outf.hevc


  


• Using FFMPEG to merge video frames back into a video with subtitle messes up the audio when seeking

  26 juin 2023, par YoungDON

  I broke down a h265 video into frames and try to merge them back together with its original audio, subtitle and fonts. The resulting video has an issue where when I try to seek at some points in the video, the audio stops playing. And even when I don't seek, at a point the video hangs and the audio keeps playing. Seconds later, the video resumes, but now, video and audio are out of sync. This doesn't happen with the original video.

  


  The reason I'm breaking the video into frames and merging them is because I want to upscale each frame. But I'm going to leave that part out because this issue occurs with the original unscaled frames.

  


  Here's the details of the original video. Notice it has video, audio and two font streams.

  


  .\ffmpeg.exe -i "input.mkv"

Input #0, matroska,webm, from 'input.mkv':
  Metadata:
    encoder         : libebml v1.3.10 + libmatroska v1.5.2
    creation_time   : 2021-01-07T00:20:19.000000Z
  Duration: 00:23:02.05, start: 0.000000, bitrate: 320 kb/s
    Stream #0:0: Video: hevc (Main), yuv420p(tv), 1280x720, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
    Metadata:
      BPS-eng         : 278671
      DURATION-eng    : 00:23:02.006000000
      NUMBER_OF_FRAMES-eng: 33135
      NUMBER_OF_BYTES-eng: 48140731
      _STATISTICS_WRITING_APP-eng: mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-07 00:20:19
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:1(jpn): Audio: aac (HE-AAC), 48000 Hz, stereo, fltp
    Metadata:
      BPS-eng         : 36166
      DURATION-eng    : 00:23:02.016000000
      NUMBER_OF_FRAMES-eng: 32391
      NUMBER_OF_BYTES-eng: 6247833
      _STATISTICS_WRITING_APP-eng: mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-07 00:20:19
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:2(eng): Subtitle: ass (default)
    Metadata:
      BPS-eng         : 76
      DURATION-eng    : 00:21:20.790000000
      NUMBER_OF_FRAMES-eng: 246
      NUMBER_OF_BYTES-eng: 12264
      _STATISTICS_WRITING_APP-eng: mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-07 00:20:19
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
    Stream #0:3: Attachment: ttf
    Metadata:
      filename        : Roboto-Medium.ttf
      mimetype        : application/x-truetype-font
    Stream #0:4: Attachment: ttf
    Metadata:
      filename        : Roboto-MediumItalic.ttf
      mimetype        : application/x-truetype-font


  


  Here's how I break it into frames

  


  .\ffmpeg.exe -i "input.mkv" -qscale:v 1 -qmin 1 -qmax 1 -vsync 0 "InputFolder/frame%08d.png"


  


  Here's how I merge the frames back to video with all the original streams except the video

  


  .\ffmpeg.exe -r 23.98 -i "InputFolder\frame%08d.png" -i "input.mkv" -map 0:v:0 -map 1 -map -1:v -c:a copy -c:v libx265 -r 23.98 -pix_fmt yuv420p "output.mkv"


  


  Here's the details of the resulting video :

  


  .\ffmpeg.exe -i "output.mkv"

Input #0, matroska,webm, from 'output.mkv':
  Metadata:
    ENCODER         : Lavf58.45.100
  Duration: 00:23:02.05, start: 0.000000, bitrate: 245 kb/s
    Stream #0:0: Video: hevc (Main), yuv420p(tv), 1280x720 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 1k tbn, 23.98 tbc (default)
    Metadata:
      ENCODER         : Lavc58.91.100 libx265
      DURATION        : 00:23:01.777000000
    Stream #0:1(jpn): Audio: aac (HE-AAC), 48000 Hz, stereo, fltp (default)
    Metadata:
      BPS-eng         : 36166
      DURATION-eng    : 00:23:02.016000000
      NUMBER_OF_FRAMES-eng: 32391
      NUMBER_OF_BYTES-eng: 6247833
      _STATISTICS_WRITING_APP-eng: mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-07 00:20:19
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      DURATION        : 00:23:02.046000000
    Stream #0:2(eng): Subtitle: ass (default)
    Metadata:
      BPS-eng         : 76
      DURATION-eng    : 00:21:20.790000000
      NUMBER_OF_FRAMES-eng: 246
      NUMBER_OF_BYTES-eng: 12264
      _STATISTICS_WRITING_APP-eng: mkvmerge v46.0.0 ('No Deeper Escape') 64-bit
      _STATISTICS_WRITING_DATE_UTC-eng: 2021-01-07 00:20:19
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc58.91.100 ssa
      DURATION        : 00:21:21.580000000
    Stream #0:3: Attachment: ttf
    Metadata:
      filename        : Roboto-Medium.ttf
      mimetype        : application/x-truetype-font
    Stream #0:4: Attachment: ttf
    Metadata:
      filename        : Roboto-MediumItalic.ttf
      mimetype        : application/x-truetype-font


  


  One thing to note is that I've done this successfully numerous times with h264 videos. No audio issues. Another thing to note which might be more relevant is that when I merge the frames with only the original audio stream (as opposed to all original streams except video), the audio issue does not occur.

  


  .\ffmpeg.exe -r 23.98 -i "InputFolder\frame%08d.png" -i "input.mkv" -map 0:v:0 -map 1:a:0 -c:a copy -c:v libx265 -r 23.98 -pix_fmt yuv420p "output.mkv"

Produces no audio issues. But this isn't good for me because I want the subtitles and fonts from the original video.


  


  If anyone needs me to upload the original video somewhere so they can reproduce it, let me know.

  


  Edit : Also note that Merging the frames with the original audio AND subtitle stream, i.e without the fonts, the issue remains.

  


• fftp server stream server error- connection to tcp:10.10.X.X timeout=0 faild no route to host

  1er juillet 2023, par slowmonk

  When attempting to stream the webcam using RTSP, I encountered persistent timeout issues.

  


  https://hub.docker.com/r/aler9/rtsp-simple-server

  


  docker run -p 6020:8000 aler9/rtsp-simple-server:latest
2023/07/01 20:15:24 INF MediaMTX v0.23.7
2023/07/01 20:15:24 INF [RTSP] listener opened on :8554 (TCP), :8000 (UDP/RTP), :8001 (UDP/RTCP)
2023/07/01 20:15:24 INF [RTMP] listener opened on :1935
2023/07/01 20:15:24 INF [HLS] listener opened on :8888
2023/07/01 20:15:24 INF [WebRTC] listener opened on :8889 (HTTP)

$ sudo ffmpeg -f v4l2 -framerate 24 -video_size 480x480 -i /dev/video0 -f rtsp -rtsp_transport tcp rtsp://192.168.XXX.XXX:8554/webCamStream


  


  following error occur

  


  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
[video4linux2,v4l2 @ 0x5642e55137c0] The V4L2 driver changed the video from 480x480 to 640x480
[video4linux2,v4l2 @ 0x5642e55137c0] The driver changed the time per frame from 1/24 to 1/30
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, start: 46142.014949, bitrate: 147456 kb/s
  Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo (native) -> mpeg4 (native))
Press [q] to stop, [?] for help
[tcp @ 0x5642e55e34c0] Connection to tcp://10.10.1068:9988?timeout=0 failed: No route to host
Could not write header for output file #0 (incorrect codec parameters ?): No route to host
Error initializing output stream 0:0 --