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• Dump individual segment links of m3u8 file from FFFPEG/FFPROBE ?

  22 janvier 2023, par Hemant patel

  I am working on android app, in which i need to read individual segments of remote M3U8 file and downlnlad each segment locally and create local m3u8 file. For thati want to parse m3u8 file and get download links for each segment. I saw that FFMPEG can eaisly download m3u8 file, and while downloading it prints each segment url.

  


  

  


  I want to print ts file links in json format, and then dump thaose links to my download manager.

  


  Please help.

  


  I tried all answers from stackoverflow/google but did not find any thing working

  


• How to avoid critical security issues introduced by ffmpeg ? which seems to be a dependency of DeepFace for running opencv in linux environment

  29 août 2022, par Shubham Patel

  I was trying to run DeepFace in docker and when I ran the container I got an error related to OpenCV.

  


  Following online suggestions, I downloaded the FFmpeg package and it resolved the OpenCV error and everything was working fine inside the container.

  


  I ran a docker scan for checking the security issues and it highlighted 4 critical severity issues introduced through FFmpeg package

  


  Can anyone help me how to avoid these security issues ?

  


  Below is the content of the docker file :

  


  
RUN apt-get update
RUN apt-get install ffmpeg  -y

RUN pip install flask flask_cors deepface numpy pillow flask_wtf

WORKDIR /app
COPY . /app

EXPOSE 84
CMD ["python","app.py"]


  


  Below is the result of the docker scan which uses snyk, NOTE : I am just providing High and Critical Severity issues.

  


    Description: Out-of-bounds Write
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-GDKPIXBUF-2960116
  Introduced through: ffmpeg@7:4.3.4-0+deb11u1, gdk-pixbuf/libgdk-pixbuf2.0-bin@2.42.2+dfsg-1, librsvg/librsvg2-common@2.50.3+dfsg-1
  From: ffmpeg@7:4.3.4-0+deb11u1 > ffmpeg/libavcodec58@7:4.3.4-0+deb11u1 > librsvg/librsvg2-2@2.50.3+dfsg-1 > gdk-pixbuf/libgdk-pixbuf-2.0-0@2.42.2+dfsg-1 > gdk-pixbuf/libgdk-pixbuf2.0-common@2.42.2+dfsg-1
  From: gdk-pixbuf/libgdk-pixbuf2.0-bin@2.42.2+dfsg-1 > gdk-pixbuf/libgdk-pixbuf-2.0-0@2.42.2+dfsg-1
  From: librsvg/librsvg2-common@2.50.3+dfsg-1 > gdk-pixbuf/libgdk-pixbuf-2.0-0@2.42.2+dfsg-1
  and 2 more...
  Image layer: 'apt-get install ffmpeg -y'

✗ High severity vulnerability found in aom/libaom0
  Description: Out-of-bounds Write
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-AOM-1085722
  Introduced through: ffmpeg@7:4.3.4-0+deb11u1
  From: ffmpeg@7:4.3.4-0+deb11u1 > ffmpeg/libavcodec58@7:4.3.4-0+deb11u1 > aom/libaom0@1.0.0.errata1-3
  Image layer: 'apt-get install ffmpeg -y'

✗ Critical severity vulnerability found in zlib/zlib1g
  Description: Out-of-bounds Write
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-ZLIB-2976151
  Introduced through: meta-common-packages@meta
  From: meta-common-packages@meta > zlib/zlib1g@1:1.2.11.dfsg-2+deb11u1
  Image layer: Introduced by your base image (python:3.9.13-slim)

✗ Critical severity vulnerability found in aom/libaom0
  Description: Release of Invalid Pointer or Reference
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-AOM-1290331
  Introduced through: ffmpeg@7:4.3.4-0+deb11u1
  From: ffmpeg@7:4.3.4-0+deb11u1 > ffmpeg/libavcodec58@7:4.3.4-0+deb11u1 > aom/libaom0@1.0.0.errata1-3
  Image layer: 'apt-get install ffmpeg -y'

✗ Critical severity vulnerability found in aom/libaom0
  Description: Use After Free
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-AOM-1298721
  Introduced through: ffmpeg@7:4.3.4-0+deb11u1
  From: ffmpeg@7:4.3.4-0+deb11u1 > ffmpeg/libavcodec58@7:4.3.4-0+deb11u1 > aom/libaom0@1.0.0.errata1-3
  Image layer: 'apt-get install ffmpeg -y'

✗ Critical severity vulnerability found in aom/libaom0
  Description: Buffer Overflow
  Info: https://snyk.io/vuln/SNYK-DEBIAN11-AOM-1300249
  Introduced through: ffmpeg@7:4.3.4-0+deb11u1
  From: ffmpeg@7:4.3.4-0+deb11u1 > ffmpeg/libavcodec58@7:4.3.4-0+deb11u1 > aom/libaom0@1.0.0.errata1-3
  Image layer: 'apt-get install ffmpeg -y'



Organization:      16082204
Package manager:   deb
Target file:       Dockerfile
Project name:      docker-image|face-verification-v2
Docker image:      face-verification-v2
Platform:          linux/amd64
Base image:        python:3.9.13-slim
Licenses:          enabled

Tested 314 dependencies for known issues, found 120 issues.

According to our scan, you are currently using the most secure version of the selected base image```


  


• How would I add an audio channel to an rtsp stream ?

  9 septembre 2022, par PlayerWet

  Good companions. It turns out that my Raspberry does not give more than itself when it comes to joining video with audio at good quality and sending it by rtsp. But I think I could send the video in rtsp format and then the audio in mp3, but I would need to join it again on another computer (nas Debian) on my home lan where I have the Shinobi program (security camera manager) installed.

  


  I would need something that can somehow grab the rtsp stream and another mp3 audio and merge them into a new rtsp stream. Is this possible ? or is it a crazy idea.

  


  On the one hand I send this, which is the transmission of the camera by rtsp through v4l2rtspserver :

  


  v4l2rtspserver -H 1080 -W 1920 -F 25 -P 8555 /dev/video0


  


  And separately I send an audio in mp3 with sound from a usb microphone through ffmpeg :

  


  ffmpeg -ac 1 -f alsa -i hw:1,0 -acodec libmp3lame -ab 32k -ac 1 -f rtp rtp://192.168.1.77:12348


  


  My idea is to put both things together on a nas server in a new rtsp stream (or another idea).

  


  But I don't know if with ffmpeg I can capture the video from an rtsp video stream and then be able to join it with the mp3 audio and form another new rtsp stream.

  


  Merge these two streams into one and reassemble an rtsp :

  


  rtsp://192.168.1.57:8555/unicast

rtp://192.168.1.77:12348


  


  I have tried this way but it gives me an error :

  


  ffmpeg \
    -i rtsp://192.168.1.57:8555/unicast \
    -i rtp://192.168.1.37:12348 \
    -acodec copy -vcodec libx264 \
    -f rtp_mpegts "rtp://192.168.1.77:5000?ttl=2"


  


  Error :

  


  [h264 @ 0x55ac6acaf4c0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x55ac6acaf4c0] decode_slice_header error
[h264 @ 0x55ac6acaf4c0] no frame!
[h264 @ 0x55ac6acaf4c0] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 0x55ac6acaf4c0] decode_slice_header error
[h264 @ 0x55ac6acaf4c0] no frame!
[h264 @ 0x55ac6acaf4c0] non-existing PPS 0 referenced
    Last message repeated 1 times


  


  What am I doing wrong ?