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• How do I configure codec parameters for a RTSP stream ?

  16 mai 2024, par Kermit

  I am trying to stream a network camera source into /dev/video0. However, all attempts keep telling me I have set incorrect codec parameters. Any suggestions ?

  


  # works
ffplay rtsp://admin:password@172.16.0.184:554/live


  


  Then trying any of these to feed into /dev/video0 (valid from list of ls /dev/video*) :

  


  ffmpeg -rtsp_transport tcp -i "rtsp://admin:password@172.16.0.184:554/live" -c:v rawvideo -pix_fmt yuv420p -f v4l2 /dev/video0


  


  Results in

  


  ffmpeg version 5.1.4-0+rpt3+deb12u1 Copyright (c) 2000-2023 the FFmpeg developers
  built with gcc 12 (Debian 12.2.0-14)
  configuration: --prefix=/usr --extra-version=0+rpt3+deb12u1 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --disable-mmal --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-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --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-sand --enable-sdl2 --disable-sndio --enable-libjxl --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-librav1e --enable-shared
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, rtsp, from 'rtsp://admin:password@172.16.0.184:554/live':
  Metadata:
    title           : Media Server
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #0:0: Video: hevc (Main), yuv420p(tv), 3840x2160, 30 fps, 100 tbr, 90k tbn
  Stream #0:1: Audio: aac (LC), 32000 Hz, mono, fltp
Stream mapping:
  Stream #0:0 -> #0:0 (hevc (native) -> rawvideo (native))
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x55562d9faa70] ioctl(VIDIOC_G_FMT): Invalid argument
Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
Error initializing output stream 0:0 -- 
Conversion failed!


  


• avformat/hls : Be more picky on extensions

  16 janvier, par Michael Niedermayer

  avformat/hls : Be more picky on extensions
  This blocks disallowed extensions from probing
  
  It also requires all available segments to have matching extensions to the format
  
  mpegts is treated independent of the extension
  It is recommended to set the whitelists correctly
  
  instead of depending on extensions, but this should help a bit,
  
  and this is easier to backport
  Fixes : CVE-2023-6602 II. HLS Force TTY Demuxer
  
  Fixes : CVE-2023-6602 IV. HLS XBIN Demuxer DoS Amplification
  The other parts of CVE-2023-6602 have been fixed by prior commits
  Found-by : Harvey Phillips of Amazon Element55 (element55)
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] doc/demuxers.texi
  • [DH] libavformat/hls.c

• File conversion to mp3 returning failure everytime using flutter package ffmpeg_kit_flutter

  6 novembre 2024, par Sanath balthar

  I am trying to convert a .wav audio file generated from a flutter's text to speech package - "flutter_tts" to mp3 file but it is failing everytime.
I have written the below code for file conversion. I have imported the package ffmpeg_kit_flutter. It doesnt even show why the conversion is failing.
I have looked up in stackoverflow and other sites but could not find any relevant solutions. I am using vscode as editor. I have attached flutter doctor output below as well. Could anyone please guide me ? Let me know if you need more information.

  


  List<string> command = [&#xA;              &#x27;-i&#x27;, &#x27;$filePath/998tts.wav&#x27;,&#xA;              &#x27;-c:a&#x27;, &#x27;mp3&#x27;,&#xA;              &#x27;$filePath/998.mp3&#x27;&#xA;            ];&#xA;&#xA; await FFmpegKitConfig.enableLogs();&#xA;            FFmpegKitConfig.enableLogCallback((log) =>print(&#x27;FFmpeg log: $log&#x27;));        &#xA;          FFmpegSession result = await FFmpegKit.executeWithArguments(command);&#xA;          dynamic resultcode = await result.getReturnCode();&#xA;          dynamic resultlogs = await result.getLogsAsString();&#xA;          // FFmpegKitConfig.setLogLevel(logLevel)&#xA;          if(ReturnCode.isSuccess(resultcode)){&#xA;          print("file saved after conversion at $filePath/998.mp3 and result : Success and logs : $resultlogs");&#xA;          }&#xA;          else{&#xA;            print("Result : failure and logs : $resultlogs");&#xA;          }&#xA;&#xA;Flutter doctor output:&#xA;[√] Flutter (Channel stable, 3.19.6, on Microsoft Windows [Version 10.0.22631.3296], locale en-IN)&#xA;[√] Windows Version (Installed version of Windows is version 10 or higher)&#xA;[√] Android toolchain - develop for Android devices (Android SDK version 34.0.0)&#xA;[√] Chrome - develop for the web&#xA;[!] Visual Studio - develop Windows apps (Visual Studio Community 2022 17.9.5)&#xA;X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C&#x2B;&#x2B;"&#xA;workload, and include these components:&#xA;MSVC v142 - VS 2019 C&#x2B;&#x2B; x64/x86 build tools&#xA;- If there are multiple build tool versions available, install the latest&#xA;C&#x2B;&#x2B; CMake tools for Windows&#xA;Windows 10 SDK&#xA;[√] Android Studio (version 2023.2)&#xA;[√] VS Code (version 1.89.0)&#xA;[√] Connected device (3 available)&#xA;[√] Network resources&#xA;&#xA;! Doctor found issues in 1 category.&#xA;&#xA;</string>

  


  Edit : Attaching error logs :

  


  I/flutter (25865): Loading ffmpeg-kit-flutter.
D/ffmpeg-kit-flutter(25865): FFmpegKitFlutterPlugin com.arthenica.ffmpegkit.flutter.FFmpegKitFlutterPlugin@a5d9788 started listening to events on io.flutter.plugin.common.EventChannel$IncomingStreamRequestHandler$EventSinkImplementation@4cfb5f2.
I/flutter (25865): Loaded ffmpeg-kit-flutter-android-audio-arm64-v8a-6.0.3.
I/flutter (25865): Result : failure and logs : ffmpeg version n6.0 Copyright (c) 2000-2023 the FFmpeg developers
I/flutter (25865):   built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)

I/flutter (25865):   configuration: --cross-prefix=aarch64-linux-android- --sysroot=/Users/sue/Library/Android/sdk/ndk/22.1.7171670/toolchains/llvm/prebuilt/darwin-x86_64/sysroot --prefix=/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/ffmpeg --pkg-config=/opt/homebrew/bin/pkg-config --enable-version3 --arch=aarch64 --cpu=armv8-a --target-os=android --enable-neon --enable-asm --enable-inline-asm --ar=aarch64-linux-android-ar --cc=aarch64-linux-android24-clang --cxx=aarch64-linux-android24-clang++ --ranlib=aarch64-linux-android-ranlib --strip=aarch64-linux-android-strip --nm=aarch64-linux-android-nm --extra-libs='-L/Users/sue/Projects/arthenica/ffmpeg-kit/prebuilt/android-arm64/cpu-features/lib -lndk_compat' --disable-autodetect --enable-cross-compile