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• FFmpeg-command freezes app on NET MAUI Android [closed]

  28 septembre 2024, par Christian Röder

  Cheers,

  


  I'm developing a .NET MAUI app where I want to create videos from a list of images.

  


  This is the command : "-y -f concat -safe 0 -analyzeduration 100M -probesize 50M -i {Path.Combine(basePath, "input.txt")} -vf \"scale=720:1280,setsar=1:1\" -vcodec mpeg4 -pix_fmt yuv420p {outputPath}"

  


  The problem is, my app freezes when the command is executed. I've tried so much await/async/await/Task stuff, it changes nothing. The video ist created anyway...
When I'm using a simple command like "-encoders" everything is fine.

  


  This is the log when creating a video out of three images :

  


  [ffmpeg-kit] ffmpeg version n6.0
[ffmpeg-kit]  Copyright (c) 2000-2023 the FFmpeg developers
[ffmpeg-kit] 
[ffmpeg-kit]   built with Android (7155654, based on r399163b1) clang version 11.0.5 (https://android.googlesource.com/toolchain/llvm-project 87f1315dfbea7c137aa2e6d362dbb457e388158d)
[ffmpeg-kit]   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 --enable-pic --enable-jni --enable-optimizations --enable-swscale --disable-static --enable-shared --enable-pthreads --enable-v4l2-m2m --disable-outdev=fbdev --disable-indev=fbdev --enable-small --disable-xmm-clobber-test --disable-debug --enable-lto --disable-neon-clobber-test --disable-programs --disable-postproc --disable-doc --disable-htmlpages --disable-manpages --disable-podpages --disable-txtpages --disable-sndio --disable-schannel --disable-securetransport --disable-xlib --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --disable-videotoolbox --disable-audiotoolbox --disable-appkit --disable-alsa --disable-cuda --disable-cuvid --disable-nvenc --disable-vaapi --disable-vdpau --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-gmp --enable-gnutls --enable-libmp3lame --enable-libass --enable-iconv --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libxml2 --enable-libopencore-amrnb --enable-libshine --enable-libspeex --enable-libdav1d --enable-libkvazaar --enable-libilbc --enable-libopus --enable-libsnappy --enable-libsoxr --enable-libtwolame --disable-sdl2 --enable-libvo-amrwbenc --enable-libzimg --disable-openssl --enable-zlib --enable-mediacodec
[ffmpeg-kit]   libavutil      58.  2.100 / 58.  2.100
[ffmpeg-kit]   libavcodec     60.  3.100 / 60.  3.100
[ffmpeg-kit]   libavformat    60.  3.100 / 60.  3.100
[ffmpeg-kit]   libavdevice    60.  1.100 / 60.  1.100
[ffmpeg-kit]   libavfilter     9.  3.100 /  9.  3.100
[ffmpeg-kit]   libswscale      7.  1.100 /  7.  1.100
[ffmpeg-kit]   libswresample   4. 10.100 /  4. 10.100
[ffmpeg-kit] Input #0, concat, from '/data/user/0/com.companyname.myapp/cache/input.txt':
[ffmpeg-kit]   Duration: 
[ffmpeg-kit] 00:00:01.50
[ffmpeg-kit] , start: 
[ffmpeg-kit] 0.000000
[ffmpeg-kit] , bitrate: 
[ffmpeg-kit] 1 kb/s
[ffmpeg-kit] 
[ffmpeg-kit]   Stream #0:0
[ffmpeg-kit] : Video: png, rgba(pc), 1080x1970
[ffmpeg-kit] , 
[ffmpeg-kit] 25 fps, 
[ffmpeg-kit] 25 tbr, 
[ffmpeg-kit] 25 tbn
[ffmpeg-kit] 
[ffmpeg-kit] Stream mapping:
[ffmpeg-kit]   Stream #0:0 -> #0:0
[ffmpeg-kit]  (png (native) -> mpeg4 (native))
[ffmpeg-kit] 
[ffmpeg-kit] Press [q] to stop, [?] for help
[ffmpeg-kit] Output #0, mp4, to '/data/user/0/com.companyname.myapp/cache/myapp.mp4':
[ffmpeg-kit]   Metadata:
[ffmpeg-kit]     encoder         : 
[ffmpeg-kit] Lavf60.3.100
[ffmpeg-kit] 
[ffmpeg-kit]   Stream #0:0
[ffmpeg-kit] : Video: mpeg4 (mp4v / 0x7634706D), yuv420p(tv, unknown/bt709/iec61966-2-1, progressive), 720x1280 [SAR 1:1 DAR 9:16], q=2-31, 200 kb/s
[ffmpeg-kit] , 
[ffmpeg-kit] 25 fps, 
[ffmpeg-kit] 12800 tbn
[ffmpeg-kit] 
[ffmpeg-kit]     Metadata:
[ffmpeg-kit]       encoder         : 
[ffmpeg-kit] Lavc60.3.100 mpeg4
[ffmpeg-kit] 
[ffmpeg-kit]     Side data:
[ffmpeg-kit]       
[ffmpeg-kit] cpb: 
[ffmpeg-kit] bitrate max/min/avg: 0/0/200000 buffer size: 0 
[ffmpeg-kit] vbv_delay: N/A
[ffmpeg-kit] 
[ffmpeg-kit] frame=    0 fps=0.0 q=4.1 size=       0kB time=00:00:00.00 bitrate=N/A speed=   0x    
[ffmpeg-kit] frame=   36 fps=0.0 q=2.7 Lsize=     268kB time=00:00:01.40 bitrate=1568.3kbits/s dup=33 drop=0 speed=7.18x    
[ffmpeg-kit] video:267kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 
[ffmpeg-kit] 0.382941%
[ffmpeg-kit] 


  


  I've putting the execute command in many different ways like Task.Run(() => ffmpegService.Execute(encoderCommand));

  


• ffmpeg unable to convert vhs-captured .ts files [closed]

  4 avril, par fredko

  I'm digitizing vhs tapes with a Hauppauge Colossus capture card and Mediaportal on windows 7. They're captured as .ts files and the .ts files play well, with no sign of corruption.

  


  But I'd like to convert them to .mkv (losslessly from the .ts), and ffmpeg (version 2023-08-28-git-b5273c619d-essentials_build-www.gyan.dev) fails at this. I use

  


  ffmpeg.exe -i test.ts -c copy test.mkv


  


  and get these errors repeated many times

  


  [mpegts @ 00000000003d6d40] Packet corrupt (stream = 0, dts = 46105).
[mpegts @ 00000000003d6d40] Packet corrupt (stream = 0, dts = 49107).
[h264 @ 00000000003fc580] non-existing PPS 0 referenced
    Last message repeated 1 times
[h264 @ 00000000003fc580] decode_slice_header error
[h264 @ 00000000003fc580] no frame!
...etc...
[in#0/mpegts @ 00000000003d6b80] corrupt input packet in stream 0
[mpegts @ 00000000003d6d40] Packet corrupt (stream = 0, dts = 247305).
...etc...


  


  The resulting mkv file is much smaller than the .ts, and displays solid black in mpc-hc. Ffprobe gives the same errors and ends with

  


  Input #0, mpegts, from 'test.ts':
  Duration: 00:24:26.80, start: 0.099956, bitrate: 4486 kb/s
  Program 137 
  Stream #0:0[0x30]: Video: h264 (Main) (HDMV / 0x564D4448), yuv420p(top first),
 720x480 [SAR 10:11 DAR 15:11], 29.97 fps, 29.97 tbr, 90k tbn
  Stream #0:1[0x40]: Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo,
 fltp, 188 kb/s


  


  Ffmpeg seems to be complaining about corruption, though again the .ts files play fine. Is there some way to use ffmpeg to convert these files to mkv ? Or is the problem with the capture setup ?

  


• Error audio loading when runing Whisper Open AI model

  9 juin 2024, par John mick

  The problem I'm trying to solve is that I can't run Whisper model for some audio, it says something related to audio decoding.

  


  payload.wav: Invalid data found when processing input.
raise RuntimeError(f"Failed to load audio: {e.stderr.decode()}") from e


  


  I tried using the micro-machines.wav and it works fine but when i used other audio it gives me an error.

  


  import whisper

model = whisper.load_model("base")
text=model.transcribe('micro-machines.wav',fp16=False)
print(text)
text=model.transcribe('payload.wav',fp16=False)
print(text)


  


  Error I'm getting for payload :

  


  d:\...\venv\lib\site-packages\whisper\transcribe.py:79: UserWarning: FP16 is not supported on CPU; using FP32 instead&#xA;  warnings.warn("FP16 is not supported on CPU; using FP32 instead")                                                                                        &#xA;Traceback (most recent call last):&#xA;  File "d:\...\venv\lib\site-packages\whisper\audio.py", line 42, in load_audio&#xA;    ffmpeg.input(file, threads=0)                                                                                    &#xA;  File "d:\...\venv\lib\site-packages\ffmpeg\_run.py", line 325, in run        &#xA;    raise Error(&#x27;ffmpeg&#x27;, out, err)                                                                                  &#xA;ffmpeg._run.Error: ffmpeg error (see stderr output for detail)                                                       &#xA;&#xA;The above exception was the direct cause of the following exception:&#xA;&#xA;Traceback (most recent call last):&#xA;  File "C:\....\Python\Python39\lib\runpy.py", line 197, in _run_module_as_main&#xA;    return _run_code(code, main_globals, None,&#xA;  File "C:\.....\Python\Python39\lib\runpy.py", line 87, in _run_code&#xA;    exec(code, run_globals)&#xA;  File "D:\...\venv\Scripts\whisper.exe\__main__.py", line 7, in <module>&#xA;  File "d:\...\venv\lib\site-packages\whisper\transcribe.py", line 314, in cli&#xA;    result = transcribe(model, audio_path, temperature=temperature, **args)&#xA;  File "d:\...\venv\lib\site-packages\whisper\transcribe.py", line 85, in transcribe&#xA;    mel = log_mel_spectrogram(audio)&#xA;  File "d:\...\venv\lib\site-packages\whisper\audio.py", line 111, in log_mel_spectrogram&#xA;    audio = load_audio(audio)&#xA;  File "d:\...\venv\lib\site-packages\whisper\audio.py", line 47, in load_audio&#xA;    raise RuntimeError(f"Failed to load audio: {e.stderr.decode()}") from e&#xA;RuntimeError: Failed to load audio: ffmpeg version 6.0-essentials_build-www.gyan.dev Copyright (c) 2000-2023 the FFmpeg developers&#xA;  built with gcc 12.2.0 (Rev10, Built by MSYS2 project)&#xA;  configuration: --enable-gpl --enable-version3 --enable-static --disable-w32threads --disable-autodetect --enable-fontconfig --enable-iconv --enable-gnutls --enable-libxml2 --enab&#xA;le-gmp --enable-lzma --enable-zlib --enable-libsrt --enable-libssh --enable-libzmq --enable-avisynth --enable-sdl2 --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxv&#xA;id --enable-libaom --enable-libopenjpeg --enable-libvpx --enable-libass --enable-libfreetype --enable-libfribidi --enable-libvidstab --enable-libvmaf --enable-libzimg --enable-amf &#xA;--enable-cuda-llvm --enable-cuvid --enable-ffnvcodec --enable-nvdec --enable-nvenc --enable-d3d11va --enable-dxva2 --enable-libmfx --enable-libgme --enable-libopenmpt --enable-libo&#xA;pencore-amrwb --enable-libmp3lame --enable-libtheora --enable-libvo-amrwbenc --enable-libgsm --enable-libopencore-amrnb --enable-libopus --enable-libspeex --enable-libvorbis --enab&#xA;le-librubberband&#xA;  libavutil      58.  2.100 / 58.  2.100&#xA;  libavcodec     60.  3.100 / 60.  3.100&#xA;  libavformat    60.  3.100 / 60.  3.100&#xA;  libavdevice    60.  1.100 / 60.  1.100&#xA;  libavfilter     9.  3.100 /  9.  3.100&#xA;  libswscale      7.  1.100 /  7.  1.100&#xA;  libswresample   4. 10.100 /  4. 10.100&#xA;  libpostproc    57.  1.100 / 57.  1.100&#xA;payload.wav: Invalid data found when processing input&#xA;</module>

  


  I tried searching for solutions and I found one which says It appears that the code failed to load the audio file for some reason and even failed to display that error because e.stderr did not contain a valid UTF-8 string