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Sur d’autres sites (9247)

  • FFMPEG:Invalid buffer size when converting video

    30 juillet 2022, par Sar sinua

    I'm trying to Pipe bytes in to FFMPEG in python and I've faced a problem.

    


    import subprocess
from io import BytesIO

with open('input.mp4', 'rb') as f:
    input_byte=f.read()
command='ffmpeg -y -f rawvideo -video_size 320x240 -pixel_format yuv420p -framerate 15 -i pipe:0 -codec:a copy out.mp4'
process = subprocess.Popen(command, stdin=subprocess.PIPE, shell=True)

process.stdin.write(input_byte)
process.stdin.close()


    


    The error I get is Invalid buffer size, packet size 63420 < expected frame_size 115200 Error while decoding stream #0:0: Invalid argument

    


    You can download the video from here.

    


    ffmpeg version 2022-05-12-git-30e2bb0f64-full_build-www.gyan.dev

    


  • Why A .FLAC File Converted by FFMPEG Cause File Explorer Unresponse on Windows 10 [closed]

    20 juillet 2022, par Alex King

    My File Explorer Always showing "Working on it."
I've tried many resolutions.
First,I disconnect my NAS drive. seems fine.
I test many times on diffirient windows 10/11 versions.
I thought it was SMB problem on windows. But i was wrong.

    


    Today I'm using FFMPEG convert .wav to .flac.

    


    .\ffmpeg.exe -i $Source -c:a flac $Dest 


    


    Just simple like this. Blow my computer up.

    


    Even worse, explorer.exe crash after I'm trying to open FF output folder.

    


    It's not the poblem from "Quick access" or "Search Index".

    


    I'm now 100% percent confirm the flac files that ffmpeg made will cause file explorer crash.

    


    I can't solve it without knowing the reason.

    


    Might related to audio file tag vorbis ?

    


    This is my FFMPEG info

    


    ffmpeg version n5.0.1-4-ga5ebb3d25e-20220428 Copyright (c) 2000-2022 the FFmpeg developers

built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef)


    


  • PyAV/ffmpeg : How to resolve 'Reinit context to WxH ... deprecated pixel format'

    26 mai 2023, par hi im Bacon

    I am using the pyav library to read and process video data and as I am reading through the videos I am getting lots (and lots) of the following output.

    


    I am creating the videos by segmenting either a much larger source file or RTSP/HTTP IP camera.

    


    I would love to understand what this output actually means, and what I can do to prevent its output

    


    ffmpeg creating videos :

    


    ffmpeg -y -i https://manifest.googlevideo.com/api/... -pix_fmt yuvj422p -c:v libx264 -an -vf scale='min(1280,iw)':'min(720,ih)':force_original_aspect_ratio=decrease -r 12 -vsync cfr -x264opts keyint=12:min-keyint=12 -f segment -segment_format matroska -segment_time 5 -initial_offset 1656497474.686672 -strftime 1 /tmp/tmp87cc1n2o/%Y-%m-%dT%H%M%S.mkv -loglevel error


    


    python :

    


    container = av.open(io.BytesIO(...))
for frame in container.decode(video=0):
   ...


    


    2022-06-30 14:45:00,964 DEBUG:****:Creating <***.core.generators.av.AVGenerator object at 0x7f13340abd50> with target path: <_io.BytesIO object at 0x7f13341c93b0>
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:00,966 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
2022-06-30 14:45:00,984 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,045 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
2022-06-30 14:45:01,046 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuvj422p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 9 more times)
2022-06-30 14:45:01,194 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
2022-06-30 14:45:01,215 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 17 more times)
2022-06-30 14:45:01,384 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 3 more times)
2022-06-30 14:45:01,398 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 22 more times)
2022-06-30 14:45:01,550 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p
deprecated pixel format used, make sure you did set range correctly
deprecated pixel format used, make sure you did set range correctly
 (repeated 2 more times)
2022-06-30 14:45:01,592 DEBUG:libav.h264:Reinit context to 1280x720, pix_fmt: yuv420p


    


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