Video Reader: Failed to initialize internal resources

81 次查看（过去 30 天）
Robert Daly
Robert Daly 2023-7-10
评论： Robert Daly 2023-7-11
I am trying to read an MP4 video file from a GoPro camera.
The following error shows up when using VideoReader...
v = VideoReader(fullfile(files(ia).folder,files(ia).name));
Error using VideoReader/initReader
Failed to initialize internal resources.
Error in audiovideo.internal.IVideoReader (line 136)
initReader(obj, fileName, currentTime);
Error in VideoReader (line 104)
obj@audiovideo.internal.IVideoReader(varargin{:});
The video codec is MPEG-H Part2/HEVC (H.265) (hcv1)
The audio codec is MPEG AAC Audio (mp4a)
I looked at the supported formats and notice that they mention "MPEG-4, including H.264".
My guess is that H.265 unsupported? Can anyone confirm?
The audio codec appears to be supported.
The video plays on VLC so I assume I have the codec installed.
I am using Windows 10 Enterprise 22H2, Matlab 2022a
Is there anything that can be done to get VideoReader to work with this file?

请先登录，再回答此问题。

采纳的回答

Deep
Deep 2023-7-10
Yeah, it seems that H.265 is unsupported for this. You can use ffmpeg to convert it to H.264 for your task.
ffmpeg -i input.mp4 -vcodec libx264 output.mp4
If you want to do it from MATLAB, there's ffmpeg toolbox. I'd suggest looking into its usage and then using VideoReader on the converted file.
  1 个评论
Robert Daly
Robert Daly 2023-7-11
@Deep thanks for the tip about ffmpeg for changing the codec.
I gave it a test and the file it produced worked as expected with VideoReader.
I had a look at the matlab toolbox but since it seemed I had to download the .exe anyway I just cobbled together a powershell script to run through all of the files.
cd "V:\Video Drops\2023-07-03\GoPro"
$Files = Get-ChildItem -path ".\" -filter *.mp4 -file -ErrorAction silentlycontinue -recurse
foreach ($f in $Files){
& "V:\Instrument Software\Video\ffmpeg-6.0-essentials_build\bin\ffmpeg.exe" -i $f -vcodec libx264 (".\Matlab\"+$f)
}
So far so good...

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Audio and Video Data 的更多信息

标签

产品


版本

R2022a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by