Error using VideoWriter to write video frames to a file

23 次查看（过去 30 天）
Jason
Jason 2021-3-12
评论： Jason 2021-3-12
Hello, I am trying to save a video from a FLIR camera using the gentl adaptor.
vid = videoinput('gentl', 1, 'Mono16');
src=getselectedsource(vid);
vid.FramesPerTrigger=20;
preview(vid);
start(vid);
stoppreview(vid);
diskLogger=VideoWriter('D:\Temp\VidMatlab.mp4','MPEG-4'); % Use the MPEG-4 Codec
open(diskLogger);
vid.FramesAvailable
data=getdata(vid,vid.FramesAvailable);
numFrames=size(data,4)
for x=1:numFrames
writeVideo(diskLogger,data(:,:,:,x));
end
close(diskLogger)
But I keep getting the error message
Warning: No video frames were written to this file. The file may be invalid.
Error using VideoWriter/writeVideo (line 414)
Operands to the || and && operators must be convertible to logical scalar values.
  2 个评论
Jason
Jason 2021-3-12
OK its this:
if (min(inputFrames(:)) < 0) || (max(inputFrames(:)) > 1)
error(message('MATLAB:audiovideo:VideoWriter:invalidRange', curDataType));
Jason
Jason 2021-3-12
OK I have 2 errors:
1: data=getdata(vid,vid.FramesPerTrigger); rather than data=getdata(vid,vid.FramesAvailable)
2: For video, you must use Mono8

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Jan
Jan 2021-3-12
Maybe the debugger reveals some details. Type this in the command window:
dbstop if caught error
Then run the code again. If Matlab stops at the error, check which arguments are not scalar in line 414 of videoWriter.

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

R2020b

Community Treasure Hunt

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

Start Hunting!

Translated by