avi

问题 I am trying to play *.avi file (~900MB) with this code: QMediaPlayer* player = new QMediaPlayer(this); player->setMedia(QUrl::fromLocalFile("mes1.avi")); player->setVideoOutput(ui->videoWidget); player->play(); where ui->videoWidget is QVideoWidget and every time I play it I am getting this error code (in Application Output console) Since google doesn't help, this is my only choice... DirectShowPlayerService::doRender: Unresolved error code 0x80040266 (IDispatch error #102) EDIT1: I have

问题 ffmpeg command to convert from avi file to mp4 file below does create mp4 file, but the quality of it is not all right at all. Fist, the sizes of the files are different, the mp4 is much smaller and about 1/10 of the avi file. Second, the playing time of the newly created mp4 is short lasting about 0.1 seconds where the avi file lasts about 60 seconds. Can anyone please help me out for the ffmpeg command to create mp4 file from avi under the directory like below? for i in /xxxxxxx/xxxxxxx/*

来源： https://stackoverflow.com/questions/48325217/matlabs-videoreader-not-working-on-ubuntu-17-04

来源： https://stackoverflow.com/questions/25998799/specify-compression-quality-in-python-for-opencv-video-object

来源： https://stackoverflow.com/questions/25998799/specify-compression-quality-in-python-for-opencv-video-object

问题 I am investigating a possibility to store video streams which are coming from few sources already coded in h264 without video transcoding as the device I would like to use for this project won't be capable of transcoding combined video on the fly. What I am looking for is two or more pictures side to side (not video concatenation) packed into mp4/avi/mkv. I believe mkv container supports such kind of packaging but I've not been able to find appropriate options for ffmpeg or other tool to

问题 I am investigating a possibility to store video streams which are coming from few sources already coded in h264 without video transcoding as the device I would like to use for this project won't be capable of transcoding combined video on the fly. What I am looking for is two or more pictures side to side (not video concatenation) packed into mp4/avi/mkv. I believe mkv container supports such kind of packaging but I've not been able to find appropriate options for ffmpeg or other tool to

问题 Hi all I wrote a short program that displays an avi file. I need the program to get input from the keyboard while the movie is running (and not after it ends): this is my code: figure('MenuBar','none') set(gcf,'Color', 'white') set(gca,'Color','white'); set(gca,'XColor','white'); set(gca,'YColor','white'); m=aviread('c:/t1.avi') a=30:1:100; b=100:-1:30; c=[a b a b a b a b a b] %to run the movie back and forth movie(m,c) %runs the movie Thank you for any help Ariel 回答1: Maybe you can insert

问题 I am writing a video streaming server application. I have an AVI file and I have put it on IIS 7 for streaming. I found that client cannot jump to an arbitrary location of the media, if the media is not buffered already. I think some meta-data is missing during recording? After searching, I think, Windows Media Player could not jump to any arbitrary location before buffered locally, since Index block of AVI (needed for seeking) is stored at the end of file. Here is an example, if my recorded

问题 I want to read in an .avi video file for a program that I am making. I have the file location saved as a string . Is there any good tutorials on using .avi files in c++ or does anyone know who to read one in? Is it the same as normal files? I have a previously asked SO question that goes into better detail but here is what I want to do: I am making a program that will detect faces (though OpenCV) As of now I have been given a video processor program that will detect each face on a frame, and