I have many videos in .flv and .mp4 formats. I store then in one Windows folder and re-name after downloading so that it becomes easy to find one that I want to play.
It would be best if I can create thumbnail from one of the frames of video file.
Is there a program/utility in which I can open the .flv or .mp4 file, play, pause and take the screen/frame and set it as thumbnail of that file?
I did my best to find it on internet but failed hence thought to reach out to Gurus.
Thanks in advance,
Jay
I think ffmpeg and mencoder can do this
Related
I am recording .mov using AVCaptureMovieFileOutput with AVCaptureSession. I want to record .mp4 file, i guess it is not possible with AVCaptureMovieFileOutput, Any idea how to record .mp4 file?
Edit:
I have googled and found, there is a way AVAssetWriter, however it is not simple as AVCaptureMovieFileOutput?
thanks
There is one more way to record mp4 file, Actually its not recording, after recording with .mov we can convert that into mp4 file if we want. It is not the exact answer for the question, it may helps someone.
I want to create physical .mov or .wmv file from sequence of images for an iphone app, means user will provide me with some images and i will create a video for the user, and if user wants .mov or may be .wmv file, then in that case i will create a video file for the user, and i also want to add sound in that file, now i have searched a lot for this but didn't find anything very use full, can any one tell me is there any tutorial or help full material to do this, or provide me some guidance for how to go about this, thanx and regards Saad
Hi all
I have multi mp3 files, each file have difference sound. Now i need overlap all of them to one file to have a mp3 file with all other sound. Can i do that with ffmpeg or other tool?
Thank for your help.
IMO, can't be done with ffmpeg.
I would decode all mp3 to .wav files and use Audacity to mix all sources to a single stereo .wav. Then, you can easily reencode this to mp3.
Audacity
Are there any easy solutions for saving a number of images into a video file in iOS?
Example: I have 300 frames all saved as separate images and want to turn them into a single video file (e.g., mp4) that a user could email or post on YouTube.
No support in iOS, you may have to use open source libraries such as ffmpeg.
I have implemented a streaming mp3 player using AudioQueueServices, that downloads mp3s over an NSURLConnection. Playback, pausing, and seeking work great, however I can't figure out how to extract the duration of the audio from the mp3 files while they are still being downloaded. I'd like to be able to pull the info from the id3 tags but am clueless as to how to do that. Any thoughts?
You cant directly view the duration of the Mp3 file, but you can work it out by file size, a song that is 3 minuets long is between 1 megabyte.