mp4

I have a small home server that hosts several items, among them a few MP4 sample videos. I've been using a simple <video> tag to play the videos, and it worked well for for Firefox, Chrome and Internet Explorer. However, for some unknown reason my server started locking up a few months back, so I have decided to reinstall the OS. I have salvaged the previous installation from the hard drive and I have re-used (where possible) the configuration files for various components. Everything worked just fine, Except that now Firefox refuses to play the MP4 videos when using the <video> tag, showing

可能很多使用过Mac系统的朋友都应该或多或少是了解MOV视频格式的。MOV视频格式是Mac自带录屏软件Quick Time的默认输出视频格式。所以在Mac上的兼容性肯定是很好的。但是到了Windows上就不一样了。早期Windows用户使用MOV视频文件时甚至出现了打不开的尴尬境地。所以针对这一问题只有一个方法可以解决，那就是把mov格式转换为mp4格式。那应该怎么把mov格式转换为mp4格式呢？请看下方的教程吧。 1、首先就是安装专门转换MOV视频格式的视频格式转换器了。可以在迅捷视频官网中下载安装程序，然后在线安装软件。不过在安装之前需要选择安装软件的位置，不然会默认安装到C盘中。 2、软件安装完成后就需要把MOV格式的视频文件导入到软件里面了。点击软件中的添加文件按钮把需要转换的MOV视频格式导入到软件当中。当然也能选择添加文件夹或者拖拽文件导入软件内。 3、然后就是设置输出文件的保存路径了。点击软件中的更改路径按钮之后在路径选择框中选择桌面为保存MP4视频的地址。当然还可以复制地址到路径框中也有效。然后点击打开文件夹进行确认。 4、然后就是设置输出文件的格式了。点击软件的输出格式中的视频格式，然后选择MP4格式。之后就需要选择MP4视频的分辨率大小。点击选择默认视频分辨率大小就行。并不需要进行任何的修改。 5、最后就可以把mov格式转换为mp4格式了

可能很多使用过Mac系统的朋友都应该或多或少是了解MOV视频格式的。MOV视频格式是Mac自带录屏软件Quick Time的默认输出视频格式。所以在Mac上的兼容性肯定是很好的。但是到了Windows上就不一样了。早期Windows用户使用MOV视频文件时甚至出现了打不开的尴尬境地。所以针对这一问题只有一个方法可以解决，那就是把mov格式转换为mp4格式。那应该怎么把mov格式转换为mp4格式呢？请看下方的教程吧。 1、首先就是安装专门转换MOV视频格式的视频格式转换器了。可以在迅捷视频官网中下载安装程序，然后在线安装软件。不过在安装之前需要选择安装软件的位置，不然会默认安装到C盘中。 2、软件安装完成后就需要把MOV格式的视频文件导入到软件里面了。点击软件中的添加文件按钮把需要转换的MOV视频格式导入到软件当中。当然也能选择添加文件夹或者拖拽文件导入软件内。 3、然后就是设置输出文件的保存路径了。点击软件中的更改路径按钮之后在路径选择框中选择桌面为保存MP4视频的地址。当然还可以复制地址到路径框中也有效。然后点击打开文件夹进行确认。 4、然后就是设置输出文件的格式了。点击软件的输出格式中的视频格式，然后选择MP4格式。之后就需要选择MP4视频的分辨率大小。点击选择默认视频分辨率大小就行。并不需要进行任何的修改。 5、最后就可以把mov格式转换为mp4格式了

I am using FFMPEG library to mux H.264 and AAC frames to MP4 file. I can do that both using command line and C program. Now, instead of writing the muxed MP4 data in to file I want to write these muxed data directly on to socket or pipe. Command line options for that will be appreciated. My actual goal is to write a C program though. I tried using protocols tcp and udp but they are not working with Mp4 format. They are working with the matroska format. Following is working. ffmpeg -i Cartoon.mjpeg -f matroska -r 25 -vcodec copy tcp://10.99.19.224:8888 Following is not and gives error as below.

I know one difference between ogg video and mp4 video is that ogg video doesn't have metadata describing the file size, so when an ogg video is loaded, the controls can't show the time remaining until the file has fully loaded. This can be a problem if the ogg video is more than a few minutes long. Is there a way to get this filesize when the page is requested? (Client-side developer, asking a question that I think has a server-side answer. I welcome suggested edits to this question, if you can think of a way to ask it more specifically.) Well although not the most direct, you could try this.

I have an h.264 encoded stream of video on my server (node.js) and I want to use ffmpeg to convert it to an MP4 stream. Then I want to pipe that MP4 stream from the child process to the client using the response of an HTTP server that I have set up. I am very confused about all the options ffmpeg has and not sure how to pipe the output of the child process to the HTTP response. I have tried several combinations of ffmpeg options but the video does not play in the browser (or show any sign of receiving data) and I don't know if I am converting it to MP4 corretly. I am also not sure I am piping

I have to design a module that detects mp4 files. If will get any random file as input and it has to tell whether it is a mp4 file or not. Where can I find the specification of headers for the mp4 file? Tried googling but could not find anything except the signature. Any other tips regarding C programming for the module? you can check the extension or the file signature ( magic number ) http://www.garykessler.net/library/file_sigs.html http://en.wikipedia.org/wiki/List_of_file_signatures 00 00 00 18 66 74 79 70 33 67 70 35 ....ftyp 3gp5 MPEG-4 video files Or if you're on Unix/Linux you can