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Questions tagged [mpeg-4]

MPEG-4 is an ISO/IEC standard for video and audio compression as a successor of MPEG-2. It has much more complex capabilities including arbitrary shaped videos and new ways of synthesis.

MPEG-4 is an ISO/IEC standard for video and audio compression as a successor of MPEG-2. It has much more complex capabilities including arbitrary shaped videos and new ways of synthesis.

More information about MPEG4 is at http://en.wikipedia.org/wiki/MPEG-4

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H.264 vs MPEG-4 file size

Apple's docs seem to indicate these are different, e.g. http://developer.apple.com/library/ios/#documentation/Miscellaneous/Conceptual/iPhoneOSTechOverview/MediaLayer/MediaLayer.html But which produces smaller file sizes and which will produce…
Snowcrash
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How to split video to frames using Qt?

I'd like to load the video file (H.264 and MPEG-4) and split it in 2 parts for example. I want it split on the 30th second - but I'd like to save frames entirely. So, are there any methods to do it? I looked into the Phonon but I didn't see…
Dmitriy Novichkov
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Write compressed frames to mpeg4 chuncks c++

I'm looking to write already compressed (h264) image data into an MPEG-4 video file. Since this code needs to be optimized to run on an embedded platform the code should be as simple as possible. Best would be to just give some header information…
p.streef
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Problems encoding to .MP4 using ffmpeg

So I'm kind of new to this, I'm writing a WIN32 app that records video to .AVI, then I planned to use ffmpeg to encode to .MP4. Based on a sample I found, I got this far. It compiles and says that it encoded and wrote the file but the output file…
Erik Swansson
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How to extract specifics frames from mp4 file using C# metro application

I didn't find a way to extract specifics frames (ex: frame 1, 2 and 13) from a mpg4 file in a windows 8 application metro style. I found how to extact frame and directly save it in a file using C++. I have to only use C# to extract frames in…
Yupa
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Reverse engineering unknown mpeg4

I have general programming related question. I have a video in unknown mpeg4 format and I want to write a c program to decode it into a known mpeg4 format. I know nothing about my input mpeg4 format. Any thoughts from where I should begin…
Farrukh Arshad
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How to make IE 6 play MPEG-4 HTTP stream?

I have MPEG-4 video stream at http://pool.amursu.ru/video.mpg and I can to watch it using Chrome or Firefox, but Internet Explorer 6 doesn't play it, just attempts to load it forever (I think, it waits for end of file, which, probably, won't ever…
Envek
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Motion Vectors and DC coefficients from MPEG4 stream

I need to extract information about motion vectors and DC coefficients from an MPEG4 video. I've searched relevant sites and topics and I found that a good solution is to work with the code of ffmpeg codec. Especially the ff_print_debug_info…
Lampis
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How to change bitrate mode: VBR to CBR with MPEG4 of H264 file?

I've tried to convert bitrate mode from VBR to CBR with FFMPEG library,but bitrate mode cannot change. My command line: ffmpeg -i -f mpegts -acodec libmp3lame -ar 48000 -ab 64k -s 320×240 -vcodec libx264 -b 96k -flags +loop -cmp +chroma…
The Bird
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h.264 and mpeg header

I'm trying to develop code for mpeg/h.264/RTP streaming. I'm quite new to all this , so maybe my question is a bit silly. I'm capturing video from the mobile camera (android) and I want to stream it. Looking in the net I've found many similar…
jor
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Can I use ffmpeg to create multi-bitrate (MBR) MPEG-4 videos?

I am currently in a webcam streaming server project that requires the function of dynamically adjusting the stream's bitrate according to the client's settings (screen sizes, processing power...) or the network bandwidth. The encoder is ffmpeg,…
hoangbv15
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extract each frame from rtsp (mp4) stream

Im trying to extract each frame from a rtsp mp4 stream, and convert that into a jpeg/gif using ffmpeg. I'm getting the sdp header from 000001b0.....000001b5, and adding that into an byte array then capturing a frame starting from 000001b6 and…
darleys
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Windows Media Player, h264 support and Windows versions

Which Windows versions support h264 playback out of the box (with Windows Media Player)? Is it possible to detect whether the support is available through Javascript? We are serving MPEG-4 video files via Flash. We get requests from the users that…
Mikko Ohtamaa
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DirectShow RTSP SourceFilter with MPEG-4 Video Stream

I create a simple direct show source filter using FFmpeg.I read rtp packets from RTSP source and give them to decoder. It works for h264 stream. MyRtspSourceFilter[H264 Stream] ---> h264 Decoder --> Video Renderer The bad news is that it does not…
Novalis
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Libavcodec mpeg4 avi encoding framerate and timebase problem

I try to generate a video with a timebase more precise than the 1/fps (camera frame rate are not constant). But the generated AVI does not seem to take into account the framerate that I indicate. #include extern "C" { #include…
themadmax
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