The mpeg4 tag has no wiki summary.
22
votes
4answers
23k views
Joining H264 *without* re-encoding
I have two halves of a single show in two .MP4 files, encoded in H264. I would like to join them without re-encoding.
Is this possible?
I managed to create a joined video as a Quicktime file (.mov) ...
20
votes
2answers
12k views
What do the numbers 240 and 360 mean when downloading video? How can I tell which video is more compressed?
I have downloaded some computer science lectures from YouTube recently. There is usually more than one choice of file size and file format to download.
I noticed that for the same video, the ...
4
votes
3answers
5k views
Synchronizing audio and video using MP4Box / ffmpeg to concatenate files
I have two H.264 encoded MPEG-4 files that I need to concatenate. I have been using MP4Box for this task by first ensuring the files are encoded identically (even went so far as to compare output from ...
2
votes
1answer
1k views
Repairing corrupt MP4
I took a video from my Android phone (Sony Xperia P, if you need to know), and before I could stop recording it, the phone memory got full and the phone got hanged too. I rebooted the phone, the video ...
2
votes
2answers
865 views
How can I convert trp video format to mpeg4?
Has anybody had experience with converting TRP format to MPEG4 or any other format playable on a PC?
2
votes
1answer
2k views
Why does encoding a video using the MJPEG codec take longer than MPEG-4?
I am testing the encoding performance (MPEG-4 and MJPEG) of a smart camera. I have written an application in OpenCV/FFMPEG for performing encoding, where the application captures images from the ...
2
votes
1answer
152 views
What is the quickest way to merge multiple MPEG-4 files to a single DVD?
I am using Mac OS X 10.5
I have 30 MPEG-4 files, and I wish to burn these to a DVD that can be played in a standard DVD player (i.e. on a TV) What is the best way to burn these all to a DVD so that ...
1
vote
1answer
375 views
What are the “software” requirements for a 3D video?
Today, looking for the technical explanations about MPEG4, I saw that it can implement the VRML rendering for a 3D video. This makes me wondering about the "software" requirements to make or to see a ...
1
vote
1answer
509 views
Creating a DVD-player compatible movie file
I've created encoded a MPEG-4 file with mplayer and placed it on a DVD. The file is identified as
RIFF (little-endian) data, AVI, 320 x 240, 25.00 fps, video: FFMpeg MPEG-4, audio: uncompressed ...
1
vote
7answers
828 views
Encoding Uncompressed video
I'd like to encode uncompressed video into compressed avi or mpeg4. Was wondering what program I should look at getting to do such a task. Videos are between 3 and 20 minutes long, and range anywhere ...
1
vote
0answers
19 views
Repair MP4 corrupted index
I have a corrupted MP4 file whose length is 25 minutes, but fter the first 4 minutes it jumps ahead to 20 minutes and one cannot playback the middle portion.
It appears as though the index is ...
1
vote
0answers
210 views
Trancoding a video with vlc and the MPEG-4 codec with a video bit rate
When I try to trancode a video with vlc using the MPEG-4 codec and a video bit rate, I get the following error :
Either both buffer size and max rate or neither must be specified
Here is the ...
0
votes
2answers
593 views
avi to mpeg4 command line convertor
Hi all
I am writting program for recording IP cameras videos.
I use Aforge framework and can save video in avi format, but it's size is too big.
I need some command line program to convert videos from ...
0
votes
0answers
39 views
Is it possible to deploy H.264 decoding capabilities to XP SP3 machines?
The vast majority of workstations here are Windows 7+, which means WMP will play h.264-encoded videos OOTB. Unfortunately, though, there are still some XP machines kicking around. (I believe they're ...
0
votes
0answers
96 views
FFmpeg MPEG-4 encoder quality factor 32 not working
I'm testing all possible qualities of the MPEG-4 encoder to compare them with the H.264 and MPEG-2 codecs. I want a constant quality factor, so I forced the quality with -q:v n -qmax n -qmin n where n ...
0
votes
0answers
50 views
How can I truncate .m4v elementary stream files?
I have two .m4v MPEG4-Visual elementary streams which need to be truncated down to a specific length, leaving the same starting point and simply specifying a frame number at which to end.
I have ...
0
votes
1answer
1k views
MPEG-4 (Base Media / Version 2) to MPEG-4 (3GPP Media Release 5)
Hi I want to convert an MP4 file to work with a Sony Ericsson Aino
Here is a detailed comparison of the file format that I want to convert to which is MP4(3GPP) and the file that I want to convert ...
0
votes
1answer
175 views
Encode divx into iPhone-compatible MPEG4 while downloading?
Is there a way to encode a DivX file into an iPhone-compatible video file while the DivX is downloading/streaming?
Further, is it possible to re-stream the resulting iPhone-compatible video to the ...
