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26
votes
4answers
31k 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) ...
3
votes
1answer
5k 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 ...
1
vote
0answers
355 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 ...
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 ...
0
votes
0answers
87 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 ...
2
votes
2answers
2k 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?
1
vote
0answers
341 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 ...
1
vote
7answers
937 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
1answer
446 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 ...
23
votes
2answers
21k 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 ...
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 ...
0
votes
1answer
2k 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 ...
2
votes
1answer
192 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 ...
0
votes
1answer
177 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 ...
0
votes
2answers
851 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 ...
1
vote
1answer
593 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 ...