MPEG Header

[primedaz]

I am looking for some information about the structute of MPEG headers, I have done many searches but have been unable to find anything complete.

I'm looking for what makes up the hex from "00 00 01 BA" to "00 00 01 B3". I have some M1V files and I want to add a muxed header them so any application other than a player can read it. I have had success with Movie2MPEG with the system stream/elementary stream option.

This is what I've gathered so far:
- Header (Starts with 00 00 01 BA ...)
- Padding (Usually FF FF)
- Video Header (Starts with 00 00 01 B3...)
- Closing Data?
- Padding (Usually FF FF)
- Closing Data?
- Audio Header
- Closing Data? (Usually ending in ...00 01 B7)
- Padding (Usually FF FF)

I found some helpful information at this website:
http://homepage.mac.com/rnc/EditMpegHeaderIFO.html

How to editing the playback
attributes of mpeg and .ifo file

This will require HexEditor: search VersionTracker.com
There maybe a file size limit to HexEditor

VTS_01_0.mpv mpeg header

Open your demuxed mpeg video stream (mpv,m1v,m2v) in HexEditor,
Locate the sequence header 00 00 01 b3 (usually hex address 000)
Make changes as need, then save.

Here is an example: 740x480, 16:9, 23.976 fps


0000000: 00 00 01 B3 2E 01 E0 31 00 00 00 00 00 00 00 00

Horizontal Size in Hex
16 0 = 352
1E 0 = 480
2D 0 = 720
2E 4 = 740

Vertical Size in Hex
0F 0 = 240
1E 0 = 480

Aspect Ratio
1 = 1:1
2 = 4:3
3 = 16:9
4 = 2.211 (not used in dvd)

Frame Rate
1 = 23.976
2 = 24
3 = 25
4 = 29.97
5 = 30
6 = 50
7 = 59.94
8 = 60


In theory, a svcd to dvd patch would change the resolution from 480x480 to 352x480 ie from 1e0x1e0 to 160x1e0



VTS_01_0.IFO file hex address 200

Open your VTS_01_0.IFO in HexEditor,
Locate hex address 200
Make changes as need, then save.

Here is an example: 16:9, 740x480, AC3 audio

0000200: F9 00 00 01 00 01 00 00 00 00 00 00 00 00 00 00

Aspect Ratio
43 = 4:3
F9 = 16:9

Resolution NTSC (PAL)
00 = 720x480 (720x576)
1 = 704x480 (704x576)
0A = 352x480 (352x576)
0C = 352x240 (352x288)

Audio Coding
00 = AC3
02 = Mpeg-1
03 = Mpeg-2ext
04 = LPCM
06 = DTS

[Baldrick]

Please don't cross post.
https://www.videohelp.com/forum/viewtopic.php?t=192830&highlight=