MPL - Revision history

Elte: /* Time Stamp Parser */

2011-01-31T14:03:17Z

Time Stamp Parser

← Older revision		Revision as of 07:03, 31 January 2011
Line 323:		Line 323:
	// actual info starts at 9th byte of mts description		// actual info starts at 9th byte of mts description
	fseek (mpl_file_ptr, -50 - 66*num_desc - 48 +2, SEEK_END);		fseek (mpl_file_ptr, -50 - 66*num_desc - 48 +2, SEEK_END);

	while (num_desc > 0) {		while (num_desc > 0) {

Elte: /* Time Stamp Parser */

2011-01-31T14:02:10Z

Time Stamp Parser

← Older revision		Revision as of 07:02, 31 January 2011
Line 289:		Line 289:
	while ((dp = readdir(dir_ptr)) != NULL) {		while ((dp = readdir(dir_ptr)) != NULL) {

	if (!strncmp ((dp->d_name) + (strlen (dp->d_name) - 4), ".MPL", 4)) {		if (!strncmp ((dp->d_name) + (strlen (dp->d_name) - 4), ".MPL", 4)) {

	unsigned char file_number[2] = {0, 0},		unsigned char file_number[2] = {0, 0},

Elte: Mpl moved to MPL: upper case

2011-01-31T14:00:12Z

Mpl moved to MPL: upper case

← Older revision	Revision as of 07:00, 31 January 2011
(No difference)

Elte: /* Time Stamp Parser */

2011-01-31T13:59:10Z

Time Stamp Parser

← Older revision		Revision as of 06:59, 31 January 2011
Line 289:		Line 289:
	while ((dp = readdir(dir_ptr)) != NULL) {		while ((dp = readdir(dir_ptr)) != NULL) {

	if (!strncmp ((dp->d_name) + (strlen (dp->d_name) - 4), ".MPL", 4)) {		if (!strncmp ((dp->d_name) + (strlen (dp->d_name) - 4), ".MPL", 4)) {

	unsigned char file_number[2] = {0, 0},		unsigned char file_number[2] = {0, 0},
Line 323:		Line 323:
	// actual info starts at 9th byte of mts description		// actual info starts at 9th byte of mts description
	fseek (mpl_file_ptr, -50 - 66*num_desc - 48 +2, SEEK_END);		fseek (mpl_file_ptr, -50 - 66*num_desc - 48 +2, SEEK_END);

	while (num_desc > 0) {		while (num_desc > 0) {

	int i;		int i;
			const unsigned char time_stamp_sig[] = {1, 3, 5, 0x81, 0, 0, 0, 0};

	num_desc--;		num_desc--;
	fseek (mpl_file_ptr, 48, SEEK_CUR);		fseek (mpl_file_ptr, 48, SEEK_CUR);

	// scan for ~~{0x01, 0x03, 0x05, 0x81, 0, 0, 0, 0}~~		// scan for time stamp signatur
	for (i=0; i<3; i++) {		for (i=0; i<8; i++) {
	if ((ret = fgetc(mpl_file_ptr)) != ~~"\x01\x03\x05"~~[i]~~) {~~		if ((ret = fgetc(mpl_file_ptr)) != time_stamp_sig[i]) {
	~~fprintf (stderr, "Could not parse contents\n");~~
	~~goto NEXT_FILE;~~
	}
	}
	~~if ((ret = fgetc(mpl_file_ptr)) != 0x81) {~~
	~~fprintf (stderr, "Could not parse contents\n");~~
	~~goto NEXT_FILE;~~
	}
	~~for (i=0; i<4; i++) {~~
	~~if ((ret = fgetc(mpl_file_ptr)) != 0~~) {
	fprintf (stderr, "Could not parse contents\n");		fprintf (stderr, "Could not parse contents\n");
	goto NEXT_FILE;		goto NEXT_FILE;

Elte: /* Time Stamp Parser */

2011-01-29T11:19:58Z

Time Stamp Parser

← Older revision		Revision as of 04:19, 29 January 2011
Line 240:		Line 240:
	= Time Stamp Parser =		= Time Stamp Parser =

	This is a small C programm to parse all time ~~astamps for~~ MTS ~~file~~ that are in playlist files in a directory. This programm is developed based on this file:		This is a small C programm to parse all time stamps of MTS files that are written in playlist files in a directory. This programm is developed based on this file:

	http://www.avsforum.com/avs-vb/showthread.php?p=14578210#post14578210		http://www.avsforum.com/avs-vb/showthread.php?p=14578210#post14578210

Elte: /* Time Stamp Parser */

2011-01-29T11:19:06Z

Time Stamp Parser

← Older revision		Revision as of 04:19, 29 January 2011
Line 293:		Line 293:
	unsigned char file_number[2] = {0, 0},		unsigned char file_number[2] = {0, 0},
	num_desc = 0;		num_desc = 0;
	MTS_date this = {0, 0, 0, 0, 0, 0};		MTS_date this = {0, 0, 0, 0, 0, 0};

	if ((mpl_file_ptr = fopen (dp->d_name, "r")) == NULL) {		if ((mpl_file_ptr = fopen (dp->d_name, "r")) == NULL) {

Elte: time stamp parser

2011-01-29T11:17:18Z

time stamp parser

← Older revision		Revision as of 04:17, 29 January 2011
Line 237:		Line 237:

	[[Category:Meta Format]]		[[Category:Meta Format]]

			= Time Stamp Parser =

			This is a small C programm to parse all time astamps for MTS file that are in playlist files in a directory. This programm is developed based on this file:

			http://www.avsforum.com/avs-vb/showthread.php?p=14578210#post14578210

			/* GPL 2.1 © Elte 2011 */

			#include <stdio.h>
			#include <string.h>
			#include <errno.h>
			#include <dirent.h>

			#define VERSION "0.1"
			#define SIGNATUR "MPLS0100"

			typedef struct {
			unsigned char decade, month, day, hour, minute, second;
			} MTS_date;

			int main (int argc, char *argv[])
			{
			struct dirent *dp = NULL;
			DIR *dir_ptr = NULL;
			FILE *mpl_file_ptr = NULL;

			int ret = 0;

			unsigned char signatur[] = SIGNATUR, buffer[sizeof(SIGNATUR)];

			if (argc != 2) {
			fprintf(stderr, "Version: %s\n", VERSION);
			fprintf(stderr, "Usage: %s <path to folder containing *.MPL files\n", argv[0]);
			goto ERROR;
			}

			if (chdir(argv[1]) == -1) {
			fprintf(stderr, "Cannot change directory: %s %s\n", argv[1], strerror(errno));
			goto ERROR;
			}

			if ((dir_ptr = opendir (".")) == NULL) {
			fprintf (stderr, "Error reading directory: %s %s\n", argv[1], strerror(errno));
			goto ERROR;
			}

			// printf (" STREAM DATE TIME\n");
			// printf ("--------- ---------- --------\n");

			while ((dp = readdir(dir_ptr)) != NULL) {

			if (!strncmp ((dp->d_name) + (strlen (dp->d_name) - 4), ".MPL", 4)) {

			unsigned char file_number[2] = {0, 0},
			num_desc = 0;
			MTS_date this = {0, 0, 0, 0, 0, 0};

			if ((mpl_file_ptr = fopen (dp->d_name, "r")) == NULL) {
			fprintf (stderr, "Error opening file: %s %s\n", dp->d_name, strerror(errno));
			goto NEXT_FILE;
			}

			if ((fread (buffer, sizeof(SIGNATUR), 1, mpl_file_ptr) != 1) \|\|
			(strncmp (buffer, SIGNATUR, sizeof(SIGNATUR)))) {
			fprintf (stderr, "Could not read file signatur. Wrong filetype?\n");
			goto NEXT_FILE;
			}

			// find out how many mts files are described
			// the 66th byte contains this number
			fseek (mpl_file_ptr, 66 - sizeof(SIGNATUR) - 1, SEEK_CUR);
			ret = fgetc(mpl_file_ptr);
			if (ret != EOF) {
			num_desc = (unsigned char) ret;
			} else {
			fprintf (stderr, "Could not read contents\n");
			goto NEXT_FILE;
			}

			// jump to the first occurance of a time stamp and print it
			// iterate till all num_desc time stamps are shown
			// trailer = 50 bytes
			// mts description = 66 bytes
			// actual info starts at 9th byte of mts description
			fseek (mpl_file_ptr, -50 - 66*num_desc - 48 +2, SEEK_END);

			while (num_desc > 0) {

			int i;
			num_desc--;
			fseek (mpl_file_ptr, 48, SEEK_CUR);

			// scan for {0x01, 0x03, 0x05, 0x81, 0, 0, 0, 0}
			for (i=0; i<3; i++) {
			if ((ret = fgetc(mpl_file_ptr)) != "\x01\x03\x05"[i]) {
			fprintf (stderr, "Could not parse contents\n");
			goto NEXT_FILE;
			}
			}
			if ((ret = fgetc(mpl_file_ptr)) != 0x81) {
			fprintf (stderr, "Could not parse contents\n");
			goto NEXT_FILE;
			}
			for (i=0; i<4; i++) {
			if ((ret = fgetc(mpl_file_ptr)) != 0) {
			fprintf (stderr, "Could not parse contents\n");
			goto NEXT_FILE;
			}
			}

			// scan time stamp
			if ((ret = fscanf (mpl_file_ptr, "%c%c\x1E%*1[ ]%c%c%c%c%c%c",
			&file_number[0], &file_number[1],
			&this.decade, &this.month, &this.day,
			&this.hour, &this.minute, &this.second)) != 8) {
			fprintf (stderr, "Could not parse time stamp\n");
			goto NEXT_FILE;
			}
			printf ("%.5d.MTS 20%.2X/%.2X/%.2X %.2X:%.2X:%.2X\n",
			(file_number[0]<<8) + file_number[1],
			this.decade, this.month, this.day,
			this.hour, this.minute, this.second);
			}
			NEXT_FILE:
			fclose (mpl_file_ptr);
			}
			}
			ERROR:
			closedir (dir_ptr);
			}

Elte: /* Introduction */

2011-01-29T09:54:07Z

Introduction

← Older revision		Revision as of 02:54, 29 January 2011
Line 5:		Line 5:
	== Introduction ==		== Introduction ==
	This site tries to collect information about this file. This information partly comes from reverse engineering. There is no free specification available on the net.		This site tries to collect information about this file. This information partly comes from reverse engineering. There is no free specification available on the net.

			The intention was to extract the time stamps of the captured videos from the mpl files. The Panasonic GH1 doesn't write the time stamp into the SEI part of the h264 stream. Other cams are known to do this (e.g. Canon HG-20):

			http://forum.videohelp.com/threads/296805-Reading-AVCHD-Playlist-files-BDMV-Playlist-*-mpl

	This document might be helpful to understand the connection between a playlist file a cpi file and the actual stream file.		This document might be helpful to understand the connection between a playlist file a cpi file and the actual stream file.

Elte at 09:51, 29 January 2011

2011-01-29T09:51:08Z

← Older revision		Revision as of 02:51, 29 January 2011
Line 3:		Line 3:

	'''Please correct or beautify the language used in this article!'''		'''Please correct or beautify the language used in this article!'''
			== Introduction ==
			This site tries to collect information about this file. This information partly comes from reverse engineering. There is no free specification available on the net.

	This ~~site tries~~ to ~~collect information about this~~ file. ~~This information partly comes from reverse engineering~~. ~~There is no free specification available on the net~~.		This document might be helpful to understand the connection between a playlist file a cpi file and the actual stream file.

			http://www.blu-raydisc.com/Assets/Downloadablefile/BD-RE_Part3_V2.1_WhitePaper_080406-15271.pdf

			= Technical Part =

	The file is located in a directory structure like this:		The file is located in a directory structure like this:
Line 10:		Line 16:
	it corresponds with the files in this directory:		it corresponds with the files in this directory:
	/BDMV/STREAM/00000.MTS		/BDMV/STREAM/00000.MTS

			In Bluray specification the files hav a differnt endig: .mpls and .m2ts.

	The following information are reverse engineered from MPL files from a [[Panasonic]] GH1 foto cam.		The following information are reverse engineered from MPL files from a [[Panasonic]] GH1 foto cam.

	~~The following~~ file sizes are known:		This file sizes are known:
	* 638 bytes		* 638 bytes
	* 800 bytes		* 800 bytes

Elte: /* Video Part */

2011-01-28T16:30:01Z

Video Part

← Older revision		Revision as of 09:30, 28 January 2011
Line 186:		Line 186:
	char[1] {I} I = BCD (Second)		char[1] {I} I = BCD (Second)
	char[2] {0x90, 0x0A} or {0x90, 0x0C}		char[2] {0x90, 0x0A} or {0x90, 0x0C}
	char[11] date as string (no time) e.g. '2010. 4.18'		char[10] date as string (no time) e.g. '2010. 4.18'
	char[2] {0, 0}		char[2] {0, 0}