[libav.git] / qt-faststart.c

/*
 * qt-faststart.c, v0.1
 * by Mike Melanson (melanson@pcisys.net)
 * This file is placed in the public domain. Use the program however you
 * see fit.
 *
 * This utility rearranges a Quicktime file such that the moov atom
 * is in front of the data, thus facilitating network streaming.
 *
 * Compile this program using:
 *  make qt-faststart
 * Invoke the program with:
 *  qt-faststart <infile.mov> <outfile.mov>
 *
 * Notes: Quicktime files can come in many configurations of top-level
 * atoms. This utility stipulates that the very last atom in the file needs
 * to be a moov atom. When given such a file, this utility will rearrange
 * the top-level atoms by shifting the moov atom from the back of the file
 * to the front, and patch the chunk offsets along the way. This utility
 * presently only operates on uncompressed moov atoms.
 */

#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>

#ifdef __MINGW32__
#define fseeko(x,y,z)  fseeko64(x,y,z)
#define ftello(x)      ftello64(x)
#endif

#define BE_16(x) ((((uint8_t*)(x))[0] << 8) | ((uint8_t*)(x))[1])
#define BE_32(x) ((((uint8_t*)(x))[0] << 24) | \
                  (((uint8_t*)(x))[1] << 16) | \
                  (((uint8_t*)(x))[2] << 8) | \
                   ((uint8_t*)(x))[3])
#define BE_64(x) (((uint64_t)(((uint8_t*)(x))[0]) << 56) | \
                  ((uint64_t)(((uint8_t*)(x))[1]) << 48) | \
                  ((uint64_t)(((uint8_t*)(x))[2]) << 40) | \
                  ((uint64_t)(((uint8_t*)(x))[3]) << 32) | \
                  ((uint64_t)(((uint8_t*)(x))[4]) << 24) | \
                  ((uint64_t)(((uint8_t*)(x))[5]) << 16) | \
                  ((uint64_t)(((uint8_t*)(x))[6]) << 8) | \
                  ((uint64_t)((uint8_t*)(x))[7]))

#define BE_FOURCC( ch0, ch1, ch2, ch3 )             \
        ( (uint32_t)(unsigned char)(ch3) |          \
        ( (uint32_t)(unsigned char)(ch2) << 8 ) |   \
        ( (uint32_t)(unsigned char)(ch1) << 16 ) |  \
        ( (uint32_t)(unsigned char)(ch0) << 24 ) )

#define QT_ATOM BE_FOURCC
/* top level atoms */
#define FREE_ATOM QT_ATOM('f', 'r', 'e', 'e')
#define JUNK_ATOM QT_ATOM('j', 'u', 'n', 'k')
#define MDAT_ATOM QT_ATOM('m', 'd', 'a', 't')
#define MOOV_ATOM QT_ATOM('m', 'o', 'o', 'v')
#define PNOT_ATOM QT_ATOM('p', 'n', 'o', 't')
#define SKIP_ATOM QT_ATOM('s', 'k', 'i', 'p')
#define WIDE_ATOM QT_ATOM('w', 'i', 'd', 'e')
#define PICT_ATOM QT_ATOM('P', 'I', 'C', 'T')
#define FTYP_ATOM QT_ATOM('f', 't', 'y', 'p')

#define CMOV_ATOM QT_ATOM('c', 'm', 'o', 'v')
#define STCO_ATOM QT_ATOM('s', 't', 'c', 'o')
#define CO64_ATOM QT_ATOM('c', 'o', '6', '4')

#define ATOM_PREAMBLE_SIZE 8
#define COPY_BUFFER_SIZE 1024

int main(int argc, char *argv[])
{
    FILE *infile;
    FILE *outfile;
    unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
    uint32_t atom_type = 0;
    uint64_t atom_size = 0;
    uint64_t last_offset;
    unsigned char *moov_atom;
    unsigned char *ftyp_atom = 0;
    uint64_t moov_atom_size;
    uint64_t ftyp_atom_size = 0;
    uint64_t i, j;
    uint32_t offset_count;
    uint64_t current_offset;
    uint64_t start_offset = 0;
    unsigned char copy_buffer[COPY_BUFFER_SIZE];
    int bytes_to_copy;

    if (argc != 3) {
        printf ("Usage: qt-faststart <infile.mov> <outfile.mov>\n");
        return 0;
    }

    infile = fopen(argv[1], "rb");
    if (!infile) {
        perror(argv[1]);
        return 1;
    }

    /* traverse through the atoms in the file to make sure that 'moov' is
     * at the end */
    while (!feof(infile)) {
        if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
            break;
        }
        atom_size = (uint32_t)BE_32(&atom_bytes[0]);
        atom_type = BE_32(&atom_bytes[4]);

        if ((atom_type != FREE_ATOM) &&
            (atom_type != JUNK_ATOM) &&
            (atom_type != MDAT_ATOM) &&
            (atom_type != MOOV_ATOM) &&
            (atom_type != PNOT_ATOM) &&
            (atom_type != SKIP_ATOM) &&
            (atom_type != WIDE_ATOM) &&
            (atom_type != PICT_ATOM) &&
            (atom_type != FTYP_ATOM)) {
            printf ("encountered non-QT top-level atom (is this a Quicktime file?)\n");
            break;
        }

        /* keep ftyp atom */
        if (atom_type == FTYP_ATOM) {
            ftyp_atom_size = atom_size;
            ftyp_atom = malloc(ftyp_atom_size);
            if (!ftyp_atom) {
                printf ("could not allocate 0x%llX byte for ftyp atom\n",
                        atom_size);
                fclose(infile);
                return 1;
            }
            fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
            if (fread(ftyp_atom, atom_size, 1, infile) != 1) {
                perror(argv[1]);
                free(ftyp_atom);
                fclose(infile);
                return 1;
            }
            start_offset = ftello(infile);
            continue;
        }

        /* 64-bit special case */
        if (atom_size == 1) {
            if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
                break;
            }
            atom_size = BE_64(&atom_bytes[0]);
            fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR);
        } else {
            fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR);
        }
    }

    if (atom_type != MOOV_ATOM) {
        printf ("last atom in file was not a moov atom\n");
        fclose(infile);
        return 0;
    }

    /* moov atom was, in fact, the last atom in the chunk; load the whole
     * moov atom */
    fseeko(infile, -atom_size, SEEK_END);
    last_offset = ftello(infile);
    moov_atom_size = atom_size;
    moov_atom = malloc(moov_atom_size);
    if (!moov_atom) {
        printf ("could not allocate 0x%llX byte for moov atom\n",
            atom_size);
        fclose(infile);
        return 1;
    }
    if (fread(moov_atom, atom_size, 1, infile) != 1) {
        perror(argv[1]);
        free(moov_atom);
        fclose(infile);
        return 1;
    }

    /* this utility does not support compressed atoms yet, so disqualify
     * files with compressed QT atoms */
    if (BE_32(&moov_atom[12]) == CMOV_ATOM) {
        printf ("this utility does not support compressed moov atoms yet\n");
        free(moov_atom);
        fclose(infile);
        return 1;
    }

    /* close; will be re-opened later */
    fclose(infile);

    /* crawl through the moov chunk in search of stco or co64 atoms */
    for (i = 4; i < moov_atom_size - 4; i++) {
        atom_type = BE_32(&moov_atom[i]);
        if (atom_type == STCO_ATOM) {
            printf (" patching stco atom...\n");
            atom_size = BE_32(&moov_atom[i - 4]);
            if (i + atom_size - 4 > moov_atom_size) {
                printf (" bad atom size\n");
                free(moov_atom);
                return 1;
            }
            offset_count = BE_32(&moov_atom[i + 8]);
            for (j = 0; j < offset_count; j++) {
                current_offset = BE_32(&moov_atom[i + 12 + j * 4]);
                current_offset += moov_atom_size;
                moov_atom[i + 12 + j * 4 + 0] = (current_offset >> 24) & 0xFF;
                moov_atom[i + 12 + j * 4 + 1] = (current_offset >> 16) & 0xFF;
                moov_atom[i + 12 + j * 4 + 2] = (current_offset >>  8) & 0xFF;
                moov_atom[i + 12 + j * 4 + 3] = (current_offset >>  0) & 0xFF;
            }
            i += atom_size - 4;
        } else if (atom_type == CO64_ATOM) {
            printf (" patching co64 atom...\n");
            atom_size = BE_32(&moov_atom[i - 4]);
            if (i + atom_size - 4 > moov_atom_size) {
                printf (" bad atom size\n");
                free(moov_atom);
                return 1;
            }
            offset_count = BE_32(&moov_atom[i + 8]);
            for (j = 0; j < offset_count; j++) {
                current_offset = BE_64(&moov_atom[i + 12 + j * 8]);
                current_offset += moov_atom_size;
                moov_atom[i + 12 + j * 8 + 0] = (current_offset >> 56) & 0xFF;
                moov_atom[i + 12 + j * 8 + 1] = (current_offset >> 48) & 0xFF;
                moov_atom[i + 12 + j * 8 + 2] = (current_offset >> 40) & 0xFF;
                moov_atom[i + 12 + j * 8 + 3] = (current_offset >> 32) & 0xFF;
                moov_atom[i + 12 + j * 8 + 4] = (current_offset >> 24) & 0xFF;
                moov_atom[i + 12 + j * 8 + 5] = (current_offset >> 16) & 0xFF;
                moov_atom[i + 12 + j * 8 + 6] = (current_offset >>  8) & 0xFF;
                moov_atom[i + 12 + j * 8 + 7] = (current_offset >>  0) & 0xFF;
            }
            i += atom_size - 4;
        }
    }

    /* re-open the input file and open the output file */
    infile = fopen(argv[1], "rb");
    if (!infile) {
        perror(argv[1]);
        free(moov_atom);
        return 1;
    }

    if (start_offset > 0) { /* seek after ftyp atom */
        fseeko(infile, start_offset, SEEK_SET);
        last_offset -= start_offset;
    }

    outfile = fopen(argv[2], "wb");
    if (!outfile) {
        perror(argv[2]);
        fclose(outfile);
        free(moov_atom);
        return 1;
    }

    /* dump the same ftyp atom */
    if (ftyp_atom_size > 0) {
        printf (" writing ftyp atom...\n");
        if (fwrite(ftyp_atom, ftyp_atom_size, 1, outfile) != 1) {
            perror(argv[2]);
            goto error_out;
        }
    }

    /* dump the new moov atom */
    printf (" writing moov atom...\n");
    if (fwrite(moov_atom, moov_atom_size, 1, outfile) != 1) {
        perror(argv[2]);
        goto error_out;
    }

    /* copy the remainder of the infile, from offset 0 -> last_offset - 1 */
    printf (" copying rest of file...\n");
    while (last_offset) {
        if (last_offset > COPY_BUFFER_SIZE)
            bytes_to_copy = COPY_BUFFER_SIZE;
        else
            bytes_to_copy = last_offset;

        if (fread(copy_buffer, bytes_to_copy, 1, infile) != 1) {
            perror(argv[1]);
            goto error_out;
        }
        if (fwrite(copy_buffer, bytes_to_copy, 1, outfile) != 1) {
            perror(argv[2]);
            goto error_out;
        }

        last_offset -= bytes_to_copy;
    }

    fclose(infile);
    fclose(outfile);
    free(moov_atom);
    if (ftyp_atom_size > 0)
        free(ftyp_atom);

    return 0;

error_out:
    fclose(infile);
    fclose(outfile);
    free(moov_atom);
    if (ftyp_atom_size > 0)
        free(ftyp_atom);
    return 1;
}
Commit	Line	Data
38100e8c MM	1	/*
	2	* qt-faststart.c, v0.1
	3	* by Mike Melanson (melanson@pcisys.net)
	4	* This file is placed in the public domain. Use the program however you
	5	* see fit.
	6	*
	7	* This utility rearranges a Quicktime file such that the moov atom
	8	* is in front of the data, thus facilitating network streaming.
	9	*
	10	* Compile this program using:
bbec8c2c	11	* make qt-faststart
38100e8c MM	12	* Invoke the program with:
	13	* qt-faststart <infile.mov> <outfile.mov>
	14	*
	15	* Notes: Quicktime files can come in many configurations of top-level
	16	* atoms. This utility stipulates that the very last atom in the file needs
	17	* to be a moov atom. When given such a file, this utility will rearrange
	18	* the top-level atoms by shifting the moov atom from the back of the file
	19	* to the front, and patch the chunk offsets along the way. This utility
	20	* presently only operates on uncompressed moov atoms.
	21	*/
	22
	23	#include <stdio.h>
	24	#include <stdlib.h>
	25	#include <inttypes.h>
	26
a8fcaf40 SH	27	#ifdef __MINGW32__
	28	#define fseeko(x,y,z) fseeko64(x,y,z)
	29	#define ftello(x) ftello64(x)
	30	#endif
	31
38100e8c MM	32	#define BE_16(x) ((((uint8_t)(x))[0] << 8) \| ((uint8_t)(x))[1])
	33	#define BE_32(x) ((((uint8_t*)(x))[0] << 24) \| \
	34	(((uint8_t*)(x))[1] << 16) \| \
	35	(((uint8_t*)(x))[2] << 8) \| \
	36	((uint8_t*)(x))[3])
	37	#define BE_64(x) (((uint64_t)(((uint8_t*)(x))[0]) << 56) \| \
	38	((uint64_t)(((uint8_t*)(x))[1]) << 48) \| \
	39	((uint64_t)(((uint8_t*)(x))[2]) << 40) \| \
	40	((uint64_t)(((uint8_t*)(x))[3]) << 32) \| \
	41	((uint64_t)(((uint8_t*)(x))[4]) << 24) \| \
	42	((uint64_t)(((uint8_t*)(x))[5]) << 16) \| \
	43	((uint64_t)(((uint8_t*)(x))[6]) << 8) \| \
	44	((uint64_t)((uint8_t*)(x))[7]))
	45
	46	#define BE_FOURCC( ch0, ch1, ch2, ch3 ) \
	47	( (uint32_t)(unsigned char)(ch3) \| \
	48	( (uint32_t)(unsigned char)(ch2) << 8 ) \| \
	49	( (uint32_t)(unsigned char)(ch1) << 16 ) \| \
	50	( (uint32_t)(unsigned char)(ch0) << 24 ) )
	51
	52	#define QT_ATOM BE_FOURCC
	53	/* top level atoms */
	54	#define FREE_ATOM QT_ATOM('f', 'r', 'e', 'e')
	55	#define JUNK_ATOM QT_ATOM('j', 'u', 'n', 'k')
	56	#define MDAT_ATOM QT_ATOM('m', 'd', 'a', 't')
	57	#define MOOV_ATOM QT_ATOM('m', 'o', 'o', 'v')
	58	#define PNOT_ATOM QT_ATOM('p', 'n', 'o', 't')
	59	#define SKIP_ATOM QT_ATOM('s', 'k', 'i', 'p')
	60	#define WIDE_ATOM QT_ATOM('w', 'i', 'd', 'e')
	61	#define PICT_ATOM QT_ATOM('P', 'I', 'C', 'T')
	62	#define FTYP_ATOM QT_ATOM('f', 't', 'y', 'p')
	63
	64	#define CMOV_ATOM QT_ATOM('c', 'm', 'o', 'v')
	65	#define STCO_ATOM QT_ATOM('s', 't', 'c', 'o')
	66	#define CO64_ATOM QT_ATOM('c', 'o', '6', '4')
	67
	68	#define ATOM_PREAMBLE_SIZE 8
	69	#define COPY_BUFFER_SIZE 1024
	70
	71	int main(int argc, char *argv[])
	72	{
	73	FILE *infile;
	74	FILE *outfile;
	75	unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
	76	uint32_t atom_type = 0;
c0339599	77	uint64_t atom_size = 0;
38100e8c MM	78	uint64_t last_offset;
38100e8c MM	79	unsigned char *moov_atom;
60a9cc58	80	unsigned char *ftyp_atom = 0;
38100e8c	81	uint64_t moov_atom_size;
60a9cc58	82	uint64_t ftyp_atom_size = 0;
38100e8c MM	83	uint64_t i, j;
	84	uint32_t offset_count;
	85	uint64_t current_offset;
60a9cc58	86	uint64_t start_offset = 0;
38100e8c MM	87	unsigned char copy_buffer[COPY_BUFFER_SIZE];
	88	int bytes_to_copy;
	89
	90	if (argc != 3) {
	91	printf ("Usage: qt-faststart <infile.mov> <outfile.mov>\n");
	92	return 0;
	93	}
	94
	95	infile = fopen(argv[1], "rb");
	96	if (!infile) {
	97	perror(argv[1]);
	98	return 1;
	99	}
	100
	101	/* traverse through the atoms in the file to make sure that 'moov' is
	102	* at the end */
	103	while (!feof(infile)) {
	104	if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
	105	break;
	106	}
7db2245d	107	atom_size = (uint32_t)BE_32(&atom_bytes[0]);
38100e8c MM	108	atom_type = BE_32(&atom_bytes[4]);
	109
	110	if ((atom_type != FREE_ATOM) &&
	111	(atom_type != JUNK_ATOM) &&
	112	(atom_type != MDAT_ATOM) &&
	113	(atom_type != MOOV_ATOM) &&
	114	(atom_type != PNOT_ATOM) &&
	115	(atom_type != SKIP_ATOM) &&
	116	(atom_type != WIDE_ATOM) &&
	117	(atom_type != PICT_ATOM) &&
	118	(atom_type != FTYP_ATOM)) {
	119	printf ("encountered non-QT top-level atom (is this a Quicktime file?)\n");
	120	break;
	121	}
	122
60a9cc58 BC	123	/* keep ftyp atom */
	124	if (atom_type == FTYP_ATOM) {
	125	ftyp_atom_size = atom_size;
	126	ftyp_atom = malloc(ftyp_atom_size);
	127	if (!ftyp_atom) {
	128	printf ("could not allocate 0x%llX byte for ftyp atom\n",
	129	atom_size);
	130	fclose(infile);
	131	return 1;
	132	}
	133	fseeko(infile, -ATOM_PREAMBLE_SIZE, SEEK_CUR);
	134	if (fread(ftyp_atom, atom_size, 1, infile) != 1) {
	135	perror(argv[1]);
	136	free(ftyp_atom);
	137	fclose(infile);
	138	return 1;
	139	}
	140	start_offset = ftello(infile);
	141	continue;
	142	}
	143
38100e8c MM	144	/* 64-bit special case */
	145	if (atom_size == 1) {
	146	if (fread(atom_bytes, ATOM_PREAMBLE_SIZE, 1, infile) != 1) {
	147	break;
	148	}
	149	atom_size = BE_64(&atom_bytes[0]);
e2daf554	150	fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE * 2, SEEK_CUR);
38100e8c	151	} else {
e2daf554	152	fseeko(infile, atom_size - ATOM_PREAMBLE_SIZE, SEEK_CUR);
38100e8c MM	153	}
	154	}
	155
	156	if (atom_type != MOOV_ATOM) {
	157	printf ("last atom in file was not a moov atom\n");
	158	fclose(infile);
	159	return 0;
	160	}
	161
	162	/* moov atom was, in fact, the last atom in the chunk; load the whole
	163	* moov atom */
e2daf554 BC	164	fseeko(infile, -atom_size, SEEK_END);
e2daf554 BC	165	last_offset = ftello(infile);
38100e8c MM	166	moov_atom_size = atom_size;
	167	moov_atom = malloc(moov_atom_size);
	168	if (!moov_atom) {
	169	printf ("could not allocate 0x%llX byte for moov atom\n",
	170	atom_size);
	171	fclose(infile);
	172	return 1;
	173	}
	174	if (fread(moov_atom, atom_size, 1, infile) != 1) {
	175	perror(argv[1]);
	176	free(moov_atom);
	177	fclose(infile);
	178	return 1;
	179	}
	180
	181	/* this utility does not support compressed atoms yet, so disqualify
	182	* files with compressed QT atoms */
	183	if (BE_32(&moov_atom[12]) == CMOV_ATOM) {
	184	printf ("this utility does not support compressed moov atoms yet\n");
	185	free(moov_atom);
	186	fclose(infile);
	187	return 1;
	188	}
	189
	190	/* close; will be re-opened later */
	191	fclose(infile);
	192
	193	/* crawl through the moov chunk in search of stco or co64 atoms */
	194	for (i = 4; i < moov_atom_size - 4; i++) {
	195	atom_type = BE_32(&moov_atom[i]);
	196	if (atom_type == STCO_ATOM) {
	197	printf (" patching stco atom...\n");
	198	atom_size = BE_32(&moov_atom[i - 4]);
	199	if (i + atom_size - 4 > moov_atom_size) {
	200	printf (" bad atom size\n");
	201	free(moov_atom);
	202	return 1;
	203	}
	204	offset_count = BE_32(&moov_atom[i + 8]);
	205	for (j = 0; j < offset_count; j++) {
	206	current_offset = BE_32(&moov_atom[i + 12 + j * 4]);
	207	current_offset += moov_atom_size;
	208	moov_atom[i + 12 + j * 4 + 0] = (current_offset >> 24) & 0xFF;
	209	moov_atom[i + 12 + j * 4 + 1] = (current_offset >> 16) & 0xFF;
	210	moov_atom[i + 12 + j * 4 + 2] = (current_offset >> 8) & 0xFF;
	211	moov_atom[i + 12 + j * 4 + 3] = (current_offset >> 0) & 0xFF;
	212	}
	213	i += atom_size - 4;
	214	} else if (atom_type == CO64_ATOM) {
	215	printf (" patching co64 atom...\n");
	216	atom_size = BE_32(&moov_atom[i - 4]);
	217	if (i + atom_size - 4 > moov_atom_size) {
	218	printf (" bad atom size\n");
	219	free(moov_atom);
	220	return 1;
	221	}
	222	offset_count = BE_32(&moov_atom[i + 8]);
	223	for (j = 0; j < offset_count; j++) {
	224	current_offset = BE_64(&moov_atom[i + 12 + j * 8]);
	225	current_offset += moov_atom_size;
	226	moov_atom[i + 12 + j * 8 + 0] = (current_offset >> 56) & 0xFF;
	227	moov_atom[i + 12 + j * 8 + 1] = (current_offset >> 48) & 0xFF;
	228	moov_atom[i + 12 + j * 8 + 2] = (current_offset >> 40) & 0xFF;
	229	moov_atom[i + 12 + j * 8 + 3] = (current_offset >> 32) & 0xFF;
230	moov_atom[i + 12 + j * 8 + 4] = (current_offset >> 24) & 0xFF;
231	moov_atom[i + 12 + j * 8 + 5] = (current_offset >> 16) & 0xFF;
232	moov_atom[i + 12 + j * 8 + 6] = (current_offset >> 8) & 0xFF;
233	moov_atom[i + 12 + j * 8 + 7] = (current_offset >> 0) & 0xFF;
234	}
235	i += atom_size - 4;
236	}
237	}
238
239	/* re-open the input file and open the output file */
240	infile = fopen(argv[1], "rb");
241	if (!infile) {
242	perror(argv[1]);
243	free(moov_atom);
244	return 1;
245	}
fd7789db BC	246
	247	if (start_offset > 0) { /* seek after ftyp atom */
	248	fseeko(infile, start_offset, SEEK_SET);
	249	last_offset -= start_offset;
	250	}
60a9cc58	251
38100e8c MM	252	outfile = fopen(argv[2], "wb");
	253	if (!outfile) {
	254	perror(argv[2]);
	255	fclose(outfile);
	256	free(moov_atom);
	257	return 1;
	258	}
	259
60a9cc58 BC	260	/* dump the same ftyp atom */
	261	if (ftyp_atom_size > 0) {
	262	printf (" writing ftyp atom...\n");
	263	if (fwrite(ftyp_atom, ftyp_atom_size, 1, outfile) != 1) {
	264	perror(argv[2]);
	265	goto error_out;
	266	}
	267	}
	268
38100e8c	269	/* dump the new moov atom */
d4fcd7c6	270	printf (" writing moov atom...\n");
38100e8c MM	271	if (fwrite(moov_atom, moov_atom_size, 1, outfile) != 1) {
	272	perror(argv[2]);
	273	goto error_out;
	274	}
	275
	276	/* copy the remainder of the infile, from offset 0 -> last_offset - 1 */
	277	printf (" copying rest of file...\n");
	278	while (last_offset) {
	279	if (last_offset > COPY_BUFFER_SIZE)
	280	bytes_to_copy = COPY_BUFFER_SIZE;
	281	else
	282	bytes_to_copy = last_offset;
	283
	284	if (fread(copy_buffer, bytes_to_copy, 1, infile) != 1) {
	285	perror(argv[1]);
	286	goto error_out;
	287	}
	288	if (fwrite(copy_buffer, bytes_to_copy, 1, outfile) != 1) {
	289	perror(argv[2]);
	290	goto error_out;
	291	}
	292
	293	last_offset -= bytes_to_copy;
	294	}
	295
	296	fclose(infile);
	297	fclose(outfile);
	298	free(moov_atom);
21c5aca6 BC	299	if (ftyp_atom_size > 0)
21c5aca6 BC	300	free(ftyp_atom);
38100e8c MM	301
	302	return 0;
	303
	304	error_out:
	305	fclose(infile);
	306	fclose(outfile);
	307	free(moov_atom);
21c5aca6 BC	308	if (ftyp_atom_size > 0)
21c5aca6 BC	309	free(ftyp_atom);
38100e8c MM	310	return 1;
38100e8c MM	311	}