35 #define fseeko(x, y, z) fseeko64(x, y, z)
37 #define ftello(x) ftello64(x)
40 #define fseeko(x, y, z) _fseeki64(x, y, z)
42 #define ftello(x) _ftelli64(x)
45 #define MIN(a,b) ((a) > (b) ? (b) : (a))
47 #define BE_32(x) (((uint32_t)(((uint8_t*)(x))[0]) << 24) | \
48 (((uint8_t*)(x))[1] << 16) | \
49 (((uint8_t*)(x))[2] << 8) | \
52 #define BE_64(x) (((uint64_t)(((uint8_t*)(x))[0]) << 56) | \
53 ((uint64_t)(((uint8_t*)(x))[1]) << 48) | \
54 ((uint64_t)(((uint8_t*)(x))[2]) << 40) | \
55 ((uint64_t)(((uint8_t*)(x))[3]) << 32) | \
56 ((uint64_t)(((uint8_t*)(x))[4]) << 24) | \
57 ((uint64_t)(((uint8_t*)(x))[5]) << 16) | \
58 ((uint64_t)(((uint8_t*)(x))[6]) << 8) | \
59 ((uint64_t)( (uint8_t*)(x))[7]))
61 #define AV_WB32(p, val) { \
62 ((uint8_t*)(p))[0] = ((val) >> 24) & 0xff; \
63 ((uint8_t*)(p))[1] = ((val) >> 16) & 0xff; \
64 ((uint8_t*)(p))[2] = ((val) >> 8) & 0xff; \
65 ((uint8_t*)(p))[3] = (val) & 0xff; \
68 #define AV_WB64(p, val) { \
69 AV_WB32(p, (val) >> 32) \
73 #define BE_FOURCC(ch0, ch1, ch2, ch3) \
74 ( (uint32_t)(unsigned char)(ch3) | \
75 ((uint32_t)(unsigned char)(ch2) << 8) | \
76 ((uint32_t)(unsigned char)(ch1) << 16) | \
77 ((uint32_t)(unsigned char)(ch0) << 24) )
79 #define QT_ATOM BE_FOURCC
81 #define FREE_ATOM QT_ATOM('f', 'r', 'e', 'e')
82 #define JUNK_ATOM QT_ATOM('j', 'u', 'n', 'k')
83 #define MDAT_ATOM QT_ATOM('m', 'd', 'a', 't')
84 #define MOOV_ATOM QT_ATOM('m', 'o', 'o', 'v')
85 #define PNOT_ATOM QT_ATOM('p', 'n', 'o', 't')
86 #define SKIP_ATOM QT_ATOM('s', 'k', 'i', 'p')
87 #define WIDE_ATOM QT_ATOM('w', 'i', 'd', 'e')
88 #define PICT_ATOM QT_ATOM('P', 'I', 'C', 'T')
89 #define FTYP_ATOM QT_ATOM('f', 't', 'y', 'p')
90 #define UUID_ATOM QT_ATOM('u', 'u', 'i', 'd')
92 #define CMOV_ATOM QT_ATOM('c', 'm', 'o', 'v')
93 #define TRAK_ATOM QT_ATOM('t', 'r', 'a', 'k')
94 #define MDIA_ATOM QT_ATOM('m', 'd', 'i', 'a')
95 #define MINF_ATOM QT_ATOM('m', 'i', 'n', 'f')
96 #define STBL_ATOM QT_ATOM('s', 't', 'b', 'l')
97 #define STCO_ATOM QT_ATOM('s', 't', 'c', 'o')
98 #define CO64_ATOM QT_ATOM('c', 'o', '6', '4')
100 #define ATOM_PREAMBLE_SIZE 8
101 #define COPY_BUFFER_SIZE 33554432
102 #define MAX_FTYP_ATOM_SIZE 1048576
133 unsigned char *
pos = buf;
134 unsigned char *end =
pos +
size;
147 fprintf(stderr,
"not enough room for 64 bit atom size\n");
162 fprintf(stderr,
"atom size %"PRIu64
" too small\n", atom.
size);
169 fprintf(stderr,
"atom size %"PRIu64
" too big\n", atom.
size);
187 uint32_t current_offset;
188 uint32_t offset_count;
192 printf(
" patching stco atom...\n");
193 if (atom->
size < 8) {
194 fprintf(stderr,
"stco atom size %"PRIu64
" too small\n", atom->
size);
199 if (offset_count > (atom->
size - 8) / 4) {
200 fprintf(stderr,
"stco offset count %"PRIu32
" too big\n", offset_count);
204 context->stco_offset_count += offset_count;
207 for (
pos = atom->
data + 8, end =
pos + offset_count * 4;
211 if (current_offset > UINT_MAX -
context->moov_atom_size) {
214 current_offset +=
context->moov_atom_size;
223 uint64_t current_offset;
224 uint32_t offset_count;
228 printf(
" patching co64 atom...\n");
229 if (atom->
size < 8) {
230 fprintf(stderr,
"co64 atom size %"PRIu64
" too small\n", atom->
size);
235 if (offset_count > (atom->
size - 8) / 8) {
236 fprintf(stderr,
"co64 offset count %"PRIu32
" too big\n", offset_count);
240 for (
pos = atom->
data + 8, end =
pos + offset_count * 8;
244 current_offset +=
context->moov_atom_size;
256 switch (atom->
type) {
270 fprintf(stderr,
"atoms too deeply nested\n");
288 switch (header_size) {
304 uint32_t offset_count;
305 uint32_t original_offset;
318 for (
pos = atom->
data + 8, end =
pos + offset_count * 4;
322 new_offset = (uint64_t)original_offset +
context->new_moov_size;
331 unsigned char *start_pos;
334 switch (atom->
type) {
373 unsigned char **moov_atom,
374 uint64_t *moov_atom_size)
378 unsigned char *new_moov_atom;
394 printf(
" upgrading stco atoms to co64...\n");
400 if (new_moov_atom ==
NULL) {
401 fprintf(stderr,
"could not allocate %"PRIu64
" bytes for updated moov atom\n",
407 upgrade_context.
dest = new_moov_atom;
413 &upgrade_context) < 0) {
419 *moov_atom = new_moov_atom;
422 if (upgrade_context.
dest != *moov_atom + *moov_atom_size) {
423 fprintf(stderr,
"unexpected - wrong number of moov bytes written\n");
430 int main(
int argc,
char *argv[])
435 uint32_t atom_type = 0;
436 uint64_t atom_size = 0;
437 uint64_t atom_offset = 0;
439 unsigned char *moov_atom =
NULL;
440 unsigned char *ftyp_atom =
NULL;
441 uint64_t moov_atom_size;
442 uint64_t ftyp_atom_size = 0;
443 int64_t start_offset = 0;
444 unsigned char *copy_buffer =
NULL;
446 uint64_t free_size = 0;
447 uint64_t moov_size = 0;
450 printf(
"Usage: qt-faststart <infile.mov> <outfile.mov>\n"
451 "Note: alternatively you can use -movflags +faststart in ffmpeg\n");
455 if (!strcmp(argv[1], argv[2])) {
456 fprintf(stderr,
"input and output files need to be different\n");
460 infile = fopen(argv[1],
"rb");
468 while (!feof(infile)) {
472 atom_size =
BE_32(&atom_bytes[0]);
473 atom_type =
BE_32(&atom_bytes[4]);
478 fprintf(stderr,
"ftyp atom size %"PRIu64
" too big\n",
482 ftyp_atom_size = atom_size;
484 ftyp_atom = malloc(ftyp_atom_size);
486 fprintf(stderr,
"could not allocate %"PRIu64
" bytes for ftyp atom\n",
491 fread(ftyp_atom, atom_size, 1, infile) != 1 ||
492 (start_offset = ftello(infile)) < 0) {
499 if (atom_size == 1) {
503 atom_size =
BE_64(&atom_bytes[0]);
513 printf(
"%c%c%c%c %10"PRIu64
" %"PRIu64
"\n",
514 (atom_type >> 24) & 255,
515 (atom_type >> 16) & 255,
516 (atom_type >> 8) & 255,
517 (atom_type >> 0) & 255,
530 fprintf(stderr,
"encountered non-QT top-level atom (is this a QuickTime file?)\n");
533 atom_offset += atom_size;
542 moov_size = atom_size;
544 if (moov_size && atom_type ==
FREE_ATOM) {
545 free_size += atom_size;
547 atom_size = moov_size;
552 printf(
"last atom in file was not a moov atom\n");
558 if (atom_size < 16) {
559 fprintf(stderr,
"bad moov atom size\n");
565 if (fseeko(infile, -(atom_size + free_size), SEEK_END)) {
569 last_offset = ftello(infile);
570 if (last_offset < 0) {
574 moov_atom_size = atom_size;
575 moov_atom = malloc(moov_atom_size);
577 fprintf(stderr,
"could not allocate %"PRIu64
" bytes for moov atom\n", atom_size);
580 if (fread(moov_atom, atom_size, 1, infile) != 1) {
588 fprintf(stderr,
"this utility does not support compressed moov atoms yet\n");
601 infile = fopen(argv[1],
"rb");
607 if (start_offset > 0) {
608 if (fseeko(infile, start_offset, SEEK_SET)) {
613 last_offset -= start_offset;
616 outfile = fopen(argv[2],
"wb");
623 if (ftyp_atom_size > 0) {
624 printf(
" writing ftyp atom...\n");
625 if (fwrite(ftyp_atom, ftyp_atom_size, 1,
outfile) != 1) {
632 printf(
" writing moov atom...\n");
633 if (fwrite(moov_atom, moov_atom_size, 1,
outfile) != 1) {
640 copy_buffer = malloc(bytes_to_copy);
642 fprintf(stderr,
"could not allocate %d bytes for copy_buffer\n", bytes_to_copy);
645 printf(
" copying rest of file...\n");
646 while (last_offset) {
647 bytes_to_copy =
MIN(bytes_to_copy, last_offset);
649 if (fread(copy_buffer, bytes_to_copy, 1, infile) != 1) {
653 if (fwrite(copy_buffer, bytes_to_copy, 1,
outfile) != 1) {
657 last_offset -= bytes_to_copy;