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Linshizhi
ffmpeg.wasm-core
Commits
fa190b3c
Commit
fa190b3c
authored
Oct 21, 2012
by
Carl Eugen Hoyos
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Improve MPEG-PS-in-MOV detection.
Fixes issue 1520.
parent
747a00b6
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1 changed file
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8 additions
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9 deletions
+8
-9
mov.c
libavformat/mov.c
+8
-9
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libavformat/mov.c
View file @
fa190b3c
...
...
@@ -2908,15 +2908,14 @@ static int mov_probe(AVProbeData *p)
* MOV-packed MPEG-PS */
offset
=
moov_offset
;
while
(
offset
<
(
p
->
buf_size
-
20
)){
/* Sufficient space */
/* We found an actual stsd atom */
if
(
AV_RL32
(
p
->
buf
+
offset
)
==
MKTAG
(
's'
,
't'
,
's'
,
'd'
)
&&
/* Make sure there's only one stream */
AV_RB32
(
p
->
buf
+
offset
+
8
)
==
1
&&
AV_RL32
(
p
->
buf
+
offset
+
16
)
==
MKTAG
(
'm'
,
'1'
,
's'
,
' '
)
){
av_log
(
NULL
,
AV_LOG_WARNING
,
"Found m1s tag indicating this is a MOV-packed MPEG-PS.
\n
"
);
/* We found an stsd atom describing an MPEG-PS-in-MOV, return a
while
(
offset
<
(
p
->
buf_size
-
16
)){
/* Sufficient space */
/* We found an actual hdlr atom */
if
(
AV_RL32
(
p
->
buf
+
offset
)
==
MKTAG
(
'h'
,
'd'
,
'l'
,
'r'
)
&&
AV_RL32
(
p
->
buf
+
offset
+
8
)
==
MKTAG
(
'm'
,
'h'
,
'l'
,
'r'
)
&&
AV_RL32
(
p
->
buf
+
offset
+
12
)
==
MKTAG
(
'M'
,
'P'
,
'E'
,
'G'
)){
av_log
(
NULL
,
AV_LOG_WARNING
,
"Found media data tag MPEG indicating this is a MOV-packed MPEG-PS.
\n
"
);
/* We found a media handler reference atom describing an
* MPEG-PS-in-MOV, return a
* low score to force expanding the probe window until
* mpegps_probe finds what it needs */
return
5
;
...
...
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