As per section 3.11.1 of the IAMF spec, the sample rate used in Codec Config
for Opus shall be 48kHz, regardless of the original sample rate used during
encoding.
Signed-off-by: James Almer <jamrial@gmail.com>
When subblock durations are constant, the last block may be smaller and the
value needs to be calculated.
Signed-off-by: James Almer <jamrial@gmail.com>
Section 3.6.1 of the IAMF spec states "When constant_subblock_duration is equal to 0, the summation of all
subblock_duration in this parameter block SHALL be equal to duration.".
Signed-off-by: James Almer <jamrial@gmail.com>
After introduction of ff_dvdclut_palette_extradata_cat() to convert
DVD subtitle palettes from YUV to RGB, a leak is introduced because
of the call to ff_alloc_extradata(). This is not necessary, instead
we should free the extradata because ff_bprint_to_codecpar_extradata()
will finalize the bprint'ed string to the codecpar and set the length.
Fixes leak introduced in 3b0e6c0ecc.
Signed-off-by: Marth64 <marth64@proxyid.net>
SMUSH ANIM files with subversion 2 provide additional fields for
framerate and samplerate, use them if available, otherwise
default to 12 fps which is the default for almost all ANIMv2
since 1995.
Fixes the too-fast playback of test files from LucasArts games
released 1995-1997. It was not noticed since Audio for
those isn't decoded by ffmpeg.
Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
instead of just resyncing and skipping a bunch of TS packets, leading to
a loss of frames.
Before this, a stray byte with the value of 0x47 in TP_extra_header
would throw off the detection of where TS packets start.
A typical file that could cause issues would look like this:
00000300: 238f 4780 4750 1110 0000 01e0 0000 84c0
^^ ^^
The first four bytes here are TP_extra_header and the actual TS packet
starts at offset 0x304
FFmpeg would try to read a packet at 0x300 but since nothing skips the
4 byte TP_extra_header, find that the first byte is not 0x47 and
immediately go into mpegts_resync, and incorrectly detect the stray 0x47
in the TP_extra_header at 0x302 as the new sync byte.
Fix this by correctly skipping the first 4 bytes if the source packet
is 192 bytes.
Signed-off-by: llyyr <llyyr.public@gmail.com>
Signed-off-by: Hendrik Leppkes <h.leppkes@gmail.com>
Note ISO/IEC 13818-1 defines an Extension_descriptor with descriptor_tag value
0x3f (63), so I kept the DVB comment.
I don't know what defines stream_type value 0x8a as DTS.
I don't have any Blu-ray standards so I don't know where those stream_type
values are defined.
Signed-off-by: Marton Balint <cus@passwd.hu>
Fixes: Use of uninitialized value
Fixes: 71551/clusterfuzz-testcase-minimized-ffmpeg_dem_QCP_fuzzer-4647386712965120
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Fixes: integer overflow: -2147483648 - 1 cannot be represented in type 'int'
Fixes: 373971762/clusterfuzz-testcase-minimized-ffmpeg_dem_DXA_fuzzer-4880491112103936
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
ambisonics mode > 1 does not initialize any layer but layer 0
is unconditionally dereferenced
Fixes: poc-2024-11
Fixes: null pointer dereference
Found-by: 苏童 <220235212@seu.edu.cn>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
When using fast chapter marker calculation (default), the last
marker is inadverdently ignored due to an off-by-one.
Signed-off-by: Marth64 <marth64@proxyid.net>
Also fix checks for sc->stts_count that assume it may not be in sync with
sample count.
Missed in 865c73c86f. Fixes parsing durations in
some cases.
Signed-off-by: James Almer <jamrial@gmail.com>
And not just the first, as it was being done for lacing. The spec states that the
flag applies to everything inside the simple box.
Signed-off-by: James Almer <jamrial@gmail.com>
They are needed for audio tracks with priming samples, where negative CTS
offsets can't be used.
Fixes ticket #11031.
Signed-off-by: James Almer <jamrial@gmail.com>
avgBitrate == 0 is used to signal a VBR track, so if that value is propagated by an
encoder, don't overwrite it with a calculated value based on track size.
Part of a fix for ticket #11303.
Signed-off-by: James Almer <jamrial@gmail.com>
Don't reject extradata with missing PS NALUs if array_completeness is not
requested.
Fixes a regression since a696b28886.
Signed-off-by: James Almer <jamrial@gmail.com>
ATSC A/52:2018 Digital Audio Compression (AC-3, E-AC-3), Annex G
defines stream_type 0x87 for E-AC-3 bit streams.
Signed-off-by: Marton Balint <cus@passwd.hu>
Some mp3 files look surprisingly like mpeg PS streams. In order for us
to hint to ffmpeg that the file really is mp3, we can deliver it with a
mime type. The mp3 probe therefore needs to have a mime type registered,
(which is previously did not).
Peter Ross
James Almer
Timo Rothenpieler
Marth64
Manuel Lauss
llyyr
Paul B Mahol
Gyan Doshi
Malek Assaad
Scott Theisen
Michael Niedermayer
Marton Balint
Darren Mo
Richard Mitic