The hw decoder may allocate a large frame from AVHWFramesContext, and adjust width and height based on bitstream.
We need to use resolution from src frame instead of AVHWFramesContext.
Guo, Yejun [Mon, 18 Jan 2021 07:27:23 +0000 (15:27 +0800)]
dnn_backend_openvino.c: add version mismatch reminder
The OpenVINO model file format changes when OpenVINO goes to a new
release, it does not work if the versions between model file and
runtime are mismatched.
avformat/nistspheredec: Check bits_per_coded_sample and channels
Fixes: signed integer overflow: 80 * 92233009 cannot be represented in type 'int' Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_NISTSPHERE_fuzzer-6669100654919680 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
The usage of a static variable presents a potential for data races and
means that this function can't be used in init functions of codecs with
FF_CODEC_CAP_INIT_THREADSAFE (unless of course one presumes that
everything is alright in which case the error is not triggered; but then
the whole function is pointless...). This makes the Snow decoder
init-threadsafe as it already claims.
Notice that this function has been removed in 2014 by Libav in commit 9103185bd116930f90b847090e66a64fa9971ce2, because only some codepaths
are checked this way and because it only affects legacy compilers. The
latter is of course even more true today.
Reviewed-by: Anton Khirnov <anton@khirnov.net> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
James Almer [Fri, 8 Jan 2021 20:47:41 +0000 (17:47 -0300)]
ffmpeg_opts: remove lowres check
The st->codec values are updated based on the lowres factor by
avformat_find_stream_info() when it runs an instance of the decoder internally,
and the same thing happens in ffmpeg.c when we open ist->dec_ctx with
avcodec_open2(), so these assignments are redundant.
avformat/asfdec_o: Check size vs. offset in detect_unknown_subobject()
Fixes: signed integer overflow: 2314885530818453566 + 7503032301549264928 cannot be represented in type 'long' Fixes: 26639/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_O_fuzzer-6024222100684800
Alternatively this could be ignored but then the end condition of the loop
would be hard to reach as avio_tell() is int64_t
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avformat/utils: check for integer overflow in av_get_frame_filename2()
Fixes: signed integer overflow: 317316873 * 10 cannot be represented in type 'int' Fixes: 24708/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5731180885049344 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avformat/avidec: Use av_sat_sub64() in check_stream_max_drift()
Fixes: signed integer overflow: 8833900919969684211 - -9223372036854775808 cannot be represented in type 'long' Fixes: 26726/clusterfuzz-testcase-minimized-ffmpeg_dem_AVI_fuzzer-5669377724383232 Fixes: 27587/clusterfuzz-testcase-minimized-ffmpeg_dem_AVI_fuzzer-6294562263531520 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avutil/timecode: Avoid undefined behavior with large framenum
Fixes: signed integer overflow: 2147462079 + 2149596 cannot be represented in type 'int' Fixes: 27565/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-5091972813160448 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avformat/mov: Check a.size before computing next_root_atom
Fixes: signed integer overflow: 64 + 9223372036854775799 cannot be represented in type 'long' Fixes: 27563/clusterfuzz-testcase-minimized-ffmpeg_dem_MOV_fuzzer-6244650163372032 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
avformat/sbgdec: Reduce the amount of floating point in str_to_time()
Fixes: 1e+75 is outside the range of representable values of type 'long' Fixes: 26910/clusterfuzz-testcase-minimized-ffmpeg_dem_SBG_fuzzer-6626834808700928 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Reviewed-by: Nicolas George <george@nsup.org> Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Ting Fu [Mon, 18 Jan 2021 03:42:14 +0000 (11:42 +0800)]
dnn/openvino: support model input resize
OpenVINO APIs require specify input size to run the model, while some
OpenVINO model does accept different input size. To enable this feature
adding input_resizable option here for easier use.
Setting bool variable input_resizable to specify if the input can be resizable or not.
input_resizable = 1 means support input resize, aka accept different input size.
input_resizable = 0 (default) means do not support input resize.
Please make sure the inference model does accept different input size
before use this option, otherwise the inference engine may report error(s).
eg: ./ffmpeg -i video_name.mp4 -vf dnn_processing=dnn_backend=openvino:\
model=model_name.xml:input=input_name:output=output_name:\
options=device=CPU\&input_resizable=1 -y output_video_name.mp4
Ting Fu [Mon, 18 Jan 2021 03:42:13 +0000 (11:42 +0800)]
dnn/openvino: refine code for better model initialization
Move openvino model/inference request creation and initialization steps
from ff_dnn_load_model_ov to new function init_model_ov, for later input
resize support.
tpol [Sat, 10 Oct 2020 23:22:18 +0000 (19:22 -0400)]
avformat/rtsp: correctly set media control uri with mpegts
Fixes #1941
Currently the media control uri is not correctly assigned when mpegts is
signalled in the media description.
The code checks whether at least one AVStream has been setup before
assigning to the media's uri. With mpegts the AVStreams are setup when
parsing packets and so the media's uri is skipped. This is fixed by
using rt->nb_rtsp_streams in the check which counts all medias in the
sdp.
Derek Buitenhuis [Sun, 17 May 2020 12:01:12 +0000 (13:01 +0100)]
avcodec/librav1e: Pass through timestamps as opaque user data
avcodec has no facilities to generate timestamps properly from
output frame numbers (and it would be wrong for VFR anyway),
so pass through the timestamps using rav1e's opaque user data
feature, which was added in v0.4.0.
Martin Storsjö [Sat, 19 Dec 2020 22:45:42 +0000 (00:45 +0200)]
movenc: Present durations in mvhd/tkhd/mdhd as they are after edits
If the edit lists remove parts of the output timeline, or add a
delay to it, this should be included in the mvhd/tkhd/mdhd durations,
which should correspond to the edit lists.
For tracks starting with pts < 0, the edit list trims out the segment
before pts=0. For tracks starting with pts > 0, a delay element is
added in the edit list, delaying the start of the track data.
In both cases, the practical effect is that the post-edit output
is as if the track had started with pts = 0. Thus calculate the range
from pts=0 to end_pts, for the purposes of mvhd/tkhd/mdhd, unless
edit lists explicitly are disabled.
mov_write_edts_tag needs to operate on the actual pts duration of
the track samples, not the duration that already takes the edit
list effect into account.
projects / ffmpeg / log