A Matroska EBML ID can only be maximally four bytes long, so make the
variables denoting EBML IDs uint32_t instead of unsigned int to
better reflect this.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
All places where end_ebml_master_crc32_preliminary are used already
check for whether the output is seekable, so the check in the function
is redundant.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Since 4e3bdf729a80f868b014ceb02901d87198b545a5 there is no reason any
more to treat the seekable and non-seekable cases separate with regards
to the log message for a new cluster. This effectively reverts
d41aeea8a64bab5d7aacd602f7214f95baad109f.
Also improved the log message: "pts 80dts 0" -> "pts 80, dts 0".
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Up until now, the check for whether to write CRC32 elements was always
mkv->write_crc && mkv->mode != MODE_WEBM. This is equivalent to simply
set write_crc to zero in WebM-mode. And this is what this commit does.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Up until e7ddafd515dc9826915b739d0b977a63c21e96af the Matroska muxer
wrote a secondary seek head referencing all the clusters. When this
was changed, a (now completely wrong) comment remained and the unique
remaining seek head was still called main_seekhead. This has been
changed.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Up until now the EBML Header length field has been written with eight
bytes, although the EBML Header is always so small that only one byte
is needed for it. This patch saves seven bytes for every Matroska/Webm
file.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
The upper bounds currently used for determining the size of a CuePoint's
length field can be improved somewhat; as a result, a CuePoint
containing three CueTrackPositions will now only need a size field
with one byte length.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
The earlier code included the size of the BlockGroup's length field and
the EBML ID in the calculation of the size for the payload and ignored
the size of the duration's length field. This meant that Blockgroups
corresponding to packets with size 2^(7n) - 17 - n - i, i = 0,..., n - 1,
n = 1,..., 8 (i.e. 110, 16364, 16365, 2097130..2097132, ...) were written
with length fields that are unnecessarily long.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
At this point, ts already includes the ts_offset so that the relative
time written with the cluster is already given by ts - mkv->cluster_pts.
It is this number that needs to fit into an int16_t.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Fix memory leak after write trailer for #7827, only store a audio
packet whose buffer has size greater than zero in cur_audio_pkt.
Audio packets with size zero, but with side-data currently lead to
memleaks, in the Matroska muxer, because they are not properly freed:
They are currently put into an AVPacket in the MatroskaMuxContext to
ensure that the necessary audio is always available for a new cluster,
but are only written and freed when their size is > 0.
As the only use we have for such packets consists in updating the
CodecPrivate it makes no sense to store these packets at all and this
is how this commit solves the memleak.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@googlemail.com>
Signed-off-by: Jun Zhao <barryjzhao@tencent.com>
This reverts commit 4755b6e6d194b0a0fb72957cd3dc0eaf7b2375f7.
This change was not necessary. CodecPrivate was being written to WebM
for codecs like AV1 already.
Nothing prevents it to work except this check. AV1 is already supported
by Matroska muxer and aomenc produces WebM/AV1 files as well.
Signed-off-by: Kagami Hiiragi <kagami@genshiken.org>
Signed-off-by: James Almer <jamrial@gmail.com>
This is a temporary workaround for transcoding scenarious using libaom-av1
encoder, which currently can't propagate extradata during initialization.
Signed-off-by: James Almer <jamrial@gmail.com>
Make sure to not write forbidden OBUs to CodecPrivate, and do the same with
unnecessary OBUs for packets.
Signed-off-by: James Almer <jamrial@gmail.com>
If the API user doesn't set avg_frame_rate, matroskaenc will write the
current timebase as "default duration" for the video track. This makes
no sense, because the "default duration" implies the framerate of the
video. Since the timebase is forced to 1/1000, this will make the
resulting file claim 1000fps.
Drop it and don't write the element. It's optional, so it's better not
to write it if the framerate is unknown.
Strangely does not require FATE changes.
Prevents out of array accesses. Adressess ticket #6873
Reviewed-by: Michael Niedermayer <michael@niedermayer.cc>
Signed-off-by: James Almer <jamrial@gmail.com>
* commit '827a05eaa9482e9ac2a17f7f2e42ead07c1d7574':
matroskaenc: add support for Spherical Video elements
See 58eb0f57f6702d57b6f97ec5010657bb2c076eff. Merged for cosmetics
purposes.
Also includes changes from d32d59bc977b43031007bb2ab21e232f96d2ebcb
Merged-by: James Almer <jamrial@gmail.com>
WebM supports a subset of elements from the Tags master.
See https://www.webmproject.org/docs/container/#tagging
Reviewed-by: Ivan Janatra <janatra@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>
WebM supports a subset of elements from the Chapters master.
See https://www.webmproject.org/docs/container/#chapters
Addresses ticket #6425
Reviewed-by: James Zern <jzern@google.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This adapts and merges commit f4bf236338f6001736a4784b9c23de863057a583
from libav, originally skipped in 13a211e6320d061d9e8c29354c81239324b2db03
as it was not necessary back then.
Is's applied now in preparation for the following patches, where the
aac_adtstoasc bitstream filter will start to correctly propagate the new
extradata through packet side data.
Signed-off-by: James Almer <jamrial@gmail.com>
ts_offset was added to cluster timecode, but then effectively subtracted
back off the block timecode
When setting initial_padding for an audio stream, the timestamps are
written incorrectly to the mkv file. cluster timecode gets written
as pts0 + ts_offset which is correct, but then block timecode gets
written as pts - cluster timecode which expanded is
pts - (pts0 + ts_offset). Adding cluster and block tc back together:
cluster + block = (pts0 + ts_offset) + (pts - (pts0 + ts_offset)) = pts
But the result should be pts + ts_offset since demux will subtract the
CodecDelay element from pts and set initial_padding to CodecDelay.
This patch gives the correct result.
When support for this was added the details weren't yet finalized.
This is no longer the case.
Fixes writing of mkv/webm files with HDR.
Reported-by: Kagami Hiiragi <kagami@genshiken.org>
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Reviewed-by: James Almer <jamrial@gmail.com>
The following three commits created a regression by writing initially
invalid mkv headers:
650e17d88b63b5aca6e0a43483e89e64b0f7d2dd avformat/matroskaenc: write a
CRC32 element on Tags
3bcadf822711720ff0f8d14db71ae47cdf97e652 avformat/matroskaenc: write a
CRC32 element on Info
ee888cfbe777cd2916a3548c750e433ab8f8e6a5 avformat/matroskaenc: postpone
writing the Tracks master
Symptoms:
- You can no longer playback a file that is still processed by ffmpeg,
e.g. VLC fails playback
- You can no longer stream a file to a client while if is still being
processed
- Various diagnosing tools show header errors or incomplete headers
(e.g. ffprobe, mediainfo, mkvalidator)
Note: The symptoms do not apply to completed files or ffmpeg runs that
were interrupted with 'q'
Cause:
The mentioned commits made changes in a way that some header elements
are only partially written in
mkv_write_header, leaving the header in an invalid state. Only in
mkv_write_trailer, these elements
are finished correctly, but that does only occur at the end of the
process.
Regression:
Before these commits were applied, mkv headers have always been valid,
even before completion of ffmpeg.
This has worked reliably over many versions of ffmpeg, to it was an
obvious regression.
Bugtracker:
This issue has been recorded as #5977 which is resolved by this patch
Patch:
The patch adds a new function 'end_ebml_master_crc32_preliminary' that
preliminarily finishes the ebml
element without destroying the buffer. The buffer can be used to update
the ebml element later during
mkv_write_trailer. But most important: mkv_write_header finishes with a
valid mkv header again.
Signed-off-by: James Almer <jamrial@gmail.com>
FLAC streams originating from the FLAC encoder send updated and more
complete STREAMINFO metadata as part of the last packet, so write that
to CodecPrivate instead of the incomplete one available in extradata
during init.
Signed-off-by: James Almer <jamrial@gmail.com>
