H.264 and mpeg12 parsers need to be adjusted at the same time to stop
using the value of AVCodecContext.ticks_per_frame, because it is not set
correctly unless the codec has been opened. Previously this would result
in both the parser and lavf seeing the same incorrect value, which would
cancel out.
Updating lavf and not the parsers would result in correct value in lavf,
but the wrong one in parsers, which would break some tests.
Decoders will currently warn if an audio decoder not marked with
AV_CODEC_CAP_SUBFRAMES consumes less than the whole packet, but
* this happens for regular files
* this has no negative consequences
* there is no meeaningful action that can or should be taken in response
The warning is thus useless noise.
This should fix the regression since 6b1f68ccb0
Should fix Ticket10353 (please test and report cases that still fail)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This exposes libplacebo's frame mixing functionality to vf_libplacebo,
by allowing users to specify a desired target fps to output at. Incoming
frames will be smoothly resampled (in a manner determined by the
`frame_mixer` option, to be added in the next commit).
To generate a consistently timed output stream, we directly use the
desired framerate as the timebase, and simply output frames in
sequential order (tracked by the number of frames output so far).
To present compatibility with the current behavior, we keep track of a
FIFO of exact frame timestamps that we want to output to the user. In
practice, this is essentially equivalent to the current filter_frame()
code, but this design allows us to scale to more complicated use cases
in the future - for example, insertion of intermediate frames
(deinterlacing, frame doubling, conversion to fixed fps, ...)
This does not leverage any immediate benefits, but refactors and
prepares the codebase for upcoming changes, which will include the
ability to do deinterlacing and resampling (frame mixing).
This commit contains no functional change. The goal is merely to
separate the highly intertwined `filter_frame` and `process_frames`
functions into their separate concerns, specifically to separate frame
uploading (which is now done directly in `filter_frame`) from emitting a
frame (which is now done by a dedicated function `output_frame`).
The overall idea here is to be able to ultimately call `output_frame`
multiple times, to e.g. emit several output frames for a single input
frame.
For example
ffmpeg -f lavfi -i sine -af "aformat=cl=stereo|5.1|7.1,lowpass,aformat=cl=7.1|5.1|stereo" -f null -
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
Before this commit if allocation would fail in ff_add_channel_layout()
function, function would return negative error code and this would
cause wrong format pick up later. If allocation would not fail return
code would be 0 and then format negotiation would simply fail as code
would break from the loop but with wrong return code.
Error was introduced in 6aaac24d72 commit.
Fixes#6638
This is not public API, no it has no need for an alloc() and free()
functions. The struct can reside on stack.
Signed-off-by: James Almer <jamrial@gmail.com>
Move the AVPacketQueue functionality that is currently only used
for the decklink decode module into decklink_common, so it can
be shared by the decklink encoder (i.e. for VANC insertion when
we receive data packets separate from video).
The threadsafe queue used within the decklink module was named
"AVPacketQueue" which implies that it is part of the public API,
which it is not.
Rename the functions and the name of the queue struct to make
clear it is used exclusively by decklink, per Marton Balint's
suggestion.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
This patch simply recognizes the AAC audio track during
decode -- it does not add functionality to encode AAC in
MXF.
Signed-off-by: Ammon Riley <ammon.riley@gmail.com>
Signed-off-by: Marton Balint <cus@passwd.hu>
Unlike other cases where the closed captions are embedded in the
video stream as MPEG-2 userdata or H.264 SEI data, with MOV files
the captions are often found on a separate "e608" subtitle track.
Add support for playout of such files, leveraging the new ccfifo
mechanism to ensure that they are embedded into VANC at the correct
rate (since e608 packets often contain batches of multiple 608 pairs).
Note this patch includes a new file named libavdevice/ccfifo.c, which
allows the ccfifo functionality in libavfilter to be reused even if
doing shared builds. This is the same approach used for log2_tab.c.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
THis filter can correct certain issues seen from upstream sources
where the cc_count is not properly set or the CEA-608 tuples are
not at the start of the payload as expected.
Make use of the ccfifo to extract and immediately repack the CEA-708
side data, thereby removing any extra padding and ensuring the 608
tuples are at the front of the payload.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Because the interlacing filter halves the effective framerate, we
need to ensure that no CEA-708 data is lost as frames are merged.
Make use of the new ccfifo mechanism to ensure that caption data
is properly preserved as frames pass through the filter.
Thanks to Thomas Mundt for review and noticing a couple of
missed codepaths for injection on output. Thanks to Lance Wang
for pointing out a memory leak.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Various deinterlacing modes have the effect of doubling the
framerate, and we need to ensure that the caption data isn't
duplicated (or else you get double captions on-screen).
Use the new ccfifo mechanism for yadif (and yadif_cuda and bwdif
since they use the same yadif core) so that CEA-708 data is
properly preserved through this filter.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
The existing implementation made an attempt to remove duplicate
captions if increasing the framerate, but made no attempt to
handle reducing the framerate, nor did it rewrite the caption
payloads to have the appropriate cc_count (e.g. the cc_count needs
to change from 20 to 10 when going from 1080i59 to 720p59 and
vice-versa).
Make use of the new ccfifo mechanism to ensure that caption data
is properly preserved.
Signed-off-by: Devin Heitmueller <dheitmueller@ltnglobal.com>
Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Anton Khirnov
Michael Niedermayer
Paul B Mahol
James Almer
Niklas Haas
Oleg
Stefano Sabatini
Andriy Utkin
Devin Heitmueller
Ammon Riley
Timo Rothenpieler
Pierre-Anthony Lemieux