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Generalize threading settings in proxy building and use them for encoding
and decoding in general. Check codec capabilities, prefer FF_THREAD_FRAME
threading over FF_THREAD_SLICE and automatic thread count over setting it
explicitly.
ffmpeg-codecs man page suggests that threads option is global and used by
codecs, that supports this option. Form some tests I have done, it seems that
`av_dict_set_int(&codec_opts, "threads", BLI_system_thread_count(), 0)`
has same effect as
```
pCodecCtx->thread_count = BLI_system_thread_count();
pCodecCtx->thread_type = FF_THREAD_FRAME;
```
Looking at `ff_frame_thread_encoder_init()` code, these cases are not
equivalent. It is probably safer to leave threading setup on libavcodec than
setting up each codec threading individually.
From what I have read all over the internet, frame multithreading should be
faster than slice multithreading. Slice multithreading is mainly used for low
latency streaming.
When running Blender with --debug-ffmpeg it complains about
`pCodecCtx->thread_count = BLI_system_thread_count()` that using thread count
above 16 is not recommended. Using too many threads can negatively affect image
quality, but I am not sure if this is the case for decoding as well - see
https://streaminglearningcenter.com/blogs/ffmpeg-command-threads-how-it-affects-quality-and-performance.html
This is fine for proxies but may be undesirable for final renders.
Number of threads is limited by image size, because of size of motion vectors,
so if it is possible let libavcodec determine optimal thread count.
Performance difference:
Proxy building: None
Playback speed: 2x better on 1920x1080 sample h264 file
Scrubbing: Hard to quantify, but it's much more responsive
Rendering speed: None on 1920x1080 sample h264 file, there is improvement with codecs that do support FF_THREAD_FRAME for encoding like MPNG
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D10791
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Allow use all system threads for frame encoding/decoding. This is very
straightforward: the value of zero basically disables threading.
Change threading policy to slice when decoding frames. The reason for
this is because decoding happens frame-by-frame, so inter-frame threading
policy will not bring any speedup.
The change for threading policy to slice is less obvious and is based on
benchmark of the demo files from T78986. This gives best performance so
far.
Rendering the following file went down from 190sec down to 160sec.
https://storage.googleapis.com/institute-storage/vse_simplified_example.zip
This change makes both reading and writing faster. The animation render
is just easiest to get actual time metrics.
Differential Revision: https://developer.blender.org/D8627
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Field time_base of video stream must be set for some containers,
otherwise avformat_write_header() will set it to default values.
Rendered file in such case won't be played at desired frame rate.
See init_muxer() in mux.c in ffpmeg sources.
Reviewed By: sergey
Differential Revision: https://developer.blender.org/D9213
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Follow our code style guide by using C-comments for text descriptions.
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Cleanup old tracker task format to the new. e.g: [#34039] to T34039
Ref D8718
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We define Lossless as CRF 0 (which is usually the best quality and is
working fine with other codecs afaict), but since WebM only allows for
CRF values between 2-32 and actually has a dedicated "lossless" mode, I
suggest using that (it produces large files though, so double-checking
would be welcome).
https://trac.ffmpeg.org/wiki/Encode/VP9#LosslessVP9
Maniphest Tasks: T74443
Differential Revision: https://developer.blender.org/D7800
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Note that `BKE_library.h`/`library.c` were renamed to
`BKE_lib_id.h`/`lib_id.c` to avoid having a too generic name here.
Part of T72604.
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FFmpeg expects Blender to feed it pixels in the output pixel format. If
the output pixel format is different than Blender's RGBA, a conversion
is needed (via FFmpeg's `sws_scale()` function). There were a few issues
with this conversion (and surrounding code) that are fixed in this
commit:
- When conversion was necessary a temporary buffer was allocated and
deallocated for every frame. This is now allocated once and re-used.
- Copying data to the buffer was done byte-for-byte. On little-endian
machines it is now done line-by-line using `memcpy` for a little speedup.
- The decision whether pixel format conversion is necessary is now
correctly done based on the pixel format Blender is actually using.
- The pixel format of the buffer sent to FFmpeg is no longer hard-coded
incorrectly to a fixed pixel format, but uses the actual output pixel
format. This is fixes T53058 properly, making RGB QTRLE export possible.
- I added some comments to make it clear which pixel format is referred
to (either Blender's internal format or the FFmpeg output format).
Combined these improvements not only correct a bug (T53058) but also
results in approximately 5% speed improvement (tested with a 117-frame
shot from Spring, loaded as PNGs in the VSE, encoding to h.264 with
preset 'realtime').
Reviewed By: brecht, sergey
Differential Revision: https://developer.blender.org/D5174
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This fixes an incompatibility with Visual Studio 2019 introduced in
631d5026c7bb34320c5d9b60afa5bc44b40fc5e4. It is likely caused by using
`# ifdef` inside the use of the `ELEM()` macro.
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This commit adds support for the WebM container. Previously we only
supported the WebM/VP9 video codec, but still required that it was
stored in a Matroska, MP4, or other compatible container format.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D5156
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The VP9 video codec supports writing alpha values; now this is available
in Blender too.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D5156
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Simplified `BKE_ffmpeg_alpha_channel_is_supported()` to use `ELEM()`
instead of a row consecutive `if`-statements.
No functional changes.
Reviewed By: brecht
Differential Revision: https://developer.blender.org/D5156
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The root cause seems to be an assumption in
[generate_video_frame()](https://developer.blender.org/diffusion/B/browse/master/source/blender/blenkernel/intern/writeffmpeg.c)
that we're always using 4 bytes per pixel. This is not true when using
QTRLE in RGB mode, because that uses the RGB24 pixel format (so 3 bytes
per pixel). Just updating the `linesize` property doesn't fix it though,
but just creates a crash somewhere else.
This at least fixes the crash by always forcing RGBA to be written, even
when the user selects RGB.
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`(1L << 31)` can cause an integer overflow on 32-bit systems, `(1UL << 31)`
won't. Fixed as per LazyDodo's suggestion in
https://developer.blender.org/rB956cb4f403dd3a6ddb379202dc1f2770b9820073#238718
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ffmpeg defines some of the math constants if they are not
found before including any of its headers, this lead to
a build warnings about M_E, M_LN2 and M_SQRT1_2 being
redefined once BLI_math_base.h gets included.
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- MPEG4/DivX has a maximum value of 65535 for the timebase denominator.
- MPEG1 and 2 have a list of supported frame rate ratios. These use
ratios like 24000/1001 and need those exact numbers.
This fixes an issue introduced in c5b1e7cd4e86f9aff010fa84192d783b895ce6c7
where the correct ratio was passed to FFmpeg, but not with the identical
numbers FFmpeg has in a lookup table.
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FFmpeg uses a fraction of integers to indicate the frame rate, whereas
Blender uses `int / float`. When a custom frame rate is used with
non-integer base, the FPS and Base settings were multiplied with 100000
before passing to FFmpeg as `int`. This could overflow when a high
enough FPS setting was used, which is the case when importing a video of
almost-but-not-quite-integer frame rate into the VSE. The overflow
caused FFmpeg to return an error "The encoder timebase is not set",
which is rather cryptic for users.
The new solution is to take the max int and divide that by the frame
rate, and use that ratio to pass to FFmpeg. This won't overflow, and
thus allows exporting arbitrary frame rates.
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This also makes `IDP_CopyProperty` the "opposite"
of `IDP_FreeProperty`, which is what I'd expect.
Two refactoring steps:
* rename IDP_FreeProperty to IDP_FreePropertyContent
* new IDP_FreeProperty function that actually frees the property
Reviewers: brecht
Differential Revision: https://developer.blender.org/D4872
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Prepare for enabling ReflowComments.
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Apply clang format as proposed in T53211.
For details on usage and instructions for migrating branches
without conflicts, see:
https://wiki.blender.org/wiki/Tools/ClangFormat
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While \file doesn't need an argument, it can't have another doxy
command after it.
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Move \ingroup onto same line to be more compact and
make it clear the file is in the group.
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BF-admins agree to remove header information that isn't useful,
to reduce noise.
- BEGIN/END license blocks
Developers should add non license comments as separate comment blocks.
No need for separator text.
- Contributors
This is often invalid, outdated or misleading
especially when splitting files.
It's more useful to git-blame to find out who has developed the code.
See P901 for script to perform these edits.
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This enables ffmpeg to encode each frame in its own thread. However in most
cases Blender does not pass frames to ffmpeg fast enough to actually use the
more than two threads. In some tests the speed was measured to be about 20%.
If other parts of the video sequencer get optimized, this should improve.
Differential Revision: https://developer.blender.org/D4031
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That kind of implicit includes should really only be done when totally,
absolutely necessary, and ideally only with rather simple 'second-level'
headers.
Otherwise not being explicit with includes always end up biting in
unexpected ways...
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Continuation of https://developer.blender.org/D3802
Reviewers: brecht
Differential Revision: https://developer.blender.org/D3808
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This uses same mapping as Audaspace to specify channel layout, which was
missing before.
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Conflicts:
source/blender/blenkernel/intern/blendfile.c
source/blender/blenloader/intern/readfile.h
source/blender/blenloader/intern/versioning_250.c
source/blender/blenloader/intern/versioning_260.c
source/blender/blenloader/intern/versioning_270.c
source/blender/blenloader/intern/versioning_legacy.c
source/blender/editors/render/render_shading.c
source/blender/makesrna/intern/rna_movieclip.c
source/blender/render/intern/source/pipeline.c
source/blender/render/intern/source/voxeldata.c
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Strip unindented comment blocks - mainly headers to avoid conflicts.
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Conflicts:
source/blender/modifiers/intern/MOD_dynamicpaint.c
source/blender/modifiers/intern/MOD_uvproject.c
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Some years-old deprecated stuff has now been removed.
Correct solution is probably to use valid defines etc. in own code, but
this is more FFMEPG maintainer task (since it also may change how old
FFMPEG we do support...).
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Brecht authored this commit, but he gave me the honours to actually
do it. Here it goes; Blender Internal. Bye bye, you did great!
* Point density, voxel data, ocean, environment map textures were removed,
as these only worked within BI rendering. Note that the ocean modifier
and the Cycles point density shader node continue to work.
* Dynamic paint using material shading was removed, as this only worked
with BI. If we ever wanted to support this again probably it should go
through the baking API.
* GPU shader export through the Python API was removed. This only worked
for the old BI GLSL shaders, which no longer exists. Doing something
similar for Eevee would be significantly more complicated because it
uses a lot of multiplass rendering and logic outside the shader, it's
probably impractical.
* Collada material import / export code is mostly gone, as it only worked
for BI materials. We need to add Cycles / Eevee material support at some
point.
* The mesh noise operator was removed since it only worked with BI
material texture slots. A displacement modifier can be used instead.
* The delete texture paint slot operator was removed since it only worked
for BI material texture slots. Could be added back with node support.
* Not all legacy viewport features are supported in the new viewport, but
their code was removed. If we need to bring anything back we can look at
older git revisions.
* There is some legacy viewport code that I could not remove yet, and some
that I probably missed.
* Shader node execution code was left mostly intact, even though it is not
used anywhere now. We may eventually use this to replace the texture
nodes with Cycles / Eevee shader nodes.
* The Cycles Bake panel now includes settings for baking multires normal
and displacement maps. The underlying code needs to be merged properly,
and we plan to add back support for multires AO baking and add support
to Cycles baking for features like vertex color, displacement, and other
missing baking features.
* This commit removes DNA and the Python API for BI material, lamp, world
and scene settings. This breaks a lot of addons.
* There is more DNA that can be removed or renamed, where Cycles or Eevee
are reusing some old BI properties but the names are not really correct
anymore.
* Texture slots for materials, lamps and world were removed. They remain
for brushes, particles and freestyle linestyles.
* 'BLENDER_RENDER' remains in the COMPAT_ENGINES of UI panels. Cycles and
other renderers use this to find all panels to show, minus a few panels
that they have their own replacement for.
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WEBM is the codec name, and VP9 is the encoder (the older encoder "VP8"
is less efficient than VP9).
WEBM/VP9 and h.264 both have options to control the file size versus
compression time (e.g. fast but big, or slow and small, for the same
output quality). Since WEBM/VP9 only has three choices, I've chosen to
map those to 3 of the 9 possible choices of h.264:
- BEST → SLOWER
- GOOD → MEDIUM
- REALTIME → SUPERFAST
The VERYSLOW and ULTRAFAST options give very little extra benefit.
Reviewed by: @Severin
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This is currently only supported by FFmpeg (so not frameserver, AVI RAW,
or AVI JPEG), and only seems to work when using Matroska or Ogg Theora
containers.
Only metadata that doesn't change from frame to frame is written to
video files. This distinction is visible in the UI by looking at the
stamp checkbox tooltips (they either mention "image" or "image/video").
Part of: https://developer.blender.org/D2273
Reviewed by: @campbellbarton
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Convention was only followed loosely,
apply to DNA where changes aren't likely to conflict.
(Skipped ModifierType for eg).
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