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author | Sybren A. Stüvel <sybren@blender.org> | 2020-07-13 16:02:25 +0300 |
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committer | Sybren A. Stüvel <sybren@blender.org> | 2020-07-13 16:09:18 +0300 |
commit | b9f565881e15f13f5f30b6aca9fc656b3f92b900 (patch) | |
tree | a070bb7b6df13030a81c80a0cbf0d19784156723 /source/blender/imbuf/intern/anim_movie.c | |
parent | 9db0c36af1140082b8e4bcf42564482eb477a682 (diff) |
VSE: Python API, allow creation of VSE Movie strips with missing file
It was already possible to create Sound and Image strips that reference
non-existing files. Now it's also possible to create Movie strips
referencing missing files via the Python API call
`Sequences.new_movie()`. In this case, the duration of the strip will be
set to 1 frame.
Note that this commit does not change anything in the user interface.
The Python API of the `MovieStrip` class is extended with a function
`reload_if_needed()`. This function only performs disk I/O if the movie
strip cannot produce frames, that is either when its filepath points to
a non-existing file, or when the video sequence editor has not been
shown yet (for example because it is in an inactive workspace).
This allows for the following:
```
import bpy
scene = bpy.context.scene
vse = scene.sequence_editor_create()
filepath = bpy.path.abspath('//demo.mkv')
strip = vse.sequences.new_movie("movie", filepath,
channel=2,
frame_start=47,
file_must_exist=False)
strip.frame_final_end = 327
```
This will create a new movie strip, even when `demo.mkv` does not exist.
Once `demo.mkv` has appeared at the expected location, either
`strip.reload_if_needed()` or `strip.filepath = strip.filepath` will
load it.
Differential Revision: https://developer.blender.org/D8257
Reviewed By: Sergey, ISS
Diffstat (limited to 'source/blender/imbuf/intern/anim_movie.c')
-rw-r--r-- | source/blender/imbuf/intern/anim_movie.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/source/blender/imbuf/intern/anim_movie.c b/source/blender/imbuf/intern/anim_movie.c index 11b30a24cde..220801137f5 100644 --- a/source/blender/imbuf/intern/anim_movie.c +++ b/source/blender/imbuf/intern/anim_movie.c @@ -304,6 +304,21 @@ struct anim *IMB_open_anim(const char *name, return (anim); } +bool IMB_anim_can_produce_frames(const struct anim *anim) +{ +#ifdef WITH_AVI + if (anim->avi != NULL) { + return true; + } +#endif +#ifdef WITH_FFMPEG + if (anim->pCodecCtx != NULL) { + return true; + } +#endif + return false; +} + void IMB_suffix_anim(struct anim *anim, const char *suffix) { BLI_strncpy(anim->suffix, suffix, sizeof(anim->suffix)); |