This will leave the background transparent when the target format contains an alpha channel, without affecting the behavior on formats without one.
Unified · Split
| @@ -16458,7 +16458,7 @@ approaches. · 16457 unmodified lines | ||
| 16458 | 16458 | Set the color used to fill the output area not covered by the output image, for |
| 16459 | 16459 | example as a result of @option{normalize_sar}. For the general syntax of this |
| 16460 | 16460 | option, check the @ref{color syntax,,"Color" section in the ffmpeg-utils |
| 16461 | −manual,ffmpeg-utils}. Defaults to @code{black}. | |
| 16461 | +manual,ffmpeg-utils}. Defaults to @code{black@@0}. | |
| 16462 | 16462 | |
| 16463 | 16463 | @item corner_rounding |
| 16464 | 16464 | Render frames with rounded corners. The value, given as a float ranging from |
| @@ -1288,7 +1288,7 @@ static const AVOption libplacebo_options[] = { · 1287 unmodified lines | ||
| 1288 | 1288 | { "force_divisible_by", "enforce that the output resolution is divisible by a defined integer when force_original_aspect_ratio is used", OFFSET(force_divisible_by), AV_OPT_TYPE_INT, { .i64 = 1 }, 1, 256, STATIC }, |
| 1289 | 1289 | { "normalize_sar", "force SAR normalization to 1:1 by adjusting pos_x/y/w/h", OFFSET(normalize_sar), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, STATIC }, |
| 1290 | 1290 | { "pad_crop_ratio", "ratio between padding and cropping when normalizing SAR (0=pad, 1=crop)", OFFSET(pad_crop_ratio), AV_OPT_TYPE_FLOAT, {.dbl=0.0}, 0.0, 1.0, DYNAMIC }, |
| 1291 | − { "fillcolor", "Background fill color", OFFSET(fillcolor), AV_OPT_TYPE_STRING, {.str = "black"}, .flags = DYNAMIC }, | |
| 1291 | + { "fillcolor", "Background fill color", OFFSET(fillcolor), AV_OPT_TYPE_STRING, {.str = "black@0"}, .flags = DYNAMIC }, | |
| 1292 | 1292 | { "corner_rounding", "Corner rounding radius", OFFSET(corner_rounding), AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, 0.0, 1.0, .flags = DYNAMIC }, |
| 1293 | 1293 | { "extra_opts", "Pass extra libplacebo-specific options using a :-separated list of key=value pairs", OFFSET(extra_opts), AV_OPT_TYPE_DICT, .flags = DYNAMIC }, |
| 1294 | 1294 | |