LemmyNet/pict-rs
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Fix odd-pixeled gif conversion

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This commit is contained in:
asonix 2020-07-11 15:49:33 -05:00
parent 510f955cc0
commit d28d56fb9a
1 changed files with 17 additions and 5 deletions
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22
src/validate/transcode.rs
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@ -61,20 +61,32 @@ fn pixel_value(pixel: Pixel) -> i32 {
unsafe { std::mem::transmute::<_, i32>(av_px_fmt) }
}
fn to_even(num: u32) -> u32 {
if num % 2 == 0 {
num
} else {
num - 1
}
}
fn filter(
decoder: &codec::decoder::Video,
encoder: &codec::encoder::Video,
) -> Result<filter::Graph, Error> {
let mut filter = filter::Graph::new();
let aspect = Rational::new(decoder.width() as i32, decoder.height() as i32).reduce();
let aspect = Rational::new(
to_even(decoder.width()) as i32,
to_even(decoder.height()) as i32,
)
.reduce();
let av_px_fmt = pixel_value(decoder.format());
let args = format!(
"video_size={width}x{height}:pix_fmt={pix_fmt}:time_base={time_base_num}/{time_base_den}:pixel_aspect={pix_aspect_num}/{pix_aspect_den}",
width=decoder.width(),
height=decoder.height(),
width=to_even(decoder.width()),
height=to_even(decoder.height()),
pix_fmt=av_px_fmt,
time_base_num=decoder.time_base().numerator(),
time_base_den=decoder.time_base().denominator(),
@ -223,8 +235,8 @@ fn transcoder(
encoder.set_bit_rate(decoder.bit_rate());
encoder.set_max_bit_rate(decoder.max_bit_rate());
encoder.set_width(decoder.width());
encoder.set_height(decoder.height());
encoder.set_width(to_even(decoder.width()));
encoder.set_height(to_even(decoder.height()));
encoder.set_bit_rate(decoder.bit_rate());
encoder.set_max_bit_rate(decoder.max_bit_rate());
encoder.set_time_base(decoder.frame_rate().ok_or(Error::FrameRate)?.invert());