Struct re_video::decode::ffmpeg_h264::ffmpeg::FFmpegFrameInfo

struct FFmpegFrameInfo {
    is_sync: bool,
    sample_idx: usize,
    frame_nr: usize,
    presentation_timestamp: Time,
    duration: Time,
    decode_timestamp: Time,
}

ffmpeg does not tell us the timestamp/duration of a given frame, so we need to remember it.

Fields

is_sync: bool

The start of a new crate::demux::GroupOfPictures?

This probably means this is a keyframe, and that and entire frame can be decoded from only this one sample (though I’m not 100% sure).

sample_idx: usize

Which sample in the video is this from?

In MP4, one sample is one frame, but we may be reordering samples when decoding.

This is the order of which the samples appear in the container, which is usually ordered by Self::decode_timestamp.

frame_nr: usize

Which frame is this?

This is on the assumption that each sample produces a single frame, which is true for MP4.

This is the index of frames ordered by Self::presentation_timestamp.

presentation_timestamp: Time

duration: Time

decode_timestamp: Time

Trait Implementations

impl Clone for FFmpegFrameInfo

fn clone(&self) -> FFmpegFrameInfo

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FFmpegFrameInfo

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.