Am So., 11. Apr. 2021 um 04:13 Uhr schrieb James Almer <jamr...@gmail.com>:
>
> The libwebp_animencoder returns a single packet with the entire animated
> stream, as that's what the external library produces. As such, only ensure the
> stream was produced by said encoder (or propagated by a demuxer, once support
> is added) when attempting to write the requested loop value.
>
> Fixes ticket #9179.
>
> Signed-off-by: James Almer <jamr...@gmail.com>
> ---
> libavformat/webpenc.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/libavformat/webpenc.c b/libavformat/webpenc.c
> index ed8325c02d..ca4ffc4e2d 100644
> --- a/libavformat/webpenc.c
> +++ b/libavformat/webpenc.c
> @@ -172,7 +172,7 @@ static int webp_write_trailer(AVFormatContext *s)
> WebpContext *w = s->priv_data;
>
> if (w->using_webp_anim_encoder) {
> - if ((w->frame_count > 1) && w->loop) { // Write loop count.
> + if (w->loop) { // Write loop count.
> avio_seek(s->pb, 42, SEEK_SET);
> avio_wl16(s->pb, w->loop);
Sorry for not understanding this:
Why is the seek necessary at all?
Carl Eugen
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