On Wed, Sep 5, 2018 at 6:29 PM James Darnley <[email protected]> wrote: > > On 2018-09-05 22:52, Sigríður Regína Sigurþórsdóttir wrote: > > + {"reserve_free_space", "Reserve a given amount of space at the > > beginning og the file for unspecified purpose." > > I added the "metadata_header_padding" global option many years ago. Can > you not reuse it for this purpose? Is it not likely to be "metadata" > that another software might fill this with?
Thank you for the suggestion. Here is an updated version using the
"metadata_header_padding".
---
libavformat/matroskaenc.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/libavformat/matroskaenc.c b/libavformat/matroskaenc.c
index 09a62e1..3d8ec3c 100644
--- a/libavformat/matroskaenc.c
+++ b/libavformat/matroskaenc.c
@@ -2005,6 +2005,11 @@ static int mkv_write_header(AVFormatContext *s)
ret = AVERROR(ENOMEM);
goto fail;
}
+ if (s->metadata_header_padding) {
+ if (s->metadata_header_padding == 1)
+ s->metadata_header_padding++;
+ put_ebml_void(pb, s->metadata_header_padding);
+ }
if ((pb->seekable & AVIO_SEEKABLE_NORMAL) && mkv->reserve_cues_space) {
mkv->cues_pos = avio_tell(pb);
if (mkv->reserve_cues_space == 1)
--
2.6.2
0001-avformat-matroskaenc-add-reserve-free-space-option.patch
Description: Binary data
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