On 01/10/2012 06:34 AM, Martin Storsjö wrote:

> If the creation time is stored in the file as a zero, the
> mov demuxer skips exporting the creation time. Currently,
> files muxed without a creation time get demuxed with a
> Jan 1st 1970 creation timestamp.
> ---
>  libavformat/movenc.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
> index ef3f5cc..eb508b7 100644
> --- a/libavformat/movenc.c
> +++ b/libavformat/movenc.c
> @@ -2648,7 +2648,8 @@ static int mov_write_header(AVFormatContext *s)
>  #endif
>      if (t = av_dict_get(s->metadata, "creation_time", NULL, 0))
>          mov->time = ff_iso8601_to_unix_time(t->value);
> -    mov->time += 0x7C25B080; //1970 based -> 1904 based
> +    if (mov->time)
> +        mov->time += 0x7C25B080; // 1970 based -> 1904 based
>  
>      if (mov->chapter_track)
>          mov_create_chapter_track(s, mov->chapter_track);


lgtm. I always wondered why it did that, but I was never bothered enough
to investigate.

-Justin
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