lör 2021-01-09 klockan 13:07 +0800 skrev lance.lmw...@gmail.com:
> From: Limin Wang <lance.lmw...@gmail.com>
>
> The metadata company_name, product_name, product_version from input
> file will be deleted to avoid overwriting information
> Please to test with below command:
> ./ffmpeg -i ../fate-suite/mxf/Sony-00001.mxf -c:v copy -c:a copy out.mxf
> and
> ./ffmpeg -i ../fate-suite/mxf/Sony-00001.mxf -c:v copy -c:a copy \
> -metadata company_name="xxx" \
> -metadata product_name="xxx" \
> -metadata product_version="xxx" \
> out.mxf
>
> Signed-off-by: Limin Wang <lance.lmw...@gmail.com>
> ---
> fftools/ffmpeg_opt.c | 3 +++
> libavformat/mxfenc.c | 12 ++++++++----
> 2 files changed, 11 insertions(+), 4 deletions(-)
>
> diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
> index c295514..493763b 100644
> --- a/fftools/ffmpeg_opt.c
> +++ b/fftools/ffmpeg_opt.c
> @@ -2650,6 +2650,9 @@ loop_end:
> if(o->recording_time != INT64_MAX)
> av_dict_set(&oc->metadata, "duration", NULL, 0);
> av_dict_set(&oc->metadata, "creation_time", NULL, 0);
> + av_dict_set(&oc->metadata, "company_name", NULL, 0);
> + av_dict_set(&oc->metadata, "product_name", NULL, 0);
> + av_dict_set(&oc->metadata, "product_version", NULL, 0);
> }
> if (!o->metadata_streams_manual)
> for (i = of->ost_index; i < nb_output_streams; i++) {
> diff --git a/libavformat/mxfenc.c b/libavformat/mxfenc.c
> index d8678c9..5244211 100644
> --- a/libavformat/mxfenc.c
> +++ b/libavformat/mxfenc.c
> @@ -722,16 +722,20 @@ static void mxf_write_identification(AVFormatContext *s)
> {
> MXFContext *mxf = s->priv_data;
> AVIOContext *pb = s->pb;
> - const char *company = "FFmpeg";
> - const char *product = s->oformat != &ff_mxf_opatom_muxer ? "OP1a Muxer"
> : "OPAtom Muxer";
> - const char *version;
> + AVDictionaryEntry *com_entry = av_dict_get(s->metadata, "company_name",
> NULL, 0);
> + AVDictionaryEntry *product_entry = av_dict_get(s->metadata,
> "product_name", NULL, 0);
> + AVDictionaryEntry *version_entry = av_dict_get(s->metadata,
> "product_version", NULL, 0);
> + const char *company = com_entry ? com_entry->value : "FFmpeg";
> + const char *product = product_entry ? product_entry->value : s->oformat
> != &ff_mxf_opatom_muxer ? "OP1a Muxer" : "OPAtom Muxer";
> + const char *version = NULL;
> + const char *product_version = version_entry ? version_entry->value :
> AV_STRINGIFY(LIBAVFORMAT_VERSION);
> int length;
>
> mxf_write_metadata_key(pb, 0x013000);
> PRINT_KEY(s, "identification key", pb->buf_ptr - 16);
>
> version = s->flags & AVFMT_FLAG_BITEXACT ?
> - "0.0.0" : AV_STRINGIFY(LIBAVFORMAT_VERSION);
> + "0.0.0" : product_version;
Again, why? If you have a company that maintains a fork of FFmpeg then
compile that info in here instead. Compare with FFmbc which always puts
"FFmbc" as CompanyName.
/Tomas
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