On Fri, Jul 29, 2011 at 11:10 AM, Yusuke Nakamura
<muken.the.vfrman...@gmail.com> wrote:
> 2011/7/29 Diego Biurrun <di...@biurrun.de>
>>
>> ---
>> libavformat/movenc.c | 17 -----------------
>> 1 files changed, 0 insertions(+), 17 deletions(-)
>>
>> diff --git a/libavformat/movenc.c b/libavformat/movenc.c
>> index c5750d1..10d7abb 100644
>> --- a/libavformat/movenc.c
>> +++ b/libavformat/movenc.c
>> @@ -1400,22 +1400,6 @@ static int mov_write_trak_tag(AVIOContext *pb,
>> MOVTrack *track, AVStream *st)
>> return updateSize(pb, pos);
>> }
>>
>> -#if 0
>> -/* TODO: Not sorted out, but not necessary either */
>> -static int mov_write_iods_tag(AVIOContext *pb, MOVMuxContext *mov)
>> -{
>> - avio_wb32(pb, 0x15); /* size */
>> - ffio_wfourcc(pb, "iods");
>> - avio_wb32(pb, 0); /* version & flags */
>> - avio_wb16(pb, 0x1007);
>> - avio_w8(pb, 0);
>> - avio_wb16(pb, 0x4fff);
>> - avio_wb16(pb, 0xfffe);
>> - avio_wb16(pb, 0x01ff);
>> - return 0x15;
>> -}
>> -#endif
>> -
>> static int mov_write_mvhd_tag(AVIOContext *pb, MOVMuxContext *mov)
>> {
>> int maxTrackID = 1, i;
>> @@ -1821,7 +1805,6 @@ static int mov_write_moov_tag(AVIOContext *pb,
>> MOVMuxContext *mov,
>> }
>>
>> mov_write_mvhd_tag(pb, mov);
>> - //mov_write_iods_tag(pb, mov);
>> for (i=0; i<mov->nb_streams; i++) {
>> if(mov->tracks[i].entry > 0) {
>> mov_write_trak_tag(pb, &(mov->tracks[i]), i < s->nb_streams ?
>> s->streams[i] : NULL);
>> --
>> 1.7.1
>>
>> _______________________________________________
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>> libav-devel@libav.org
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>
> Oh?
> libav doesn't support MP4 ver.2 (mp42)?
> Then, this is spec violation.
> For MP4 ver.1 (mp41), Object Descriptor Box (iods) is mandatory.
> For MP4 ver.2, not mandatory.
>
It is also mandatory in the 'isom', 'avc1' ,'iso2', and 'iso3' brands
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