[FFmpeg-devel] [PATCH 05/11] avformat/dashenc: setting @availabilityStartTime when the first frame is ready

[Dixit, Vishwanath]

On 4/2/18 9:29 AM, Jeyapal, Karthick wrote:
>
>
> On 3/23/18 10:56 AM, vdixit at akamai.com wrote:
>> From: Vishwanath Dixit <vdixit at akamai.com>
>>
>> @availabilityStartTime specifies the anchor for the computation of the earliest
>> availability time (in UTC) for any Segment in the Media Presentation.
> Please be little more verbose for a clearer explanation.
Thanks for the review. I have submitted the revised patch https://patchwork.ffmpeg.org/patch/8315/. 				
>> ---
>>  libavformat/dashenc.c | 7 ++++---
>>  1 file changed, 4 insertions(+), 3 deletions(-)
>>
>> diff --git a/libavformat/dashenc.c b/libavformat/dashenc.c
>> index 7b854b5..b62cb3e 100644
>> --- a/libavformat/dashenc.c
>> +++ b/libavformat/dashenc.c
>> @@ -740,9 +740,6 @@ static int write_manifest(AVFormatContext *s, int final)
>>              update_period = 500;
>>          avio_printf(out, "\tminimumUpdatePeriod=\"PT%"PRId64"S\"\n", update_period);
>>          avio_printf(out, "\tsuggestedPresentationDelay=\"PT%"PRId64"S\"\n", c->last_duration / AV_TIME_BASE);
>> -        if (!c->availability_start_time[0] && s->nb_streams > 0 && c->streams[0].nb_segments > 0) {
>> -            format_date_now(c->availability_start_time, sizeof(c->availability_start_time));
>> -        }
>>          if (c->availability_start_time[0])
>>              avio_printf(out, "\tavailabilityStartTime=\"%s\"\n", c->availability_start_time);
>>          format_date_now(now_str, sizeof(now_str));
>> @@ -1282,6 +1279,10 @@ static int dash_write_packet(AVFormatContext *s, AVPacket *pkt)
>>      if (os->first_pts == AV_NOPTS_VALUE)
>>          os->first_pts = pkt->pts;
>>  
>> +    if (!c->availability_start_time[0])
>> +        format_date_now(c->availability_start_time,
>> +                        sizeof(c->availability_start_time));
>> +
>>      if (c->use_template && !c->use_timeline) {
>>          elapsed_duration = pkt->pts - os->first_pts;
>>          seg_end_duration = (int64_t) os->segment_index * c->seg_duration;
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