> On Apr 12, 2022, at 9:26 PM, zhilizhao(赵志立) <quinkbl...@foxmail.com> wrote:
>
>
>
>> On Apr 12, 2022, at 7:45 PM, myp...@gmail.com wrote:
>>
>> On Tue, Apr 12, 2022 at 4:15 PM Zhao Zhili <quinkbl...@foxmail.com> wrote:
>>>
>>> ---
>>> libavformat/hls.c | 59 ++++++++++++++++++++++++++++++++---------------
>>> 1 file changed, 40 insertions(+), 19 deletions(-)
>>>
>> Can these patches handle multiple instances of the media init sections?
>
> Before and after the patch, struct playlist do take multiple media
> initialization sections into consideration. However, I think it doesn’t
> work for HLS as a whole. To support multiple media init sections, it
> needs to handle EXT-X-DISCONTINUITY and recreate mp4 demuxer.
>
> So even if new media init section is show up, it will be downloaded and
> then dropped by mp4 muxer:
I mean mp4 demuxer.
> ```
> if (c->found_moov) {
> av_log(c->fc, AV_LOG_WARNING, "Found duplicated MOOV Atom. Skipped
> it\n");
> avio_skip(pb, atom.size);
> return 0;
> }
> ```
>
> What the patch does is to avoid downloading the same init sections again
> and again, and then dropped by mp4 muxer. It’s common to have init section
> repeat in live mode.
Ditto.
>
> Just for reference, hls.js had the same issue, and have been fixed by
>
> https://github.com/video-dev/hls.js/pull/4452
>
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