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libavformat/hls: Reset options after open_url_keepalive() fails

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open_url_keepalive() unsets the options when it uses them, this
includes the offsets for the Range: header. When using the HLS
tag #EXT-X-BYTERANGE along with multiple files, the range options
must be preserved after open_url_keepalive() returns EOF so that
the new file can be opened. Failure to do this results in ignoring
the #EXT-X-BYTERANGE tag and reading the wrong bytes of the file.

To fix it, reset the options before calling io_open() following
open_url_keepalive() reaching EOF

Reviewed-by: Steven Liu <liuqi05@kuaishou.com>
This commit is contained in:
Ed Martin 2021-03-10 21:43:10 +00:00 committed by Steven Liu
parent 8e77624e84
commit 63344337f9
1 changed files with 2 additions and 0 deletions
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libavformat/hls.c
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@ -677,6 +677,8 @@ static int open_url(AVFormatContext *s, AVIOContext **pb, const char *url,
av_log(s, AV_LOG_WARNING,
"keepalive request failed for '%s' with error: '%s' when opening url, retrying with new connection\n",
url, av_err2str(ret));
av_dict_copy(&tmp, *opts, 0);
av_dict_copy(&tmp, opts2, 0);
ret = s->io_open(s, pb, url, AVIO_FLAG_READ, &tmp);
}
} else {