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大文件probe时间较长，如何优化 #335

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yigu-cao opened this issue Apr 22, 2024 · 5 comments
Closed

大文件probe时间较长，如何优化 #335

yigu-cao opened this issue Apr 22, 2024 · 5 comments

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@yigu-cao
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超过2G的大文件，probe阶段时间过长，大于一分钟，probe阶段只需获取媒体基本信息，可以提供优化思路么
@ireader
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ireader commented Apr 22, 2024

请详细描述下问题, 包括文件格式, 音视频详情, probe方式等.

@yigu-cao
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格式： MKV
Size: 1.5G
流程：mkv_reader_create--->mkv_reader_getinfo，此阶段耗时1min多
image

@ireader
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ireader commented Apr 23, 2024

mkv_reader_read会把整个文件全部读一遍， 所以打开比较慢。

可以尝试下mkv_reader_read2函数， 编译时加上MKV_LIVE_STREAMING宏。

@yigu-cao
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格式： MP4
Size: 2.2G
流程：mov_reader_create--->mov_reader_getinfo
现象：媒体信息解析失败，大文件均解析失败，是哪里判断有问题么
image

@yigu-cao
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加打印试下，分析哪些字段判断问题

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@ireader @yigu-cao