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kingslay / KSPlayer

A video player for iOS、macOS、tvOS、visionOS , based on AVPlayer and FFmpeg, support the horizontal, vertical screen. support adjust volume, brightness and seek by slide, support subtitles.
GNU General Public License v3.0
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Wrong startTime in MEPlayerItem #653

Closed romanyczn1 closed 7 months ago

romanyczn1 commented 7 months ago

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

  1. Set KSOptions.firstPlayerType = KSMEPlayer.self KSOptions.secondPlayerType = KSMEPlayer.self
  2. Set video url "https://playertest.longtailvideo.com/adaptive/customIV/prog_index.m3u8"
  3. The startTime and duration in MEPlayerItem are incorrect, the startTime is 9.956011, and duration also calculated incorrectly baset on startTime

or

  1. Pass url "https://playertest.longtailvideo.com/adaptive/customIV/prog_index.m3u8" to SwiftUI demo
  2. Video duration calculated incorrectly

Expected behavior The startTime is zero, and duration is correct

charsdavy commented 7 months ago

https://playertest.longtailvideo.com/adaptive/customIV/prog_index.m3u8 使用这条链接地址，在IINA上播放，可以拉进度条，且能及时响应显示画面。但是在 KSPlayer 上，拉进度条后，画面黑屏，声音依旧还在。这个问题应该是没有很好的解决。

kingslay commented 7 months ago

在Mac上是会有这个问题，你双击全屏下，就不会黑屏了。

charsdavy commented 7 months ago

Mac 播放本地.m3u8 也是有黑屏问题。但是按照你所说，全屏一下后，再次进行拉进度条，就不会黑屏。这是为什么呢？一定要操做一下全屏？问题能修复吗？

kingslay commented 7 months ago

这个问题很奇怪，我也还没找到解决的bug。

charsdavy commented 7 months ago

warning KSPlayer: MEPlayerItem.swift:129 MEPlayerItem | vt decoder cb: output image buffer is null: -12909 error KSPlayer: MEPlayerItem.swift:129 MEPlayerItem | hardware accelerator failed to decode picture 黑屏的错误信息是这两条。看看有帮助没。

charsdavy commented 7 months ago

FFmpegDecode.swift中如下改动，可以解决该问题。这样的改法是否有其他影响，麻烦看一下

func doFlushCodec() {
        bestEffortTimestamp = Int64(0)
        if firstSeek {
            firstSeek = false
        } else {
//            if codecContext != nil {
//                avcodec_flush_buffers(codecContext)
//            }
        }
    }
kingslay commented 7 months ago

文档里面说seek的时候需要调用这个。可以先不用调用这个。然后看下多次seek之后。会不会有内存泄漏的情况

charsdavy commented 7 months ago

firstSeek = true 时也没有调用 avcodec_flush_buffers 方法，如果有内存泄漏，那不是早就有了。