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cvdfoundation / kinetics-dataset

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使用mmaction2的RGB帧提取工具出现错误 #32

Closed LEM0NTE closed 2 years ago

LEM0NTE commented 2 years ago

不知道是否有人使用mmaction2的RGB帧提取工具。我下载了k400数据集后，成功解压并按照mmaction2的命名习惯重新命名了文件夹，然后提取RGB帧时却提示没有找到相应的视频文件。 image 是否有人可以给我提供一些帮助或者指出可能存在的问题（已经检查过视频文件夹，确定目标路径下有相应的.mp4视频文件）

TengdaHan commented 2 years ago

你好！我建议先用基础的ffmpeg指令检查视频文件是否正常，比如：ffmpeg -i path_to_input_video.mp4 '%04d.jpg'，这可以确认问题来自mmaction2还是视频本身。如果视频本身损坏，欢迎回复。

(Translate just in case)

LEM0NTE commented 2 years ago

您好，我用ffmpeg首先检查了train文件夹下的视频，确实给出了errorlog，例如如图所示 image 请问这种情况进一步应该怎样处理呢。 感谢您的答复！

TengdaHan commented 2 years ago

看起来可能有少量视频文件损坏了。短期办法：忽略这些损坏的视频，照常使用K400，少量视频缺失不影响结果。长期办法：管理员会检查一下AWS里的这些文件，但需要一段时间。

(Translate just in case) Short-term solution: keep using K400, ignoring these corrupted videos. Missing small number of videos have negligible effect on results. Long-term solution: we could check these videos in AWS, but it takes a while.

To @kinetics-cvdf : It seems some K400 videos are corrupted, right? Are they reported elsewhere?

kinetics-cvdf commented 2 years ago

Right, seems like. Probably best is to simply remove them (unless someone has the original uncorrupted versions). Note that this repository will still have a lot more videos than if downloading from youtube.

LEM0NTE commented 2 years ago

看起来可能有少量视频文件损坏了。短期办法：忽略这些损坏的视频，照常使用K400，少量视频缺失不影响结果。长期办法：管理员会检查一下AWS里的这些文件，但需要一段时间。

(Translate just in case) Short-term solution: keep using K400, ignoring these corrupted videos. Missing small number of videos have negligible effect on results. Long-term solution: we could check these videos in AWS, but it takes a while.

To @kinetics-cvdf : It seems some K400 videos are corrupted, right? Are they reported elsewhere?

所以这样看来应该是mmaction那边的问题了，毕竟仍然有一部分视频是正常的，但是他们的工具提取到的帧是0个。感谢您的回复，我去那边的库提issue

TengdaHan commented 2 years ago

Great! @kinetics-cvdf I think this issue can be closed.

kinetics-cvdf commented 2 years ago

Thank you Tengda. Will do so.