fix(video): Prevent hang in SkipFramesImpl by adding pop retry limit#342
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xx205 wants to merge 1 commit intodmlc:masterfrom
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fix(video): Prevent hang in SkipFramesImpl by adding pop retry limit#342xx205 wants to merge 1 commit intodmlc:masterfrom
xx205 wants to merge 1 commit intodmlc:masterfrom
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SkipFramesImpl could hang when `decoder_->Pop` returned `false` after receiving an empty NDArray (EAGAIN signal), as the skip counter didn't decrement. If the decoder then stalled, `frame_count_` remained zero, causing subsequent `Pop` calls to fail rapidly at the entry check, leading to hangs or malloc deadlocks. This commit adds a retry limit to the `SkipFramesImpl` loop to break this rapid failure cycle after consecutive `Pop` failures. This improves robustness when skipping frames in problematic videos after seeking.
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yudian0504
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Nov 23, 2025
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SkipFramesImpl could hang when
decoder_->Popreturnedfalseafter receiving an empty NDArray (EAGAIN signal), as the skip counter didn't decrement. If the decoder then stalled,frame_count_remained zero, causing subsequentPopcalls to fail rapidly at the entry check, leading to hangs or malloc deadlocks. This commit adds a retry limit to theSkipFramesImplloop to break this rapid failure cycle after consecutivePopfailures. This improves robustness when skipping frames in problematic videos after seeking.