Detecting empty streams #3

New Issue

erth9960 · 2021-10-11T15:02:00+02:00

erth9960 commented

2021-10-11 15:02:00 +02:00

When recording a lecture, all sources are recorded regardless of content or lack thereof. Transcoding a purely black stream takes about as long as a video with content. This problem also applies when importing from mediasite.

If there is a way to efficiently detect that a stream is all black, we could save significant amounts of transcoding time.

ffmpeg has a filter called blackdetect that may do the job, but it seems to use too much time.

When recording a lecture, all sources are recorded regardless of content or lack thereof. Transcoding a purely black stream takes about as long as a video with content. This problem also applies when importing from mediasite. If there is a way to efficiently detect that a stream is all black, we could save significant amounts of transcoding time. ffmpeg has a filter called `blackdetect` that may do the job, but it seems to use too much time.

erth9960 added the

Research

label 2021-10-11 15:05:30 +02:00

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