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mltframework / mlt

MLT Multimedia Framework
https://www.mltframework.org
GNU Lesser General Public License v2.1
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avformat producer does not cache audio #738

Closed Tjoppen closed 2 years ago

Tjoppen commented 3 years ago

While experimenting with running melt on HTTPS URLs I noticed single-stepping backwards would always result in a seek and a new HTTPS connection having to be set up, verified by watching apache2's access.log on my home server. When running melt with -hide-audio this issue goes away and single-stepping backward/forward works as expected.

Example commands:

melt -producer avformat:https://samples.mplayerhq.hu/MXF/Quantel%20widescreen%20test.mxf

compared to

melt -hide-audio -producer avformat:https://samples.mplayerhq.hu/MXF/Quantel%20widescreen%20test.mxf

This seems to happen with any container format, not just MXF. Looking at producer_avformat.c it indeed seems there's no caching for audio.

I may submit a patch for this, reporting it for now while I investigate some other stuff.

ddennedy commented 2 years ago

Not a bug.