User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Firefox/91.0

Steps to reproduce:

Open a page with video content (YouTube, Twitter).

Actual results:

The video player shows an error, and on the console I see.

[Child 164701, MediaDecoderStateMachine #1] WARNING: Decoder=7fc5b5e1cc00 Decode error: NS_ERROR_DOM_MEDIA_DECODE_ERR (0x806e0004) - virtual mozilla::MediaResult mozilla::FFmpegVideoDecoder<58>::DoDecode(mozilla::MediaRawData *, uint8_t *, int, bool *, MediaDataDecoder::DecodedData &): avcodec_send_packet error: -1094995529: file /builds/worker/checkouts/gecko/dom/media/MediaDecoderStateMachine.cpp:3530

Expected results:

The video player should work, and no error should be shown.

The Bugbug bot thinks this bug should belong to the 'Core::Audio/Video: Playback' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.