How can I verify if FEC is working? I am not hearing any changes with fec enabled vs disabled with 30% packet loss
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Description
I am running an opus encode decode pipelein. This takes in a raw pcm at 16 KHz mono and encodes with FEC enabled at 16 kbps and complexity = 10. The frame size is 40 ms and I am simulating packet loss by not dropping the encoded packets. The decoder then decodes with decode_fec = true if it sees a packet missing (using sequence numbers) and decodes the packet again with decode_fec = false.
I dont hear any difference when I enable FEC or if I disable FEC. Are there specific settings for the encoder that allow the FEC to work??
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Research direction
No source file or test is named. Start by reproducing the described Opus encode/decode pipeline with 16 kHz mono PCM, 40 ms frames, 16 kbps, 30% loss, and the stated decode_fec sequence. Done means determining whether FEC is actually exercised and identifying the settings or procedure that demonstrates its effect.
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Assessment
- Tech stack
- c
- Domain
- audio-video-rtc
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 30/100