Poor quality encoded MP4 video

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FrankNatoli
Posts: 6
Joined: Wed Nov 27, 2013 12:09 am

Poor quality encoded MP4 video

Post by FrankNatoli » Tue Oct 10, 2017 6:52 pm

Have adapted FFmpeg muxing.c under Windows 7 to write MP4 files from video camera RGB data.
Using muxing.c default bit_rate=400000.
Am not setting global_quality.
Resultant MP4 is poor quality, highly pixelated.
Original raw images in video camera are sharp.
What values should I use for bit_rate? Do I have to also set rc_max_rate?
What values should I use for global_quality? Do I have to set any flags to enable use of global_quality?
Is bit_rate versus global_quality an either/or situation? Or can both be useful in adjusting quality?
Thanks for your time.

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