Hello,
I have been experiencing artifacts when playing nvenc h264 encoded videos. The artifacts are similar in description to the following thread: Nondeterministic artifacts with T4 GPU H264 NVENC encoding
This thread states that this is a known Turing issue and should be fixed in upcoming releases, pointing to r440 as a possible fix.
However, the driver I originally worked with is r515, and I have upgraded up to r550 enterprise - with no luck. The artifacts are indeed weaker with r550, but they still occur once in a while. I also noticed that with both drivers, the artifacts get stronger the higher the bitrate we encode in.
I am using ffmpeg’s nvenc integration to encode the video, and I play the encoded video with ffmpeg.
Every time I see an artifact I also get two ffmpeg error logs:
- left block unavailable for requested intra/intra4x4 mode (-1)
- error while decoding MB * *, bytestream *
I would be grateful to receive possible solutions for this issue, and would be glad to answer any follow up questions that might come up.
Thank you in advance!