How to deal with the jitter of hard solution picture?

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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#1

Jetson AGX Xavier 32G

deinterlacing line by line processing anti interleaving hard decoding will cause picture jitter. How to solve this problem?

Original flow : http://down.52itv.cn/1/yunnan.ts

Transcoding stream : http://down.52itv.cn/1/out.ts

Execute：./ffmpeg -c:v h264_nvmpi -i ./yunnan.ts -c:v h264_nvmpi -b:v 3M -c:a copy -f mpegts out.ts

Hope to help solve this problem, this problem has been bothering me for a long time!

#3

Hi,
Please take a look at
Jetson Nano FAQ
Q: Is hardware acceleration enabled in ffmpeg?

#4

ffmpeg uses hard decoding to accelerate decoding! Soft solution will not appear, it is decoding this problem!

#5

FFmpeg installed through NVIDIA is the same problem! The following connection

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra %2520Linux%2520Driver%2520Package%2520Development%2520Guide%2 Fmultimedia.html%23wwpID0E0JB0HA

Decoded out of the video stream is also picture jitter!

#6

Hi,
Does it happen if you mux into mp4 or mkv? Timestamp information is not touched in hardware decoding stack, so it looks to be an issue in high-level stacks handling timestamps.

#7

We have purchased two devices, both of which have the same problem. Mpegts streaming has this problem! How to solve this problem!

#8

Hi @DaneLLL

I have the same issue, we have tested with TX2 and AGX both the same when using hardware decode and encode at the same time . my ffmpeg is using from here:


command:
./ffmpeg_g -c:v h264_nvmpi -i http://192.168.8.117:9981/stream/channelnumber/4 -c:v h264_nvmpi -b:v 1000k -bufsize 1800k -c:a aac -ac 2 -b:a 128k -muxrate 1800k -f mpegts test.ts

Thanks

Kind Regards

#9

Hi,
We would suggest try mp4 or mkv. To see if it is specific to ts.

#10

Hi

Thanks for your reply we tested output to mp4 and mkv, both still the same ,and this only happen with the interlacing video , for progressive video works well , so the issue is deinterlacing with hardware acceleration .

Thanks

Kind Regards

#11

Hi,
The package is from community contribution. We have a package enabling hardware decoding. Please give it a try.

https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide%2Fmultimedia.html%23wwpID0E0JB0HA

Hardware accelerated video playback with L4T ffmpeg