difference between h264_rkmpp and hevc_rkmpp #65

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opened 2025-12-23 10:32:07 +01:00 by backuprepo · 5 comments

backuprepo commented

2025-12-23 10:32:07 +01:00

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Originally created by @ZH-1225 on GitHub (Jun 14, 2024).

./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy h264_rkmpp.mp4
./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4
I used two commands to find that the generated MP4 files were about the same size

Originally created by @ZH-1225 on GitHub (Jun 14, 2024). ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4 I used two commands to find that the generated MP4 files were about the same size

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2025-12-23 10:32:07 +01:00

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backuprepo commented

2025-12-23 10:32:09 +01:00

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@j3dd4h commented on GitHub (Jun 14, 2024):

both using same encoder hevc_rkmpp (-c:v hevc_rkmpp )

@j3dd4h commented on GitHub (Jun 14, 2024): both using same encoder hevc_rkmpp (-c:v hevc_rkmpp )

backuprepo commented

2025-12-23 10:32:09 +01:00

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@Tryanks commented on GitHub (Jun 14, 2024):

./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy h264_rkmpp.mp4
./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4

@Tryanks commented on GitHub (Jun 14, 2024): ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v **hevc_rkmpp** -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v **hevc_rkmpp** -c:a copy hevc_rkmpp.mp4

backuprepo commented

2025-12-23 10:32:09 +01:00

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@ZH-1225 commented on GitHub (Jun 14, 2024):

both using same encoder hevc_rkmpp (-c:v hevc_rkmpp )

./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v h264_rkmpp -c:a copy h264_rkmpp.mp4
./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4

thanks!

@ZH-1225 commented on GitHub (Jun 14, 2024): > both using same encoder hevc_rkmpp (-c:v hevc_rkmpp ) ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v h264_rkmpp -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4 thanks!

backuprepo commented

2025-12-23 10:32:10 +01:00

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@ZH-1225 commented on GitHub (Jun 14, 2024):

./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4
./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v h264_rkmpp -c:a copy h264_rkmpp.mp4
./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4

thanks!

@ZH-1225 commented on GitHub (Jun 14, 2024): > ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v **hevc_rkmpp** -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v **hevc_rkmpp** -c:a copy hevc_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v h264_rkmpp -c:a copy h264_rkmpp.mp4 ./ffmpeg -i /home/pi/Videos/test_ffmpeg.mp4 -c:v hevc_rkmpp -c:a copy hevc_rkmpp.mp4 thanks!

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2025-12-23 10:32:10 +01:00

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@nyanmisaka commented on GitHub (Jun 14, 2024):

You have to set the bitrate or quality factor manually, otherwise the default bitrate of rkmpp encoders is 2000k.

9efe5bcff0/libavcodec/rkmppenc.h (L245)

@nyanmisaka commented on GitHub (Jun 14, 2024): You have to set the bitrate or quality factor manually, otherwise the default bitrate of rkmpp encoders is 2000k. https://github.com/nyanmisaka/ffmpeg-rockchip/blob/9efe5bcff082d6538702d01c9b7126f40da27361/libavcodec/rkmppenc.h#L245