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avcodec_send_frame(codec_ctx_, frame_) failed. #1

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opened 2025-12-23 10:30:03 +01:00 by backuprepo · 8 comments
backuprepo commented 2025-12-23 10:30:03 +01:00
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Originally created by @MapleAura on GitHub (Jan 3, 2024).

This work is fantastic. But I'm having a problem when using this library.
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Do you know how to fix it?

Originally created by @MapleAura on GitHub (Jan 3, 2024). This work is fantastic. But I'm having a problem when using this library. ![image](https://github.com/nyanmisaka/ffmpeg-rockchip/assets/149750728/7e2e9536-0bbe-4a4d-900f-e8acedd52431) ![image](https://github.com/nyanmisaka/ffmpeg-rockchip/assets/149750728/06b07c00-0289-4fc6-99e9-55c7a67bf6de) ![image](https://github.com/nyanmisaka/ffmpeg-rockchip/assets/149750728/65c9811e-8515-4de5-8574-d3c8d9491436) Do you know how to fix it?
backuprepo commented 2025-12-23 10:30:05 +01:00
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@nyanmisaka commented on GitHub (Jan 3, 2024):

  1. First please test the encoder to make sure there is no runtime or /dev/{dma_heap,dri} permission issues.
    https://github.com/nyanmisaka/ffmpeg-rockchip/wiki/Encoder#test-encoders

  2. The mpp_buf_get func from MPP segfaults usually means the parameter can be invalid. Such as mpp_buf_size. Can you trace the hwfc->width and hwfc->height to make sure it has valid values?

These values MUST be set by the user.
https://ffmpeg.org/doxygen/trunk/structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956

9e7314093f/libavcodec/rkmppenc.c (L775-L777)

@nyanmisaka commented on GitHub (Jan 3, 2024): 1. First please test the encoder to make sure there is no runtime or `/dev/{dma_heap,dri}` permission issues. https://github.com/nyanmisaka/ffmpeg-rockchip/wiki/Encoder#test-encoders 2. The `mpp_buf_get` func from MPP segfaults usually means the parameter can be invalid. Such as `mpp_buf_size`. Can you trace the `hwfc->width` and `hwfc->height` to make sure it has valid values? These values MUST be set by the user. https://ffmpeg.org/doxygen/trunk/structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956 https://github.com/nyanmisaka/ffmpeg-rockchip/blob/9e7314093f635b2641c15e756ec45d2a9bc9f0b9/libavcodec/rkmppenc.c#L775-L777
backuprepo commented 2025-12-23 10:30:06 +01:00
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@MapleAura commented on GitHub (Jan 3, 2024):

  1. First please test the encoder to make sure there is no runtime or /dev/{dma_heap,dri} permission issues.
    https://github.com/nyanmisaka/ffmpeg-rockchip/wiki/Encoder#test-encoders
  2. The mpp_buf_get func from MPP segfaults usually means the parameter can be invalid. Such as mpp_buf_size. Can you trace the hwfc->width and hwfc->height to make sure it has valid values?

These values MUST be set by the user. https://ffmpeg.org/doxygen/trunk/structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956

9e7314093f/libavcodec/rkmppenc.c (L775-L777)

I tested it using the first method.
gdb --args ffmpeg -f lavfi -i testsrc2=s=1920x1080,format=nv12 -c:v hevc_rkmpp -qp_init 26 -profile:v main -level 4.1 -g:v 100 -vframes 5000 -y /data/tmp.mp4

Stack:
#0 0x0000007ff50a5e94 in mpp_buffer_create () from /usr/lib/aarch64-linux-gnu/rockchip/librockchip_mpp.so.1
#1 0x0000007ff50a900c in mpp_buffer_get_with_tag () from /usr/lib/aarch64-linux-gnu/rockchip/librockchip_mpp.so.1
#2 0x0000007ff5bf6240 in rkmpp_drm_pool_alloc (opaque=0x55555c29d0, size=) at libavutil/hwcontext_rkmpp.c:216
#3 0x0000007ff5be7b30 in pool_alloc_buffer (pool=0x55555d7be0) at libavutil/buffer.c:362
#4 av_buffer_pool_get (pool=0x55555d7be0) at libavutil/buffer.c:401
#5 0x0000007ff5bf5d30 in rkmpp_get_buffer (hwfc=0x55555c29d0, frame=0x55555d98c0) at libavutil/hwcontext_rkmpp.c:328
#6 0x0000007ff5bf4ae0 in av_hwframe_get_buffer (hwframe_ref=, frame=0x55555d98c0, flags=flags@entry=0) at libavutil/hwcontext.c:563
#7 0x0000007ff70e5bbc in rkmpp_submit_frame (frame=0x55555b8fd0, avctx=0x55555bb1a0) at libavcodec/rkmppenc.c:497
#8 rkmpp_encode_frame (avctx=0x55555bb1a0, packet=0x7fe0000bd0, frame=0x55555b8fd0, got_packet=0x7fffffe544) at libavcodec/rkmppenc.c:714
#9 0x0000007ff6f0af1c in ff_encode_encode_cb (avctx=avctx@entry=0x55555bb1a0, avpkt=0x7fe0000bd0, frame=0x55555b8fd0, got_packet=0x7fffffe544) at libavcodec/encode.c:264
#10 0x0000007ff6f0b338 in encode_simple_internal (avpkt=0x7fe0000bd0, avctx=0x55555bb1a0) at libavcodec/encode.c:350
#11 encode_simple_receive_packet (avpkt=, avctx=) at libavcodec/encode.c:364
#12 encode_receive_packet_internal (avctx=avctx@entry=0x55555bb1a0, avpkt=0x7fe0000bd0) at libavcodec/encode.c:398
#13 0x0000007ff6f0b598 in avcodec_send_frame (avctx=avctx@entry=0x55555bb1a0, frame=frame@entry=0x55555d7c50) at libavcodec/encode.c:541
#14 0x00000055555651e0 in encode_frame (of=of@entry=0x55555b9ad0, ost=ost@entry=0x55555bae40, frame=frame@entry=0x55555d7c50) at fftools/ffmpeg_enc.c:644
#15 0x0000005555565964 in submit_encode_frame (of=of@entry=0x55555b9ad0, ost=ost@entry=0x55555bae40, frame=, frame@entry=0x55555b92a0) at fftools/ffmpeg_enc.c:750
#16 0x0000005555565b30 in do_video_out (in_picture=0x55555b92a0, ost=0x55555bae40, of=0x55555b9ad0) at fftools/ffmpeg_enc.c:846
#17 enc_frame (ost=ost@entry=0x55555bae40, frame=frame@entry=0x55555b92a0) at fftools/ffmpeg_enc.c:860
#18 0x0000005555567ed8 in fg_output_frame (ofp=ofp@entry=0x55555bbe00, frame=frame@entry=0x55555b9730) at fftools/ffmpeg_filter.c:2125
#19 0x00000055555697ac in fg_output_step (flush=0, ofp=0x55555bbe00) at fftools/ffmpeg_filter.c:2220
#20 reap_filters (flush=, fg=) at fftools/ffmpeg_filter.c:2239
#21 reap_filters (fg=0x55555bb7e0, flush=0) at fftools/ffmpeg_filter.c:2228
#22 0x000000555555da88 in transcode_step (ost=) at fftools/ffmpeg.c:1155
#23 transcode (err_rate_exceeded=) at fftools/ffmpeg.c:1204
#24 main (argc=, argv=) at fftools/ffmpeg.c:1330

It seems that the error is the same as before. (Stack#2)
I've checked the width and height to make sure the values are valid.(1920*1080)

@MapleAura commented on GitHub (Jan 3, 2024): > 1. First please test the encoder to make sure there is no runtime or `/dev/{dma_heap,dri}` permission issues. > https://github.com/nyanmisaka/ffmpeg-rockchip/wiki/Encoder#test-encoders > 2. The `mpp_buf_get` func from MPP segfaults usually means the parameter can be invalid. Such as `mpp_buf_size`. Can you trace the `hwfc->width` and `hwfc->height` to make sure it has valid values? > > These values MUST be set by the user. https://ffmpeg.org/doxygen/trunk/structAVCodecContext.html#a0d8f46461754e8abea0847dcbc41b956 > > https://github.com/nyanmisaka/ffmpeg-rockchip/blob/9e7314093f635b2641c15e756ec45d2a9bc9f0b9/libavcodec/rkmppenc.c#L775-L777 I tested it using the first method. gdb --args ffmpeg -f lavfi -i testsrc2=s=1920x1080,format=nv12 -c:v hevc_rkmpp -qp_init 26 -profile:v main -level 4.1 -g:v 100 -vframes 5000 -y /data/tmp.mp4 Stack: #0 0x0000007ff50a5e94 in mpp_buffer_create () from /usr/lib/aarch64-linux-gnu/rockchip/librockchip_mpp.so.1 #1 0x0000007ff50a900c in mpp_buffer_get_with_tag () from /usr/lib/aarch64-linux-gnu/rockchip/librockchip_mpp.so.1 #2 0x0000007ff5bf6240 in rkmpp_drm_pool_alloc (opaque=0x55555c29d0, size=<optimized out>) at libavutil/hwcontext_rkmpp.c:216 #3 0x0000007ff5be7b30 in pool_alloc_buffer (pool=0x55555d7be0) at libavutil/buffer.c:362 #4 av_buffer_pool_get (pool=0x55555d7be0) at libavutil/buffer.c:401 #5 0x0000007ff5bf5d30 in rkmpp_get_buffer (hwfc=0x55555c29d0, frame=0x55555d98c0) at libavutil/hwcontext_rkmpp.c:328 #6 0x0000007ff5bf4ae0 in av_hwframe_get_buffer (hwframe_ref=<optimized out>, frame=0x55555d98c0, flags=flags@entry=0) at libavutil/hwcontext.c:563 #7 0x0000007ff70e5bbc in rkmpp_submit_frame (frame=0x55555b8fd0, avctx=0x55555bb1a0) at libavcodec/rkmppenc.c:497 #8 rkmpp_encode_frame (avctx=0x55555bb1a0, packet=0x7fe0000bd0, frame=0x55555b8fd0, got_packet=0x7fffffe544) at libavcodec/rkmppenc.c:714 #9 0x0000007ff6f0af1c in ff_encode_encode_cb (avctx=avctx@entry=0x55555bb1a0, avpkt=0x7fe0000bd0, frame=0x55555b8fd0, got_packet=0x7fffffe544) at libavcodec/encode.c:264 #10 0x0000007ff6f0b338 in encode_simple_internal (avpkt=0x7fe0000bd0, avctx=0x55555bb1a0) at libavcodec/encode.c:350 #11 encode_simple_receive_packet (avpkt=<optimized out>, avctx=<optimized out>) at libavcodec/encode.c:364 #12 encode_receive_packet_internal (avctx=avctx@entry=0x55555bb1a0, avpkt=0x7fe0000bd0) at libavcodec/encode.c:398 #13 0x0000007ff6f0b598 in avcodec_send_frame (avctx=avctx@entry=0x55555bb1a0, frame=frame@entry=0x55555d7c50) at libavcodec/encode.c:541 #14 0x00000055555651e0 in encode_frame (of=of@entry=0x55555b9ad0, ost=ost@entry=0x55555bae40, frame=frame@entry=0x55555d7c50) at fftools/ffmpeg_enc.c:644 #15 0x0000005555565964 in submit_encode_frame (of=of@entry=0x55555b9ad0, ost=ost@entry=0x55555bae40, frame=<optimized out>, frame@entry=0x55555b92a0) at fftools/ffmpeg_enc.c:750 #16 0x0000005555565b30 in do_video_out (in_picture=0x55555b92a0, ost=0x55555bae40, of=0x55555b9ad0) at fftools/ffmpeg_enc.c:846 #17 enc_frame (ost=ost@entry=0x55555bae40, frame=frame@entry=0x55555b92a0) at fftools/ffmpeg_enc.c:860 #18 0x0000005555567ed8 in fg_output_frame (ofp=ofp@entry=0x55555bbe00, frame=frame@entry=0x55555b9730) at fftools/ffmpeg_filter.c:2125 #19 0x00000055555697ac in fg_output_step (flush=0, ofp=0x55555bbe00) at fftools/ffmpeg_filter.c:2220 #20 reap_filters (flush=<optimized out>, fg=<optimized out>) at fftools/ffmpeg_filter.c:2239 #21 reap_filters (fg=0x55555bb7e0, flush=0) at fftools/ffmpeg_filter.c:2228 #22 0x000000555555da88 in transcode_step (ost=<optimized out>) at fftools/ffmpeg.c:1155 #23 transcode (err_rate_exceeded=<synthetic pointer>) at fftools/ffmpeg.c:1204 #24 main (argc=<optimized out>, argv=<optimized out>) at fftools/ffmpeg.c:1330 It seems that the error is the same as before. (Stack#2) I've checked the width and height to make sure the values are valid.(1920*1080)
backuprepo commented 2025-12-23 10:30:06 +01:00
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@nyanmisaka commented on GitHub (Jan 3, 2024):

Which Rockchip linux kernel are you using? (5.10 or 6.1-devel)

And which platform? (3588, 356x or older 33xx)

@nyanmisaka commented on GitHub (Jan 3, 2024): Which Rockchip linux kernel are you using? (5.10 or 6.1-devel) And which platform? (3588, 356x or older 33xx)
backuprepo commented 2025-12-23 10:30:06 +01:00
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@MapleAura commented on GitHub (Jan 3, 2024):

Which Rockchip linux kernel are you using? (5.10 or 6.1-devel)

And which platform? (3588, 356x or older 33xx)

5.10 3588

@MapleAura commented on GitHub (Jan 3, 2024): > Which Rockchip linux kernel are you using? (5.10 or 6.1-devel) > > And which platform? (3588, 356x or older 33xx) 5.10 3588
backuprepo commented 2025-12-23 10:30:07 +01:00
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@nyanmisaka commented on GitHub (Jan 3, 2024):

  • Make sure these device files exist.
# DRM allocator
/dev/dri

# DMA_HEAP allocator
/dev/dma_heap

# RGA filters
/dev/rga

# MPP codecs
/dev/mpp_service
  • Add the following lines into /etc/udev/rules.d/99-rk-device-permissions.rules and reboot.
KERNEL=="mpp_service", MODE="0660", GROUP="video"
KERNEL=="rga", MODE="0660", GROUP="video"
KERNEL=="system-dma32", MODE="0666", GROUP="video"
KERNEL=="system-uncached", MODE="0666", GROUP="video"
KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap"
@nyanmisaka commented on GitHub (Jan 3, 2024): - Make sure these device files exist. ``` # DRM allocator /dev/dri # DMA_HEAP allocator /dev/dma_heap # RGA filters /dev/rga # MPP codecs /dev/mpp_service ``` - Add the following lines into `/etc/udev/rules.d/99-rk-device-permissions.rules` and reboot. ``` KERNEL=="mpp_service", MODE="0660", GROUP="video" KERNEL=="rga", MODE="0660", GROUP="video" KERNEL=="system-dma32", MODE="0666", GROUP="video" KERNEL=="system-uncached", MODE="0666", GROUP="video" KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap" ``` - Re-build and install the latest MPP from https://github.com/rockchip-linux/mpp and try again.
backuprepo commented 2025-12-23 10:30:07 +01:00
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@MapleAura commented on GitHub (Jan 4, 2024):

  • Make sure these device files exist.
# DRM allocator
/dev/dri

# DMA_HEAP allocator
/dev/dma_heap

# RGA filters
/dev/rga

# MPP codecs
/dev/mpp_service
  • Add the following lines into /etc/udev/rules.d/99-rk-device-permissions.rules and reboot.
KERNEL=="mpp_service", MODE="0660", GROUP="video"
KERNEL=="rga", MODE="0660", GROUP="video"
KERNEL=="system-dma32", MODE="0666", GROUP="video"
KERNEL=="system-uncached", MODE="0666", GROUP="video"
KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap"

Thank you very much. Followed your last piece of advice and is working now.

@MapleAura commented on GitHub (Jan 4, 2024): > * Make sure these device files exist. > > ``` > # DRM allocator > /dev/dri > > # DMA_HEAP allocator > /dev/dma_heap > > # RGA filters > /dev/rga > > # MPP codecs > /dev/mpp_service > ``` > > * Add the following lines into `/etc/udev/rules.d/99-rk-device-permissions.rules` and reboot. > > ``` > KERNEL=="mpp_service", MODE="0660", GROUP="video" > KERNEL=="rga", MODE="0660", GROUP="video" > KERNEL=="system-dma32", MODE="0666", GROUP="video" > KERNEL=="system-uncached", MODE="0666", GROUP="video" > KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap" > ``` > > * Re-build and install the latest MPP from https://github.com/rockchip-linux/mpp and try again. Thank you very much. Followed your last piece of advice and is working now.
backuprepo commented 2025-12-23 10:30:08 +01:00
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@gjm19761 commented on GitHub (Jan 8, 2024):

ok following that, doing the mpp tests, 1080p h264 hardware encoding etc work, but hevc does not, get this error ;

[hevc_rkmpp @ 0xaaaae3ae2aa0] Failed to init MPP context: -1
[vost#0:0/hevc_rkmpp @ 0xaaaae3ae2700] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height.
Error while filtering: Generic error in an external library
[out#0/mp4 @ 0xaaaae3ae1330] Nothing was written into output file, because at least one of its streams received no packets.

@gjm19761 commented on GitHub (Jan 8, 2024): ok following that, doing the mpp tests, 1080p h264 hardware encoding etc work, but hevc does not, get this error ; [hevc_rkmpp @ 0xaaaae3ae2aa0] Failed to init MPP context: -1 [vost#0:0/hevc_rkmpp @ 0xaaaae3ae2700] Error while opening encoder - maybe incorrect parameters such as bit_rate, rate, width or height. Error while filtering: Generic error in an external library [out#0/mp4 @ 0xaaaae3ae1330] Nothing was written into output file, because at least one of its streams received no packets.
backuprepo commented 2025-12-23 10:30:08 +01:00
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@outhud commented on GitHub (Aug 21, 2024):

  • Make sure these device files exist.
# DRM allocator
/dev/dri

# DMA_HEAP allocator
/dev/dma_heap

# RGA filters
/dev/rga

# MPP codecs
/dev/mpp_service
  • Add the following lines into /etc/udev/rules.d/99-rk-device-permissions.rules and reboot.
KERNEL=="mpp_service", MODE="0660", GROUP="video"
KERNEL=="rga", MODE="0660", GROUP="video"
KERNEL=="system-dma32", MODE="0666", GROUP="video"
KERNEL=="system-uncached", MODE="0666", GROUP="video"
KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap"

Thank you. I was getting the same error with Armbian 24.5 Bookworm with kernel 6.1.75-vendor-rk35xx on RK3566.

For anyone with the same problem, it was the either adding those udev rules and/or the reboot which fixed it for me.

@outhud commented on GitHub (Aug 21, 2024): > * Make sure these device files exist. > > ``` > # DRM allocator > /dev/dri > > # DMA_HEAP allocator > /dev/dma_heap > > # RGA filters > /dev/rga > > # MPP codecs > /dev/mpp_service > ``` > > * Add the following lines into `/etc/udev/rules.d/99-rk-device-permissions.rules` and reboot. > > ``` > KERNEL=="mpp_service", MODE="0660", GROUP="video" > KERNEL=="rga", MODE="0660", GROUP="video" > KERNEL=="system-dma32", MODE="0666", GROUP="video" > KERNEL=="system-uncached", MODE="0666", GROUP="video" > KERNEL=="system-uncached-dma32", MODE="0666", GROUP="video" RUN+="/usr/bin/chmod a+rw /dev/dma_heap" > ``` > > * Re-build and install the latest MPP from https://github.com/rockchip-linux/mpp and try again. Thank you. I was getting the same error with Armbian 24.5 Bookworm with kernel 6.1.75-vendor-rk35xx on RK3566. For anyone with the same problem, it was the either adding those udev rules and/or the reboot which fixed it for me.
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