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使用ffprobe, pix_fmt返回的是DRM_PRIME, Ubuntu20.04下ffprobe返回的是yuv420p10le #211

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opened 2025-12-23 10:36:03 +01:00 by backuprepo · 3 comments
backuprepo commented 2025-12-23 10:36:03 +01:00
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Originally created by @cnjswwxbtcc on GitHub (Sep 5, 2025).

本仓库编译出来的ffprobe:

# ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4
mpp[17980]: mpp_platform: client 16 driver is not ready!
{
mpp[17980]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc
mpp[17980]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc
    "programs": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "drm_prime",
            "level": -99,
            "refs": 1,
            "bit_rate": "3019301"
        }
    ]
}
# ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 10bit\ 3M.mp4
mpp[18030]: mpp_platform: client 16 driver is not ready!
{
mpp[18030]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc
mpp[18030]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc
    "programs": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "drm_prime",
            "level": -99,
            "refs": 1,
            "bit_rate": "3018401"
        }
    ]
}

Ubuntu20.04 ffprobe:

❯ ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4
{
    "programs": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "profile": "Main",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "yuv420p",
            "level": 123,
            "refs": 1,
            "bit_rate": "3019301"
        }
    ]
}
❯ ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 10bit\ 3M.mp4
{
    "programs": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "profile": "Main 10",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "yuv420p10le",
            "level": 123,
            "refs": 1,
            "bit_rate": "3018401"
        }
    ]
}
Originally created by @cnjswwxbtcc on GitHub (Sep 5, 2025). 本仓库编译出来的ffprobe: ```bash # ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4 mpp[17980]: mpp_platform: client 16 driver is not ready! { mpp[17980]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc mpp[17980]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc "programs": [ ], "streams": [ { "codec_name": "hevc", "width": 1920, "height": 1080, "pix_fmt": "drm_prime", "level": -99, "refs": 1, "bit_rate": "3019301" } ] } # ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 10bit\ 3M.mp4 mpp[18030]: mpp_platform: client 16 driver is not ready! { mpp[18030]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc mpp[18030]: mpp_info: mpp version: 90c205ca author: Alexander Koval 2025-08-25 fix[vdpp] Fix building tests against musl libc "programs": [ ], "streams": [ { "codec_name": "hevc", "width": 1920, "height": 1080, "pix_fmt": "drm_prime", "level": -99, "refs": 1, "bit_rate": "3018401" } ] } ``` Ubuntu20.04 ffprobe: ```bash ❯ ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4 { "programs": [ ], "streams": [ { "codec_name": "hevc", "profile": "Main", "width": 1920, "height": 1080, "pix_fmt": "yuv420p", "level": 123, "refs": 1, "bit_rate": "3019301" } ] } ❯ ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height,pix_fmt,bit_rate,refs -of json Test\ Jellyfin\ 1080p\ HEVC\ 10bit\ 3M.mp4 { "programs": [ ], "streams": [ { "codec_name": "hevc", "profile": "Main 10", "width": 1920, "height": 1080, "pix_fmt": "yuv420p10le", "level": 123, "refs": 1, "bit_rate": "3018401" } ] } ```
backuprepo 2025-12-23 10:36:03 +01:00
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backuprepo commented 2025-12-23 10:36:05 +01:00
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@nyanmisaka commented on GitHub (Sep 5, 2025):

Unable to reproduce. This repository does not contain changes to the ffplay.c source code.

./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height
,pix_fmt,bit_rate,refs -of json ./Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4
{
    "programs": [

    ],
    "stream_groups": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "profile": "Main",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "yuv420p",
            "level": 123,
            "refs": 1,
            "bit_rate": "3019301"
        }
    ]
}
@nyanmisaka commented on GitHub (Sep 5, 2025): Unable to reproduce. This repository does not contain changes to the ffplay.c source code. ``` ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height ,pix_fmt,bit_rate,refs -of json ./Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4 { "programs": [ ], "stream_groups": [ ], "streams": [ { "codec_name": "hevc", "profile": "Main", "width": 1920, "height": 1080, "pix_fmt": "yuv420p", "level": 123, "refs": 1, "bit_rate": "3019301" } ] } ```
backuprepo commented 2025-12-23 10:36:05 +01:00
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@cnjswwxbtcc commented on GitHub (Sep 9, 2025):

Unable to reproduce. This repository does not contain changes to the ffplay.c source code.

./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height
,pix_fmt,bit_rate,refs -of json ./Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4
{
    "programs": [

    ],
    "stream_groups": [

    ],
    "streams": [
        {
            "codec_name": "hevc",
            "profile": "Main",
            "width": 1920,
            "height": 1080,
            "pix_fmt": "yuv420p",
            "level": 123,
            "refs": 1,
            "bit_rate": "3019301"
        }
    ]
}

刚有时间定位这个, 和我的编译估计有很大关系, gdb调用栈如下:

(gdb) info locals
codec = 0x7f802a0480 <ff_hevc_rkmpp_decoder>
codec = <optimized out>
probe_codec = <optimized out>
iter = <optimized out>
(gdb) bt
#0  find_probe_decoder (codec_id=<optimized out>, st=0x3f311830, s=0x3f310f70)
    at libavformat/demux.c:83
#1  avformat_find_stream_info (ic=0x3f310f70, options=0x0) at libavformat/demux.c:2505

find_probe_decoder匹配到了ff_hevc_rkmpp_decoder, 这是我编译裁剪过后生成的codec_list, 里面没有hevc的decoder

static const FFCodec * const codec_list[] = {
    &ff_rawvideo_encoder,
    &ff_wrapped_avframe_encoder,
    &ff_pcm_s16le_encoder,
    &ff_pcm_s24le_encoder,
    &ff_pcm_s32le_encoder,
    &ff_h264_rkmpp_encoder,
    &ff_hevc_rkmpp_encoder,
    &ff_mjpeg_rkmpp_encoder,
    &ff_vnull_encoder,
    &ff_anull_encoder,
    &ff_h263_rkmpp_decoder,
    &ff_h264_rkmpp_decoder,
    &ff_hevc_rkmpp_decoder,
    &ff_mpeg4_rkmpp_decoder,
    &ff_mpeg1_rkmpp_decoder,
    &ff_mpeg2_rkmpp_decoder,
    &ff_vp8_rkmpp_decoder,
    &ff_vp9_rkmpp_decoder,
    &ff_wrapped_avframe_decoder,
    &ff_aac_decoder,
    &ff_ac3_decoder,
    &ff_flac_decoder,
    &ff_mp1_decoder,
    &ff_mp1float_decoder,
    &ff_mp2_decoder,
    &ff_mp2float_decoder,
    &ff_mp3float_decoder,
    &ff_mp3_decoder,
    &ff_mp3adufloat_decoder,
    &ff_mp3adu_decoder,
    &ff_mp3on4float_decoder,
    &ff_mp3on4_decoder,
    &ff_opus_decoder,
    &ff_vorbis_decoder,
    &ff_wmav1_decoder,
    &ff_wmav2_decoder,
    &ff_pcm_f32le_decoder,
    &ff_pcm_f64le_decoder,
    &ff_pcm_s16le_decoder,
    &ff_pcm_s32le_decoder,
    &ff_av1_rkmpp_decoder,
    &ff_vnull_decoder,
    NULL };
@cnjswwxbtcc commented on GitHub (Sep 9, 2025): > Unable to reproduce. This repository does not contain changes to the ffplay.c source code. > > ``` > ./ffprobe -v error -select_streams v:0 -show_entries stream=codec_name,profile,level,width,height > ,pix_fmt,bit_rate,refs -of json ./Test\ Jellyfin\ 1080p\ HEVC\ 8bit\ 3M.mp4 > { > "programs": [ > > ], > "stream_groups": [ > > ], > "streams": [ > { > "codec_name": "hevc", > "profile": "Main", > "width": 1920, > "height": 1080, > "pix_fmt": "yuv420p", > "level": 123, > "refs": 1, > "bit_rate": "3019301" > } > ] > } > ``` 刚有时间定位这个, 和我的编译估计有很大关系, gdb调用栈如下: ``` (gdb) info locals codec = 0x7f802a0480 <ff_hevc_rkmpp_decoder> codec = <optimized out> probe_codec = <optimized out> iter = <optimized out> (gdb) bt #0 find_probe_decoder (codec_id=<optimized out>, st=0x3f311830, s=0x3f310f70) at libavformat/demux.c:83 #1 avformat_find_stream_info (ic=0x3f310f70, options=0x0) at libavformat/demux.c:2505 ``` find_probe_decoder匹配到了`ff_hevc_rkmpp_decoder`, 这是我编译裁剪过后生成的codec_list, 里面没有hevc的decoder ```c static const FFCodec * const codec_list[] = { &ff_rawvideo_encoder, &ff_wrapped_avframe_encoder, &ff_pcm_s16le_encoder, &ff_pcm_s24le_encoder, &ff_pcm_s32le_encoder, &ff_h264_rkmpp_encoder, &ff_hevc_rkmpp_encoder, &ff_mjpeg_rkmpp_encoder, &ff_vnull_encoder, &ff_anull_encoder, &ff_h263_rkmpp_decoder, &ff_h264_rkmpp_decoder, &ff_hevc_rkmpp_decoder, &ff_mpeg4_rkmpp_decoder, &ff_mpeg1_rkmpp_decoder, &ff_mpeg2_rkmpp_decoder, &ff_vp8_rkmpp_decoder, &ff_vp9_rkmpp_decoder, &ff_wrapped_avframe_decoder, &ff_aac_decoder, &ff_ac3_decoder, &ff_flac_decoder, &ff_mp1_decoder, &ff_mp1float_decoder, &ff_mp2_decoder, &ff_mp2float_decoder, &ff_mp3float_decoder, &ff_mp3_decoder, &ff_mp3adufloat_decoder, &ff_mp3adu_decoder, &ff_mp3on4float_decoder, &ff_mp3on4_decoder, &ff_opus_decoder, &ff_vorbis_decoder, &ff_wmav1_decoder, &ff_wmav2_decoder, &ff_pcm_f32le_decoder, &ff_pcm_f64le_decoder, &ff_pcm_s16le_decoder, &ff_pcm_s32le_decoder, &ff_av1_rkmpp_decoder, &ff_vnull_decoder, NULL }; ```
backuprepo commented 2025-12-23 10:36:06 +01:00
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@nyanmisaka commented on GitHub (Sep 9, 2025):

ffprobe relies on software decoders. If you disable the software hevc decoder, ffprobe will not be able to detect video attributes correctly.

@nyanmisaka commented on GitHub (Sep 9, 2025): ffprobe relies on software decoders. If you disable the software hevc decoder, ffprobe will not be able to detect video attributes correctly.
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