[FFmpeg-user] FFmpeg fails to detect input stream codec

[Liran Bachar]

I need automatic detection to work. Our product can get any file at the input, I cannot assume the input file is hevc.

-----Original Message-----
From: ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> On Behalf Of Paul B Mahol
Sent: Tuesday, November 27, 2018 02:15 PM
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Subject: Re: [FFmpeg-user] FFmpeg fails to detect input stream codec

On 11/27/18, Liran Bachar <Liran.Bachar at briefcam.com> wrote:
> Hi.
> I have a sample file uploaded to:
> https://briefcamltd-my.sharepoint.com/:v:/g/personal/liran_bachar_brie
> fcam_com/EfkUUWEHoa5Cnwf_xxtp2iMBEiKs_TThbTYBBwPYjiAqgA?e=fkrXu4
>
> Command:
> ffmpeg -i
> "XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi<file://bcfs/Rndnew/Support/Tickets/871/Video2/XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi>"
> -f null -
> Output:
> ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
>   built with Microsoft (R) C/C++ Optimizing Compiler Version 
> 19.00.24213.1 for x64
>   configuration: --enable-asm --enable-yasm --enable-nvdec 
> --disable-doc --enable-shared --disable-static --disable-bzlib 
> --disable-libopenjpeg --disable-iconv --disable-zlib --disable-dxva2 
> --disable-d3d11va --enable-decoder=tscc --toolchain=msvc --arch=x86_64 
> --extra-cflags=-MD --extra-ldflags='/NODEFAULTLIB:libcmt' 
> --enable-cuda --enable-cuvid --enable-nvenc --enable-libopenh264 
> --extra-cflags=-I/d/Sources/ExternalLibs/CudaToolkit_9_0/include
> --prefix=/d/Sources/5.3.0/ExternalLibs/ffmpeg_4_0_BC
>   libavutil      56. 14.100 / 56. 14.100
>   libavcodec     58. 18.100 / 58. 18.100
>   libavformat    58. 12.100 / 58. 12.100
>   libavdevice    58.  3.100 / 58.  3.100
>   libavfilter     7. 16.100 /  7. 16.100
>   libswscale      5.  1.100 /  5.  1.100
>   libswresample   3.  1.100 /  3.  1.100
> [avi @ 000002B70EC09A00] non-interleaved AVI [avi @ 000002B70EC09A00] 
> Could not find codec parameters for stream 0
> (Video: none (HEVC / 0x43564548), none, 2592x1520, 2021 kb/s): unknown 
> codec Consider increasing the value for the 'analyzeduration' and 'probesize'
> options
> Input #0, avi, from
> '\\bcfs\Rndnew\Support\Tickets\871\Video2\XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi':
>   Duration: 00:01:38.42, start: 0.000000, bitrate: 2033 kb/s
>     Stream #0:0: Video: none (HEVC / 0x43564548), none, 2592x1520, 
> 2021 kb/s, 60 fps, 60 tbr, 60 tbn, 60 tbc Stream mapping:
>   Stream #0:0 -> #0:0 (? (?) -> wrapped_avframe (native)) Decoder 
> (codec none) not found for input stream #0:0
>
>
> When I force the decoder to hevc, decoding succeeds:
> ffmpeg -c:v hevc -i
> "XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi<file://bcfs/Rndnew/Support/Tickets/871/Video2/XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi>"
> -f null -
> Output:
> ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
>   built with Microsoft (R) C/C++ Optimizing Compiler Version 
> 19.00.24213.1 for x64
>   configuration: --enable-asm --enable-yasm --enable-nvdec 
> --disable-doc --enable-shared --disable-static --disable-bzlib 
> --disable-libopenjpeg --disable-iconv --disable-zlib --disable-dxva2 
> --disable-d3d11va --enable-decoder=tscc --toolchain=msvc --arch=x86_64 
> --extra-cflags=-MD --extra-ldflags='/NODEFAULTLIB:libcmt' 
> --enable-cuda --enable-cuvid --enable-nvenc --enable-libopenh264 
> --extra-cflags=-I/d/Sources/ExternalLibs/CudaToolkit_9_0/include
> --prefix=/d/Sources/5.3.0/ExternalLibs/ffmpeg_4_0_BC
>   libavutil      56. 14.100 / 56. 14.100
>   libavcodec     58. 18.100 / 58. 18.100
>   libavformat    58. 12.100 / 58. 12.100
>   libavdevice    58.  3.100 / 58.  3.100
>   libavfilter     7. 16.100 /  7. 16.100
>   libswscale      5.  1.100 /  5.  1.100
>   libswresample   3.  1.100 /  3.  1.100
> [avi @ 000001E436577640] non-interleaved AVI Input #0, avi, from
> '\\bcfs\Rndnew\Support\Tickets\871\Video2\XRN-3010_10.0.21.62_80-Cam10_20181015_100000_20181015_120000_ID_0000_0020.avi':
>   Duration: 00:01:38.42, start: 0.000000, bitrate: 2033 kb/s
>     Stream #0:0: Video: hevc (Main) (HEVC / 0x43564548), yuv420p(tv), 
> 2592x1520, 2021 kb/s, 60 fps, 60 tbr, 60 tbn, 60 tbc Stream mapping:
>   Stream #0:0 -> #0:0 (hevc (native) -> wrapped_avframe (native)) 
> Press [q] to stop, [?] for help Output #0, null, to 'pipe:':
>   Metadata:
>     encoder         : Lavf58.12.100
>     Stream #0:0: Video: wrapped_avframe, yuv420p, 2592x1520, q=2-31, 
> 200 kb/s, 60 fps, 60 tbn, 60 tbc
>     Metadata:
>       encoder         : Lavc58.18.100 wrapped_avframe
> [hevc @ 000001E43883A600] Could not find ref with POC 10 [hevc @ 
> 000001E43883AA80] Could not find ref with POC 13 [hevc @ 
> 000001E43657CE40] Could not find ref with POC 11rate=N/A speed=0.0943x 
> [hevc @ 000001E43657D2C0] Could not find ref with POC 14 frame=  338 
> fps=102 q=-0.0 size=N/A time=00:00:16.98 bitrate=N/A speed=5.15x
>
>
> Why automatic codec detection fails? What can I do to fix this?

Use: ffmpeg -c:v hevc -i input_file ...
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