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

[Micael Silva]

On Tue, Nov 27, 2018 at 10:35 AM Liran Bachar <Liran.Bachar at briefcam.com>
wrote:

> 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 ...
>
>
Increasing -probesize maybe?