> On 17. Apr 2018, at 12:43, Gyan Doshi <gyando...@gmail.com> wrote: > > On 4/17/2018 4:07 PM, Daniel Oberhoff wrote: > >> We run a service that extensively relies on hls streams recorded from rtsp >> capable cameras. We rotuinely generate clips from recorded streams and seem >> to run into weird behavior of -ss and -t. also it seems the hls stream >> always has a start-time of 1.4s. This is not the core problem though. when >> we generate short clips deep in to the stream i.e. -t 1000 -s 10 it often >> happens we get no output at all. >> any ideas? > > Please share full uncut command and console output for such a case.
sure. so for this i have an hls sequence:
$ ffprobe ./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8
ffprobe version 3.3.6 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 7 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg
--docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall
-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic'
--extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '
--extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3
--enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r
--enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265
--enable-libxvid --enable-avfilter --enable-avresample --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --shlibdir=/usr/lib64 --enable-libmfx
--enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[hls,applehttp @ 0x55f79271dee0] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0000000.ts'
for reading
Input #0, hls,applehttp, from
'./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8':
Duration: 01:16:57.68, start: 1.400000, bitrate: 0 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc,
bt709), 2304x2800, 25 fps, 25 tbr, 90k tbn, 180k tbc
Metadata:
variant_bitrate : 0
and the further back i start clipping the more is missing:
$ ffmpeg -ss 1000 -i ./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8 -t
1 daniel-dev/test.mp4
ffmpeg version 3.3.6 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg
--docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall
-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic'
--extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '
--extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3
--enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r
--enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265
--enable-libxvid --enable-avfilter --enable-avresample --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --shlibdir=/usr/lib64 --enable-libmfx
--enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[hls,applehttp @ 0x558cf738e720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0000000.ts'
for reading
Input #0, hls,applehttp, from
'./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8':
Duration: 01:16:57.68, start: 1.400000, bitrate: 0 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc,
bt709), 2304x2800, 25 fps, 25 tbr, 90k tbn, 180k tbc
Metadata:
variant_bitrate : 0
File 'daniel-dev/test.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[hls,applehttp @ 0x558cf738e720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0000999.ts'
for reading
[hls,applehttp @ 0x558cf738e720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0001000.ts'
for reading
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x558cf753fa00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x558cf753fa00] profile High, level 5.1
[libx264 @ 0x558cf753fa00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=87 lookahead_threads=14
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1
open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0
rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'daniel-dev/test.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc),
2304x2800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
variant_bitrate : 0
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 3 fps=1.9 q=-1.0 Lsize= 550kB time=00:00:00.88
bitrate=5122.4kbits/s speed=0.567x
video:549kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 0.157296%
[libx264 @ 0x558cf753fa00] frame I:1 Avg QP:25.05 size:545730
[libx264 @ 0x558cf753fa00] frame P:1 Avg QP:27.45 size: 8894
[libx264 @ 0x558cf753fa00] frame B:1 Avg QP:27.27 size: 7319
[libx264 @ 0x558cf753fa00] consecutive B-frames: 33.3% 66.7% 0.0% 0.0%
[libx264 @ 0x558cf753fa00] mb I I16..4: 2.7% 64.6% 32.7%
[libx264 @ 0x558cf753fa00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 10.1% 0.3%
0.1% 0.0% 0.0% skip:89.5%
[libx264 @ 0x558cf753fa00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 20.6% 0.1%
0.0% direct: 0.1% skip:79.2% L0:17.5% L1:82.3% BI: 0.2%
[libx264 @ 0x558cf753fa00] 8x8 transform intra:64.6% inter:68.7%
[libx264 @ 0x558cf753fa00] coded y,uvDC,uvAC intra: 80.3% 34.8% 11.9% inter:
2.0% 0.1% 0.0%
[libx264 @ 0x558cf753fa00] i16 v,h,dc,p: 10% 13% 35% 42%
[libx264 @ 0x558cf753fa00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 12% 18% 6% 8%
7% 8% 6% 6%
[libx264 @ 0x558cf753fa00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 14% 16% 11% 13%
7% 9% 7% 6%
[libx264 @ 0x558cf753fa00] i8c dc,h,v,p: 59% 20% 15% 6%
[libx264 @ 0x558cf753fa00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x558cf753fa00] kb/s:37462.87
]$ ffprobe daniel-dev/test.mp4
ffprobe version 3.3.6 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 7 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg
--docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall
-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic'
--extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '
--extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3
--enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r
--enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265
--enable-libxvid --enable-avfilter --enable-avresample --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --shlibdir=/usr/lib64 --enable-libmfx
--enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'daniel-dev/test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:00:00.12, start: 0.880000, bitrate: 37567 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc),
2304x2800, 37509 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
$ ffmpeg -ss 1000 -i ./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8 -t
1 daniel-dev/test.mp4
ffmpeg version 3.3.6 Copyright (c) 2000-2017 the FFmpeg developers
built with gcc 7 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg
--docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall
-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic'
--extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '
--extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3
--enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r
--enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265
--enable-libxvid --enable-avfilter --enable-avresample --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --shlibdir=/usr/lib64 --enable-libmfx
--enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
[hls,applehttp @ 0x5634d8e97720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0000000.ts'
for reading
Input #0, hls,applehttp, from
'./e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_hls.m3u8':
Duration: 01:16:57.68, start: 1.400000, bitrate: 0 kb/s
Program 0
Metadata:
variant_bitrate : 0
Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuvj420p(pc,
bt709), 2304x2800, 25 fps, 25 tbr, 90k tbn, 180k tbc
Metadata:
variant_bitrate : 0
File 'daniel-dev/test.mp4' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
Press [q] to stop, [?] for help
[hls,applehttp @ 0x5634d8e97720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0000999.ts'
for reading
[hls,applehttp @ 0x5634d8e97720] Opening
'/data/e24f6b2e-36ad-4ac0-9670-879bb34ea828/cam5_2_segments/segment0001000.ts'
for reading
No pixel format specified, yuvj420p for H.264 encoding chosen.
Use -pix_fmt yuv420p for compatibility with outdated media players.
[libx264 @ 0x5634d9048a00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x5634d9048a00] profile High, level 5.1
[libx264 @ 0x5634d9048a00] 264 - core 148 r2795 aaa9aa8 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2017 - http://www.videolan.org/x264.html - options:
cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1
psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0
deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=87 lookahead_threads=14
sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0
constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1
open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0
rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4
ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to 'daniel-dev/test.mp4':
Metadata:
encoder : Lavf57.71.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuvj420p(pc),
2304x2800, q=-1--1, 25 fps, 12800 tbn, 25 tbc
Metadata:
variant_bitrate : 0
encoder : Lavc57.89.100 libx264
Side data:
cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: -1
frame= 3 fps=2.0 q=-1.0 Lsize= 550kB time=00:00:00.88
bitrate=5122.4kbits/s speed=0.584x
video:549kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
overhead: 0.157296%
[libx264 @ 0x5634d9048a00] frame I:1 Avg QP:25.05 size:545730
[libx264 @ 0x5634d9048a00] frame P:1 Avg QP:27.45 size: 8894
[libx264 @ 0x5634d9048a00] frame B:1 Avg QP:27.27 size: 7319
[libx264 @ 0x5634d9048a00] consecutive B-frames: 33.3% 66.7% 0.0% 0.0%
[libx264 @ 0x5634d9048a00] mb I I16..4: 2.7% 64.6% 32.7%
[libx264 @ 0x5634d9048a00] mb P I16..4: 0.0% 0.0% 0.0% P16..4: 10.1% 0.3%
0.1% 0.0% 0.0% skip:89.5%
[libx264 @ 0x5634d9048a00] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 20.6% 0.1%
0.0% direct: 0.1% skip:79.2% L0:17.5% L1:82.3% BI: 0.2%
[libx264 @ 0x5634d9048a00] 8x8 transform intra:64.6% inter:68.7%
[libx264 @ 0x5634d9048a00] coded y,uvDC,uvAC intra: 80.3% 34.8% 11.9% inter:
2.0% 0.1% 0.0%
[libx264 @ 0x5634d9048a00] i16 v,h,dc,p: 10% 13% 35% 42%
[libx264 @ 0x5634d9048a00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 30% 12% 18% 6% 8%
7% 8% 6% 6%
[libx264 @ 0x5634d9048a00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 18% 14% 16% 11% 13%
7% 9% 7% 6%
[libx264 @ 0x5634d9048a00] i8c dc,h,v,p: 59% 20% 15% 6%
[libx264 @ 0x5634d9048a00] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x5634d9048a00] kb/s:37462.87
$ ffprobe daniel-dev/test.mp4
ffprobe version 3.3.6 Copyright (c) 2007-2017 the FFmpeg developers
built with gcc 7 (GCC)
configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg
--docdir=/usr/share/doc/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64
--mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall
-Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -m64 -mtune=generic'
--extra-ldflags='-Wl,-z,relro -specs=/usr/lib/rpm/redhat/redhat-hardened-ld '
--extra-cflags='-I/usr/include/nvenc ' --enable-libopencore-amrnb
--enable-libopencore-amrwb --enable-libvo-amrwbenc --enable-version3
--enable-bzlib --disable-crystalhd --enable-fontconfig --enable-frei0r
--enable-gcrypt --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libcdio --enable-indev=jack --enable-libfreetype
--enable-libfribidi --enable-libgsm --enable-libmp3lame --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr
--enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2
--enable-libvidstab --enable-libvpx --enable-libx264 --enable-libx265
--enable-libxvid --enable-avfilter --enable-avresample --enable-postproc
--enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug
--disable-stripping --shlibdir=/usr/lib64 --enable-libmfx
--enable-runtime-cpudetect
libavutil 55. 58.100 / 55. 58.100
libavcodec 57. 89.100 / 57. 89.100
libavformat 57. 71.100 / 57. 71.100
libavdevice 57. 6.100 / 57. 6.100
libavfilter 6. 82.100 / 6. 82.100
libavresample 3. 5. 0 / 3. 5. 0
libswscale 4. 6.100 / 4. 6.100
libswresample 2. 7.100 / 2. 7.100
libpostproc 54. 5.100 / 54. 5.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'daniel-dev/test.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.71.100
Duration: 00:00:00.12, start: 0.880000, bitrate: 37567 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc),
2304x2800, 37509 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
so in this case it is not empty yet, but at some point or with other sequences
we have empty output. also the start offset seems quite obscure...
signature.asc
Description: Message signed with OpenPGP
_______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
