On 14/07/2016 19:55, Carl Eugen Hoyos wrote:
Please try to concatenate the files from your original
"perfect" try and feed the result into above FFmpeg
command ("-" instead of "tcp://...").
Does that work?
I concatenated the files into one big file then "piped" it in. It works
perfectly too.
$ cat test.all | ffmpeg -f image2pipe -vcodec rawvideo -pixel_format
gray -frame_size 5038848 -video_size 2592x1944 -framerate 10 -i -
-vcodec libx264 -x264opts sliced-threads -pix_fmt yuv420p -preset
ultrafast -tune zerolatency -vsync cfr -g 10 -f mp4 test.mp4
ffmpeg version 2.7.6-0ubuntu0.15.10.1 Copyright (c) 2000-2016 the FFmpeg
developers
built with gcc 5.2.1 (Ubuntu 5.2.1-22ubuntu2) 20151010
configuration: --prefix=/usr --extra-version=0ubuntu0.15.10.1
--build-suffix=-ffmpeg --toolchain=hardened
--libdir=/usr/lib/x86_64-linux-gnu
--incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared
--disable-stripping --enable-avresample --enable-avisynth
--enable-frei0r --enable-gnutls --enable-ladspa --enable-libass
--enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio
--enable-libflite --enable-libfontconfig --enable-libfreetype
--enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug
--enable-libmp3lame --enable-libopenjpeg --enable-openal
--enable-libopus --enable-libpulse --enable-librtmp
--enable-libschroedinger --enable-libshine --enable-libspeex
--enable-libtheora --enable-libtwolame --enable-libvorbis
--enable-libvpx --enable-libwavpack --enable-libwebp --enable-libxvid
--enable-libzvbi --enable-opengl --enable-x11grab --enable-libdc1394
--enable-libiec61883 --enable-libzmq --enable-libssh --enable-libsoxr
--enable-libx264 --enable-libopencv --enable-libx265
libavutil 54. 27.100 / 54. 27.100
libavcodec 56. 41.100 / 56. 41.100
libavformat 56. 36.100 / 56. 36.100
libavdevice 56. 4.100 / 56. 4.100
libavfilter 5. 16.101 / 5. 16.101
libavresample 2. 1. 0 / 2. 1. 0
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 2.100 / 1. 2.100
libpostproc 53. 3.100 / 53. 3.100
[image2pipe @ 0x1bcfb20] Stream #0: not enough frames to estimate rate;
consider increasing probesize
Input #0, image2pipe, from 'pipe:':
Duration: N/A, bitrate: N/A
Stream #0:0: Video: rawvideo (Y800 / 0x30303859), gray, 2592x1944,
10 tbr, 10 tbn, 10 tbc
[libx264 @ 0x1bdac40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
AVX FMA3 AVX2 LZCNT BMI2
[libx264 @ 0x1bdac40] profile Constrained Baseline, level 5.0
[libx264 @ 0x1bdac40] 264 - core 146 r2555 0c21480 - H.264/MPEG-4 AVC
codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html -
options: cabac=0 ref=1 deblock=0:0:0 analyse=0:0 me=dia subme=0 psy=1
psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0
cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=4
lookahead_threads=4 sliced_threads=1 slices=4 nr=0 decimate=1
interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=0
keyint=10 keyint_min=1 scenecut=0 intra_refresh=0 rc=crf mbtree=0
crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=0
Output #0, mp4, to 'test.mp4':
Metadata:
encoder : Lavf56.36.100
Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021),
yuv420p, 2592x1944, q=-1--1, 10 fps, 10240 tbn, 10 tbc
Metadata:
encoder : Lavc56.41.100 libx264
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
frame= 164 fps= 28 q=19.0 Lsize= 34980kB time=00:00:16.40
bitrate=17473.0kbits/s
video:34978kB audio:0kB subtitle:0kB other streams:0kB global
headers:0kB muxing overhead: 0.007298%
[libx264 @ 0x1bdac40] frame I:17 Avg QP:16.24 size:505553
[libx264 @ 0x1bdac40] frame P:147 Avg QP:19.16 size:185183
[libx264 @ 0x1bdac40] mb I I16..4: 100.0% 0.0% 0.0%
[libx264 @ 0x1bdac40] mb P I16..4: 12.9% 0.0% 0.0% P16..4: 42.9%
0.0% 0.0% 0.0% 0.0% skip:44.2%
[libx264 @ 0x1bdac40] coded y,uvDC,uvAC intra: 73.5% 0.0% 0.0% inter:
30.6% 0.0% 0.0%
[libx264 @ 0x1bdac40] i16 v,h,dc,p: 25% 24% 26% 26%
[libx264 @ 0x1bdac40] i8c dc,h,v,p: 100% 0% 0% 0%
[libx264 @ 0x1bdac40] kb/s:17471.40
I am assuming that those files were of constant size
5038848 bytes, are they?
Yes they are. The concatenated file contains 164 frames and is exactly
164 x 5,038,848 = 826,371,072 bytes
In addition to this I tried something else. I changed the server
software to only start transmitting packets after FFmpeg has connected.
This ensures that FFmpeg sees the stream from the very first byte. On
top of this its a TCP connection so nothing should get lost. But
unfortunately the result is the same.
ffmpeg version 2.7.6-0ubuntu0.15.10.1
Please understand that generally, only current FFmpeg
git head is supported here.
Sorry, I'm using the version of FFmpeg in the Ubuntu 15.10 repositories.
Does it make a difference on this issue?
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