FFMPEG x264 MP4 Kodierung alles grau
Ich verwende derzeit FFMPEG v1.1 unter CentOS 6.3.
Ich habe FFMPEG konfiguriert mit:
./configure --arch=x86_64 --enable-libmp3lame --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libx264 --enable-pthreads --enable-gpl --enable-runtime-cpudetect
Wenn ich einen einfachen Befehl zum Aufzeichnen von Live-Eingaben in MP4 ausführe:
ffmpeg -f video4linux2 -s 640x480 -i /dev/video0 /home/irdb/Desktop/test.mp4
Ich bekomme nichts, nur einen grauen Bildschirm mit einigen Artefakten an den Rändern. Wenn ich jedoch den gleichen Befehl wie .MPG ausführe, funktioniert das einwandfrei. Ich brauche es jedoch im MP4-Format.
Nebenbei bemerkt, ich lasse x264-0.120 laufen, das durch yum installiert wird
Meine Frage ist, gibt es ein Problem mit der Art und Weise, wie ich ffmpeg kompiliert habe? Oder ist es möglicherweise etwas anderes?
bearbeiten:
Ausgabe aus Beispiel wie gewünscht:
# ffmpeg -f video4linux2 -s 640x480 -t 5 -i /dev/video0 -strict 2 /home/irdb/Desktop/test.mp4
ffmpeg version N-50546-g1f5b5b8 Copyright (c) 2000-2013 the FFmpeg developers
built on Mar 7 2013 00:17:44 with gcc 4.4.6 (GCC) 20120305 (Red Hat 4.4.6-4)
configuration: --enable-libmp3lame --enable-librtmp --enable-libtheora --enable- libvorbis --enable-libx264 --enable-pthreads --enable-gpl --enable-runtime-cpudetect
libavutil 52. 18.100 / 52. 18.100
libavcodec 54. 92.100 / 54. 92.100
libavformat 54. 63.104 / 54. 63.104
libavdevice 54. 3.103 / 54. 3.103
libavfilter 3. 42.103 / 3. 42.103
libswscale 2. 2.100 / 2. 2.100
libswresample 0. 17.102 / 0. 17.102
libpostproc 52. 2.100 / 52. 2.100
[video4linux2,v4l2 @ 0x3025120] Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 128.640356, bitrate: 147456 kb/s
Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
[libx264 @ 0x3026f80] using cpu capabilities: MMX2 SSE2Fast SSEMisalign LZCNT
[libx264 @ 0x3026f80] profile High 4:2:2, level 3.0, 4:2:2 8-bit
[libx264 @ 0x3026f80] 264 - core 130 r2274 c832fe9 - H.264/MPEG-4 AVC codec - Copyleft 2003-2013 - 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=6 lookahead_threads=1 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 '/home/irdb/Desktop/test.mp4':
Metadata:
encoder : Lavf54.63.104
Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv422p, 640x480, q=-1--1, 15360 tbn, 30 tbc
Stream mapping:
Stream #0:0 -> #0:0 (rawvideo -> libx264)
Press [q] to stop, [?] for help
frame= 32 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=21 drframe= 46 fps= 46 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A dup=28 drframe= 62 fps= 41 q=29.0 size= 71kB time=00:00:00.33 bitrate=1735.2kbits/frame= 76 fps= 38 q=29.0 size= 169kB time=00:00:00.80 bitrate=1731.2kbits/frame= 93 fps= 37 q=29.0 size= 311kB time=00:00:01.36 bitrate=1862.3kbits/frame= 107 fps= 35 q=29.0 size= 423kB time=00:00:01.83 bitrate=1891.0kbits/frame= 123 fps= 35 q=29.0 size= 537kB time=00:00:02.36 bitrate=1860.2kbits/frame= 139 fps= 34 q=29.0 size= 664kB time=00:00:02.90 bitrate=1876.0kbits/frame= 150 fps= 29 q=-1.0 Lsize= 1174kB time=00:00:04.93 bitrate=1948.7kbits/s dup=81 drop=0
video:1172kB audio:0kB subtitle:0 global headers:0kB muxing overhead 0.133409%
[libx264 @ 0x3026f80] frame I:2 Avg QP:23.22 size: 28460
[libx264 @ 0x3026f80] frame P:136 Avg QP:24.45 size: 8397
[libx264 @ 0x3026f80] frame B:12 Avg QP:26.18 size: 42
[libx264 @ 0x3026f80] consecutive B-frames: 88.0% 4.0% 0.0% 8.0%
[libx264 @ 0x3026f80] mb I I16..4: 47.1% 28.8% 24.1%
[libx264 @ 0x3026f80] mb P I16..4: 4.3% 1.9% 1.2% P16..4: 29.0% 11.4% 9.2% 0.0% 0.0% skip:43.0%
[libx264 @ 0x3026f80] mb B I16..4: 0.0% 0.0% 0.0% B16..8: 1.5% 0.0% 0.0% direct: 0.0% skip:98.5% L0:16.5% L1:83.5% BI: 0.0%
[libx264 @ 0x3026f80] 8x8 transform intra:26.4% inter:30.7%
[libx264 @ 0x3026f80] coded y,uvDC,uvAC intra: 85.2% 95.6% 83.5% inter: 10.9% 38.6% 24.0%
[libx264 @ 0x3026f80] i16 v,h,dc,p: 33% 19% 40% 8%
[libx264 @ 0x3026f80] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 6% 12% 55% 5% 3% 4% 4% 3% 8%
[libx264 @ 0x3026f80] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 15% 9% 63% 3% 2% 2% 2% 2% 2%
[libx264 @ 0x3026f80] i8c dc,h,v,p: 66% 11% 14% 9%
[libx264 @ 0x3026f80] Weighted P-Frames: Y:0.0% UV:0.0%
[libx264 @ 0x3026f80] ref P L0: 56.6% 7.5% 8.1% 27.8%
[libx264 @ 0x3026f80] ref B L0: 83.3% 16.7%
[libx264 @ 0x3026f80] ref B L1: 90.7% 9.3%
[libx264 @ 0x3026f80] kb/s:1918.95