[MPlayer-users] Excessive * audio codec cpu usage
Brian J. Murrell
6d6e15ccc0947661acfcd0434bc74f15 at interlinx.bc.ca
Wed Feb 13 07:33:03 CET 2002
OK, this is a strange scenario. I have three machines:
server: nfs server with lots of fast disk
capture: captures streams from TV card and writes them to an MPEG file
with mp1e
pvr: machine with Radeon video card and Yamaha chip based audio card
All are connected together on a 100Mbps Hub.
I run mp1e to capture streams on "capture" and write them to mpeg1
files on an exported filesystem on "server". The files are encoded
real-time at 5Mbps.
I play streams on "pvr" from the exported filesystem (that capture
writes to) using "-framedrop -vc ffmpeg12 -ao alsa5 -vo vesa:vidix
-double"
If I play a given stream (any stream but the one being captured) while
a stream is being captured here is how it plays:
A: 6.3 V: 6.4 A-V: -0.079 ct: -0.002 184/184 44% 34% 1.9% 0 0 0%
A: 6.3 V: 6.3 A-V: 0.025 ct: 0.000 185/185 44% 34% 1.9% 0 0 0%
A: 6.4 V: 6.3 A-V: 0.023 ct: 0.002 186/186 44% 34% 1.9% 0 0 0%
A: 6.4 V: 6.5 A-V: -0.097 ct: -0.001 187/187 44% 34% 1.9% 0 0 0%
A: 6.4 V: 6.4 A-V: 0.002 ct: -0.001 188/188 44% 34% 1.9% 0 0 0%
A: 6.4 V: 6.4 A-V: 0.006 ct: -0.000 189/189 44% 34% 1.9% 0 0 0%
A: 6.5 V: 6.6 A-V: -0.096 ct: -0.003 190/190 44% 34% 1.9% 0 0 0%
A: 6.5 V: 6.5 A-V: 0.025 ct: -0.001 191/191 44% 34% 1.9% 0 0 0%
A: 6.6 V: 6.5 A-V: 0.019 ct: 0.001 192/192 44% 34% 1.9% 0 0 0%
A: 6.6 V: 6.7 A-V: -0.078 ct: -0.002 193/193 43% 34% 1.9% 0 0 0%
A: 6.6 V: 6.6 A-V: 0.007 ct: -0.002 194/194 43% 34% 1.9% 0 0 0%
A: 6.6 V: 6.6 A-V: 0.001 ct: -0.002 195/195 43% 34% 1.9% 0 0 0%
A: 6.7 V: 6.8 A-V: -0.095 ct: -0.005 196/196 43% 34% 1.9% 0 0 0%
A: 6.7 V: 6.7 A-V: 0.003 ct: -0.005 197/197 43% 34% 1.9% 0 0 0%
A: 6.8 V: 6.7 A-V: 0.024 ct: -0.002 198/198 43% 34% 1.9% 0 0 0%
A: 6.8 V: 6.9 A-V: -0.077 ct: -0.005 199/199 43% 34% 1.9% 0 0 0%
A: 6.8 V: 6.8 A-V: 0.027 ct: -0.003 200/200 43% 34% 1.9% 0 0 0%
A: 6.9 V: 6.8 A-V: 0.020 ct: -0.001 201/201 43% 34% 1.9% 0 0 0%
A: 6.9 V: 7.0 A-V: -0.081 ct: -0.004 202/202 43% 34% 1.9% 0 0 0%
A: 6.9 V: 6.9 A-V: 0.040 ct: -0.001 203/203 43% 34% 1.9% 0 0 0%
A: 7.0 V: 6.9 A-V: 0.033 ct: 0.003 204/204 43% 34% 1.9% 0 0 0%
A: 7.0 V: 7.1 A-V: -0.063 ct: -0.001 205/205 43% 34% 1.9% 0 0 0%
A: 7.0 V: 7.0 A-V: 0.022 ct: 0.001 206/206 43% 34% 1.9% 0 0 0%
A: 7.1 V: 7.0 A-V: 0.015 ct: 0.003 207/207 43% 34% 1.9% 0 0 0%
A: 7.1 V: 7.2 A-V: -0.086 ct: -0.000 208/208 43% 34% 1.9% 0 0 0%
A: 7.1 V: 7.1 A-V: 0.018 ct: 0.001 209/209 43% 34% 1.9% 0 0 0%
A: 7.2 V: 7.1 A-V: 0.034 ct: 0.005 210/210 43% 34% 1.9% 0 0 0%
If I play the stream being captured, here is how it plays:
A: 3.8 V: 3.8 A-V: -0.006 ct: 0.066 110/110 48% 19% 22.3% 49 0 0%
A: 3.9 V: 3.8 A-V: 0.042 ct: 0.069 111/111 48% 19% 23.0% 50 0 0%
A: 3.9 V: 4.0 A-V: -0.071 ct: 0.066 112/112 48% 19% 22.8% 51 0 0%
A: 3.9 V: 3.9 A-V: 0.018 ct: 0.067 113/113 48% 19% 22.6% 51 0 0%
A: 4.0 V: 3.9 A-V: 0.018 ct: 0.069 114/114 48% 19% 23.0% 52 0 0%
A: 4.0 V: 4.1 A-V: -0.094 ct: 0.066 115/115 48% 18% 22.8% 53 0 0%
A: 4.0 V: 4.0 A-V: -0.006 ct: 0.065 116/116 48% 18% 22.6% 53 0 0%
A: 4.0 V: 4.0 A-V: -0.007 ct: 0.065 117/117 48% 18% 22.4% 53 0 0%
A: 4.1 V: 4.2 A-V: -0.108 ct: 0.061 118/118 48% 19% 22.2% 53 0 0%
A: 4.1 V: 4.1 A-V: 0.034 ct: 0.065 119/119 48% 19% 22.8% 54 0 0%
A: 4.2 V: 4.1 A-V: 0.022 ct: 0.067 120/120 48% 19% 22.7% 54 0 0%
A: 4.2 V: 4.3 A-V: -0.085 ct: 0.064 121/121 48% 19% 22.5% 54 0 0%
A: 4.2 V: 4.2 A-V: 0.032 ct: 0.067 122/122 48% 19% 23.2% 55 0 0%
A: 4.3 V: 4.2 A-V: 0.020 ct: 0.069 123/123 48% 19% 23.1% 56 0 0%
A: 4.3 V: 4.4 A-V: -0.097 ct: 0.065 124/124 48% 18% 22.9% 57 0 0%
A: 4.3 V: 4.3 A-V: -0.009 ct: 0.065 125/125 48% 18% 22.7% 57 0 0%
A: 4.4 V: 4.3 A-V: 0.028 ct: 0.067 126/126 48% 18% 23.0% 58 0 0%
A: 4.4 V: 4.5 A-V: -0.090 ct: 0.064 127/127 48% 18% 22.8% 58 0 0%
A: 4.4 V: 4.4 A-V: 0.014 ct: 0.065 128/128 48% 18% 22.6% 58 0 0%
A: 4.4 V: 4.4 A-V: 0.008 ct: 0.066 129/129 48% 19% 22.5% 58 0 0%
A: 4.5 V: 4.6 A-V: -0.094 ct: 0.063 130/130 48% 19% 22.3% 58 0 0%
A: 4.6 V: 4.5 A-V: 0.054 ct: 0.066 131/131 48% 19% 22.8% 59 0 0%
A: 4.6 V: 4.5 A-V: 0.037 ct: 0.069 132/132 48% 19% 22.7% 60 0 0%
A: 4.6 V: 4.7 A-V: -0.081 ct: 0.066 133/133 48% 18% 22.5% 60 0 0%
A: 4.6 V: 4.6 A-V: 0.020 ct: 0.068 134/134 48% 19% 22.8% 61 0 0%
A: 4.6 V: 4.6 A-V: 0.008 ct: 0.069 135/135 48% 18% 22.6% 61 0 0%
A: 4.7 V: 4.8 A-V: -0.099 ct: 0.066 136/136 48% 19% 22.4% 61 0 0%
A: 4.7 V: 4.7 A-V: 0.000 ct: 0.066 137/137 48% 19% 22.3% 61 0 0%
A: 4.8 V: 4.7 A-V: 0.053 ct: 0.069 138/138 48% 19% 23.0% 62 0 0%
A: 4.8 V: 4.9 A-V: -0.059 ct: 0.066 139/139 48% 19% 22.8% 63 0 0%
A: 4.8 V: 4.8 A-V: 0.029 ct: 0.069 140/140 48% 18% 22.6% 63 0 0%
A: 4.9 V: 4.8 A-V: 0.046 ct: 0.072 141/141 48% 19% 23.3% 64 0 0%
A: 4.9 V: 5.0 A-V: -0.072 ct: 0.069 142/142 48% 18% 23.1% 65 0 0%
A: 4.9 V: 4.9 A-V: 0.022 ct: 0.071 143/143 48% 18% 23.0% 66 0 0%
A: 4.9 V: 4.9 A-V: 0.004 ct: 0.071 144/144 48% 18% 22.8% 66 0 0%
A: 5.0 V: 5.1 A-V: -0.102 ct: 0.068 145/145 48% 18% 22.7% 66 0 0%
A: 5.0 V: 5.0 A-V: 0.031 ct: 0.071 146/146 48% 18% 22.8% 66 0 0%
A: 5.1 V: 5.0 A-V: 0.030 ct: 0.074 147/147 48% 18% 22.7% 67 0 0%
A: 5.1 V: 5.2 A-V: -0.082 ct: 0.071 148/148 48% 18% 22.5% 67 0 0%
A: 5.1 V: 5.1 A-V: 0.040 ct: 0.074 149/149 48% 18% 23.2% 68 0 0%
A: 5.2 V: 5.1 A-V: 0.023 ct: 0.076 150/150 48% 18% 23.1% 69 0 0%
A: 5.2 V: 5.3 A-V: -0.089 ct: 0.073 151/151 48% 18% 22.9% 70 0 0%
A: 5.2 V: 5.2 A-V: -0.001 ct: 0.073 152/152 48% 18% 22.8% 70 0 0%
A: 5.3 V: 5.2 A-V: 0.024 ct: 0.075 153/153 48% 19% 22.6% 71 0 0%
A: 5.3 V: 5.4 A-V: -0.039 ct: 0.072 154/154 48% 19% 23.1% 72 0 0%
A: 5.4 V: 5.3 A-V: 0.049 ct: 0.075 155/155 48% 19% 23.0% 73 0 0%
A: 5.4 V: 5.3 A-V: 0.034 ct: 0.079 156/156 48% 18% 23.3% 74 0 0%
A: 5.4 V: 5.5 A-V: -0.084 ct: 0.075 157/157 48% 18% 23.1% 75 0 0%
A: 5.4 V: 5.4 A-V: 0.005 ct: 0.076 158/158 48% 18% 23.0% 76 0 0%
A: 5.4 V: 5.4 A-V: -0.007 ct: 0.075 159/159 48% 18% 22.9% 76 0 0%
A: 5.5 V: 5.6 A-V: -0.109 ct: 0.072 160/160 48% 18% 22.7% 76 0 0%
A: 5.5 V: 5.5 A-V: 0.033 ct: 0.075 161/161 48% 18% 23.1% 77 0 0%
Why is the cpu usage for audio codec so much higher when playing a
stream as it is being recorded (recording is happening on a different
box recall)?
b.
--
Brian J. Murrell
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