Read and store the last line of the command line output of mplayer
I am writing a program to get the output of the video length played (time in seconds) in mplayer. Usually the output of mplayer is
Playing video.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
Clip info:
major_brand: dash
minor_version: 0
compatible_brands: iso6avc1mp41
creation_time: 2017-11-03 00:36:26
Load subtitles in .
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [libavcodec]
Starting playback...
VIDEO: 1920x1080 23.976 fps 1343.8 kbps (168.0 kB/s)
VO: [x11] 1920x1080 => 1920x1080 Planar YV12
[swscaler @ 0xb5cea980]No accelerated colorspace conversion found from yuv420p to bgra.
[swscaler @ 0xb5cea980]using unscaled yuv420p -> bgra special converter
Colorspace details not fully supported by selected vo.
V: 78.0 0/ 0 8% 117% 0.0% 0 0
I want the time output of the last line.
i.e.78.0
I am saving the logs in a file using this command:
mplayer video.mp4 2>timing.log | grep V:
Which will be read by the python function running in parallel to the Thread function playing the same video.
Is there any way where I can store only the timings.
As I am unable to get the timings from the log file, as it returns me null.
linux mplayer
asked Jan 15 at 10:28
ron123456ron123456
207
add a comment |
I am writing a program to get the output of the video length played (time in seconds) in mplayer. Usually the output of mplayer is
Playing video.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
Clip info:
major_brand: dash
minor_version: 0
compatible_brands: iso6avc1mp41
creation_time: 2017-11-03 00:36:26
Load subtitles in .
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [libavcodec]
Starting playback...
VIDEO: 1920x1080 23.976 fps 1343.8 kbps (168.0 kB/s)
VO: [x11] 1920x1080 => 1920x1080 Planar YV12
[swscaler @ 0xb5cea980]No accelerated colorspace conversion found from yuv420p to bgra.
[swscaler @ 0xb5cea980]using unscaled yuv420p -> bgra special converter
Colorspace details not fully supported by selected vo.
V: 78.0 0/ 0 8% 117% 0.0% 0 0
I want the time output of the last line.
i.e.78.0
I am saving the logs in a file using this command:
mplayer video.mp4 2>timing.log | grep V:
Which will be read by the python function running in parallel to the Thread function playing the same video.
Is there any way where I can store only the timings.
As I am unable to get the timings from the log file, as it returns me null.
linux mplayer
asked Jan 15 at 10:28
ron123456ron123456
207
add a comment |
I am writing a program to get the output of the video length played (time in seconds) in mplayer. Usually the output of mplayer is
Playing video.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
Clip info:
major_brand: dash
minor_version: 0
compatible_brands: iso6avc1mp41
creation_time: 2017-11-03 00:36:26
Load subtitles in .
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [libavcodec]
Starting playback...
VIDEO: 1920x1080 23.976 fps 1343.8 kbps (168.0 kB/s)
VO: [x11] 1920x1080 => 1920x1080 Planar YV12
[swscaler @ 0xb5cea980]No accelerated colorspace conversion found from yuv420p to bgra.
[swscaler @ 0xb5cea980]using unscaled yuv420p -> bgra special converter
Colorspace details not fully supported by selected vo.
V: 78.0 0/ 0 8% 117% 0.0% 0 0
I want the time output of the last line.
i.e.78.0
I am saving the logs in a file using this command:
mplayer video.mp4 2>timing.log | grep V:
Which will be read by the python function running in parallel to the Thread function playing the same video.
Is there any way where I can store only the timings.
As I am unable to get the timings from the log file, as it returns me null.
linux mplayer
asked Jan 15 at 10:28
ron123456ron123456
207
I am writing a program to get the output of the video length played (time in seconds) in mplayer. Usually the output of mplayer is
Playing video.mp4.
Detected file format: QuickTime / MOV (libavformat)
[lavf] stream 0: video (h264), -vid 0
Clip info:
major_brand: dash
minor_version: 0
compatible_brands: iso6avc1mp41
creation_time: 2017-11-03 00:36:26
Load subtitles in .
Selected video codec: H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 [libavcodec]
Starting playback...
VIDEO: 1920x1080 23.976 fps 1343.8 kbps (168.0 kB/s)
VO: [x11] 1920x1080 => 1920x1080 Planar YV12
[swscaler @ 0xb5cea980]No accelerated colorspace conversion found from yuv420p to bgra.
[swscaler @ 0xb5cea980]using unscaled yuv420p -> bgra special converter
Colorspace details not fully supported by selected vo.
V: 78.0 0/ 0 8% 117% 0.0% 0 0
I want the time output of the last line.
i.e.78.0
I am saving the logs in a file using this command:
mplayer video.mp4 2>timing.log | grep V:
Which will be read by the python function running in parallel to the Thread function playing the same video.
Is there any way where I can store only the timings.
As I am unable to get the timings from the log file, as it returns me null.
linux mplayer
linux mplayer
asked Jan 15 at 10:28
ron123456ron123456
207
asked Jan 15 at 10:28
ron123456ron123456
207
asked Jan 15 at 10:28
ron123456ron123456
207
asked Jan 15 at 10:28
ron123456ron123456
207
asked Jan 15 at 10:28
ron123456ron123456
207
207
add a comment |
add a comment |
1 Answer
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You are redirecting the stderr Output (2> timing.log) of mplayer only.
The 'V:' Values you are initerested in are in the stdout (1> timing.log).
Anyway I would use a cup of tee IMHO:
mplayer video.mp4 | tee -a timing.log;
grep 'V:' timing.log
answered Jan 15 at 11:59
stefan123tstefan123t
33
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log
– ron123456
Jan 16 at 5:31
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You are redirecting the stderr Output (2> timing.log) of mplayer only.
The 'V:' Values you are initerested in are in the stdout (1> timing.log).
Anyway I would use a cup of tee IMHO:
mplayer video.mp4 | tee -a timing.log;
grep 'V:' timing.log
answered Jan 15 at 11:59
stefan123tstefan123t
33
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log
– ron123456
Jan 16 at 5:31
add a comment |
You are redirecting the stderr Output (2> timing.log) of mplayer only.
The 'V:' Values you are initerested in are in the stdout (1> timing.log).
Anyway I would use a cup of tee IMHO:
mplayer video.mp4 | tee -a timing.log;
grep 'V:' timing.log
answered Jan 15 at 11:59
stefan123tstefan123t
33
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log
– ron123456
Jan 16 at 5:31
add a comment |
You are redirecting the stderr Output (2> timing.log) of mplayer only.
The 'V:' Values you are initerested in are in the stdout (1> timing.log).
Anyway I would use a cup of tee IMHO:
mplayer video.mp4 | tee -a timing.log;
grep 'V:' timing.log
answered Jan 15 at 11:59
stefan123tstefan123t
33
You are redirecting the stderr Output (2> timing.log) of mplayer only.
The 'V:' Values you are initerested in are in the stdout (1> timing.log).
Anyway I would use a cup of tee IMHO:
mplayer video.mp4 | tee -a timing.log;
grep 'V:' timing.log
answered Jan 15 at 11:59
stefan123tstefan123t
33
answered Jan 15 at 11:59
stefan123tstefan123t
33
answered Jan 15 at 11:59
stefan123tstefan123t
33
answered Jan 15 at 11:59
stefan123tstefan123t
33
33
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log
– ron123456
Jan 16 at 5:31
add a comment |
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log
– ron123456
Jan 16 at 5:31
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
It prints all the data other than the last line.
– ron123456
Jan 16 at 5:30
Although using 'strace' I was able to do so. But it slowed my raspberry pi.
strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log– ron123456
Jan 16 at 5:31
Although using 'strace' I was able to do so. But it slowed my raspberry pi.
strace mplayer video.mp4 2>&1 | grep V: | awk 'FNR=1 {print $3}' > timing.log– ron123456
Jan 16 at 5:31
add a comment |
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