Rodolfo Medina <rodolfo.med...@gmail.com> writes:
> Leonardo via ffmpeg-user <ffmpeg-user@ffmpeg.org> writes:
>
>> Since you have an AMD cpu/apu, one last resort that I can think of is to
>> capture webcam with hardware acceleration.
>>
>>
>
>
> Nothing, the problem remains... it gets stuck for some seconds...
The problem also occurs with another computer of mine, Intel, old:
$ cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 28
model name : Intel(R) Atom(TM) CPU N270 @ 1.60GHz
stepping : 2
microcode : 0x212
cpu MHz : 1210.046
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3
xtpr pdcm movbe lahf_lm dtherm
bugs :
bogomips : 3192.03
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
processor : 1
vendor_id : GenuineIntel
cpu family : 6
model : 28
model name : Intel(R) Atom(TM) CPU N270 @ 1.60GHz
stepping : 2
microcode : 0x212
cpu MHz : 1159.421
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 1
apicid : 1
initial apicid : 1
fdiv_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 10
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc
arch_perfmon pebs bts cpuid aperfmperf pni dtes64 monitor ds_cpl est tm2 ssse3
xtpr pdcm movbe lahf_lm dtherm
bugs :
bogomips : 3192.03
clflush size : 64
cache_alignment : 64
address sizes : 32 bits physical, 32 bits virtual
power management:
$ ffmpeg -f alsa -i hw:0,0 -f video4linux2 -s 640x480 -i /dev/video0 out.mpg
ffmpeg version 4.1.4-1~deb10u1 Copyright (c) 2000-2019 the FFmpeg developers
built with gcc 8 (Debian 8.3.0-6)
configuration: --prefix=/usr --extra-version='1~deb10u1' --toolchain=hardened
--libdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu
--arch=i386 --enable-gpl --disable-stripping --enable-avresample
--disable-filter=resample --enable-avisynth --enable-gnutls --enable-ladspa
--enable-libaom --enable-libass --enable-libbluray --enable-libbs2b
--enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libflite
--enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme
--enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa
--enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse
--enable-librsvg --enable-librubberband --enable-libshine --enable-libsnappy
--enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora
--enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx
--enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2
--enable-libxvid --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx
--enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394
--enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r
--enable-libx264
--ignore-tests='hapenc-hap-none,hapenc-hapa-none,hapenc-hapq-none'
--enable-shared
libavutil 56. 22.100 / 56. 22.100
libavcodec 58. 35.100 / 58. 35.100
libavformat 58. 20.100 / 58. 20.100
libavdevice 58. 5.100 / 58. 5.100
libavfilter 7. 40.101 / 7. 40.101
libavresample 4. 0. 0 / 4. 0. 0
libswscale 5. 3.100 / 5. 3.100
libswresample 3. 3.100 / 3. 3.100
libpostproc 55. 3.100 / 55. 3.100
Guessed Channel Layout for Input Stream #0.0 : stereo
Input #0, alsa, from 'hw:0,0':
Duration: N/A, start: 1595450904.939058, bitrate: 1536 kb/s
Stream #0:0: Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s
Input #1, video4linux2,v4l2, from '/dev/video0':
Duration: N/A, start: 556.262393, bitrate: 147456 kb/s
Stream #1:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456
kb/s, 30 fps, 30 tbr, 1000k tbn, 1000k tbc
File 'out.mpg' already exists. Overwrite ? [y/N] y
Stream mapping:
Stream #1:0 -> #0:0 (rawvideo (native) -> mpeg1video (native))
Stream #0:0 -> #0:1 (pcm_s16le (native) -> mp2 (native))
Press [q] to stop, [?] for help
[alsa @ 0x1464ac0] ALSA buffer xrun.
[mpeg @ 0x147a040] VBV buffer size not set, using default size of 230KB
If you want the mpeg file to be compliant to some specification
Like DVD, VCD or others, make sure you set the correct buffer size
Output #0, mpeg, to 'out.mpg':
Metadata:
encoder : Lavf58.20.100
Stream #0:0: Video: mpeg1video, yuv420p(progressive), 640x480, q=2-31, 200
kb/s, 30 fps, 90k tbn, 30 tbc
Metadata:
encoder : Lavc58.35.100 mpeg1video
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: mp2, 48000 Hz, stereo, s16, 384 kb/s
Metadata:
encoder : Lavc58.35.100 mp2
[video4linux2,v4l2 @ 0x1478400] Thread message queue blocking; consider raising
the thread_queue_size option (current value: 8)
[alsa @ 0x1464ac0] Thread message queue blocking; consider raising the
thread_queue_size option (current value: 8)
More than 1000 frames duplicated 0kB time=00:00:35.93 bitrate=
0.0kbits/s dup=37 drop=0 speed=68.3x
thanks,
rodolfo
_______________________________________________
ffmpeg-user mailing list
ffmpeg-user@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-user
To unsubscribe, visit link above, or email
ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
