Terrible framerates (muxing overhead?) for x11grab + oss
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp. chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196798006.303876, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1196798006.325148, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 276 fps= 29 q=2.0 Lsize= 5283kB time=8.7 bitrate=4983.9kbits/s video:417kB audio:34kB global headers:0kB muxing overhead 1072.708355% Compare this to without capturing from /dev/dsp: chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -qscale 2 -vcodec mpeg4 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196797081.323056, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 370 fps= 32 q=2.0 Lsize= 20575kB time=14.8 bitrate=11388.6kbits/s video:18733kB audio:0kB global headers:0kB muxing overhead 9.830883% I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level? Thanks in advance, Chris
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp.
chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196798006.303876, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1196798006.325148, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 276 fps= 29 q=2.0 Lsize= 5283kB time=8.7 bitrate=4983.9kbits/s video:417kB audio:34kB global headers:0kB muxing overhead 1072.708355%
Compare this to without capturing from /dev/dsp: chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -qscale 2 -vcodec mpeg4 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196797081.323056, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 370 fps= 32 q=2.0 Lsize= 20575kB time=14.8 bitrate=11388.6kbits/s video:18733kB audio:0kB global headers:0kB muxing overhead 9.830883%
I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level?
Thanks in advance, Chris
Help, anybody? Pretty please? It's for a good cause: I'm trying to make another screencast series for ShowMeDo.com. I already made two successfully a year ago: http://showmedo.com/videos/series?id=94 http://showmedo.com/videos/series?id=95 This latest version of FFmpeg seems to act differently, however. Again, thanks in advance. Chris
On Dec 5, 2007 5:16 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp. [snip] I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level?
Thanks in advance, Chris
Help, anybody? Pretty please? It's for a good cause: I'm trying to make another screencast series for ShowMeDo.com. I already made two successfully a year ago: http://showmedo.com/videos/series?id=94 http://showmedo.com/videos/series?id=95
This latest version of FFmpeg seems to act differently, however.
Help, please? Could anybody at least see if they encounter anything similar? My platform is Ubuntu Linux 7.10 i386, running on a Pentium Core Duo 1.83 GHz notebook PC with 2GB RAM. Many thanks, Chris
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp.
chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196798006.303876, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1196798006.325148, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 276 fps= 29 q=2.0 Lsize= 5283kB time=8.7 bitrate=4983.9kbits/s video:417kB audio:34kB global headers:0kB muxing overhead 1072.708355%
Compare this to without capturing from /dev/dsp: chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -qscale 2 -vcodec mpeg4 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196797081.323056, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 370 fps= 32 q=2.0 Lsize= 20575kB time=14.8 bitrate=11388.6kbits/s video:18733kB audio:0kB global headers:0kB muxing overhead 9.830883%
I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level?
Thanks in advance, Chris
I haven't had a reply to this for over a month. Can anyone at least confirm that they do or do not have the same issue for their platform? I would love to hear from those who have a similar configuration. My platform is Ubuntu Linux 7.10 i386, running on a Pentium Core Duo 1.83 GHz notebook PC with 2GB RAM. To this day I still have this issue: chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 /tmp/out.mpgFFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777404.313500, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 116 fps= 33 q=2.0 Lsize= 162kB time=4.6 bitrate= 288.5kbits/s video:136kB audio:0kB global headers:0kB muxing overhead 18.944266% chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 -f oss -i /dev/dsp /tmp/out.mpg FFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777436.046285, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200777436.056171, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: mp2, 44100 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 184 fps= 31 q=4.1 Lsize= 318kB time=6.2 bitrate= 419.0kbits/s video:7kB audio:49kB global headers:0kB muxing overhead 476.656218% Thanks, Chris
On date Saturday 2008-01-19 16:20:04 -0500, Chris Lasher encoded:
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp.
chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196798006.303876, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1196798006.325148, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 276 fps= 29 q=2.0 Lsize= 5283kB time=8.7 bitrate=4983.9kbits/s video:417kB audio:34kB global headers:0kB muxing overhead 1072.708355%
Compare this to without capturing from /dev/dsp: chris at feathers:~/downloads/ffmpeg$ ffmpeg -f x11grab -s svga -i :0.0 -qscale 2 -vcodec mpeg4 /tmp/out.mp4 FFmpeg version SVN-r11163, Copyright (c) 2000-2007 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.5.0 libavcodec version: 51.48.0 libavformat version: 52.1.0 built on Dec 4 2007 14:34:36, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8425814]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 800 height: 600 [x11grab @ 0x8425814]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1196797081.323056, bitrate: 384000 kb/s Stream #0.0: Video: rawvideo, rgb32, 800x600 [PAR 0:1 DAR 0:1], 384000 kb/s, 25.00 tb(r) File '/tmp/out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to '/tmp/out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 800x600 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 370 fps= 32 q=2.0 Lsize= 20575kB time=14.8 bitrate=11388.6kbits/s video:18733kB audio:0kB global headers:0kB muxing overhead 9.830883%
I notice a huge difference in the muxing overhead, which has probably caused this choppiness. How can I reduce the muxing overhead to a sane level?
Thanks in advance, Chris
I haven't had a reply to this for over a month. Can anyone at least confirm that they do or do not have the same issue for their platform? I would love to hear from those who have a similar configuration. My platform is Ubuntu Linux 7.10 i386, running on a Pentium Core Duo 1.83 GHz notebook PC with 2GB RAM.
To this day I still have this issue: chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 /tmp/out.mpgFFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777404.313500, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 116 fps= 33 q=2.0 Lsize= 162kB time=4.6 bitrate= 288.5kbits/s video:136kB audio:0kB global headers:0kB muxing overhead 18.944266%
chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 -f oss -i /dev/dsp /tmp/out.mpg FFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777436.046285, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200777436.056171, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: mp2, 44100 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 184 fps= 31 q=4.1 Lsize= 318kB time=6.2 bitrate= 419.0kbits/s video:7kB audio:49kB global headers:0kB muxing overhead 476.656218%
Hi, same results here, pentium 4 on Debian Lenny, SVN of the day. My results are: stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7f57af0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7f57af0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903709.660532, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200903709.890648, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 285 fps= 19 q=2.0 Lsize= 3408kB time=8.8 bitrate=3174.6kbits/s video:167kB audio:33kB global headers:0kB muxing overhead 1595.770165% stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -qscale 2 -vcodec mpeg4 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7fadaf0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7fadaf0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903959.995722, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) File 'out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 340 fps= 29 q=2.0 Lsize= 4517kB time=13.6 bitrate=2720.9kbits/s video:285kB audio:0kB global headers:0kB muxing overhead 1482.716463% No idea what's the problem though. Regards. -- ffmpeg-user random tip #4 ffmpeg -i FILE prints information about the container format and the streams in a file.
On Jan 21, 2008 3:28 AM, Stefano Sabatini <stefano.sabatini-lala at poste.it> wrote:
On date Saturday 2008-01-19 16:20:04 -0500, Chris Lasher encoded:
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp.
I haven't had a reply to this for over a month. Can anyone at least confirm that they do or do not have the same issue for their platform? I would love to hear from those who have a similar configuration. My platform is Ubuntu Linux 7.10 i386, running on a Pentium Core Duo 1.83 GHz notebook PC with 2GB RAM.
To this day I still have this issue: chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 /tmp/out.mpgFFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777404.313500, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 116 fps= 33 q=2.0 Lsize= 162kB time=4.6 bitrate= 288.5kbits/s video:136kB audio:0kB global headers:0kB muxing overhead 18.944266%
chris at feathers:~$ ffmpeg -f x11grab -s 100x100 -r 25 -i :0.0 -f oss -i /dev/dsp /tmp/out.mpg FFmpeg version SVN-r11557, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --enable-gpl --enable-x11grab --enable-pp --enable-pthreads --enable-libfaac --enable-libfaad --enable-liba52 --enable-libx264 --enable-libdc1394 --enable-libgsm --enable-libmp3lame --enable-libxvid --enable-libtheora --enable-libvorbis libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.4.0 libavdevice version: 52.0.0 built on Jan 18 2008 21:24:55, gcc: 4.1.3 20070929 (prerelease) (Ubuntu 4.1.2-16ubuntu2) [x11grab @ 0x8428ed4]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 100 height: 100 [x11grab @ 0x8428ed4]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200777436.046285, bitrate: 8000 kb/s Stream #0.0: Video: rawvideo, rgb32, 100x100 [PAR 0:1 DAR 0:1], 8000 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200777436.056171, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s File '/tmp/out.mpg' already exists. Overwrite ? [y/N] y Output #0, mpeg, to '/tmp/out.mpg': Stream #0.0: Video: mpeg1video, yuv420p, 100x100 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: mp2, 44100 Hz, mono, 64 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 184 fps= 31 q=4.1 Lsize= 318kB time=6.2 bitrate= 419.0kbits/s video:7kB audio:49kB global headers:0kB muxing overhead 476.656218%
Hi, same results here, pentium 4 on Debian Lenny, SVN of the day.
My results are: stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7f57af0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7f57af0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903709.660532, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200903709.890648, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 285 fps= 19 q=2.0 Lsize= 3408kB time=8.8 bitrate=3174.6kbits/s video:167kB audio:33kB global headers:0kB muxing overhead 1595.770165%
stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -qscale 2 -vcodec mpeg4 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7fadaf0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7fadaf0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903959.995722, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) File 'out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 340 fps= 29 q=2.0 Lsize= 4517kB time=13.6 bitrate=2720.9kbits/s video:285kB audio:0kB global headers:0kB muxing overhead 1482.716463%
No idea what's the problem though.
Regards.
Good to know it's not a problem only on my system. Anyone else have this? Anyone know how to solve this? The change was introduced within the last two months. Chris
On Sun, Jan 27, 2008 at 11:28 AM, Chris Lasher <chris.lasher at gmail.com> wrote:
On Jan 21, 2008 3:28 AM, Stefano Sabatini
<stefano.sabatini-lala at poste.it> wrote:
On date Saturday 2008-01-19 16:20:04 -0500, Chris Lasher encoded:
On Dec 4, 2007 2:56 PM, Chris Lasher <chris.lasher at gmail.com> wrote:
I'm getting really lousy framerates for my screen capture using x11grab in conjunction with capture from /dev/dsp.
I haven't had a reply to this for over a month. Can anyone at least confirm that they do or do not have the same issue for their platform? I would love to hear from those who have a similar configuration. My platform is Ubuntu Linux 7.10 i386, running on a Pentium Core Duo 1.83 GHz notebook PC with 2GB RAM.
To this day I still have this issue:
Hi, same results here, pentium 4 on Debian Lenny, SVN of the day.
My results are: stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -f oss -i /dev/dsp -qscale 2 -vcodec mpeg4 -ab 32000 -ar 22050 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7f57af0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7f57af0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903709.660532, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) Input #1, oss, from '/dev/dsp': Duration: N/A, start: 1200903709.890648, bitrate: N/A Stream #1.0: Audio: pcm_s16le, 44100 Hz, mono, 705 kb/s Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream #0.1: Audio: libfaac, 22050 Hz, mono, 32 kb/s Stream mapping: Stream #0.0 -> #0.0 Stream #1.0 -> #0.1 Press [q] to stop encoding frame= 285 fps= 19 q=2.0 Lsize= 3408kB time=8.8 bitrate=3174.6kbits/s video:167kB audio:33kB global headers:0kB muxing overhead 1595.770165%
stefano at geppetto ~> ffmpeg -f x11grab -s 640x480 -r 25 -i :0.0 -qscale 2 -vcodec mpeg4 out.mp4 FFmpeg version SVN-r11584, Copyright (c) 2000-2008 Fabrice Bellard, et al. configuration: --prefix=/home/stefano --enable-gpl --enable-pp --enable-swscaler --enable-libtheora --enable-libvorbis --disable-static --enable-shared --enable-libfaad --enable-libfaac --enable-x11grab --enable-libmp3lame --disable-optimizations --disable-mmx libavutil version: 49.6.0 libavcodec version: 51.49.0 libavformat version: 52.5.0 libavdevice version: 52.0.0 built on Jan 21 2008 09:14:15, gcc: 4.2.3 20071014 (prerelease) (Debian 4.2.2-3) [x11grab @ 0xb7fadaf0]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 640 height: 480 [x11grab @ 0xb7fadaf0]shared memory extension found Input #0, x11grab, from ':0.0': Duration: N/A, start: 1200903959.995722, bitrate: 245760 kb/s Stream #0.0: Video: rawvideo, rgb32, 640x480 [PAR 0:1 DAR 0:1], 245760 kb/s, 25.00 tb(r) File 'out.mp4' already exists. Overwrite ? [y/N] y Output #0, mp4, to 'out.mp4': Stream #0.0: Video: mpeg4, yuv420p, 640x480 [PAR 0:1 DAR 0:1], q=2-31, 200 kb/s, 25.00 tb(c) Stream mapping: Stream #0.0 -> #0.0 Press [q] to stop encoding frame= 340 fps= 29 q=2.0 Lsize= 4517kB time=13.6 bitrate=2720.9kbits/s video:285kB audio:0kB global headers:0kB muxing overhead 1482.716463%
No idea what's the problem though.
Regards.
Good to know it's not a problem only on my system. Anyone else have this? Anyone know how to solve this? The change was introduced within the last two months.
Chris
Could anyone please confirm or deny this issue for a different platform? I have filed a bug report here: https://roundup.mplayerhq.hu/roundup/ffmpeg/issue348 Thanks, Chris
participants (2)
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chris.lasher＠gmail.com -
stefano.sabatini-lala＠poste.it