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Adel Ahmed
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Joined: 21 Sep 2012
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 Posted: Sat Aug 02, 2014 8:33 pm Post subject: screencasting |
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I'm planning to record my gaming/work sessions.
gtk-record mydeskop works fine except for 2 things:
- switching resolution during recording crashes the recorder(not critical, I can start recording after the game starts running)
- output is huge in size(100 MB for 5 minutes of recording) this is critical, I will be recording and archiving many things, I need compact size without compromising quality
- voice and video are out of sync
I'm open to other screencasting software, I'm also willing to convert the videos instead(I'll need help with that though)
if the second option is more viable, what containers and codecs are good for both size and quality(I'm clueless)
thanks |
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swathe
n00b
Joined: 04 Jul 2011
Posts: 73
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| Posted: Sat Aug 02, 2014 9:13 pm Post subject: |
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| Simple Screen recorder seems pretty popular with people on youtube. |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1523
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| Posted: Sat Aug 02, 2014 10:03 pm Post subject: |
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[PageOutput::PageOutput] Error: Could not find any suitable video codec in libavcodec!
I can't install libavcodec because it conflicts with ffmpeg, and ffmpeg is essential for some scripts on my laptop |
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creaker
l33t
Joined: 14 Jul 2012
Posts: 651
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| Posted: Sun Aug 03, 2014 12:40 am Post subject: |
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| blakdeath wrote: |
I can't install libavcodec because it conflicts with ffmpeg, and ffmpeg is essential for some scripts on my laptop |
Since you have ffmpeg installed, why would not use it for screencasting? ffmpeg records screen just fine.
And doesn't conflict himself  |
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Chiitoo
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Joined: 28 Feb 2010
Posts: 2571
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| Posted: Sun Aug 03, 2014 3:37 pm Post subject: ><)))°€ |
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To expand upon the above a little bit, check for example the topic: screencasting software recommendation?
There's even an example included! ^^
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Kindest of regardses. |
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Adel Ahmed
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Joined: 21 Sep 2012
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| Posted: Wed Aug 06, 2014 5:18 pm Post subject: |
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I tried running ffmpeg screencasting:
ffmpeg -f x11grab -s cif -r 25 -i :0.0 /tmp/out.mpg
and got:
Encoder (codec none) not found for output stream #0:0 |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1523
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| Posted: Wed Aug 06, 2014 5:27 pm Post subject: |
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I trid runnig the script mentioned in the topic but I get:
[NULL @ 0x14eae10] Unable to find a suitable output format for 'AUDIO_CODEC'
AUDIO_CODEC: Invalid argument
here are my use flags:
media-video/ffmpeg-1.2.6 USE="X alsa mmx mmxext theora threads truetype vaapi vpx x264 -3dnow -3dnowext -aac -aacplus (-altivec) -amr -avx -bindist -bluray -bzip2 -cdio (-celt) -cpudetection -debug -doc -encode -examples -faac -fdk -flite -fontconfig -frei0r -gnutls -gsm -hardcoded-tables -iconv -iec61883 -ieee1394 -jack -jpeg2k -libass -libcaca -libsoxr -libv4l -modplug -mp3 (-neon) -network -openal -openssl -opus -oss -pic -pulseaudio -rtmp -schroedinger -sdl -speex -ssse3 -static-libs {-test} -twolame -v4l -vdpau (-vis) -vorbis -xvid -zlib" FFTOOLS="-aviocat -cws2fws -ffescape -ffeval -fourcc2pixfmt -graph2dot -ismindex -pktdumper -qt-faststart -trasher" 0 kB |
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Ant P.
Watchman
Joined: 18 Apr 2009
Posts: 6920
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| Posted: Thu Aug 07, 2014 9:30 pm Post subject: |
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| Can you show us the script you're running and how you're trying to run it |
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creaker
l33t
Joined: 14 Jul 2012
Posts: 651
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| Posted: Thu Aug 07, 2014 11:15 pm Post subject: |
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Possibly you have specified codec that missed on your system.
The very first example I've found on google records my screen:
| Code: | | ffmpeg -f x11grab -r 25 -s 1024x768 -i :0.0 -vcodec huffyuv screencast.avi |
You can check for availible codecs with
As for me, I have ffmpeg built with these flags:
| Code: | media-video/ffmpeg-1.2.6-r1 was built with the following:
USE="X aac alsa bzip2 encode hardcoded-tables iconv mmx mp3 network sdl truetype vorbis x264 xvid zlib -3dnow -3dnowext -aacplus (-altivec) -amr -avx -bindist -bluray -cdio (-celt) -cpudetection -debug -doc -examples -faac -fdk -flite -fontconfig -frei0r -gnutls -gsm -iec61883 -ieee1394 -jack -jpeg2k -libass -libcaca -libsoxr -libv4l -mmxext -modplug (-neon) -openal -openssl -opus -oss -pic -pulseaudio -rtmp -schroedinger -speex -ssse3 -static-libs -test -theora -threads -twolame -v4l -vaapi -vdpau (-vis) -vpx" ABI_X86="64 -32 -x32" FFTOOLS="aviocat cws2fws ffescape ffeval fourcc2pixfmt graph2dot ismindex pktdumper qt-faststart trasher" |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1523
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| Posted: Sat Aug 09, 2014 4:50 am Post subject: |
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| for some reason, I have no encoders on my system, I found out by running ffmpeg -codecs, I have x264 compiled with encode support sp this is a bit weird. I'll start trying to resolve this problem |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1523
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| Posted: Thu Aug 14, 2014 4:15 pm Post subject: |
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I got nothing so far
any help? |
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Chiitoo
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Joined: 28 Feb 2010
Posts: 2571
Location: Here and Away Again
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| Posted: Thu Aug 21, 2014 12:36 pm Post subject: |
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| blakdeath wrote: | here are my use flags:
media-video/ffmpeg-1.2.6 USE="X alsa mmx mmxext theora threads truetype vaapi vpx x264 -3dnow -3dnowext -aac -aacplus (-altivec) -amr -avx -bindist -bluray -bzip2 -cdio (-celt) -cpudetection -debug -doc -encode -examples -faac -fdk -flite -fontconfig -frei0r -gnutls -gsm -hardcoded-tables -iconv -iec61883 -ieee1394 -jack -jpeg2k -libass -libcaca -libsoxr -libv4l -modplug -mp3 (-neon) -network -openal -openssl -opus -oss -pic -pulseaudio -rtmp -schroedinger -sdl -speex -ssse3 -static-libs {-test} -twolame -v4l -vdpau (-vis) -vorbis -xvid -zlib" FFTOOLS="-aviocat -cws2fws -ffescape -ffeval -fourcc2pixfmt -graph2dot -ismindex -pktdumper -qt-faststart -trasher" 0 kB |
You might want to try enabling some more flags (encode for example might be important!).
Here are my (current) flags for it (note that the version I'm using is 'unstable', and even hard-masked right now):
| Code: | media-video/ffmpeg-2.3.1 was built with the following:
USE="3dnow 3dnowext X aac alsa bzip2 encode faac hardcoded-tables iconv jpeg2k mmx mmxext mp3 network openal opengl rtmp sdl sse sse2 sse3 threads truetype v4l vdpau vorbis x264 xvid zlib -aacplus (-altivec) -amr -amrenc (-armv5te) (-armv6) (-armv6t2) (-armvfp) -avx -avx2 -bindist -bluray -bs2b -cdio -celt -cpudetection -debug -doc -examples -fdk -flite -fma3 -fma4 -fontconfig -frei0r -fribidi -gme -gnutls -gsm -iec61883 -ieee1394 -jack -ladspa -libass -libcaca -libsoxr -libv4l (-mips32r2) (-mipsdspr1) (-mipsdspr2) (-mipsfpu) -modplug (-neon) -openssl -opus -oss -pic -pulseaudio -quvi -samba -schroedinger -speex -sse4 -sse4_2 -ssh -ssse3 -static-libs -test -theora -twolame -vaapi -vpx -wavpack -webp -x265 -xop -zvbi" ABI_X86="32 64 -x32" FFTOOLS="aviocat cws2fws ffescape ffeval ffhash fourcc2pixfmt graph2dot ismindex pktdumper qt-faststart trasher" |
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Kindest of regardses. |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1523
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| Posted: Thu Aug 21, 2014 4:33 pm Post subject: |
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| thanks it's all good now |
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jaeyeom
n00b
Joined: 24 Feb 2020
Posts: 3
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| Posted: Wed Jul 08, 2020 3:08 pm Post subject: Re: ><)))°€ |
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Indeed that helped me a lot. Somehow Google search shows this thread instead of the thread you linked. The script you showed is so easy to use! I just had to delete lossless_ultrafast and emerge xwininfo, and that was it! Thank you so much! |
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Chiitoo
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Posts: 2571
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| Posted: Wed Jul 08, 2020 5:51 pm Post subject: Re: ><)))°€ |
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| jaeyeom wrote: | | Indeed that helped me a lot. Somehow Google search shows this thread instead of the thread you linked. The script you showed is so easy to use! I just had to delete lossless_ultrafast and emerge xwininfo, and that was it! Thank you so much! |
That is a very cool blast from the past. Always a bit weird to read things I've written so long ago, not remembering about it any longer...
While I'm here, I might also mention that there is 'media-video/obs-studio' these days, and even if it might be mainly used by live content streamers, it can be pretty convenient for local recording as well.
Of course one might still prefer plain old FFmpeg, and that's fine too!
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