FORUMS: list search recent posts

Trying to screencast, refuses with scene change error?

COW Forums : FFmpeg

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
Lugo Teehalt
Trying to screencast, refuses with scene change error?
on Aug 2, 2011 at 9:15:44 am

[CODE]ffmpeg -f alsa -ac 2 -i pulse -f x11grab -r 30 -s 1024x768 -i :0.0 -acodec pcm_s16le -fpre /usr/local/share/ffmpeg/libx264-lossless_ultrafast.ffpreset -threads 0 output.mkv
ffmpeg version N-31720-g03cbe6c, Copyright (c) 2000-2011 the FFmpeg developers
built on Aug 2 2011 08:46:29 with gcc 4.4.5
configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-libxvid --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab --enable-libvpx
libavutil 51. 11. 1 / 51. 11. 1
libavcodec 53. 9. 0 / 53. 9. 0
libavformat 53. 6. 0 / 53. 6. 0
libavdevice 53. 2. 0 / 53. 2. 0
libavfilter 2. 27. 5 / 2. 27. 5
libswscale 2. 0. 0 / 2. 0. 0
libpostproc 51. 2. 0 / 51. 2. 0
[alsa @ 0x94ab3a0] Estimating duration from bitrate, this may be inaccurate
Input #0, alsa, from 'pulse':
Duration: N/A, start: 1312272653.688062, bitrate: N/A
Stream #0.0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
[x11grab @ 0x94acec0] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1024 height: 768
[x11grab @ 0x94acec0] shared memory extension found
[x11grab @ 0x94acec0] Estimating duration from bitrate, this may be inaccurate
Input #1, x11grab, from ':0.0':
Duration: N/A, start: 1312272653.741166, bitrate: 754974 kb/s
Stream #1.0: Video: rawvideo, bgra, 1024x768, 754974 kb/s, 30 tbr, 1000k tbn, 30 tbc
File 'output.mkv' already exists. Overwrite ? [y/N] y
Incompatible pixel format 'bgra' for codec 'mpeg4', auto-selecting format 'yuv420p'
[buffer @ 0x94a5c80] w:1024 h:768 pixfmt:bgra tb:1/1000000 sar:0/1 sws_param:
[buffersink @ 0x94c16e0] auto-inserting filter 'auto-inserted scaler 0' between the filter 'src' and the filter 'out'
[scale @ 0x94c36e0] w:1024 h:768 fmt:bgra -> w:1024 h:768 fmt:yuv420p flags:0x4
[mpeg4 @ 0x94bf1c0] closed gop with scene change detection are not supported yet, set threshold to 1000000000
Output #0, matroska, to 'output.mkv':
Stream #0.0: Video: mpeg4, yuv420p, 1024x768, q=0-69, 200 kb/s, 90k tbn, 30 tbc
Stream #0.1: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
Stream mapping:
Stream #1.0 -> #0.0
Stream #0.0 -> #0.1
Error while opening encoder for output stream #0.0 - maybe incorrect parameters such as bit_rate, rate, width or height
lugo@debian:~$
[/CODE]

[mpeg4 @ 0x94bf1c0] closed gop with scene change detection are not supported yet, set threshold to 1000000000
is in red.

Tried putting in: -sc_threshold 100000000 -flags +cgop and variations of this but it only changed the thing in the square brackets at the start of the red message. Also fiddled with bitrate etc. parameters.

Great thanks any help.


Return to posts index

<< PREVIOUS   •   VIEW ALL   •   PRINT   •   NEXT >>
© 2017 CreativeCOW.net All Rights Reserved
[TOP]