#264: x11grab using lossless x264 ffpresets fails on 32-bit
-------------------------+--------------------------
Reporter: llogan | Owner:
Type: defect | Status: new
Priority: normal | Component: undetermined
Version: git-master | Keywords:
Blocked By: | Blocking:
Reproduced: 0 | Analyzed: 0
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Recording x11grab with the below command works on x86_64 Arch Linux and
Ubuntu Lucid, but fails with 32-bit Natty.
Looks like a regression:
b4bcd1e2f1d603419ea9d4fdaab400b1ad35e58c bad
7a88617c43ce534d94591dd78d4958333492b939 good
{{{
$ ffmpeg -v 9 -loglevel 99 -f x11grab -r 30 -s 320x240 -i :0.0 -vcodec
libx264 -vpre lossless_ultrafast -threads 0 -y ~/output.mp4
ffmpeg version git-N-30011-gb4bcd1e, Copyright (c) 2000-2011 the FFmpeg
developers
built on Jun 3 2011 13:51:23 with gcc 4.5.2
configuration: --enable-gpl --enable-libx264 --enable-x11grab --disable-
doc
libavutil 51. 2. 1 / 51. 2. 1
libavcodec 53. 6. 0 / 53. 6. 0
libavformat 53. 1. 0 / 53. 1. 0
libavdevice 53. 0. 0 / 53. 0. 0
libavfilter 2. 5. 0 / 2. 5. 0
libswscale 0. 14. 0 / 0. 14. 0
libpostproc 51. 2. 0 / 51. 2. 0
[x11grab @ 0x9b0bb40] device: :0.0 -> display: :0.0 x: 0 y: 0 width: 320
height: 240
[x11grab @ 0x9b0bb40] shared memory extension found
[x11grab @ 0x9b0bb40] All info found
[x11grab @ 0x9b0bb40] Estimating duration from bitrate, this may be
inaccurate
Input #0, x11grab, from ':0.0':
Duration: N/A, start: 1307138325.849861, bitrate: 73728 kb/s
Stream #0.0, 1, 1/1000000: Video: rawvideo, bgra, 320x240, 1/30, 73728
kb/s, 30 tbr, 1000k tbn, 30 tbc
Incompatible pixel format 'bgra' for codec 'libx264', auto-selecting
format 'yuv420p'
[buffer @ 0x9afc880] w:320 h:240 pixfmt:bgra tb:1/1000000 sar:0/1
[ffsink @ 0x9afd940] auto-inserting filter 'auto-inserted scaler 0'
between the filter 'src' and the filter 'out'
[scale @ 0x9afdc20] w:320 h:240 fmt:bgra -> w:320 h:240 fmt:yuv420p
flags:0xa0000004
[libx264 @ 0x9affba0] --psnr used with psy on: results will be invalid!
[libx264 @ 0x9affba0] --tune psnr should be used if attempting to
benchmark psnr!
[libx264 @ 0x9affba0] interlace + weightp is not implemented
[libx264 @ 0x9affba0] using mv_range_thread = 24
[libx264 @ 0x9affba0] using cpu capabilities: MMX2 SSE2Fast SSSE3
FastShuffle Cache64
[libx264 @ 0x9affba0] constant rate-factor is incompatible with 2pass.
Output #0, mp4, to '/home/lou/output.mp4':
Stream #0.0, 0, 1/90000: Video: libx264, yuv420p, 320x240, 1/30,
q=0-69, pass 1, pass 2, 200 kb/s, 90k tbn, 30 tbc
Stream mapping:
Stream #0.0 -> #0.0
Error while opening encoder for output stream #0.0 - maybe incorrect
parameters such as bit_rate, rate, width or height
}}}
However, re-encoding from a file and not x11grab seems to work as
expected.
--
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/264>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker
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