[FFmpeg-user] 3d side by side

[Roberto Francescangeli]

From: Carl Eugen Hoyos
Sent: Tuesday, January 29, 2013 6:00 PM
To: ffmpeg-user at ffmpeg.org
Subject: Re: [FFmpeg-user] 3d side by side

Roberto Francescangeli <roberto.francescangeli <at> gmail.com> writes:

> But I can’t find an option to drop frame

setfps

> and also I can’t stretch frames because aspect ratio is fixed.

setsar, setdar

> If I change the AR with setdar I get segmentation fault.

Command line, complete, uncut console output and
backtrace etc, missing.

Carl Eugen


Hi Eugen,

this is how I get the segmentation fault.
I'm trying the setfps option for now.
>From what you write I understand that if I want to stretch I just need to 
change the AR without using scale, right?

Thanks!

uncut command and output:

./ffmpeg -y -i /netserv-root/apps/video-transcode/hkc3d.mp4 -vf "[in] 
scale=iw/2:ih/2, setdar='1.01*iw:ih', pad=2*iw:ih [left]; 
movie=/netserv-root/apps/video-transcode/hkc3d.mp4, scale=iw/2:ih/2 [right]; 
[left][right] overlay=main_w/2:0 [out]" sidebyside.aviffmpeg version 
N-49265-gc4738c3 Copyright (c) 2000-2013 the FFmpeg developers
  built on Jan 24 2013 19:40:49 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
  configuration:
  libavutil      52. 15.103 / 52. 15.103
  libavcodec     54. 90.100 / 54. 90.100
  libavformat    54. 61.104 / 54. 61.104
  libavdevice    54.  3.102 / 54.  3.102
  libavfilter     3. 33.100 /  3. 33.100
  libswscale      2.  2.100 /  2.  2.100
  libswresample   0. 17.102 /  0. 17.102
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x92292c0] stream 0, timescale not set
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x92292c0] max_analyze_duration 5000000 reached 
at 5005005 microseconds
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 
'/netserv-root/apps/video-transcode/hkc3d.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    creation_time   : 1970-01-01 00:00:00
    encoder         : Lavf52.103.0
    title           : Harold Kumar 3 Christmas
  Duration: 00:02:28.79, start: 0.000000, bitrate: 1611 kb/s
    Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 
0x31637661), yuv420p, 960x408 [SAR 1:1 DAR 40:17], 1441 kb/s, 23.98 fps, 
23.98 tbr, 2997 tbn, 47.95 tbc
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, 
fltp, 159 kb/s
    Metadata:
      creation_time   : 1970-01-01 00:00:00
      handler_name    : SoundHandler
    Stream #0:2: Video: mjpeg, yuvj420p, 960x408 [SAR 1:1 DAR 40:17], 90k 
tbr, 90k tbn, 90k tbc
Segmentation fault