1

I have a video recorded from a gopro which is split into 3 parts as the maximum filesize is reached after about 17 minutes and the gopro automatically splits it into multiple parts. I also have a camstudio recording of my desktop.

I need to concatenate the 3 gopro videos, and also overlay the camstudio recording as a picture in picture sort of view.

I.e it would end up as below where the 9 is the overlay and 1,2,3 are the gopro videos

999999999999999

111111222222333

I have to perform this on a regular basis (and multiple videos), so looking to write a batch file to generate the desired output, in a format playable by windows media player with no downloaded codecs. Reducing the filesize to about 1gb/45min at a maximum would be useful as well.

Can anyone suggest a way to do this in FFmpeg or libav? I can do the concatenation OR the overlay in FFmpeg but cant seem to get both. Maybe I just need to perform the concatenation first to a temporary file then use that as the input for the overlay?

Currently I am using the following 2 commands in ffmpeg to achieve this, but the filesize is huge and the quality isnt great, plus it takes a long time. Currently the output is at about 1gb for 7 minutes but my videos can be up to 45 minutes, so I really need to cut the file size down preferably to around 1-2gb for 45 minutes

ffmpeg -i concat:1.mp4|2.mp4|3.mp4" -an -q:v 9 -preset veryslow -crf 28 -vcodec wmv2 temp.wmv
ffmpeg -i temp.wmv -an -vf"movie=overlay.avi, scale=iw:ih; [in][small] overlay =0:0 [out]" -q:v 9 -preset veryslow -crf 28 -vcodec wmv2 output.wmv

The output from ffmpeg concat is:

>ffmpeg -i "concat:GOPR0133.mp4|GP010133.mp4|GP020133.mp4" -an -q:v 9 -vcodec wm
v2 70-70KMtemp.wmv
ffmpeg version N-61191-gea9399f Copyright (c) 2000-2014 the FFmpeg developers
  built on Mar  8 2014 22:01:33 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable
-zlib
  libavutil      52. 66.101 / 52. 66.101
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 34.100 / 55. 34.100
  libavdevice    55. 11.100 / 55. 11.100
  libavfilter     4.  3.100 /  4.  3.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
[mov,mp4,m4a,3gp,3g2,mj2 @ 027c29c0] Found duplicated MOOV Atom. Skipped it
    Last message repeated 1 times
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'concat:GOPR0133.mp4|GP010133.mp4|GP0201
33.mp4':
  Metadata:
    creation_time   : 2014-04-17 09:47:21
    minor_version   : 0
    major_brand     : avc1
    compatible_brands: avc1isom
  Duration: 00:17:24.30, start: 0.000000, bitrate: 71321 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709
), 1280x720 [SAR 1:1 DAR 16:9], 30002 kb/s, 100 fps, 100 tbr, 180k tbn, 200 tbc
(default)
    Metadata:
      creation_time   : 2014-04-17 09:47:21
      handler_name    :  GoPro AVC
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 12
8 kb/s (default)
    Metadata:
      creation_time   : 2014-04-17 09:47:21
      handler_name    :  GoPro AAC
[swscaler @ 036088a0] deprecated pixel format used, make sure you did set range
correctly
Output #0, asf, to '70-70KMtemp.wmv':
  Metadata:
    compatible_brands: avc1isom
    minor_version   : 0
    major_brand     : avc1
    WM/EncodingSettings: Lavf55.34.100
    Stream #0:0(eng): Video: wmv2 (WMV2 / 0x32564D57), yuv420p, 1280x720 [SAR 1:
1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 100 tbc (default)
    Metadata:
      creation_time   : 2014-04-17 09:47:21
      handler_name    :  GoPro AVC
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> wmv2)
Press [q] to stop, [?] for help
frame=    6 fps=0.0 q=9.0 size=      60kB time=00:00:00.06 bitrate=8195.6kbits/s
frame=   15 fps= 14 q=9.0 size=     132kB time=00:00:00.15 bitrate=7203.6kbits/s
frame=   25 fps= 16 q=9.0 size=     207kB time=00:00:00.25 bitrate=6779.7kbits/s
frame=   33 fps= 16 q=9.0 size=     235kB time=00:00:00.33 bitrate=5834.4kbits/s
frame=   39 fps= 15 q=9.0 size=     294kB time=00:00:00.39 bitrate=6183.9kbits/s
frame=   47 fps= 15 q=9.0 Lsize=     326kB time=00:00:00.47 bitrate=5677.5kbits/
s
etc....

Then the output I get when doing the overlay

>ffmpeg -i GOPR0131.mp4 -an -vf "movie=20140417_0930_55.avi, scale=iw:ih [small]
; [in][small] overlay =0:0 [out]" -q:v 9 -preset veryslow -crf 28 37-38KM.wmv
ffmpeg version N-61191-gea9399f Copyright (c) 2000-2014 the FFmpeg developers
  built on Mar  8 2014 22:01:33 with gcc 4.8.2 (GCC)
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp
ack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable
-zlib
  libavutil      52. 66.101 / 52. 66.101
  libavcodec     55. 52.102 / 55. 52.102
  libavformat    55. 34.100 / 55. 34.100
  libavdevice    55. 11.100 / 55. 11.100
  libavfilter     4.  3.100 /  4.  3.100
  libswscale      2.  5.101 /  2.  5.101
  libswresample   0. 18.100 /  0. 18.100
  libpostproc    52.  3.100 / 52.  3.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'GOPR0131.mp4':
  Metadata:
    major_brand     : avc1
    minor_version   : 0
    compatible_brands: avc1isom
    creation_time   : 2014-04-17 09:29:13
  Duration: 00:11:59.29, start: 0.000000, bitrate: 30160 kb/s
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709
), 1280x720 [SAR 1:1 DAR 16:9], 30005 kb/s, 100 fps, 100 tbr, 180k tbn, 200 tbc
(default)
    Metadata:
      creation_time   : 2014-04-17 09:29:13
      handler_name    :  GoPro AVC
    Stream #0:1(eng): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 12
8 kb/s (default)
    Metadata:
      creation_time   : 2014-04-17 09:29:13
      handler_name    :  GoPro AAC
Codec AVOption preset (Set the encoding preset (cf. x264 --fullhelp)) specified
for output file #0 (37-38KM.wmv) has not been used for any stream. The most like
ly reason is either wrong type (e.g. a video option with no video streams) or th
at it is a private option of some encoder which was not actually used for any st
ream.
Codec AVOption crf (Select the quality for constant quality mode) specified for
output file #0 (37-38KM.wmv) has not been used for any stream. The most likely r
eason is either wrong type (e.g. a video option with no video streams) or that i
t is a private option of some encoder which was not actually used for any stream
.
[swscaler @ 0401a560] deprecated pixel format used, make sure you did set range
correctly
Output #0, asf, to '37-38KM.wmv':
  Metadata:
    major_brand     : avc1
    minor_version   : 0
    compatible_brands: avc1isom
    WM/EncodingSettings: Lavf55.34.100
    Stream #0:0(eng): Video: msmpeg4v3 (msmpeg4) (MP43 / 0x3334504D), yuv420p, 1
280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 1k tbn, 100 tbc (default)
    Metadata:
      creation_time   : 2014-04-17 09:29:13
      handler_name    :  GoPro AVC
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> msmpeg4)
Press [q] to stop, [?] for help
frame=    6 fps=0.0 q=9.0 size=      23kB time=00:00:00.06 bitrate=3075.9kbits/s
frame=   16 fps= 15 q=9.0 size=      57kB time=00:00:00.16 bitrate=2913.4kbits/s
frame=   25 fps= 16 q=9.0 size=      91kB time=00:00:00.25 bitrate=2991.0kbits/s
frame=   32 fps= 15 q=9.0 Lsize=     113kB time=00:00:00.32 bitrate=2898.9kbits/
s
etc...
user3550682
  • 13

1 Answers1

3

You can use the setpts, scale, concat, overlay, and format filters. I'm going to assume all inputs are 1280x720 since the size of the file you want to overlay is currently unknown.

Example

ffmpeg -i gopro0.mp4 -i gopro1.mp4 -i gopro2.mp4 -i over.avi -filter_complex \
"[0:v]setpts=PTS-STARTPTS[v0]; \
 [1:v]setpts=PTS-STARTPTS[v1]; \
 [2:v]setpts=PTS-STARTPTS[v2]; \
 [3:v]setpts=PTS-STARTPTS,scale=iw/4:-2[fg]; \
 [v0][v1][v2]concat=n=3:v=1:a=1[bg][a]; \
 [bg][fg]overlay=W-w-10:10,format=yuv420p[v]"
-map "[v]" -map "[a]" output.mp4

What each filter does

  • setpts makes the timestamps start at 0 which is recommended by concat and overlay.

  • scale will make over.avi a smaller frame size.

  • concat will concatenate each input.

  • overlay will place the scaled over.avi in the top-right corner with a padding of 10 pixels. Refer to the overlay documentation for additional options regarding inputs that have different durations (shortest and eof_action specifically).

  • format will ensure that your output uses a chroma subsampling scheme that is compatible with all players (assuming you are using the encoder libx264 which is default for MP4 if it is supported by your ffmpeg build).

Notes

  • If you want the output to have a smaller frame size, then add another scale:

    [bg][fg]overlay=W-w-10:10,scale=640:-2,format=yuv420p[v]"

  • I was unable to test these examples at this time, so leave a comment if anything does not work as expected and I will look at it on Sunday unless others provide additional help.

  • File types supported by Windows Media Center (Windows 7) is next to worthless since it does not provide specifics, so you may have to experiment, or others that are more familiar with Windows 7 can edit this answer.

llogan
  • 63,280