-
Picture In Picture -Missing key or no key/value separator found
I would like to overlay a video within another video — I have tried the examples from the libavfilter documentation site and other examples.
I’d like to take a 640×480 video as the main/background video and superimpose a 480z360 video in the center of the main video.
ffmpeg -i file1.mp4 -vf “movie=file2.wmv[clip2]; [in][clip2] overlay=80:60 [out]” overlay.mp4
I received the following error: Missing key or no key/value separator found
ffmpeg version N-34549-g13b7781, Copyright (c) 2000-2011 the FFmpeg developers
built on Nov 6 2011 22:02:08 with gcc 4.6.1
configuration: –enable-gpl –enable-version3 –disable-w32threads –enable-runtime-cpudetect –enable-avisynth –enable-bzlib –enable-frei0r –enable-libopencore-amrnb –enable-libopencore-amrwb –enable-libfreetype –enable-libgsm –enable-libmp3lame –enable-libopenjpeg –enable-librtmp –enable-libschroedinger –enable-libspeex –enable-libtheora –enable-libvo-aacenc –enable-libvo-amrwbenc –enable-libvorbis –enable-libvpx –enable-libx264 –enable-libxavs –enable-libxvid –enable-zlib
libavutil 51. 24. 0 / 51. 24. 0
libavcodec 53. 28. 0 / 53. 28. 0
libavformat 53. 19. 0 / 53. 19. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 47. 0 / 2. 47. 0
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from ‘c:\temp\videos\file1.mp4’:
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
creation_time : 1970-01-01 00:00:00
encoder : Lavf53.19.0
Duration: 00:00:40.66, start: 0.000000, bitrate: 232 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 640×480, 97 kb/s, 30 fps, 30 tbr, 30 tbn, 60 tbc
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (mp4a / 0x6134706D), 48000 Hz, stereo, s16, 128 kb/s
Metadata:
creation_time : 1970-01-01 00:00:00
handler_name :
[buffer @ 034B5DA0] w:640 h:480 pixfmt:yuv420p tb:1/1000000 sar:0/1 sws_param:
[movie @ 034CBC00] Missing key or no key/value separator found after key ‘tempvideosfile2.mp4’
[movie @ 034CBBC0] Error parsing options string: ‘tempvideosfile2.mp4’
Error initializing filter ‘movie’ with args ‘c:tempvideosfile2.mp4’
Error opening filters! -
4 Replies
-
It looks like it’s having trouble parsing the path – if you look at the line that reads
Error parsing options string: 'tempvideosfile2.mp4', that looks to me like it’s interpreting the backslashes as posix style escapes. Try giving it an absolute path to the movie, and escaping your backslashes eg movie=c:\temp\videos\file2.wmv -
> ffmpeg -i file1.mp4 -vf “movie=file2.wmv[clip2]; [in][clip2]
> overlay=80:60 [out]” overlay.mp4I made a mistake on my original post — it should read
ffmpeg -i file1.mp4 -vf “movie=file2.mp4[clip2]; [in][clip2] overlay=80:60 [out]” overlay.mp4
Also —- after some more reading —–
Apparently the movie referenced within the filter (i.e. after -vf) must be in the same directory as FFmpeg —- when I move the video files into the same directory as FFmpeg I receive no errors and I’m able to get the Picture-in-Picture effect —– !
Is there a way to reference a video that is not in the FFmpeg path?
-
Steve wrote:
“looks to me like it’s interpreting the backslashes as posix style escapes”I agree — if I run FFmpeg within the directory where the file is located then their is no path (i.e. no backslashes) and I receive no errors and it produces the desired video output.
I tried the escape sequence you proposed but it doesn’t work on my system (.. Windows 7)…. I tried the ole double backslash // but to no avail — same error but the error now includes one of the backslashes (e.g. Error parsing options string: ‘\temp\videos\file2.mp4’). So I think you are on the right track — I just have to find the right escape sequence to work with my system..
thanks
-
It’s definitely doing something tricky with the paths. Maybe try enclosing the path in quotes. I’m sorry that I’m not much chop with windows paths.
Reply to this Discussion! Login or Sign Up