[FFmpeg-user] overlay with video offset not starting audio with same offset
Chad Horton
chorton at hotsalsainteractive.com
Sun Aug 30 21:48:21 CEST 2015
Hi,
I need it to offset the audio of the overlay to match where I offset the video of the overlay. The audio of the underlay video (output_2015-08-29_12-53-21.mp4) should not be moved.
-----Original Message-----
From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of Paul B Mahol
Sent: Sunday, August 30, 2015 12:46 AM
To: FFmpeg user questions <ffmpeg-user at ffmpeg.org>
Subject: Re: [FFmpeg-user] overlay with video offset not starting audio with same offset
On 8/30/15, Chad Horton <chorton at hotsalsainteractive.com> wrote:
> Thanks.
>
> Playing around with atrim and while the video processes, not only does
> the overlay video freeze in places (it^1s choppy), the audio is also off still.
> But I don^1t know if it^1s just an artifact of the video not
> processing correctly.
>
> I did notice that if I execute with offset 00:00:00.000 and without
> using the atrim filter, the video processes, the overlay plays cleanly.
>
> The difference in output when I execute with the itsoffset and atrim
> is in the version with itsoffset > 0 and matching atrim, there^1s what
> appears to be warnings - for example, "[Parsed_overlay_1 @
> 0x7fef18c21000] [framesync @ 0x7fef1900b028] Buffer queue overflow, dropping."
Shouldn't you atrim [0:a] and not [1:a] ?
>
> Ffmpeg command and full output provided below.
>
>
> ffmpeg -y -i output_2015-08-29_12-53-21.mp4 -itsoffset 2 -i
> animations/chimp-01.mov -filter_complex
> "[1:v]scale=1280:720[ovrl];[0v][ovrl]overlay=eof_action=pass[outv];[1:
> a]atr im=2[1a];[0:a][1a]amix[outa]" -map [outv] -map [outa] -c:v mpeg4
> -strict experimental -qscale:v 10 final_video_temp.mp4
>
>
> ffmpeg version 2.6.2-tessus Copyright (c) 2000-2015 the FFmpeg developers
> built with Apple LLVM version 6.0 (clang-600.0.57) (based on LLVM 3.5svn)
> configuration: --cc=/usr/bin/clang
> --prefix=/Users/helmutt/data/ext/ffmpeg/sw --as=yasm
> --extra-version=tessus --disable-shared --enable-static
> --disable-ffplay --enable-gpl --enable-pthreads --enable-postproc
> --enable-libmp3lame --enable-libtheora --enable-libvorbis
> --enable-libx264 --enable-libx265 --enable-libxvid --enable-libspeex
> --enable-bzlib --enable-zlib --enable-libopencore-amrnb
> --enable-libopencore-amrwb --enable-libxavs --enable-libsoxr
> --enable-libwavpack --enable-version3 --enable-libvo-aacenc
> --enable-libvo-amrwbenc --enable-libvpx --enable-libgsm
> --enable-libopus --enable-libmodplug --enable-fontconfig
> --enable-libfreetype --enable-libass --enable-libbluray
> --enable-filters --disable-indev=qtkit --disable-indev=x11grab_xcb --enable-runtime-cpudetect
> libavutil 54. 20.100 / 54. 20.100
> libavcodec 56. 26.100 / 56. 26.100
> libavformat 56. 25.101 / 56. 25.101
> libavdevice 56. 4.100 / 56. 4.100
> libavfilter 5. 11.102 / 5. 11.102
> libswscale 3. 1.101 / 3. 1.101
> libswresample 1. 1.100 / 1. 1.100
> libpostproc 53. 3.100 / 53. 3.100
> Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'output_2015-08-29_12-53-21.mp4':
> Metadata:
> major_brand : mp42
> minor_version : 0
> compatible_brands: isommp42
> creation_time : 2015-08-29 19:53:36
> Duration: 00:00:13.19, start: 0.000000, bitrate: 10149 kb/s
> Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
> 1280x720, 10004 kb/s, SAR 1:1 DAR 16:9, 29.98 fps, 30.02 tbr, 90k tbn,
> 180k tbc (default)
> Metadata:
> creation_time : 2015-08-29 19:53:36
> handler_name : VideoHandle
> encoder : MOTO
> Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
> stereo, fltp, 128 kb/s (default)
> Metadata:
> creation_time : 2015-08-29 19:53:36
> handler_name : SoundHandle
> Guessed Channel Layout for Input Stream #1.1 : mono Input #1,
> mov,mp4,m4a,3gp,3g2,mj2, from 'animations/chimp-01.mov':
> Metadata:
> major_brand : qt
> minor_version : 537199360
> compatible_brands: qt
> creation_time : 2013-02-16 01:09:15
> Duration: 00:00:07.67, start: 0.000000, bitrate: 18997 kb/s
> Stream #1:0(eng): Video: png (png / 0x20676E70), rgba, 640x360
> [SAR
> 2834:2834 DAR 16:9], 18270 kb/s, 30 fps, 30 tbr, 30 tbn, 30 tbc (default)
> Metadata:
> creation_time : 2013-02-16 01:09:15
> handler_name : Apple Alias Data Handler
> encoder : PNG
> timecode : 00:00:00:00
> Stream #1:1(eng): Audio: pcm_s16le (sowt / 0x74776F73), 44100 Hz,
> 1 channels, s16, 705 kb/s (default)
> Metadata:
> creation_time : 2013-02-16 01:09:15
> handler_name : Apple Alias Data Handler
> timecode : 00:00:00:00
> Stream #1:2(eng): Data: none (tmcd / 0x64636D74), 0 kb/s (default)
> Metadata:
> creation_time : 2013-02-16 01:09:27
> handler_name : Apple Alias Data Handler
> timecode : 00:00:00:00
> Output #0, mp4, to 'final_video_temp.mp4':
> Metadata:
> major_brand : mp42
> minor_version : 0
> compatible_brands: isommp42
> encoder : Lavf56.25.101
> Stream #0:0: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 1280x720
> [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 30.02 fps, 45k tbn, 30.02 tbc
> (default)
> Metadata:
> encoder : Lavc56.26.100 mpeg4
> Stream #0:1: Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040),
> 48000 Hz, stereo, s16, 128 kb/s (default)
> Metadata:
> encoder : Lavc56.26.100 libvo_aacenc
> Stream mapping:
> Stream #0:0 (h264) -> overlay:main
> Stream #0:1 (aac) -> amix:input0
> Stream #1:0 (png) -> scale
> Stream #1:1 (pcm_s16le) -> atrim
> overlay -> Stream #0:0 (mpeg4)
> amix -> Stream #0:1 (libvo_aacenc)
> Press [q] to stop, [?] for help
> [Parsed_overlay_1 @ 0x7fef18c21000] [framesync @ 0x7fef1900b028]
> Buffer queue overflow, dropping.
> Last message repeated 14 times
> [Parsed_overlay_1 @ 0x7fef18c21000] [framesync @ 0x7fef1900b028]
> Buffer queue overflow, dropping.
> Last message repeated 2 times
> [Parsed_overlay_1 @ 0x7fef18c21000] [framesync @ 0x7fef1900b028]
> Buffer queue overflow, dropping.
> Last message repeated 14 times
> [Parsed_overlay_1 @ 0x7fef18c21000] [framesync @ 0x7fef1900b028]
> Buffer queue overflow, dropping.
> Last message repeated 2 times
> frame= 396 fps=130 q=10.0 Lsize= 4326kB time=00:00:13.19
> bitrate=2686.7kbits/s
> video:4108kB audio:206kB subtitle:0kB other streams:0kB global
> headers:0kB muxing overhead: 0.290611%
>
>
>
>
>
>
> On 8/29/15, 7:58 AM, "ffmpeg-user on behalf of Paul B Mahol"
> <ffmpeg-user-bounces at ffmpeg.org on behalf of onemda at gmail.com> wrote:
>
>>On 8/29/15, Chad Horton <chorton at hotsalsainteractive.com> wrote:
>>> I didn't provide my attempts because I was randomly throwing adelay
>>>and then
>>> atrim into my command and nothing worked. My hope is that someone
>>>could
>>> show me how to do it properly with my current command and adding in
>>>the atrim and/or adelay filter.
>>
>>This works for me:
>>
>>ffmpeg -i ~/matrixbench_mpeg2.mpg -itsoffset 00:00:20.000 -i
>>~/GoneNutty.avi -lavfi
>>"scale=640:512,vstack;[0:a]atrim=20[a],[1:a][a]amix" output.avi
>>_______________________________________________
>>ffmpeg-user mailing list
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>
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