#5855 closed enhancement (wontfix)
Feature request: apply same adelay values to all channels
Reported by: | Mulvya | Owned by: | |
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Priority: | wish | Component: | avfilter |
Version: | git-master | Keywords: | adelay |
Cc: | Blocked By: | ||
Blocking: | Reproduced by developer: | no | |
Analyzed by developer: | no |
Description
At present (N-81692-gef42c1d), the adelay filter requires individual specification of delay for each audio channel. I request a syntax that lets one set a uniform delay for all channels, however many those are. This will be very helpful during batch processing of files with varying number of channels, so that a single static command can be used.
Thanks.
Attachments (1)
Change History (9)
comment:1 by , 8 years ago
Type: | defect → enhancement |
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comment:2 by , 8 years ago
comment:3 by , 8 years ago
Sample: http://samples.ffmpeg.org/mov/weirdedl.mp4
Command:
ffmpeg -t 10 -i weirdedl.mp4 -c:v copy -af adelay=1000 adelay-1c-test.mp4
Console output:
ffmpeg version N-81692-gef42c1d Copyright (c) 2000-2016 the FFmpeg developers built with gcc 6.1.0 (Rev1, Built by MSYS2 project) configuration: --enable-avisynth --enable-libmp3lame --enable-libopus --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --disable-w32threads --enable-decklink --enable-fontconfig --enable-frei0r --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libilbc --enable-libmfx --enable-libmodplug --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --enable-libwavpack --enable-libwebp --enable-libxavs --enable-libxvid --enable-libzimg --enable-openssl --enable-libsnappy --enable-gpl --enable-opencl --enable-opengl --enable-libcdio --enable-libfdk-aac --enable-libkvazaar --enable-librubberband --enable-libssh --enable-libtesseract --enable-libzvbi --enable-chromaprint --enable-libebur128 --enable-libopenh264 --enable-libopenmpt --enable-netcdf --enable-version3 --enable-nonfree --enable-filter=frei0r --disable-debug libavutil 55. 29.100 / 55. 29.100 libavcodec 57. 57.100 / 57. 57.100 libavformat 57. 49.100 / 57. 49.100 libavdevice 57. 0.102 / 57. 0.102 libavfilter 6. 62.100 / 6. 62.100 libswscale 4. 1.100 / 4. 1.100 libswresample 2. 1.100 / 2. 1.100 libpostproc 54. 0.100 / 54. 0.100 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'weirdedl.mp4': Metadata: major_brand : isom minor_version : 1 compatible_brands: isom creation_time : 2009-03-11T17:24:45.000000Z Duration: 00:24:58.00, start: 0.083438, bitrate: 44 kb/s Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], 1678 kb/s, 23.97 fps, 23.97 tbr, 12567183.00 tbn, 47.94 tbc (default) Metadata: creation_time : 2009-03-11T15:09:43.000000Z handler_name : Samurai Sentai Shinkenger Act 02 Stream #0:1(jpn): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 278 kb/s (default) Metadata: creation_time : 2009-03-11T17:24:50.000000Z handler_name : Japanese [mp4 @ 00000000001dce20] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. Last message repeated 1 times Output #0, mp4, to 'adelay-1c-test.mp4': Metadata: major_brand : isom minor_version : 1 compatible_brands: isom encoder : Lavf57.49.100 Stream #0:0(und): Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 1678 kb/s, 23.97 fps, 23.97 tbr, 12567183.00 tbn, 12567183.00 tbc (default) Metadata: creation_time : 2009-03-11T15:09:43.000000Z handler_name : Samurai Sentai Shinkenger Act 02 Stream #0:1(jpn): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default) Metadata: creation_time : 2009-03-11T17:24:50.000000Z handler_name : Japanese encoder : Lavc57.57.100 aac Stream mapping: Stream #0:0 -> #0:0 (copy) Stream #0:1 -> #0:1 (aac (native) -> aac (native)) Press [q] to stop, [?] for help frame= 244 fps=0.0 q=-1.0 Lsize= 2287kB time=00:00:13.92 bitrate=1345.3kbits/s speed=45.5x video:2113kB audio:167kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.323739% [aac @ 0000000002b0cd20] Qavg: 3905.534
Result attached above.
comment:4 by , 8 years ago
Resolution: | → wontfix |
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Status: | new → closed |
You can use adelay='5|5|5|5|5|5|5|5|5'.. up to very high number.
Unused entries are ignored.
comment:5 by , 8 years ago
If you really want this, give option name that will trigger same adelay value for all channels.
comment:8 by , 8 years ago
ffmpeg -t 10 -i weirdedl.mp4 -c:v copy -af adelay=all=2000 adelay-1c-test.mp4 for 2000ms delay applied to all channels. Thanks.
Please provide a command line and complete, uncut console output.