[FFmpeg-trac] #6292(undetermined:new): overlay filter's shortest=1 doesn't take effect.
FFmpeg
trac at avcodec.org
Thu Apr 6 09:00:27 EEST 2017
#6292: overlay filter's shortest=1 doesn't take effect.
-------------------------------------+-------------------------------------
Reporter: Gyan | Type: defect
Status: new | Priority: normal
Component: | Version: git-
undetermined | master
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Setting **shortest=1** in the **overlay** filter doesn't work. If the main
input is longer, the overlay runs till the end of that video. If the
secondary input is longer, whether it's a video or a looped single image,
encoding proceeds till the EOF of the main input but FFmpeg doesn't exit.
Doing a soft exit works and the output file is valid (tested with MP4
output). However, this is not a practical option when processing videos in
bulk. Can't use output option **-shortest** as workaround if there are no
other streams being muxed (or they are shorter).
Tested with multiple MP4/MOV inputs as main video. Tested with multiple
images and couple of MP4/MOVs as secondary input.
Running git bisect gets
{{{
0ff5567a30be6d7c804e95997ae282d6bacd76c3 is the first bad commit
commit 0ff5567a30be6d7c804e95997ae282d6bacd76c3
Author: Nicolas George <george at nsup.org>
Date: Fri Dec 23 21:39:46 2016 +0100
lavfi/buffersrc: push the frame deeper if requested.
Reduce peak memory consumption with ffmpeg in certain cases.
:040000 040000 1495a0350e1af2b72abb35ce112ee6fd82371a75
bd8d282f75ad23eab19a3fb003574e0090aaed78 M libavfilter
}}}
{{{
C:\avutils\ffmpeg-stock (HEAD detached at 0ff5567)
λ .\ffmpeg -i "t:\Handmade road bike. (promo video).mp4" -loop 1 -i
t:\text.png -filter_complex
"[0][1]overlay=x='(W-w)/2':y='H-h-30':shortest=1" -c:v mpeg4 -c:a aac -b:a
64k -movflags +faststart -f mp4 t:\out.mp4
ffmpeg version 3.2.git Copyright (c) 2000-2016 the FFmpeg developers
built with gcc 6.3.0 (x86_64-posix-sjlj-rev1, Built by MinGW-W64
project)
configuration: --disable-ffplay --disable-ffprobe --disable-ffserver
--disable-hwaccels --disable-devices --disable-encoders --enable-
encoder=mpeg4 --enable-encoder=aac --disable-demuxers --enable-demuxer=mov
--enable-demuxer=image_png_pipe --disable-muxers --enable-muxer=mp4
libavutil 55. 43.100 / 55. 43.100
libavcodec 57. 70.100 / 57. 70.100
libavformat 57. 61.100 / 57. 61.100
libavdevice 57. 2.100 / 57. 2.100
libavfilter 6. 68.100 / 6. 68.100
libswscale 4. 3.101 / 4. 3.101
libswresample 2. 4.100 / 2. 4.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 't:\Handmade road bike. (promo
video).mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf56.40.101
Duration: 00:00:15.74, start: 0.000000, bitrate: 2711 kb/s
Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv,
bt709/unknown/bt709), 1920x1080 [SAR 1:1 DAR 16:9], 2508 kb/s, 25 fps, 25
tbr, 12800 tbn, 50 tbc (default)
Metadata:
handler_name : VideoHandler
Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz,
stereo, fltp, 200 kb/s (default)
Metadata:
handler_name : SoundHandler
Input #1, png_pipe, from 't:\text.png':
Duration: N/A, bitrate: N/A
Stream #1:0: Video: png, rgba(pc), 1920x1080 [SAR 1:1 DAR 16:9], 25
fps, 25 tbr, 25 tbn, 25 tbc
File 't:\out.mp4' already exists. Overwrite ? [y/N] y
Output #0, mp4, to 't:\out.mp4':
Metadata:
major_brand : isom
minor_version : 512
compatible_brands: isomiso2avc1mp41
encoder : Lavf57.61.100
Stream #0:0: Video: mpeg4 ( [0][0][0] / 0x0020), yuv420p, 1920x1080
[SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 25 fps, 12800 tbn, 25 tbc (default)
Metadata:
encoder : Lavc57.70.100 mpeg4
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
Stream #0:1(und): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz,
stereo, fltp, 64 kb/s (default)
Metadata:
handler_name : SoundHandler
encoder : Lavc57.70.100 aac
Stream mapping:
Stream #0:0 (h264) -> overlay:main (graph 0)
Stream #1:0 (png) -> overlay:overlay (graph 0)
overlay (graph 0) -> Stream #0:0 (mpeg4)
Stream #0:1 -> #0:1 (aac (native) -> aac (native))
Press [q] to stop, [?] for help
[mp4 @ 000000000033a5a0] Starting second pass: moving the moov atom to the
beginning of the file
frame= 393 fps= 32 q=31.0 Lsize= 2545kB time=00:00:15.72
bitrate=1326.3kbits/s speed=1.27x
video:2409kB audio:126kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: 0.398423%
[aac @ 000000000332f3c0] Qavg: 317.130
Exiting normally, received signal 2.
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/6292>
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