[FFmpeg-user] ffmpeg don't stop working

[Paul B Mahol]

On Mon, Jul 4, 2022 at 3:47 PM Windstyle - Sistemas via ffmpeg-user <
ffmpeg-user at ffmpeg.org> wrote:

> I need help with behavior that is incomprehensible to me. Ubuntu 20
> system, compiled ffmpeg by Nvidia's GIT for CUDA support. At the start of
> the conversion ffmpeg continues to write output indefinitely even beyond
> the duration of the input.
> Here is the command used:
> /home/giulio/nvidia/ffmpeg/ffmpeg -y -hwaccel cuda -hwaccel_output_format
> cuda -i ~/360_3499.MP4 -i /home/giulio/gear360/l0000_x.tif -i
> /home/giulio/gear360/l0000_y.tif -loop 1 -i
> /home/giulio/gear360/Alpha_Map.tif -i /home/giulio/gear360/r0000_x.tif -i
> /home/giulio/gear360/r0000_y.tif -i /home/giulio/gear360/l0000.tif -i
> /home/giulio/gear360/r0000.tif -gpu 0 -vcodec h264_nvenc -preset p6 -tune
> hq -b:v 20M -bufsize 30M -maxrate 50M -qmin 0 -g 250 -bf 3 -b_ref_mode
> middle -temporal-aq 1 -rc-lookahead 20 -i_qfactor 0.75 -b_qfactor 1.1
> -filter_complex [3]alphaextract[alf];
> [v:0]scale=w=3840:h=-1:flags=lanczos,split=2[l][r];
> [l][1][2]remap[l_remap]; [r][4][5]remap[r_remap];
> [l_remap]setsar=sar=1/1[l_sar]; [r_remap]setsar=sar=1/1[r_sar];
> [l_sar][6]blend=c0_mode=multiply[l_blend];
> [r_sar][7]blend=c0_mode=multiply[r_blend];
> [r_blend][alf]alphamerge[r_rm_a]; [l_blend][r_rm_a]overlay=0:0[merged];
> [merged]eq=contrast=1.4:brightness=0.2:gamma=1.2:saturation=0.9[out] -map
> [out] -map 0:a?
> ~/360_3499-gpu.MP4
> Other information: No error reported with configure/compile/execution,
> same command with embedded ubuntu ffmpeg work fine.
> Download and compiled from official GIT repository = same issue. other
> thinks, compiled version work fast 2X better that the builtin ubuntu version
>


When using  -loop 1 you need to add shortest=1 to relevant filter(s) to
stop processing.

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