Hi, Reino, this is off-list. set _JOB_=c:\work\MISS PETTIGREW LIVES FOR A DAY [2007] set _DELAY2CH_=%_JOB_%DELAY2CH.ac3 set _DELAY6CH_=%_JOB_%DELAY6CH.ac3 set _SOURCEa0_=%_JOB_%a0.ac3 set _SOURCEa1_=%_JOB_%a1.ac3 set _DELAYEDa0_=%_JOB_%DELAYEDa0.ac3 set _DELAYEDa1_=%_JOB_%DELAYEDa1.ac3 echo ffconcat version 1.0>"%_JOB_%CONCATa0.txt" echo file '%_DELAY2CH_%'>>"%_JOB_%CONCATa0.txt" echo file '%_SOURCEa0_%'>>"%_JOB_%CONCATa0.txt" start ffmpeg -y -safe 0 -i "%_JOB_%CONCATa0.txt" "%_DELAYEDa0_%" echo ffconcat version 1.0>"%_JOB_%CONCATa1.txt" echo file '%_DELAY6CH_%'>>"%_JOB_%CONCATa1.txt" echo file '%_SOURCEa1_%'>>"%_JOB_%CONCATa1.txt" start ffmpeg -y -safe 0 -i "%_JOB_%CONCATa1.txt" "%_DELAYEDa1_%" On 27/07/2025 07.00, Reino Wijnsma via ffmpeg-user wrote:
Hello Mark,
I would recommend quoting your variables when spaces are involved. The following works for me:
SET "JOB=D:\work\MISS PETTIGREW LIVES FOR A DAY [2007]"
I think you mean this: SET JOB="D:\work\MISS PETTIGREW LIVES FOR A DAY [2007]" The quotes are not needed, and their presence creates problems later. The quotes are only needed at the end, in the FFmpeg command.
But why so many unneccesary variables?...
The variable names document what the step does (e.g. _DELAY2CH_) or what the file is (e.g. _SOURCEa0_, _DELAYEDa0_). The goal is to keep the FFmpeg command line from wrapping, in email for example. ffmpeg -y -safe 0 -i "%_JOB_%CONCATa0.txt" "%_DELAYEDa0_%" And the reason I put tokens in all-caps and with leading and trailing underscores is so that they stand out (e.g. %_JOB_%).
... Also the creation of the ffconcat-file can be done more efficiently...
Efficiency often matters, but not in this case. It's readability that matters here. Thanks for your thoughts. I appreciate your passion to help!--Mark.