Re: [FFmpeg-user] Error extracting srt
Thank you SO much Moritz! On Fri, Aug 7, 2020 at 12:20 PM Moritz Barsnick wrote: > On Wed, Aug 05, 2020 at 22:28:15 +0100, Alex Zachopoulos wrote: > > This is the command I use to extract Stream #0:2 (subtitle) from file > ^^ This is an input stream > specifier, for mapping > > 1.mp4, on both computers: > > > > ffmpeg -i 1.mp4 -vn -an -codec:s:0.2 srt 1.srt > ^^ This is an output stream specifier. > > You want to tell ffmpeg to encode the first *output* subtitle stream as > SRT. That's not "0:2", neither "0.2", that's just "0". > > If you have only one output SRT stream - which should be the case, > since your output SRT file can only include one stream - you can omit > the output stream specifier: "-codec:s" > > In your case, you can omit the "-codec:s" totally, because the suffix > of your output file implies it. > > > *[srt @ 0x7fd3b300ce00] Invalid stream specifier: s:0.2.* > > I assume the stream specifier parser used to just ignore the ".2", and > it no longer does, and errors out instead. > > Cheers, > Moritz > ___ > ffmpeg-user mailing list > ffmpeg-user@ffmpeg.org > https://ffmpeg.org/mailman/listinfo/ffmpeg-user > > To unsubscribe, visit link above, or email > ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe". ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] Error extracting srt
On Wed, Aug 05, 2020 at 22:28:15 +0100, Alex Zachopoulos wrote: > This is the command I use to extract Stream #0:2 (subtitle) from file ^^ This is an input stream specifier, for mapping > 1.mp4, on both computers: > > ffmpeg -i 1.mp4 -vn -an -codec:s:0.2 srt 1.srt ^^ This is an output stream specifier. You want to tell ffmpeg to encode the first *output* subtitle stream as SRT. That's not "0:2", neither "0.2", that's just "0". If you have only one output SRT stream - which should be the case, since your output SRT file can only include one stream - you can omit the output stream specifier: "-codec:s" In your case, you can omit the "-codec:s" totally, because the suffix of your output file implies it. > *[srt @ 0x7fd3b300ce00] Invalid stream specifier: s:0.2.* I assume the stream specifier parser used to just ignore the ".2", and it no longer does, and errors out instead. Cheers, Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
[FFmpeg-user] Error extracting srt
Hi all, I want to extract the SRT stream from mp4 files. On my MacPro with High Sierra running ffmpeg 3.3 all is fine. On my MacBook Pro with Catalina running ffmpeg 4.3 I keep getting an error. This is the command I use to extract Stream #0:2 (subtitle) from file 1.mp4, on both computers: ffmpeg -i 1.mp4 -vn -an -codec:s:0.2 srt 1.srt On the MacBook Pro with Catalina and ffmpeg 4.3 is complains, twice: First, somewhere down the middle of the dump it says: *[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7fd3b4009800] stream 0, timescale not set* Then at the end of the dump it says: *[srt @ 0x7fd3b300ce00] Invalid stream specifier: s:0.2.* *Last message repeated 1 times* Like I said, the same command works without a hitch on the MacPro. Anyone can help with any pointers, it'll be much appreciated. Alex ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
