Re: [FFmpeg-user] stream mapping seems to work, but doesn't
On Mon, May 23, 2016 at 09:31:25 -0400, sean darcy wrote: > I've got a bunch of VOB's I want to concatenate. For most of the VOB's > stream 0:0 is video and 0:1 audio, but for one VOB te streams are > switched, so concat doesn't work. The issue was discussed in this thread: https://ffmpeg.org/pipermail/ffmpeg-user/2014-December/024592.html but without a resolution. MPEG program streams, such as VOBs, don't know the concept of "order". It didn't become quite clear on what grounds ffmpeg chooses the order - possibly depending on which packet comes first. Moritz ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] stream mapping seems to work, but doesn't
> On Mon, May 23, 2016 at 09:31:25 -0400, sean darcy wrote: > > I've got a bunch of VOB's I want to concatenate. For most of the VOB's > > stream 0:0 is video and 0:1 audio, but for one VOB te streams are > > switched, so concat doesn't work. You need to use the stream id, see the documentation on stream specifiers. Le quintidi 5 prairial, an CCXXIV, Moritz Barsnick a écrit : > MPEG program streams, such as VOBs, don't know the concept of "order". > It didn't become quite clear on what grounds ffmpeg chooses the order - > possibly depending on which packet comes first. Exactly. Regards, -- Nicolas George signature.asc Description: Digital signature ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] stream mapping seems to work, but doesn't
On 05/23/2016 11:29 AM, Nicolas George wrote: On Mon, May 23, 2016 at 09:31:25 -0400, sean darcy wrote: I've got a bunch of VOB's I want to concatenate. For most of the VOB's stream 0:0 is video and 0:1 audio, but for one VOB te streams are switched, so concat doesn't work. You need to use the stream id, see the documentation on stream specifiers. Le quintidi 5 prairial, an CCXXIV, Moritz Barsnick a écrit : MPEG program streams, such as VOBs, don't know the concept of "order". It didn't become quite clear on what grounds ffmpeg chooses the order - possibly depending on which packet comes first. Exactly. Regards, Tried using stream id's : ffmpeg -i out5A.VOB -map i:0x1e0 -map i:0x80 -c copy out5A-x.VOB ... [mpeg @ 0x23ec120] DTS discontinuity in stream 0: packet 3 with DTS 50761, packet 4 with DTS 53641 Input #0, mpeg, from 'out5A.VOB': Duration: 00:25:50.02, start: 0.50, bitrate: 5516 kb/s Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc [svcd @ 0x23f0a80] VBV buffer size not set, using default size of 130KB If you want the mpeg file to be compliant to some specification Like DVD, VCD or others, make sure you set the correct buffer size Output #0, svcd, to 'out5A-x.VOB': Metadata: encoder : Lavf57.29.101 Stream #0:0: Video: mpeg2video, yuv420p, 720x480 [SAR 8:9 DAR 4:3], q=2-31, max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc Stream #0:1: Audio: ac3, 48000 Hz, stereo, 224 kb/s Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:0 -> #0:1 (copy) Press [q] to stop, [?] for help [svcd @ 0x23f0a80] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame=46435 fps=1900 q=-1.0 Lsize= 1043844kB time=00:25:50.02 bitrate=5516.8kbits/s speed=63.4x ... But no joy: ffprobe -i out5A-x.VOB .. Input #0, mpeg, from 'out5A-x.VOB': Duration: 00:25:50.02, start: 0.50, bitrate: 5516 kb/s Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Thanks for any help. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] stream mapping seems to work, but doesn't
On 05/24/2016 11:53 AM, sean darcy wrote: On 05/23/2016 11:29 AM, Nicolas George wrote: On Mon, May 23, 2016 at 09:31:25 -0400, sean darcy wrote: I've got a bunch of VOB's I want to concatenate. For most of the VOB's stream 0:0 is video and 0:1 audio, but for one VOB te streams are switched, so concat doesn't work. You need to use the stream id, see the documentation on stream specifiers. Le quintidi 5 prairial, an CCXXIV, Moritz Barsnick a écrit : MPEG program streams, such as VOBs, don't know the concept of "order". It didn't become quite clear on what grounds ffmpeg chooses the order - possibly depending on which packet comes first. Exactly. Regards, Tried using stream id's : ffmpeg -i out5A.VOB -map i:0x1e0 -map i:0x80 -c copy out5A-x.VOB ... [mpeg @ 0x23ec120] DTS discontinuity in stream 0: packet 3 with DTS 50761, packet 4 with DTS 53641 Input #0, mpeg, from 'out5A.VOB': Duration: 00:25:50.02, start: 0.50, bitrate: 5516 kb/s Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc [svcd @ 0x23f0a80] VBV buffer size not set, using default size of 130KB If you want the mpeg file to be compliant to some specification Like DVD, VCD or others, make sure you set the correct buffer size Output #0, svcd, to 'out5A-x.VOB': Metadata: encoder : Lavf57.29.101 Stream #0:0: Video: mpeg2video, yuv420p, 720x480 [SAR 8:9 DAR 4:3], q=2-31, max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 29.97 tbc Stream #0:1: Audio: ac3, 48000 Hz, stereo, 224 kb/s Stream mapping: Stream #0:1 -> #0:0 (copy) Stream #0:0 -> #0:1 (copy) Press [q] to stop, [?] for help [svcd @ 0x23f0a80] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly frame=46435 fps=1900 q=-1.0 Lsize= 1043844kB time=00:25:50.02 bitrate=5516.8kbits/s speed=63.4x ... But no joy: ffprobe -i out5A-x.VOB .. Input #0, mpeg, from 'out5A-x.VOB': Duration: 00:25:50.02, start: 0.50, bitrate: 5516 kb/s Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, smpte170m), 720x480 [SAR 8:9 DAR 4:3], max. 8500 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc Thanks for any help. Or am I going at this all wrong? I have a set of VOB's that have random steam orders. I want an mp4. fmpeg -safe 0 -f concat -i mylist.txt \ -c:v:0 libx264 -c:a:0 aac out.mp4 where mylist.txt has the VOB's. The output of this is correct for the VOB's with a stream order that matches the first VOB in the list. But any for VOB with the steam order switched there's no video. BTW, the video returns for any VOB whose stream order matches the first. Instead of trying to fix stream order, is there another easier way? sean ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] stream mapping seems to work, but doesn't
2016-05-24 18:17 GMT+02:00 sean darcy : > > Instead of trying to fix stream order, is there another easier way? It might not be the best option, but it should work: you could remux all your VOBs into correctly-arranged mp4 (or any other container that know better than VOB), then concatenate them. All this using -map 0:v and -map 0:a to avoid potential ordering issue for intermediate VOBs. This option needs some space to work, but it should be quite fast and scriptable. ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
Re: [FFmpeg-user] stream mapping seems to work, but doesn't
Le sextidi 6 prairial, an CCXXIV, sean darcy a écrit : > >But no joy: > > > >ffprobe -i out5A-x.VOB > >.. > >Input #0, mpeg, from 'out5A-x.VOB': > > Duration: 00:25:50.02, start: 0.50, bitrate: 5516 kb/s > >Stream #0:0[0x80]: Audio: ac3, 48000 Hz, stereo, fltp, 224 kb/s > >Stream #0:1[0x1e0]: Video: mpeg2video (Main), yuv420p(tv, > >smpte170m), 720x480 [SAR 8:9 DAR 4:3], max. 8500 kb/s, 29.97 fps, 29.97 > >tbr, 90k tbn, 59.94 tbc There is no order of streams in VOB containers. Not the ones you read, and not the ones you create. > Or am I going at this all wrong? I have a set of VOB's that have random > steam orders. I want an mp4. > > fmpeg -safe 0 -f concat -i mylist.txt \ > -c:v:0 libx264 -c:a:0 aac out.mp4 > > where mylist.txt has the VOB's. IIRC, you forgot to tell us you were using the concat demuxer. There is a stream order in the concat demuxer, it is the order of the streams in all the files, and it must be the same. Obviously, it does not work for VOB files, but there is a countermeasure: https://www.ffmpeg.org/ffmpeg-formats.html#concat Search "This is especially useful for MPEG-PS (VOB) files, where the order of the streams is not reliable.". Regards, -- Nicolas George ___ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
