diff mbox series

[FFmpeg-devel] ffmpeg: Add -copystreamid

Message ID 2e3936bb47900fd850e4d12e5289222221cc9860.camel@haerdin.se
State New
Headers show
Series [FFmpeg-devel] ffmpeg: Add -copystreamid | expand

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Commit Message

Tomas Härdin April 11, 2024, 3:41 p.m. UTC
Hi

Patch attached allows preserving PIDs when remuxing MPEG-TS. James
suggested we could generalize this to allow copying from specific
streams, but I think if we want to handle a more general case then it
would be better to handle streamid via metadata.

Passes FATE.

/Tomas

Comments

Tomas Härdin April 11, 2024, 6:28 p.m. UTC | #1
tor 2024-04-11 klockan 17:41 +0200 skrev Tomas Härdin:
> Hi
> 
> Patch attached allows preserving PIDs when remuxing MPEG-TS. James
> suggested we could generalize this to allow copying from specific
> streams, but I think if we want to handle a more general case then it
> would be better to handle streamid via metadata.
> 
> Passes FATE.

Come to think of it, I may need the ability to copy PID from a specific
stream after all. Or more correctly, to replace the audio in an MPEG-TS
stream but keep all the other streams the same, and keeping the PIDs.
I'll see what I can come up with..

/Tomas
Michael Niedermayer April 11, 2024, 10:32 p.m. UTC | #2
On Thu, Apr 11, 2024 at 05:41:48PM +0200, Tomas Härdin wrote:
> Hi
> 
> Patch attached allows preserving PIDs when remuxing MPEG-TS. James
> suggested we could generalize this to allow copying from specific
> streams, but I think if we want to handle a more general case then it
> would be better to handle streamid via metadata.
> 
> Passes FATE.
> 
> /Tomas

>  doc/ffmpeg.texi           |   10 ++++++++++
>  fftools/ffmpeg.h          |    1 +
>  fftools/ffmpeg_mux_init.c |    4 ++++
>  fftools/ffmpeg_opt.c      |    5 +++++
>  4 files changed, 20 insertions(+)
> a926f3ca3c894dfa1dc91d479d32278ab7863bfa  0001-ffmpeg-Add-copystreamid.patch
> From 63b10983876077fd0e2b41c21a3c188b8557c602 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Thu, 11 Apr 2024 16:52:33 +0200
> Subject: [PATCH] ffmpeg: Add -copystreamid
> 
> This causes streamid's to be copied from all input streams to all output streams.
> Individual streams' streamid can still be set explicitly with -streamid.
> ---
>  doc/ffmpeg.texi           | 10 ++++++++++
>  fftools/ffmpeg.h          |  1 +
>  fftools/ffmpeg_mux_init.c |  4 ++++
>  fftools/ffmpeg_opt.c      |  5 +++++
>  4 files changed, 20 insertions(+)

rm doc/ffmpeg.pod doc/ffmpeg-all.1 ; make -j32 doc/ffmpeg-all.1 doc/ffmpeg.pod
rm: cannot remove 'doc/ffmpeg-all.1': No such file or directory
MAN	doc/ffmpeg-all.1
POD	doc/ffmpeg.pod
@example ended by @end table at line 2502
doc/Makefile:88: recipe for target 'doc/ffmpeg.pod' failed
make: *** [doc/ffmpeg.pod] Error 255
make: *** Waiting for unfinished jobs....
pod2man: unable to format doc/ffmpeg-all.pod
doc/Makefile:98: recipe for target 'doc/ffmpeg-all.1' failed
make: *** [doc/ffmpeg-all.1] Error 1


[...]
Tomas Härdin April 12, 2024, 8:54 a.m. UTC | #3
fre 2024-04-12 klockan 00:32 +0200 skrev Michael Niedermayer:
> On Thu, Apr 11, 2024 at 05:41:48PM +0200, Tomas Härdin wrote:
> > Hi
> > 
> > Patch attached allows preserving PIDs when remuxing MPEG-TS. James
> > suggested we could generalize this to allow copying from specific
> > streams, but I think if we want to handle a more general case then
> > it
> > would be better to handle streamid via metadata.
> > 
> > Passes FATE.
> > 
> > /Tomas
> 
> >  doc/ffmpeg.texi           |   10 ++++++++++
> >  fftools/ffmpeg.h          |    1 +
> >  fftools/ffmpeg_mux_init.c |    4 ++++
> >  fftools/ffmpeg_opt.c      |    5 +++++
> >  4 files changed, 20 insertions(+)
> > a926f3ca3c894dfa1dc91d479d32278ab7863bfa  0001-ffmpeg-Add-
> > copystreamid.patch
> > From 63b10983876077fd0e2b41c21a3c188b8557c602 Mon Sep 17 00:00:00
> > 2001
> > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > Date: Thu, 11 Apr 2024 16:52:33 +0200
> > Subject: [PATCH] ffmpeg: Add -copystreamid
> > 
> > This causes streamid's to be copied from all input streams to all
> > output streams.
> > Individual streams' streamid can still be set explicitly with -
> > streamid.
> > ---
> >  doc/ffmpeg.texi           | 10 ++++++++++
> >  fftools/ffmpeg.h          |  1 +
> >  fftools/ffmpeg_mux_init.c |  4 ++++
> >  fftools/ffmpeg_opt.c      |  5 +++++
> >  4 files changed, 20 insertions(+)
> 
> rm doc/ffmpeg.pod doc/ffmpeg-all.1 ; make -j32 doc/ffmpeg-all.1
> doc/ffmpeg.pod
> rm: cannot remove 'doc/ffmpeg-all.1': No such file or directory
> MAN     doc/ffmpeg-all.1
> POD     doc/ffmpeg.pod
> @example ended by @end table at line 2502

Right, should be @end example. Wrote the doc after running FATE. No
matter, I have another solution in the works.

/Tomas
diff mbox series

Patch

From 63b10983876077fd0e2b41c21a3c188b8557c602 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Thu, 11 Apr 2024 16:52:33 +0200
Subject: [PATCH] ffmpeg: Add -copystreamid

This causes streamid's to be copied from all input streams to all output streams.
Individual streams' streamid can still be set explicitly with -streamid.
---
 doc/ffmpeg.texi           | 10 ++++++++++
 fftools/ffmpeg.h          |  1 +
 fftools/ffmpeg_mux_init.c |  4 ++++
 fftools/ffmpeg_opt.c      |  5 +++++
 4 files changed, 20 insertions(+)

diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi
index e996ab945f..ef61b7118d 100644
--- a/doc/ffmpeg.texi
+++ b/doc/ffmpeg.texi
@@ -2096,6 +2096,16 @@  an output mpegts file:
 ffmpeg -i inurl -streamid 0:33 -streamid 1:36 out.ts
 @end example
 
+@item -copystreamid
+Copy streamid's (PIDs) from input streams to output streams for all streams in all output files.
+Can be overridden with -streamid on a per-stream basis.
+
+For example, to remux an input MPEG-TS file, copying all PIDs except the PID of stream 3,
+and setting the PID of stream 3 to 0x123:
+@example
+ffmpeg -i in.ts -map 0 -c copy -copystreamid -streamid 3:0x123 -y out.ts
+@end
+
 @item -bsf[:@var{stream_specifier}] @var{bitstream_filters} (@emph{input/output,per-stream})
 Apply bitstream filters to matching streams. The filters are applied to each
 packet as it is received from the demuxer (when used as an input option) or
diff --git a/fftools/ffmpeg.h b/fftools/ffmpeg.h
index 885a7c0c10..e0f8e4d87d 100644
--- a/fftools/ffmpeg.h
+++ b/fftools/ffmpeg.h
@@ -685,6 +685,7 @@  extern int64_t stats_period;
 extern int stdin_interaction;
 extern AVIOContext *progress_avio;
 extern float max_error_rate;
+extern int copy_streamid;
 
 extern char *filter_nbthreads;
 extern int filter_complex_nbthreads;
diff --git a/fftools/ffmpeg_mux_init.c b/fftools/ffmpeg_mux_init.c
index 6d8bd5bcdf..8268595a18 100644
--- a/fftools/ffmpeg_mux_init.c
+++ b/fftools/ffmpeg_mux_init.c
@@ -1073,6 +1073,10 @@  static int ost_add(Muxer *mux, const OptionsContext *o, enum AVMediaType type,
 
     ost = &ms->ost;
 
+    if (ist && copy_streamid)
+        ost->st->id = ist->st->id;
+
+    // override -copystreamid if -streamid explicitly set
     if (o->streamid) {
         AVDictionaryEntry *e;
         char idx[16], *p;
diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c
index 6526e8e3e8..5b4b29d259 100644
--- a/fftools/ffmpeg_opt.c
+++ b/fftools/ffmpeg_opt.c
@@ -77,6 +77,7 @@  int filter_complex_nbthreads = 0;
 int vstats_version = 2;
 int auto_conversion_filters = 1;
 int64_t stats_period = 500000;
+int copy_streamid     = 0;
 
 
 static int file_overwrite     = 0;
@@ -1902,5 +1903,9 @@  const OptionDef options[] = {
         "set video sync method globally; deprecated, use -fps_mode", "" },
 #endif
 
+    { "copystreamid",           OPT_TYPE_BOOL, OPT_EXPERT,
+        { &copy_streamid },
+        "copy input stream's streamid (MPEG-TS PID) to output stream, for all streams where -streamid is not set" },
+
     { NULL, },
 };
-- 
2.39.2