Joining webm videos under Linux
How can I concatenate several .webm files (e.g. downloaded from youtube) into a single file? I've tried a simple cat followed by "mencoder -forceidx -oac copy -ovc copy ..." - didn't work. I'm using Linux.
linux video-editing webm
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
add a comment |
How can I concatenate several .webm files (e.g. downloaded from youtube) into a single file? I've tried a simple cat followed by "mencoder -forceidx -oac copy -ovc copy ..." - didn't work. I'm using Linux.
linux video-editing webm
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39
add a comment |
How can I concatenate several .webm files (e.g. downloaded from youtube) into a single file? I've tried a simple cat followed by "mencoder -forceidx -oac copy -ovc copy ..." - didn't work. I'm using Linux.
linux video-editing webm
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
How can I concatenate several .webm files (e.g. downloaded from youtube) into a single file? I've tried a simple cat followed by "mencoder -forceidx -oac copy -ovc copy ..." - didn't work. I'm using Linux.
linux video-editing webm
linux video-editing webm
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
edited May 6 '12 at 4:17
studiohack♦
11.3k1880114
11.3k1880114
asked May 6 '12 at 4:06
eugeug
579610
asked May 6 '12 at 4:06
eugeug
579610
asked May 6 '12 at 4:06
eugeug
579610
579610
That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39
add a comment |
That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39
That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39
That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39
add a comment |
3 Answers
3
active
oldest
votes
As Lou mentioned, try mkvmerge like this (from command line):
mkvmerge -o output.webm -w file1.webm + file2.webm
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
add a comment |
Remember that the WebM container format is a strict subset of Matroska, so Matroska tools will work on WebM files. Try mkvmerge (which ships with mkvtoolnix) to re-mux files without re-encoding. The result may or may not be satisfactory for your purposes, but mkvtoolnix is mature and GPLv2-licensed, and well worth a try. There's even a mkvmerge GUI.
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
add a comment |
If you use the mkvmerge GUI, you right-click in the "input file" section, then choose "Add Files" and select the first file from wherever you stored it.
Now, you right-click on the first file in the "input file" section and select "append files".
If, instead of choosing "append files", you chose "add files as additional parts", it won't work. This option is for combining files where the second/third/etc files don't have video headers (like if you used the Unix split command to just cut a file into chunks). If you chose that option with two WebM files, you wouldn't get any errors, but only the first video file will be present in the resulting MKV.
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
As Lou mentioned, try mkvmerge like this (from command line):
mkvmerge -o output.webm -w file1.webm + file2.webm
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
add a comment |
As Lou mentioned, try mkvmerge like this (from command line):
mkvmerge -o output.webm -w file1.webm + file2.webm
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
add a comment |
As Lou mentioned, try mkvmerge like this (from command line):
mkvmerge -o output.webm -w file1.webm + file2.webm
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
As Lou mentioned, try mkvmerge like this (from command line):
mkvmerge -o output.webm -w file1.webm + file2.webm
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
answered May 20 '12 at 19:55
Laurent SLaurent S
23137
23137
add a comment |
add a comment |
Remember that the WebM container format is a strict subset of Matroska, so Matroska tools will work on WebM files. Try mkvmerge (which ships with mkvtoolnix) to re-mux files without re-encoding. The result may or may not be satisfactory for your purposes, but mkvtoolnix is mature and GPLv2-licensed, and well worth a try. There's even a mkvmerge GUI.
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
add a comment |
Remember that the WebM container format is a strict subset of Matroska, so Matroska tools will work on WebM files. Try mkvmerge (which ships with mkvtoolnix) to re-mux files without re-encoding. The result may or may not be satisfactory for your purposes, but mkvtoolnix is mature and GPLv2-licensed, and well worth a try. There's even a mkvmerge GUI.
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
add a comment |
Remember that the WebM container format is a strict subset of Matroska, so Matroska tools will work on WebM files. Try mkvmerge (which ships with mkvtoolnix) to re-mux files without re-encoding. The result may or may not be satisfactory for your purposes, but mkvtoolnix is mature and GPLv2-licensed, and well worth a try. There's even a mkvmerge GUI.
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
Remember that the WebM container format is a strict subset of Matroska, so Matroska tools will work on WebM files. Try mkvmerge (which ships with mkvtoolnix) to re-mux files without re-encoding. The result may or may not be satisfactory for your purposes, but mkvtoolnix is mature and GPLv2-licensed, and well worth a try. There's even a mkvmerge GUI.
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
answered May 7 '12 at 18:42
Lou QuillioLou Quillio
813
813
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
add a comment |
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
Thanks for this info - I think this is definitely on the right track. I've tried the GUI but just feeding the files to it seems to be creating an output with multiple video tracks, not a single video whose length is the sum of all the inputs..
– eug
May 9 '12 at 6:38
2
2
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
An mkvmerge GUI operation analogous to Laurent S's CLI solution above is to Add the first file and to Append the subsequent files in the series. Might not be obvious at first.
– Lou Quillio
Jul 9 '12 at 19:46
add a comment |
If you use the mkvmerge GUI, you right-click in the "input file" section, then choose "Add Files" and select the first file from wherever you stored it.
Now, you right-click on the first file in the "input file" section and select "append files".
If, instead of choosing "append files", you chose "add files as additional parts", it won't work. This option is for combining files where the second/third/etc files don't have video headers (like if you used the Unix split command to just cut a file into chunks). If you chose that option with two WebM files, you wouldn't get any errors, but only the first video file will be present in the resulting MKV.
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
add a comment |
If you use the mkvmerge GUI, you right-click in the "input file" section, then choose "Add Files" and select the first file from wherever you stored it.
Now, you right-click on the first file in the "input file" section and select "append files".
If, instead of choosing "append files", you chose "add files as additional parts", it won't work. This option is for combining files where the second/third/etc files don't have video headers (like if you used the Unix split command to just cut a file into chunks). If you chose that option with two WebM files, you wouldn't get any errors, but only the first video file will be present in the resulting MKV.
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
add a comment |
If you use the mkvmerge GUI, you right-click in the "input file" section, then choose "Add Files" and select the first file from wherever you stored it.
Now, you right-click on the first file in the "input file" section and select "append files".
If, instead of choosing "append files", you chose "add files as additional parts", it won't work. This option is for combining files where the second/third/etc files don't have video headers (like if you used the Unix split command to just cut a file into chunks). If you chose that option with two WebM files, you wouldn't get any errors, but only the first video file will be present in the resulting MKV.
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
If you use the mkvmerge GUI, you right-click in the "input file" section, then choose "Add Files" and select the first file from wherever you stored it.
Now, you right-click on the first file in the "input file" section and select "append files".
If, instead of choosing "append files", you chose "add files as additional parts", it won't work. This option is for combining files where the second/third/etc files don't have video headers (like if you used the Unix split command to just cut a file into chunks). If you chose that option with two WebM files, you wouldn't get any errors, but only the first video file will be present in the resulting MKV.
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
answered Jan 11 at 5:50
Chris SlycordChris Slycord
1
1
add a comment |
add a comment |
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That's gonna be hard – most videos are not meant for concatenating. You can somewhat do this with MPEG-2 and h.264, but no idea for WebM, unless you want to re-encode them.
– slhck
May 6 '12 at 9:39