Can x264 keep the attachments from the input file?

Nozdrum · 16th December 2013, 04:11

Is it possible to force x264 to keep the attachments from the source files? like the subtitles, so that remuxing the output file is not needed anymore. Any idea?

kypec · 16th December 2013, 12:20

x264 is pure video encoder, it doesn't care about any audio, subtitle or another data tracks but video. You should use MKVToolnix to remux your x264 output to include attachments, audio, subtitles or any other metadata you need.

Selur · 16th December 2013, 16:54

@Nozdrum: You could use ffmpeg with libx264 instead of the x264 binary. ffmpeg support passing through audio and subtitles while only encoding the video.

foxyshadis · 17th December 2013, 01:17

It's always better to remux to optimize the indexing (and therefore seeking). If using mkv, mkvtoolnix is also gives slightly smaller files than ffmpeg's muxer, but it's usually a trivial difference.

If you aren't concerned about seeking performance, the ffmpeg route is reasonable.

Nozdrum · 23rd December 2013, 06:45

I think mkv merge is still the best, probably I'll stick with it.

16th December 2013, 04:11	#1 \| Link
Nozdrum Registered User Join Date: May 2013 Posts: 31	Can x264 keep the attachments from the input file? Is it possible to force x264 to keep the attachments from the source files? like the subtitles, so that remuxing the output file is not needed anymore. Any idea?

16th December 2013, 16:54	#3 \| Link
Selur Registered User Join Date: Oct 2001 Location: Germany Posts: 7,498	@Nozdrum: You could use ffmpeg with libx264 instead of the x264 binary. ffmpeg support passing through audio and subtitles while only encoding the video. __________________ Hybrid here in the forum, homepage

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16th December 2013, 12:20	#2 \| Link
kypec User of free A/V tools Join Date: Jul 2006 Location: SK Posts: 826	x264 is pure video encoder, it doesn't care about any audio, subtitle or another data tracks but video. You should use MKVToolnix to remux your x264 output to include attachments, audio, subtitles or any other metadata you need.

17th December 2013, 01:17	#4 \| Link
foxyshadis Angel of Night Join Date: Nov 2004 Location: Tangled in the silks Posts: 9,562	It's always better to remux to optimize the indexing (and therefore seeking). If using mkv, mkvtoolnix is also gives slightly smaller files than ffmpeg's muxer, but it's usually a trivial difference. If you aren't concerned about seeking performance, the ffmpeg route is reasonable.

23rd December 2013, 06:45	#5 \| Link
Nozdrum Registered User Join Date: May 2013 Posts: 31	I think mkv merge is still the best, probably I'll stick with it.