[FFmpeg-user] Extracting stills frames from a DVB-T MPEG transport stream with subtitles
TPCffmpeg at mklab.ph.rhul.ac.uk
Sun Jun 21 03:33:01 EEST 2020
On Sat, 20 Jun 2020, Hans Carlson wrote:
> On Sat, 20 Jun 2020, Tom Crane wrote:
>> I am attempting to extract still frames from a video stream in a
>> multi-channel DVB-T MPEG transport stream, for example every 2 seconds,
>> with selected accompanying subtitles but can't get it to work.
> If you want to combine the video and the sub into a single image, then try
> the overlay filter, eg:
> ffmpeg -i dvb.ts -filter_complex "[0:26][0:30]overlay" -r 0.5
Many thanks for that which does exactly what I wanted.
> Add other options as necessary to get desired quality.
Adding '-qscale:v 1' provided the required quality.
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