hvfvhigh, new ffmpeg, etc
alan at soulman1949.com
Wed Aug 24 08:29:30 PDT 2016
On 24/08/16 10:50, RS wrote:
>> From: RS Sent: Tuesday, August 23, 2016 22:39
>> Unless and until HLS is fixed, FlashHD is the only way to get
>> 1280x720 25fps unless you re-encode HVFHD to 25fps.
> When I wrote the suggestion of re-encoding HVFHD to 25fps I was
> assuming that I could use ffmpeg -r 25 to drop alternate frames to
> reduce the frame rate. It seems it is not that easy. h.264
> identifies the difference from the previous frame and encodes it. If I
> delete the previous frame it stops working. I just got a lot of
> Invalid timestamp errors from ffmpeg. It seems I have to uncompress
> the HVFHD, which will result in an enormous file, and then re-encode
> it at 25fps with libx264. Does anyone have any ideas how to do it?
I've no experience of doing this with video files but I know that the
process is not recommended for audio files due to degradation of
quality. Reluctantly I've decided to take the hit on hard drive space by
accepting HFVHD @50 frames!
More information about the get_iplayer