Hello,
I am a newbie of FFmpeg. I am trying to upscale a single video segment
(downloaded by a DASH client from a DASH server) to a higher resolution. I
tried the copy and scale filters, but both of them gave the following errors:
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55f1d6eeb8e0] could not find corresponding track
id 1
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55f1d6eeb8e0] could not find corresponding trex
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55f1d6eeb8e0] error reading header
BigBuckBunny_4s1.m4s: Invalid data found when processing input
The following is the meta data of BigBuckBunny_4s1.m4s generated by mp4dump
?[styp] size=8+16
[sidx] size=12+32
reference_ID = 1
timescale = 96
earliest_presentation_time = 0
first_offset = 0
[moof] size=8+464
[mfhd] size=12+4
sequence number = 1
[traf] size=8+440
[tfhd] size=12+4, flags=20000
track ID = 1
[tfdt] size=12+4
base media decode time = 0
[trun] size=12+396, flags=205
sample count = 96
data offset = 480
first sample flags = 0
[mdat] size=8+21112
The following is the meta data of the init.mp4 file
[ftyp] size=8+20
major_brand = iso5
minor_version = 1
compatible_brand = avc1
compatible_brand = dash
compatible_brand = iso5
[free] size=8+50
[moov] size=8+783
...
Could you give me a hint on what is wrong and how to upscale a single DASH
segment?
Thanks in advance!
Best regards,
Qian
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