[Jiaz]

Does it only happen on this link?
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(readInputStreamToString)] -> false:[mp4 @ 00000000030bd5e0] Invalid DTS: 3600 PTS: 1800 in output stream 0:0
(readInputStreamToString)] -> false:[mp4 @ 00000000030bd5e0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 1800 >= NOPTS
(readInputStreamToString)] -> false:av_interleaved_write_frame(): Invalid argument
(readInputStreamToString)] -> false:frame= 3 fps=0.0 q=-1.0 Lsize= 100kB time=00:00:00.02 bitrate=40743.6kbits/s
(readInputStreamToString)] -> false:
(readInputStreamToString)] -> false:video:100kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
(readInputStreamToString)] -> false:Conversion failed!
Something broken/invalid with that stream and causes ffmpeg to fail