Search found 132 matches

by pandy
Tue Apr 16, 2019 2:11 pm
Forum: Usage
Topic: Live gpu h265 4k video encoding - needed gpu power
Replies: 1
Views: 98

Re: Live gpu h265 4k video encoding - needed gpu power

You should check official NVidia documentation. Video_Codec_SDK_9.0.20\doc\NVENC_Application_Note.pdf Between Quadro and ordinary NVidia cards there is very substantial difference, allow me to quote NVidia: 3. NVENC LICENSING POLICY There is no change in licensing policy in the current SDK in compar...
by pandy
Tue Mar 26, 2019 2:32 pm
Forum: Usage
Topic: av1 getting worse results than hevc (h265)
Replies: 5
Views: 295

Re: av1 getting worse results than hevc (h265)

Then perhaps AV1 is still far from being mature enough to be used.
by pandy
Mon Mar 25, 2019 3:52 pm
Forum: Usage
Topic: ffmpeg split video H264 stutters on Windows Media Player
Replies: 3
Views: 168

Re: ffmpeg split video H264 stutters on Windows Media Player

you may try to add 'stitchable=1' flag to x264 private properties - i always encode h.264 with closed gop's and flag stitchable @SET x264opts="crf=18:level=4.0:qpmin=16:vbv_maxrate=9984:vbv_bufsize=9984:cabac=1:interlaced=0:no_psnr=1:no_ssim=1:bluray_compat=1:open-gop=0:pic_struct=1:aud=1:nal_hrd=vb...
by pandy
Mon Mar 25, 2019 3:44 pm
Forum: Usage
Topic: Monomix left audio
Replies: 5
Views: 107

Re: Monomix left audio

Thanks, sad that it generates an error: Unable to find a suitable output format for 'copy' :? ffmpeg -i lopp.mxf -y -threads 0 -filter_complex "[0:v]format=yuv420p, yadif=1, split=4[s0][s1][s2][s3]; [s0]scale=384:216[v0]; [s1]scale=512:288[v1]; [s2]scale=768:432[v2]; [s3]scale=1920:1080[v3];[0:a][0...
by pandy
Mon Mar 25, 2019 11:31 am
Forum: Usage
Topic: Monomix left audio
Replies: 5
Views: 107

Re: Monomix left audio

not tested, never made something like this before (-af aac replaced by -c:a aac , IMHO it was error) ffmpeg -i lopp.mxf -y -threads 0 -filter_complex "[0:v]format=yuv420p, yadif=1, split=4[s0][s1][s2][s3]; [s0]scale=384:216[v0]; [s1]scale=512:288[v1]; [s2]scale=768:432[v2]; [s3]scale=1920:1080[v3];[...
by pandy
Mon Mar 25, 2019 11:17 am
Forum: Usage
Topic: ffmpeg split video H264 stutters on Windows Media Player
Replies: 3
Views: 168

Re: ffmpeg split video H264 stutters on Windows Media Player

You should cut video on IDR (assuming H.264) frames, use closed GOP, also adding "-movflags faststart" (mp4 container flag) may improve observed behaviour.
by pandy
Mon Mar 25, 2019 11:11 am
Forum: Usage
Topic: How to run ffmpeg [email protected] screen capture
Replies: 1
Views: 152

Re: How to run ffmpeg [email protected] screen capture

HW/SW limitations?
by pandy
Mon Mar 25, 2019 11:09 am
Forum: Usage
Topic: help - could not set video options
Replies: 1
Views: 86

Re: help - could not set video options

ffmpeg follow reported device capabilities - you can resize your video to desired size later. to capture from HW device i need to to perform such steps: first listing ffmpeg supported devices ffmpeg -list_devices true -f dshow -i dummy then list HW capability using proper name acquired in previous s...