Framerate drops with some MP4 files
Posted: 25 Jun 2012 19:48
OK, let me start by saying what I'm working with. It's an old computer: Athlon XP on 1.9 GHz, 1.5 GB RAM and MSI FX5600 128 MB graphics card.
Now, even though this is an old computer I never had any issues playing files until I upgraded from 1.x version (can't remember which it was exactly) to the newest one (2.0.1 Twoflower).
Problem seems to be with MPEG-4 files that have 1 reference frame.
Playback starts normally, and if I don't touch anything it goes smooth. But if I want to jump to a certain point in a video, video drops framerate by a lot, making it unbearable to watch.
Here is info on the file in question:
However, if I re-encode it with Handbrake the file becomes fine again:
Here's info on another MP4 file that I have that has no issues while playing:
I have tried with GPU acceleration and messing with video outputs but nothing helps. Framerate is also lover with some .VOB and .MKV files that I have, which were playing fine before upgrade.
I don't know what has happened with this update but it has gone to worse and I love my VLC, so I don't want to give up on it.
Any advice?
Now, even though this is an old computer I never had any issues playing files until I upgraded from 1.x version (can't remember which it was exactly) to the newest one (2.0.1 Twoflower).
Problem seems to be with MPEG-4 files that have 1 reference frame.
Playback starts normally, and if I don't touch anything it goes smooth. But if I want to jump to a certain point in a video, video drops framerate by a lot, making it unbearable to watch.
Here is info on the file in question:
Code: Select all
General
Complete name : C:\test files\TestFile1.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 404 MiB
Duration : 21mn 29s
Overall bit rate mode : Variable
Overall bit rate : 2 630 Kbps
Encoded date : UTC 2010-11-22 20:18:14
Tagged date : UTC 2010-11-22 20:18:14
Writing application : Lavf52.62.0
Comment : FlixEngineLinux_8.0.17.1 (www.on2.com)
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : Baseline@L3.1
Format settings, CABAC : No
Format settings, ReFrames : 1 frame
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 21mn 29s
Bit rate mode : Variable
Bit rate : 2 496 Kbps
Width : 720 pixels
Height : 540 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 30.000 fps
Minimum frame rate : 29.412 fps
Maximum frame rate : 30.303 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.214
Stream size : 384 MiB (95%)
Encoded date : UTC 2010-11-22 20:18:14
Tagged date : UTC 2010-11-22 20:18:14
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 21mn 29s
Bit rate mode : Variable
Bit rate : 128 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 19.7 MiB (5%)
Encoded date : UTC 2010-11-22 20:18:14
Tagged date : UTC 2010-11-22 20:18:14However, if I re-encode it with Handbrake the file becomes fine again:
Code: Select all
General
Complete name : C:\test files\TestFile1-1.mp4
Format : MPEG-4
Format profile : Base Media / Version 2
Codec ID : mp42
File size : 379 MiB
Duration : 21mn 29s
Overall bit rate mode : Variable
Overall bit rate : 2 467 Kbps
Encoded date : UTC 2012-06-25 17:19:26
Tagged date : UTC 2012-06-25 17:40:39
Writing application : HandBrake 0.9.5 2011010300
Video
ID : 1
Format : MPEG-4 Visual
Format profile : Simple@L1
Format settings, BVOP : No
Format settings, QPel : No
Format settings, GMC : No warppoints
Format settings, Matrix : Default (H.263)
Codec ID : 20
Duration : 21mn 29s
Bit rate mode : Variable
Bit rate : 2 335 Kbps
Maximum bit rate : 3 573 Kbps
Width : 718 pixels
Height : 540 pixels
Display aspect ratio : 4:3
Frame rate mode : Variable
Frame rate : 30.000 fps
Minimum frame rate : 29.412 fps
Maximum frame rate : 30.303 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Compression mode : Lossy
Bits/(Pixel*Frame) : 0.201
Stream size : 359 MiB (95%)
Writing library : Lavc52.94.3
Encoded date : UTC 2012-06-25 17:19:26
Tagged date : UTC 2012-06-25 17:40:39
Color primaries : BT.709-2, SMPTE 274M, SMPTE 296M
Transfer characteristics : BT.709-2, SMPTE 170M, SMPTE 274M, SMPTE 293M, SMPTE 296M
Matrix coefficients : BT.470-4 System B, BT.470-4 System G, BT.601-4, SMPTE 170M, SMPTE 293M
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 21mn 29s
Bit rate mode : Variable
Bit rate : 128 Kbps
Maximum bit rate : 159 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 19.7 MiB (5%)
Encoded date : UTC 2012-06-25 17:19:26
Tagged date : UTC 2012-06-25 17:40:39
Code: Select all
General
Complete name : C:\test files\TestFile2.mp4
Format : MPEG-4
Format profile : Base Media
Codec ID : isom
File size : 379 MiB
Duration : 41mn 39s
Overall bit rate mode : Variable
Overall bit rate : 1 272 Kbps
Writing application : Lavf52.32.0
Video
ID : 1
Format : AVC
Format/Info : Advanced Video Codec
Format profile : High@L3.0
Format settings, CABAC : Yes
Format settings, ReFrames : 3 frames
Codec ID : avc1
Codec ID/Info : Advanced Video Coding
Duration : 41mn 39s
Duration_FirstFrame : -100ms
Bit rate : 1 100 Kbps
Width : 768 pixels
Height : 432 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 29.970 fps
Minimum frame rate : 7.493 fps
Maximum frame rate : 29.970 fps
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 8 bits
Scan type : Progressive
Bits/(Pixel*Frame) : 0.111
Stream size : 328 MiB (86%)
Language : English
Tagged date : UTC 2012-01-14 11:00:50
Audio
ID : 2
Format : AAC
Format/Info : Advanced Audio Codec
Format profile : LC
Codec ID : 40
Duration : 41mn 39s
Bit rate mode : Variable
Bit rate : 105 Kbps
Channel(s) : 2 channels
Channel positions : Front: L R
Sampling rate : 48.0 KHz
Compression mode : Lossy
Stream size : 31.2 MiB (8%)
Language : English
Tagged date : UTC 2012-01-14 11:00:50I have tried with GPU acceleration and messing with video outputs but nothing helps. Framerate is also lover with some .VOB and .MKV files that I have, which were playing fine before upgrade.
I don't know what has happened with this update but it has gone to worse and I love my VLC, so I don't want to give up on it.
Any advice?